Changelog for pandoc-3.1.10

Revision history for pandoc

pandoc 3.1.10 (2023-12-12)

Link pandoc-cli version to pandoc version. Henceforth pandoc-cli's version will be synchronized with pandoc's, and pandoc-cli will depend on an exact pandoc version. This will avoid confusion by ensuring that cabal install pandoc-cli-X.Y.Z installs pandoc version X.Y.Z. It will make things more straightforward for upstream packagers (see #9232). This scheme does not follow the Haskell PVP, but that should cause no harm, because this package does not expose a library.
Add alerts markdown extension. This enables GitHub style markdown alerts as a commonmark extension. This extension is now default for gfm. It can't be used with markdown, only with commonmark and variants.
Markdown reader:
- Preserve newlines in math instead of changing to spaces. Otherwise we can get unwanted results if there's a % comment (#9193).
- Make attributes work with reference links (#9171).
HTML reader:
- Improve handling of invalidly nested sublists (#9187, cf. #8150).
MediaWiki reader:
- Allow attribute keys with hyphens (#9178).
ODT reader:
- Support attr text:continue-numbering (#8979, Stephan Meijer).
Typst reader:
- Allow references (e.g. @foo) to become citations if there is no corresponding label in the document.
- Collapse adjacent cite elements.
- Handle supplements in cite.
- Change cite (only one key allowed, a label) (typst 0.9 breaking change).
- Support quote element (typst 0.9).
LaTeX reader:
- Handle otherlanguage environment and language-name environments like \begin{french}...\end{french} (#9202).
- Fix theorem label parsing (#8872, Hikaru Ibayashi).
Docx reader:
- Unwrap content of shaped textboxes (Stephan Meijer, #9214).
- Improve handling of w:sym (#9220). We now look up symbols in symbol fonts using the table defined at Text.Pandoc.Readers.Docx.Symbols.
- Add unexported module Text.Pandoc.Readers.Docx.Symbols. This gives us a table to use to resolve characters included in docx via w:sym element.
Man reader:
- Properly handle .sp macro inside lists and block quotes (#9201).
LaTeX writer:
- Fix bug with big footnotes inside emphasis (#8982, Hikaru Ibayashi).
- Handle identifiers inside heading contents. \phantomsection can't be used in this case, so we need \hypertarget (#9209).
LaTeX template:
- Include bookmark package unconditionally. This package produces better PDF bookmarks than hyperref and does it on the first pass.
Typst writer:
- Use quote for block quotes.
- Support --toc-depth as in other writers (#9242).
- Put inline image dimensions on enclosing box, not image (#9104).
- Better handling of tables with captions (#9194). We now put these in a figure with a caption argument.
- Update typst writer to typst 0.9 citation format (#9188).
Typst template:
- Remove custom definition of blockquote in default template. (We now use built-in quote.)
- Support table of contents.
- Support csl (#9186, Ian Max Andolina). Typst now supports CSL for its native citation engine, so pandoc should use a specified csl style in the template, falling back to bibliographystyle if csl is not specified.
Docx writer:
- Use different style for block quotes in notes (#9243). Using "Footnote Block Text" for the style name, so it can be given a different font size if footnotes are.
- Allow embedded fonts to be used in reference.docx (#6728).
HTML5 writer:
- To conform to validator's expectations, doc-footnote role is used with aside and doc-endnotes with section.
- aside is used only for notes at ends of sections or blocks; if all the notes come at the end of the document, section is used so we can have the doc-endnotes role.
JATS writer:
- Handle case where there is material after refs div (#9166). Previously in such cases the references were not being moved to back matter.
Ms writer:
- Don't do normal escapes in filename arguments for PSPIC etc.
T.P.RoffChar: escape - as \-. The groff_man (7) man page indicates that - characters will be treated as typographic hyphens and are not appropriate for cases where the output should be copy-pasteable as an ASCII hyphen-minus character. (E.g. in command line options.) However, until a recent update groff man did not actually do this; it treated - and \- the same. With the new update (1.23.0) the two are distinguished (see https://lwn.net/Articles/947941/ for background), so now it is important that pandoc escape -.
Text.Pandoc.Extension: add Ext_alerts constructor [API change].
Text.Pandoc.PDF: We now default to running LaTeX only once in producing a PDF (instead of twice). This is made possible by the shift to the bookmark package, which does not require a second pass for PDF bookmarks. If a table of contents is present, we still have to run three times to get the page numbers, and if beamer is used we still do a minimum of two runs.
Text.Pandoc.Shared:
- renderTags': use minimized tag for rect.
- Allow svg path element to be minimized.
- Export combineAttr [API change].
- Improve isTightList so that it recognizes an item containing only a list which is itself tight as potentially an item in a tight list (#9161).
Text.Pandoc.MIME: Ensure we use .svg not .svgz as extension for image/svg+xml mime type. This fixes issues with embedded SVG images in docx output, among other things (#9195).
Text.Pandoc.Class: openURL improvements for data uris. Only treat data URI as base64 if ';base64' is specified. Otherwise treat as UTF-8 (not 100% reliable but should cover most other cases). Strip off ;base64 (or ;charset=... or whatever) from mime type (#9195).
Text.Pandoc.SelfContained: Improve treatment of embedded SVGs (#9206, #8948).
- Ensure unique ids for elements by prefixing SVG id.
- Ensure SVG id attribute except when use element is used.
- Remove width, height attributes from svg element when use element is used. Instead, add width and height 100% to the use element. This seems to get the sizing right.
Text.Pandoc.Citeproc: Don't link citations if suppress-bibliography specified, for there will be nothing to link to (#9163).
epub.css: add styling for sup and sub (#9160).
Switch from base64 to base64-bytestring (#9233).
Use newest versions of commonmark, commonmark-extensions, commonmark-pandoc, texmath, typst, skylighting, skylighting-core.
Benchmark: use standalone documents for reader tests. Otherwise typst reader benchmark fails. Note: this means that we are now parsing longer documents, so bench results on readers won't be comparable to before.
MANUAL.txt: update defaults file docs for bibliography fields (#9173). Recommend using top-level bibliography csl, etc. instead of a nested metadata field. Reason: ${USERDATA} and ${HOME} are only expanded in these contexts, not in metadata.
Move man pages to pandoc-cli package (#9245).

pandoc 3.1.9 (2023-10-27)

Make reference-section-title work with jats+element_citations (#9021).
Add bits as synonym of jats as input format.
JATS reader:
- Modify JATS reader to handle BITS too (#9138, Julia Diaz). Add provision for title-group, book, book-part-wrapper, book-meta, book-part-meta, book-title, book-title-group, index, toc, legend, title, collection-meta
- Fix handling of alt-text (#9130, Julia Diaz). Previously we were looking for an attribute that doesn't exist in JATS; alt-text is provided by a child element.
CommonMark reader:
- Handle Ext_tex_math_gfm (#9121). Parse GFM-specific math constructions when tex_math_gfm enabled.
DokuWiki reader:
- Allow autolinks to be avoided using e.g. https:%%//%%... (#9153).
- Parse <code> and <file> as block-level code (#9154). Previously we treated them as inline code in some contexts, but that is not how DokuWiki works.
LaTeX reader:
- Better handle spacing commands \hfill, \vfill, \hskip, \vskip, etc. (#9150).
- Fix incorrect abbreviation for astronomical unit (#9125, Michael McClurg).
Markdown reader:
- Fix blindspot with superscript in links (#8981). Previously [^super^](#ref) wasn't parsed as a link, due to code that was meant to prevent footnote markers from being recognized as reference links. This commit tightens up that code to avoid this bad effect. We have also added a new restriction on footnote labels: they cannot contain the characters ^, [, or ]. Though this is technically a breaking change, we suspect that the impact will be minimal, as it's very unlikely people would be using these characters in their note labels.
- Don't apply --default-image-extension to data URIs (#9118).
- More accurate check that a normalCite is not a link, bracketed span, or reference (#9080).
HTML reader:
- Allow th to close td and vice versa (#9090).
- Parse task lists using input elements (#9047, Seth Speaks).
Creole reader:
- Handle empty cells correctly (#9141, Sascha Wilde).
Org writer:
- Escape literal *, |, # at beginning of line with ZWS (#9159).
ICML writer:
- Prevent doubled attributes (#9158).
Powerpoint writer:
- Fix a corruption error caused when the document used both a regular png and a png in a data URI (#9113). (Similarly for any other image format.) The problem was that duplicate entries in [Content Types].xml were being created, one for the mime type image/png, one for image/png;base64.
LaTeX writer:
- Fix rowspans in tables so they use the width of the column (= as the width parameter) (#9140).
- Don't treat table as "simple" if they have col widths. This should help fix a problem wherein some grid tables with colspans were overly wide (#9140).
- Fix uneven indents in line block output (#9088).
JATS writer: fix 3.1.4 regression in handling block-level metadata (#9092).
Ms writer: improvements in image handling (#4475).
- PDFPIC is now used for PDF images in figures.
- Inline images that are postscript or PDF are rendered using PSPIC or PDFPIC. This isn't ideal, because they will still be rendered as if in a separate paragraph, but it's probably better than just printing the image name.
- Units are included in height.
HTML writer:
- If raw format is an HTML side deck format, emit it (James J Balamuta).
Typst writer:
- Add #box around image to make it inline. (#9104) An #image by itself in typst is a block-level element. To force images to be inline (as they are in pandoc), we need to add a box with an explicit width. When a width is not given in image attributes, we compute one from the image itself, when possible.
- Don't allow long heading to wrap (#9132).
- Escape ( (#9137). If unescaped ( occurs in certain contexts, it can be parsed as function application.
Man writer:
- Fix some spacing issues around links (#9120). We need to use \c before a .UR or .MT, to avoid an extra space, and also after. To ensure that a space at the beginning of the following line doesn't get swallowed up, we escape it with \.
- Use UR, MT macros for URLs, emails (#9120).
Text.Pandoc.Extensions:
- Add Ext_tex_math_gfm constructor to Extension (#9121). [API change]. This handles two GitHub-specific syntaxes for math. This is now default for gfm, in addition to tex_math_dollars.
- Remove duplicates for Ext_raw_html and Ext_pipe_tables in some of the lists (Tim Stewart).
Text.Pandoc.Metadata: Add helpful message on some metadata YAML errors (#9155).
Text.Pandoc.Shared:
- splitSentences: don't split after initials. This improves the man and ms writer output, preventing sentence breaks after initials.
- Add addPandocAttributes function [API change]. This is meant to simplify addition of attributes to Pandoc elements: for elements that don't have a slot for attributes, an enclosing Div or Span is added to hold the attributes.
MANUAL.txt:
- Clarify that formatting can't cross line boundaries in line blocks (#9119).
- Fix legacy option for citation (#8737, 3w36zj6)
Update et translations (priiduonu).
Updated no translations (Stephan Daus). Renamed no.yaml (macrolanguage Norwegian) to nb.yaml (Norwegian Bokmål). Created soft symbolic link from no.yaml pointing to nb.yaml.
Lua subsystem: Use the newest LPeg version (lpeg-1.1.*) (#9107, Albert Krewinkel).
Default epub.css: Apply style to h6, format styles, and combine identical styles under shared selectors (samuel-weinhardt).
Update nix flake with dependencies (piq9117).
LaTeX template: fix \CSLBlock vertical space (John Purnell).
Allow tasty 1.5 and Diff 0.5.
Require commonmark-extensions 0.2.4, commonmark 0.2.4.
Require texmath 0.12.8.4. This should improve math in powerpoint, fixing empty boxes around roots in some cases.
Require typst 0.3.2.1

pandoc 3.1.8 (2023-09-08)

JATS reader:
- Ignore <processing-meta> element (#9057, Julia Diaz).
- Fix conversion of date to ISO 8601 format (#8865).
LaTeX template:
- Add code allow \cite to break across lines (#9050).
- Fix regression with CSL display="block" (#7363). This restores the line break before the block.
- Rewrite CSLReferences environment to avoid depending on enumitem, which plays badly with beamer. Instead we use a regular list environment. Thanks to @jpcirrus for the concept (#9053).
- Restore the pre-3.1.7 format of the CSLReferences environment, which again has two parameters. The first determines whether a hanging indent is used (1 = yes, 0 = no), and the second is the entry line spacing (0 = none).
- Add a strut to avoid inconsistencies in spacing (#9058).
- Remove a break at the end of CSLRightInline to avoid inconsistencies in spacing. It shouldn't be necessary because the paragraph should extend to the right margin (#9058).
LaTeX writer:
- Fix regression with figure labels (#9045). In 3.1.7, pandoc added two labels to LaTeX figure environments, one with a phantomsection.
- Fix default citeproc entry-spacing. According to the CSL manual, the default entry spacing is 1. We were treating it as 0 (#9058).
HTML writer:
- Use the ID prefix in the ID for the footnotes section (#9044, Benjamin Esham).
- Fix CSL entry-spacing default (#9058).
Text.Pandoc.Citeproc: always include an entry-spacing attribute in the Div if the bibliography element contains an entry-spacing attribute (previously we omitted it when it was 0) (#9058).
Clean up pandoc's own man pages by regenerating with pandoc 3.1.7.
pandoc-lua-engine: bump lower bound for pandoc (#9046).
Depend on texmath 0.12.8.2, fixing binom in typst writer (#9063).

pandoc 3.1.7 (2023-08-31)

Org reader:
- Don't parse alphabetical lists unless the fancy_lists extension is enabled (#9042).
- Allow escaping commas in macro arguments (Amneesh Singh).
JATS reader:
- Support for <permissions> metadata (#9037, Julia Diaz). metadata objects with multiple fields are created, matching the structure in JATS.
- Correct name of JATS element attrib.
Markdown reader:
- Support images with wikilink syntax, e.g. ![[foo|bar]], when one of the wikilinks extension is enabled (#8853).
- Allow a citation or reference link to be parsed after a ! (#8254).
- Fix dropped ! before nonexistent reference (#9038).
LaTeX writer:
- Fix regression in escaping URLs (#9043).
- Use \cite and \bibitem to link up citations, even with citeproc. (#9031). This will give us better accessibility; when tagging is enabled, the citation can be linked to the bibliography entry. This changes some of the details of the layout and the default template. We now make CSLReferences a special enumitem list that will contain \bibitems. Internal links inside citations to ids beginning in ref- are creating using \cite instead of \hyperref.
- Use \phantomsection and \label instead of \hypertarget (#9022).
- Use \hyperref for LaTeX internal links, \hyperlink for beamer (since \hyperref doesn't seem to work) (#9022).
- Backslash-escape % and # in URLs (#9014).
JATS writer:
- Fix placement of ref-list when no title is specified for the reference section (#9017). (In this case we place it in back with an empty title.)
Man writer:
- Avoid a .PP right after a section heading (#9020). This is at best a no-op (in groff man and mandoc) and at worst (in some formatters) may create extra whitespace.
- We revert the fanciness introduced in #7506, which employs a custom font name V and a macro that makes this act like boldface in a terminal and monospace in other formats. Unfortunately, this code uses a mechanism that is not portable (and does not work in mandoc) (#9020).
- Instead of using V for inline code, we simply use CR. Note that \f[CR] is emitted instead of plain \f[C], because there is no C font in man. (This produces warnings in recent versions of groff, #9020.)
- For code blocks, we now use the .EX and .EE macros, together with .IP for spacing and indentation. This gives more standard code that can be better interpreted e.g. by mandoc (#9020).
Man template: don't emit .hy, regardless of setting of hyphenate variable (#9020).
LaTeX template: special redefinition of \st for CJK (#9019). soul's version raises on error on CJK text.
Use latest skylighting-format-blaze-html (#7248). This works around a longstanding iOS Safari bug that caused long lines to be displayed in a different font size in highlighted code.
Allow skylighting 0.14 (and require it in pandoc core).
Allow text 2.1.

pandoc 3.1.6.2 (2023-08-22)

Org reader: allow example lines to end immediately after the colon (Brian Leung).
Docx reader:
- Omit "Table NN" from caption (#9002).
- Avoid spurious block quotes in list items (#8836).
JATS reader: Fix display of block elements (#8889, Julia Diaz). A number of block elements, like disp-quote, list, and disp-formula, were always treated as inlines if appearing inside paragraphs, even if their usage granted a separate block.
HTML reader: avoid duplicate id on header and div (#8991).
Typst writer:
- Use ~ for nonbreaking space, and escape literal ~ (#9010).
- Put the label in right place for Div, use #block (#8991). Previously we were putting the label at the beginning of the Div's contents, but according to the documentation such a label gets attached to the preceding element. We now use an explicit #block and add the label at the end.
LaTeX writer:
- Improve escaping of URIs in href, url (#8992).
- Improve internal links and targets (#8744). We no longer wrap section headings in a \hypertarget. This is unnecessary (hyperref creates an anchor based on the label) and it interferes with tagging. In addition, we now use \hyperref rather than \hyperlink for internal links. Currently \hypertarget is still being used for link anchors not on headings. Thanks to @u-fischer.
HTML format templates (style.html): Fix typo in clause for svg (Jackson Schuster).
Use lastest texmath, typst-symbols, typst. Targets typst 0.7.

pandoc 3.1.6.1 (2023-08-11)

HTML reader: properly calculate RowHeadColumns (#8984). This fixes a bug in the calculation of the number of header columns in table row. It also changes the algorithm for determining the table body's RowHeadColumns based on the numbers of head columns in each row. Previously we used the max, and #8634 switched to the min, which led to bad results. Now we only set RowHeadColumns to a non-zero value if all rows have the same number of head columns.
OpenDocument writer:
- Implement syntax highlighting for inline and block code (#6710).
- Support highlighted text in ODT/OpenDocument writers for Span with class mark (#8960). The color can be adjusted by modifying the Highlighted style.
Typst writer: escape // so it doesn't get interpreted as a comment (#8966).
ChunkedHTML writer: Fix regression including MathJax script (#8967). The fix for #8620 caused the script to be included when the table of contents but not the body text of a page contains math. But it broke the case where the table of contents doesn't contain math but the page does. This patch fixes the issue.
Text.Pandoc.SelfContained:
- Retain attributes in SVG tag when referring to another SVG's content using <use> (#8969).
- Allow units in width and height for SVG. Units are optional but allowed.
- Don't coerce calculated SVG dimensions to Int.
- fix calculation of SVG width and height. We were computing width and height from viewBox incorrectly (#8969).
- Add clause for SVG to default CSS for HTML (#8969).
- Ensure that width and height attributes don't get specified twice is both the img tag and the svg include them (#8965).
- Omit unnecessary attributes xmlns, xmlns:xlink, and version on SVG element (#8965).
- Use 20 character rather than 40 character hashes for generated IDs (#8965).
Use pandoc-types 1.23.1. This fixes a regression with toJSONFilter (#8976), which in 1.23.0.1 no longer worked on pure values of type a -> [a].
Use ghc 9.6 for release builds (#8947).
Fix some links in FAQs (Diogo Almiro).

pandoc 3.1.6 (2023-07-20)

Fix CVE-2023-38745, a variant of the vulnerability in CVE-2023-35936. Guilhem Moulin noticed that the fix to CVE-2023-35936 was incomplete. An attacker could get around it by double-encoding the malicious extension to create or override arbitrary files.
--embed-resources: Use inline SVG instead of data uris for SVG images in HTML5 (#8948). Note that SelfContained does not have access to the writer name, so we check for HTML5 by determining whether the document starts with <DOCTYPE! html>. This means that inline SVG won't be used when generating document fragments.
Fix regression on short boolean arguments (#8956). In 3.1.5 boolean arguments were allowed an optional argument (true|false). This created a regression for uses of fused short arguments, e.g. -somyfile.html, which was equivalent to -s -omyfile.html, but now raised an error because pandoc attempted to parse o as a boolean true or false. This change allows the fused short arguments to be used again. Note that -strue will be interpreted as -s with an argument true, not as -s -t -rue. It is best to use long option names with the optional boolean values, to avoid confusion.
Make --epub-title-page's argument optional. It takes a boolean argument, and now that all of our boolean flags take such an argument, we can make this one optional for consistency.
Improve errors for illegal output formats. Previously if you did pandoc -s -t bbb, it would give you an error about the missing bbb template instead of saying that bbb is not a supported output format.
Improve errors for incorrect command-line option values (#8879). Always give the name of the relevant argument.
Fix typo on error message for incorrect --preserve-tabs argument. Thanks @fsoedjede
Docx reader: use SVG version of image if present (#7244). Previously the backup PNG was exported even if an SVG was present, but the SVG should be preferred.
Typst reader: fix regression in recognition of display math (#8949). The last release caused all math to be parsed as inline math.
JATS writer: don't use <code> for inline code (#8889). It is intended for block-level code.
HTML writer: don't make line blocks sensitive to --wrap (#8952).
RST writer: fix figure handling (#8930, #8871). This fixes a number of regressions from pandoc 2.x. Properly handle caption, alt attribute in figures. No longer treat a paragraph with a single image in it as a figure (we have a dedicated Figure element now).
Docx writer: Copy "mirror margins" property from reference.docx (#8946).
Text.Pandoc.UTF8: Deprecate decodeArg which is now a no-op. This was needed for old base versions which we no longer support.
Use released skylighting, typst.
Allow latest commonmark-extensions. This allows entities in wikilinks.
Switch back to using ghc 9.2 for linux and Windows binary releases (#8947, #8955). With ghc 9.4+, we were getting AVX instructions in the amd64 binary, which aren't supported on older hardware. For maximum compatibility we switch back to ghc 9.2, which doesn't cause the problem. (As documented, ghc should not be emitting these instructions, so we aren't clear on the diagnosis, but the cure has been tested.)
Change Windows release build to use cabal instead of stack.

pandoc 3.1.5 (2023-07-07)

Allow all boolean flags to take an optional true or false value (#8788, Sam S. Almahri). The default is true if no value is specified, so this is fully backwards-compatible.
Support --id-prefix for markdown output (#8878)
Markdown reader:
- Add strictness annotations to fix a memory leak (#8762).
Typst reader:
- Use typst-hs 0.3.0.0, which is more robust, fixes many bugs, and targets typst 0.6.
- Package loading is now supported, as long as the package has been cached or is local.
- Rewrite Typst reader in a way that makes it easier to extend.
- Filter out CR in raw.
- Handle block content for link element.
- Handle block-level content in text element.
- Handle style, align, place in inline contexts too.
- Improve info message for skipped elements.
Add typst reader tests (#8942).
MediaWiki reader:
- Revise treatment of "link trail." Previously we only included ASCII letters. That is correct for English but not for, e.g., Spanish (see comment in #8525). A safer approach is to include all letters except those in the CJK unified ideograph ranges.
AsciiDoc writer:
- Make modern AsciiDoc the target for asciidoc (#8936). The AsciiDoc community now regards the dialect parsed by asciidoctor as the official AsciiDoc syntax, so it should be the target of our asciidoc format. The asciidoc output format now behaves like asciidoctor used to. asciidoctor is a deprecated synonym. For the old asciidoc behavior (targeting the Python script), use asciidoc_legacy. The templates have been consolidated. Instead of separate default.asciidoctor and default.asciidoc templates, there is just default.asciidoc.
- Text.Pandoc.Writers.AsciiDoc API changes:
  - writeAsciiDoc now behaves like writeAsciiDoctor used to.
  - writeAsciiDoctor is now a deprecated synonym for writeAsciiDoc.
  - New exported function writeAsciiDocLegacy behaves like writeAsciDoc used to.
- Update line-through for asciidoc writer to custom inline style (#8933, Kevin Broch).
Typst writer:
- Support unlisted class in headings (#8941).
- Consolidate bibliography files into one #bibliography command (#8937).
- Improve handling of autolinks (#8931).
Docx writer:
- Make relative widths work in tables. This didn't work before because we were missing an attribute that tells Word to used fixed widths rather than computing optimal ones.
DokuWiki writer: fix lists with Div elements (#8920). The DokuWiki writer doesn't render Divs specially, so their presence in a list (e.g. because of custom-styles) need not prevent a regular DokuWiki list from being used. (Falling back to raw HTML in this case is pointless because no new information is given.)
LaTeX writer:
- Fix babel name for fa (should be persian).
- Prevent babel language from being imported twice (#8925).
Text.Pandoc.Class:
- Add toTextM [API change]. This is like Text.Pandoc.UTF8.toText, except:
  - it takes a file path as first argument, in addition to bytestring contents
  - it raises an informative error with source position if the contents are not UTF8-encoded
This replaces utf8ToText whenever we have the filename and are in a PandocMonad instance. This will lead to more informative error messages for UTF8-encoding, indicating the file path and byte offset where the error occurs (#8884).
Remove invalid term "Subject" from Turkish translations (#8921).
stack.yaml: add pkg-config to nix packages (#8927, pacien).
Allow aeson 2.2.
MANUAL: Add clarification on --section-divs. Closes #8882.

pandoc 3.1.4 (2023-06-24)

Fix a security vulnerability in MediaBag and T.P.Class.IO.writeMedia. This vulnerability, discovered by Entroy C, allows users to write arbitrary files to any location by feeding pandoc a specially crafted URL in an image element. The vulnerability is serious for anyone using pandoc to process untrusted input. The vulnerability does not affect pandoc when run with the --sandbox flag. [CVE-2023-35936]
Allow epub-title-page to be used in defaults files (#8908).
Issue Extracting info message (in --verbose mode) when using --extract-media or extracting media temporarily in PDF production.
HTML reader: Update TableBody RowHeadColumns caculation (#8634, Ruqi). This change sets RowHeadColumns to the minimum value of each row, which gives better results in cases where rows have different numbers of leading th tags.
Dokuwiki reader: retain image query parameters as attributes (#8887, echo0).
Textile reader: Add support for link references (#8706, Stephen Altamirano). Textile supports what it calls "link alias", which are analogous to Markdown's reference-style links.
LaTeX reader: support alt text on images (#8743, Albert Krewinkel).
Commonmark reader: Make implicit_figures work again. Support for this (introduced in #6350) disappeared when we made an architectural change.
JATS reader:
- Add footer and multiple body parsing to table reader (#8765, Noah Malmed).
- Parse references title from ref-list (#8365).
JATS writer:
- Make --number-sections work.
- Include title in ref-list (#8364). Previously the reference title ended up in a separate section at the back of the body instead of in the ref-list in the back matter.
Mediawiki writer: allow highlighting to work for F# language (Adelar da Silva Queiróz).
LaTeX writer: Fix escaping of & in \href and \url (#8903).
Docx writer:
- Fix localization of "Abstract" title (#8702).
- Allow abstract-title to be specified in docx metadata (#8794).
ChunkedHTML writer: Make math work in top-level page (#8915).
Text.Pandoc.Logging: add new log message type ScriptingWarning [API change] (Albert Krewinkel).
Lua: report warnings from Lua scripts (Albert Krewinkel). Lua's warning system is plugged into pandoc's reporting architecture. Warnings that are raised with the Lua warn function are now reported together with other messages.
Use crypton-connection instead of connection (#8896, Felix Yan). Follows the change introduced in tls 1.7.0.
Bump versions for skylighting-core, skylighting.
Include lua/module/sample.svg in cabal extra-source-files (Felix Yan).
Add Nynorsk (New Norwegian) translations (Per Christian Gaustad).
Add tests for fillMediaBag/extractMedia.
INSTALL.md:
- Mention alternatives to LaTeX to generate PDF (Norwid Behrnd).
- Update Linux install links (harabat).
pandoc-extras.md: add to "Academic publishing workflows" (#8696, Vladimir Alexiev).

pandoc 3.1.3 (2023-06-07)

New output format: typst.
New module: Text.Pandoc.Readers.Typst [API change].
DocBook reader:
- Support more emphasis roles (Albert Krewinkel). The role "bf" is taken to indicate "bold face", i.e., "strongly emphasized" text, while "underline" leads to underlined text.
JATS reader:
- Improve title and label parsing in the JATS reader (#8718, Noah Malmed.)
- Add rowspan, colspan and alignment to cells in jats table reader (#8408, Noah Malmed)
Org reader (Albert Krewinkel):
- Require abstract environment to use lowercase.
- Treat #+NAME as synonym for #+LABEL (#8578).
ODT reader:
- Allow lists in table cells (#8892).
- Allow frames inside spans (#8886).
RST reader:
- Fix sorting on anonymous keys (#8877). This fixes a link resolution bug bug affecting RST documents with anonymous links.
HTML reader:
- Fix iframe with data URI of an image (#8856). In this case we don't want to try to parse the data at the URL. Instead, create an image inside a div.
RTF reader:
- Fix bug in table parsing (#8767). In certain cases, text before a table was being incorporated into the table itself.
Docx reader:
- Introduce support for Intense Quote (Stephan Meijer).
Markdown reader:
- Disallow escaping of ~ and " in markdown_strict (#8777, Albert Krewinkel). This matches the behavior of the legacy Markdown.pl as well as what is described in the manual.
LaTeX reader: ignore args to column type in \multicolumn (#8789).
HTML writer:
- Use first paragraph in task item as checkbox label (#8729, Albert Krewinkel).
Ms writer:
- Coerce titles to inlines (#8835). Block-level formatting is not allowed inside .TL.
LaTeX writer:
- Fix width for multicolumn simple table (#8831).
Jira writer:
- Use first code block class as highlighting language (#8814, Albert Krewinkel). The writer no longer searches the list of classes for a known programming language but always uses the first class in that list as the language identifier.
OpenDocument writer:
- Handle row header column cells as header cells (#8764, Michael Stahl).
- Fix invalid text:p inside text:p from meta (#8256).
ODT writer:
- Don't add settings.xml (Michael Stahl). This will cause defaults to be used, which is what we want.
- Don't add unnecessary Configurations2 directory (Michael Stahl).
- Don't add thumbnail (Michael Stahl).
- Put manifest.version on directory file-entry (Michael Stahl). See ODF 1.3 part 2, 4.16.14.1.
- Stop validator complaints by producing ODF 1.3 (Michael Stahl).
MediaWiki writer:
- Remove links from inside links in mediawiki writer (#8739, Wout Gevaert).
Typst writer:
- Omit bibliography if citations not enabled (#8763). With this change, the typst writer will omit the #bibliography command when citations is not enabled. (If you want to use pandoc's own --citeproc, you should combine it with -t typst-citations to disable native typst citations.
- Use <..> for labels, create internal links.
- Use #footnote for notes (#8893).
- Fix alignment issue in lists. It's an aesthetic issue only; the first line had an extra space indent after the list marker.
Commonmark writer:
- Use shortcut reference links: commonmark supports these.
EPUB template: add lang attribute to <html> (Gabriel Lewertoski).
Template styles.html: fix task-list styling in reveal.js (#8731, Albert Krewinkel).
LaTeX template: Fix \babelfont (#8728).
Text.Pandoc.Parsing:
- Remove unnecessary 'spaces' in parseFromString.
Text.Pandoc.ImageSize: Drop BOM at start of SVG if present. Otherwise our code can fail to determine image size.
Lua subsystem:
- Fix value of PANDOC_SCRIPT_FILE for custom readers & writers (#8781, Albert Krewinkel). The value did not hold the actual file path for scripts in the custom folder of the datadir.
Fix YAML in translation files for cs and pl (#8787).
Fix pdf output via typst (#8754). One must now use typst compile rather than typst.
MANUAL.txt:
- Added note that the user will need to create the user data dir (#8727).
- Add wikilinks to non-default extensions (Ilona).
- Update link to custom djot writer (Albert Krewinkel).
- Better link to citation syntax.
- Fix typo (sdhoward).
- Note that # fancy list markers don't work with commonmark (#8772, William Lupton).
- Add commonmark fenced_div note (#8773, William Lupton).
- Move highlighting documentation, with minor adjustments (William Lupton).
- Fix inaccurate statement about spaces and tabs in template syntax (Frank Seifferth).
Update documentation for org-mode (Christian Christiansen, #8716).
doc/lua-filter.md:
- Fix typos (#8734, perro tuerto).
- Fix anchor (Toni Dietze).
- Use full field name in example (#8857, Matt Dodson).
- Fix copy-paste error (#8798, thron7).
CONTRIBUTING.md: update info on ghc versions.
INSTALL.md:
- Fix cabal install instructions (Albert Krewinkel).
- Use more relevant link to NetBSD/pkgsrc entry (Charlotte Koch).
- Fix Windows install instructions for winget (#8799).
Tests: Rename test/docx/block_quotes_parse_indent.native for consistency (Stephan Meijer).
Add tls constraint on cabal.project. This is needed to avoid problems caused by the transition to crypton.
Require texmath 0.12.8.

pandoc 3.1.2 (2023-03-26)

Add a Lua REPL (Albert Krewinkel). This can be started with pandoc lua -i. It is also possible to instruct a filter to open the REPL at a certain point, for debugging (see pandoc.cli.repl).
Support typst as a --pdf-engine.
Add typst writer (#8713). New module Text.Pandoc.Writers.Typst, exporting writeTypst [API change].
Org reader:
- Allow zero width space as an escape character (#8716, Christian Christiansen). Allow the character U+200B to be used as an escape character as described in the Org-mode documentation (https://orgmode.org/manual/Escape-Character.html).
DocBook reader:
- Handle "book" for xref references (#8712, Andres Freund) This also adds a test xref to book and part.
- Handle <part> (#8712).
HTML reader:
- Fix behavior with -native_spans-raw_html (#8711). Previously with this configuration, <span>s were not treated as inline elements at all.
HTML writer:
- Avoid duplicate classes (#8705).
- Use img element instead of embed for .svg.gz and .png.gz etc. (#8699).
- HTML writer footnotes changes (#8695): when --reference-location=section or =block, use an aside element for the notes rather than a section. When --reference-location=section, include the aside element inside the section element, rather than outside. (In slide shows, this option causes footnotes on a slide to be displayed at the bottom of the slide.)
EPUB writer:
- Use different structure for epub footnotes (#8676, see #8672, #5583). Many EPUB readers are thrown off by pandoc's current footnote output. Both the ol and the fact that the footnote backlink is at the end of the note seem to pose problems. With this commit, we now create a list of aside (or div) elements, instead of an ordered list. Each element begins with a note number that is linked back to the note reference. (So, the backlink occurs at the beginning rather than the end.) Thanks to @Porges and @lewer.
Docx writer:
- Include abstract title (#8702). Uses localized term for abstract.
Markdown writer:
- Use implicit figures if there's a caption but no alt (#8689, Albert Krewinkel).
Jira reader (Albert Krewinkel):
- Add panel title as nested div (#8681).
- Require jira-wiki-markup 1.5.1 (#8680). This fixes a bug in the parser that caused text between two exclamation marks to be parsed as an image. The first ! of image markup must now be followed by a non-space character; otherwise, the enclosed text is parsed as normal content.
Ms writer:
- Fix handling of Figure (#8660).
ICML writer:
- Fix images with data (#8675). The Contents element should be inside Properties.
LaTeX writer:
- Add Chinese to Babel languages.
- Fix background image in Beamer when there are figure environments (#8671, Martín Pozo).
LaTeX template:
- Add babelfonts variable to default LaTeX template. This allows specifying certain fonts to be used with certain babel languages. Thanks to Frederik Elwert.
- Fix highlight/underline with lualatex (#8707). We need the lua-ul package instead of soul, which doesn't work with lualatex.
Lua (Albert Krewinkel):
- Add pandoc.cli.repl function
- Fix json.encode for nested AST elements. Ensures that objects with nested AST elements can be encoded as JSON.
- Auto-generate docs for pandoc modules.
- Load text module as pandoc.text. This only affects the name in the Lua-internal documentation. It is still possible to load the modules via require 'text', although this is deprecated.
- Move docs from module text to pandoc.text The latter is easier to use and more consistent with the other modules.
- Keep the Lua stack clean A metatable used during initialization was not properly removed from the stack. Likewise, accessing the CommonState from Lua previously led to the pollution of the Lua stack with a left-over value.
- Add function pandoc.format.from_path.
- Allow to get the JSON encoding of log messages.
Text.Pandoc.Format: Add new function formatFromFilePaths [API change] (#8710, Albert Krewinkel).
The old Text.Pandoc.App.FormatHeuristics module has been removed.
In --version, use Windows %APPDATA% variable to describe user data dir (#8686, Pablo Rodríguez).
Text.Pandoc.App.CommandLineOptions: don't lowercase arg to --from/--read (Albert Krewinkel). This prevented users to use custom writers with uppercase characters in their filenames. Format-normalization, including lower-casing of format identifiers, happens during format parsing.
Documentation:
- Add doc/nix.md.
- Add doc/extras.md. This was formally in the website repo.
- doc/lua-filters.md: improve docs for pandoc.zip.
Factor out make_macos_release.sh from the release candidate workflow. Use cabal instead of stack to build the macos binary.
Modify linux/make_artifacts.sh so it will work on cirrus.
Switch to hslua-2.3
Depend on latest releases of texmath, doclayout.

pandoc 3.1.1 (2023-03-05)

EPUB reader: Give additional information in error if the epub zip container can't be unpacked.
TSV reader: don't gobble tabs as whitespace (#8661).
Org reader: accept empty tables (#8659).
LaTeX reader: fix multiplication syntax for tabular (#8658). We recognized *{6}{...} but not *6{...} or *6c.
Docx reader: parse image alt texts in LibreOffice generated files. LibreOffice tags images slightly differently than Word; this change lets the parses take that difference into account when looking for an image description (alt text).
DocBook reader:
- Fix <xref> references to tables in DocBook files (#8626, Pavol Otto).
- Parse figure as a Figure element in the AST (#8668).
JATS reader: avoid generating duplicate figure captions (#8669).
RST reader: align with spec in syntax for role names (#8653). In particular, we now allow colons in row names.
Add note on converting from .doc format to FAQs (#8654).
Trap error in getAppUserDataDirectory (#8648). This can raise an error if pandoc is run in a non-user environment.
LaTeX writer: do not use longtable foot with Beamer (#8638, Albert Krewinkel). The table foot is made part of the table body, as otherwise it won't show up in the output. The root cause for this is that longtable cannot detect page breaks in Beamer.
LaTeX template: Add CJKsansfont and CJKmonofont for XeLaTeX (#8656, Yudong Jin). CJKsansfont and CJKmonofont will be set for xelatex only if CJKmainfont is also provided.
URL style in ConTeXt (#8612, Thomas Hodgson). Previously, a URL like this would be in monospace text: \useURL[url1][https://example.com]. Now, it will match the main text unless the linkstyle variable is set, which controls the styling of all links. Closes #8602.
Asciidoc writer: Properly escape | in table cells (#8665).
asciidoc{,tor} template: fix revision date when author is unset (#8637, arcnmx). Revision line syntax is only valid in combination with an author line, so the date attribute must be set explicitly when the author is missing
HTML writer: allow "track" element to be treated as block-level HTML (#8629).
Include needed polyfill when MathJaX is used (#8625).
JATS writer: include alt-text in <graphic>, <inline-graphic> elements (#8631, Albert Krewinkel).
Chunked HTML writer: Retain metadata in processing sections for chunked HTML (#8620). Previously we suppressed metadata in all but the top page, in order to prevent the title block from being printed on every page. This prevented use of custom variables set by metadata fields. This commit moves to a better solution: a conditional in the default template restricts the title block to the top page.
Lua API:
- Add new function pandoc.system.cputime (Albert Krewinkel). The function returns the CPU time consumed by pandoc and can be used to benchmark Lua computations.
- Add module pandoc.json to handle JSON encoding (#8605, Albert Krewinkel).
Use pandoc-lua-marshal 0.2.1 (Albert Krewinkel). All major AST elements now have __tojson metamethods that return the JSON representation of an element. This allows to JSON-encode these elements with libraries that respect the __tojson metamethod, including dkjson.
Use latest zip-archive. This allows pandoc to open certain epubs that it could not open before.
Use commonmark-extensions 0.2.3.4. This fixes some bugs involving definition lists and inline formatting.
Use latest skylighting-format-context
MANUAL.txt:
- Document chunk-template in defaults file.
- Remove obsolete "raw content in a style" section.
- Revise documentation for --mathml to reflect support in all major browsers (#8667).
docs/custom-readers.md: Update JSON parsing example. The example now uses the built-in pandoc.json library to parse the API output.
doc/press.md: Add article on CiTO in J Cheminform by @egonw.
doc/lua-filters.md: fix typo in run_json_filter (Morgan Willcock).

pandoc 3.1 (2023-02-09)

Fix regression with --print-highlight-style option (#8586).
Add new --chunk-template option (#8581), allowing more control over the filenames in chunked HTML output.
Text.Pandoc.App: Add optChunkTemplate constructor to Opt [API change].
Text.Pandoc.Options: add writerChunkTemplate constructor to WriterOptions [API change].
Text.Pandoc.Chunks: add Data, Typeable, Generic, ToJSON, FromJSON instances for PathTemplate [API change].
Text.Pandoc.Citeproc: Fix bug in metaValueToReference (#8611). This bug caused us to get some repeated content when converting MetaBlock to Inlines.
Textile reader:
- Support footnote backlinks (#8585, Stephen Altamirano).
- Don't allow brackets in URLs (#8582).
ODT reader: fix blockquote indent detection (#3437, Daniel Kessler).
LaTeX writer: include short figure/table caption if one is given (Albert Krewinkel). Short captions are used by LaTeX when generating the list of figures or list of tables. Adding a short caption will now overwrite the full caption in these lists.
Powerpoint writer: fix handling of simple figures (#8565, Albert Krewinkel). This ensures that simple figures are displayed in the same way as before the introduction of a dedicated Figure constructor in the AST.
Improve handling of % in bib(la)tex parsing (#8597, #8595).
Use released skylighting 0.13.2.1
INSTALL.md: direct people to cabal install pandoc-cli.
doc/lua-filters.md: document 'Figure' type and constructor (Albert Krewinkel). Fix typos (Martin Joerg).
Fix link in manual (#8583, Salim B).

pandoc 3.0.1 (2023-01-25)

Fix use of extensions with custom readers (#8571).
Text.Pandoc.Writers.Shared: export setupTranslations [API change]. Use this in HTML and OpenDocument writers, to ensure that translations are set up properly even when we don't go through convertWithOpts.
LaTeX reader: fix regression in macro resolution for environments (#8573).
Chunked HTML writer: Fix handling of images with absolute URLs (#8567).
HTML writer:
- Don't omit newlines in task lists.
- Don't disable checkboxes in task lists (#8562).
Ensure that automatically set variables pandoc-version, outputfile, title-prefix, epub-cover-image, curdir, dzslides-core can be overridden by --variable on the command line. Previously they would create lists in the template Context, which is not desirable.
Fix man page copying in linux/make_artifacts.sh (#8566). Previously we were copying the pandoc-server.1 pandoc page to pandoc-lua.1.
pandoc.cabal: remove pandoc.cabal, stack.cabal from extra-source-files (#8560). The problem is that if these are in extra-source-files, then they get put in the tarball, and then anyone trying to build the source from an unpacked tarball will run into the problem that cabal.project and stack.yaml refer to pandoc-server, pandoc-lua-engine, and pandoc-cli, which aren't in the tarball.
Require texmath 0.12.6 for better MathML output.
Fix typo in Lua filter documentation (Carlos Scheidegger).
Fix formatting of link in pandoc-server.md (James Scott-Brown).
Minor changelog fixups.

pandoc 3.0 (2023-01-18)

Split pandoc-server, pandoc-cli, and pandoc-lua-engine into separate packages (#8309). Note that installing the pandoc package from Hackage will no longer give you the pandoc executable; for that you need to install pandoc-cli.
Pandoc now behaves like a Lua interpreter when called as pandoc-lua or when pandoc lua is used (#8311, Albert Krewinkel). The Lua API that is available in filters is automatically available to the interpreter. (See the pandoc-lua man page.)
Pandoc behaves like a server when called as pandoc-server or when pandoc server is used. (See the pandoc-server man page.)
A new command-line option --list-tables, causes tables to be formatted as list tables in RST (#4564, with Francesco Occhipinti).
New command line option: --epub-title-page=true|false allows the EPUB title page to be omitted (#6097).
--reference-doc can now accept a URL argument (#8535) and load a remote reference doc.
--version output no longer contains version info for dependent packages. Instead, it contains a "Features" line that indicates whether the binary was compiled with support for acting as a server, and for using Lua filters and Custom writers.
A new option --split-level replaces --epub-chapter-level and affects both EPUB and chunked HTML output. --epub-chapter-level will still work but is deprecated.
Multiple input files with --file-scope: fix case where the links are URL-encoded, e.g. with %20 (#8467).
Produce error if --csl is used more than once (#8195, Prat).
Remove deprecated --atx-headers option.
Remove deprecated option --strip-empty-paragraphs.
In --verbose mode add message when running citeproc (as with other filters).
Add new mark extension for highlighted text in Markdown, using == delimiters (#7743).
Add new extensions wikilinks_title_after_pipe and wikilinks_title_before_pipe for commonmark and markdown. (#2923, Albert Krewinkel). The former enables links of style [[Name of page|Title]] and the latter [[Title|Name of page]]. Titles are optional in both variants, so this works for both: [[https://example.org]], [[Name of page]]. The writer is modified to render links with title wikilink as a wikilink if a respective extension is enabled. Pandoc will use wikilinks_title_after_pipe if both extensions are enabled.
Add prefixes to identifiers with --file-scope (#6384). This change only affects the case where --file-scope is used and more than one file is specified on the command line. In this case, identifiers will be prefixed with a string derived from the file path, to disambiguate them. For example, an identifier foo in contents/file1.txt will become contents__file1.txt__foo. Links will be adjusted accordingly: if file2.txt links to file1.txt#foo, then the link will be changed to point to #file1.txt__foo. Similarly, a link to file1.txt will point to #file1.txt. A Div with an identifier derived from the file path will be added around each file's content, so that links to files will still work.
New output format: chunkedhtml. This creates a zip file containing multiple HTML files, one for each section, linked with "next," "previous," "up," and "top" links. (If -o is used with an argument without an extension, it is treated as a directory and the zip file is automatically extracted there, unless it already exists.) The top page will contain a table of contents if --toc is used. A sitemap.json file is also included. The option --split-level determines the level at which sections are to be split.
Support complex figures (Albert Krewinkel, Aner Lucero). There is now a dedicate Figure block constructor for figures. The old hack of representing a figure as Para [Image attr [..alt..] (source, "fig:title")] has been dropped. Here is a summary of figure support in different formats:
- Markdown reader: paragraphs containing just an image are treated as figures if the implicit_figures extension is enabled. The identifier is used as the figure's identifier and the image description is also used as figure caption; all other attributes are treated as belonging to the image.
- Markdown writer: figures are output as implicit figures if possible, via HTML if the raw_html extension is enabled, and as Div elements otherwise.
- HTML reader: <figure> elements are parsed as figures, with the caption taken from the respective <figcaption> elements.
- HTML writer: the alt text is no longer constructed from the caption, as was the case with implicit figures. This reduces duplication, but comes at the risk of images that are missing alt texts. Authors should take care to provide alt texts for all images. Some readers, most notably the Markdown reader with the implicit_figures extension, add a caption that's identical to the image description. The writer checks for this and adds an aria-hidden attribute to the <figcaption> element in that case.
- JATS reader: The <fig> and <caption> elements are parsed into figure elements, even if the contents is more complex.
- JATS writer: The <fig> and <caption> elements are used write figures.
- LaTeX reader: support for figures with non-image contents and for subfigures.
- LaTeX writer: complex figures, e.g. with non-image contents and subfigures, are supported. The subfigure template variable is set if the document contains subfigures, triggering the conditional loading of the subcaption package. Contants of figures that contain tables are become unwrapped, as longtable environments are not allowed within figures.
- DokuWiki, Haddock, Jira, Man, MediaWiki, Ms, Muse, PPTX, RTF, TEI, ZimWiki writers: Figures are rendered like Div elements.
- Asciidoc writer: The figure contents is unwrapped; each image in the the figure becomes a separate figure.
- Classic custom writers: Figures are passed to the global function Figure(caption, contents, attr), where caption and contents are strings and attr is a table of key-value pairs.
- ConTeXt writer: Figures are wrapped in a "placefigure" environment with \startplacefigure/\endplacefigure, adding the features caption and listing title as properties. Subfigures are place in a single row with the \startfloatcombination environment.
- DocBook writer: Uses mediaobject elements, unless the figure contains subfigures or tables, in which case the figure content is unwrapped.
- Docx writer: figures with multiple content blocks are rendered as tables with style FigureTable; like before, single-image figures are still output as paragraphs with style Figure or Captioned Figure, depending on whether a caption is attached.
- DokuWiki writer: Caption and "alt-text" are no longer combined. The alt text of a figure will now be lost in the conversion.
- FB2 writer: The figure caption is added as alt text to the images in the figure; pre-existing alt texts are kept.
- ICML writer: Only single-image figures are supported. The contents of figures with additional elements gets unwrapped.
- OpenDocument writer: A separate paragraph is generated for each block element in a figure, each with style FigureWithCaption. Behavior for single-image figures therefore remains unchanged.
- Org writer: Only the first element in a figure is given a caption; additional block elements in the figure are appended without any caption being added.
- RST writer: Single-image figures are supported as before; the contents of more complex images become nested in a container of type float.
- Texinfo writer: Figures are rendered as float with type figure.
- Textile writer: Figures are rendered with the help of HTML elements.
- XWiki: Figures are placed in a group.
Changes in custom readers/writers:
- It is now possible to have a custom reader and a custom writer for a format together in the same file. The file may also define a custom template for the writer.
- Pandoc now checks the folder custom in the user's data directory for a matching script if it can't find one in the local directory. Previously, the readers and writers data directories were searched for custom readers and writers, respectively. Scripts in those directories must be moved to the custom folder.
- Custom readers used to implement a fallback behavior that allowed to consume just a string value as input to the Reader function. This has been removed, the first argument is now always a list of sources. Use tostring on that argument to get a string.
New module Text.Pandoc.Writers.ChunkedHTML, exporting writeChunkedHtml [API change].
We now set the pandoc-version variable centrally rather than in the writers. One effect is the man writer now emits a comment with the pandoc version.
pandoc-server:
- Add simple CORS support to pandoc-server (#8427).
- Print message to stderr when starting the server.
Docx reader:
- Mark unnumbered headings with class unnumbered (#8148, Albert Krewinkel). This change ensures good conversion results when converting with --number-sections.
- Support parsing of highlighted text.
- Fix handling of oMathPara in w:p with other content (#8483).
ODT reader:
- Fix relative links. ODT adds a ../ to relative links (see #3524); this needs to be removed when converting from ODT.
- Handle "section" elements (#8409).
- Rename Text.Pandoc.Readers.Odt -> Text.Pandoc.Readers.ODT, for consistency with Writers.ODT. Rename readOdt -> readODT. [API change]
DocBook reader:
- Support href on link even in a fragment (#8437). (We now just look for an href attribute without worrying about the namespace.)
- Parse title from imageobject/objectinfo (#8437).
JATS reader:
- Handle uri element in references (#8270).
Ipynb reader:
- Add cell id to attachment filename when storing in MediaBag (#8415). Otherwise attachments with the same name can overwrite each other.
LaTeX reader:
- Skip parenthenized args of toprule, midrule, etc (#8242).
- Handle ## macro arguments properly (#8243).
- Remove unused function toksToString in Parsing module.
- Support more soul commands, including \hl.
- Add unnumbered class for \part* (#8447)
- Fix TEXINPUTS handling (#8392). If TEXINPUTS ends with :, then the system default TEXINPUTS is added. We handle this by just adding the working directory in this case.
- Parse short table caption (see jgm/pandoc-types#103). This is not too useful yet, because writers don't do anything with the short caption.
MediaWiki reader:
- Parse table cell with attributess, to support rowspan, colspan (#8231, Ruqi).
- Refine "blending" rules for MediaWiki links (#8525, Ruqi). The rules for "blending" characters outside a link into the link are described here: https://en.wikipedia.org/wiki/Help:Wikitext#Blend_link These pose a problem for CJK languages, which generally don't have spaces after links. However, it turns out that the blending behavior, as implemented on Wikipedia, is (contrary to the documentation) only for ASCII letters. This commit implements that restriction, which fixes the problem for CJK.
HTML reader:
- Fix regression for <tt> (#8330). It was no longer being parsed as Code (Justin Wood).
RST reader:
- Support mark role for round-trip.
Textile reader:
- Support linked images (#8541).
- Fix strong emph ending with link (#8540).
- Adding a Parser to look for ordered list start attribute numbers if any (#2465, vkraven).
- Handle empty paragraphs (#8487). Also, if attributes are added explicitly to a paragraph, put it in a Div with the attributes.
Markdown reader:
- Allow fenced code block "bare" language to be combined with attributes (#8174, Siphalor), e.g.
```
```haskell {.class #id}
```
```
- Allow table caption labels to start with lowercase t (#8259).
- Grid tables: allow specifying a table foot by enclosing it with part separator lines, i.e., row separator lines consisting only of + and = characters (#8257, Albert Krewinkel). E.g.:
```
+------+-------+
| Item | Price |
+======+=======+
| Eggs | 5£    |
+------+-------+
| Spam | 3£    |
+======+=======+
| Sum  | 8£    |
+======+=======+
```
- Fix implicit_header_references with duplicate headings (#8300). Documentation says that when more than one heading has the same text, an implicit reference [Heading text][] refers to the first one. Previously pandoc linked to the last one instead. This patch makes pandoc conform to the documented behavior.
- Parse highlighted text inside ==..== if mark extension enabled.
Org reader:
- Allow org-ref v2 citations with & prefix (#8302).
- Make #+pandoc-emphasis-pre work as expected (#8360, Amir Dekel).
BibTeX reader:
- Fix handling of % in url field (#7678). % does not function as a comment character inside url (where URL-encoding is common).
- Allow url field in bibtex as well as biblatex (#8287). This field is not officially supported for BibTeX, but many styles can handle it (https://www.bibtex.com/f/url-field/), and others will ignore it.
- Support software type in biblatex <-> CSL conversions (#8504).
- Make sure version field comes through in biblatex (#8504).
BibTeX writer:
- Pass through url even for bibtex (#8287).
Org writer:
- Pass through unknown languages in code blocks (#8278), instead of producing begin_example.
- Use span attributes tag-name in headers as tags (#8513, Albert Krewinkel). This enables round-tripping of tags in Org headings.
EndNote reader:
- Better error when parsing EndNote references fails.
DocBook writer:
- Rename Text.Pandoc.Writers.Docbook -> Text.Pandoc.Writers.DocBook. Rename writeDocbook -> writeDocBook, for consistency with the DocBook reader's naming. [API change]
- Fix position of textobject (#8437). It is a child of inlinemediaobject, not imageobject.
- Add regression tests for #8437.
- Render image alt text using textobject element (#8437).
- Don't indent contents of title element.
- Store "unnumbered" class in DocBook role attribute (#1402, lifeunleaded).
ConTeXt writer (Albert Krewinkel):
- Support syntax highlighting for code.
- Always use \type for inline code. Inline codes that contained curly braces where previously rendered with \mono; this led to unexpected results when the presentation of \type was customized, as those changes would not have been applied to code rendered with \mono.
- Add support for unlisted, unnumbered headings (#8486).
- Support tagging extension (Albert Krewinkel). Paragraphs are enclosed by \bpar and \epar commands, and highlight commands are used for emphasis. This results in much better tagging in PDF output.
LaTeX writer:
- Do not repeat caption on headless tables (Albert Krewinkel). The caption of headless tables was repeated on each page that contained part of the table. It is now made part of the "first head", i.e. the table head that is printed only once.
- Add separator line between table's body and its foot (Albert Krewinkel).
- Ignore languages with no babel equivalent, instead of generating an invalid command in the preamble (#8325).
- Use \includesvg for SVGs and include the svg package (#8334).
- Use soul instead of ulem for strikeout, underline (#8411). This handles things like hyphenation, line breaks, and nonbreaking spaces better.
- Use \toprule\noalign{} instead of \toprule() in tables, and similarly for \midrule and \bottomrule (#8223). This facilitates redefining \toprule, \midrule, and \bottomrule without needing to gobble the ()s. (Those who redefine these macros on the assumption that they will be followed by () may need to change their definitions.)
- Support highlighted text for Span with class mark.
JATS writer:
- Use <break/> for LineBreak in the limited contexts that accept it (#8344).
- Officially deprecate writeJATS in favor of writeJatsArchiving.
RTF writer:
- Add space after unicode escape commands (#8264). This fixes a bug that caused characters to disappear after unicode escapes.
RST writer:
- Render tables as list tables when the --list-tables option is specified (writerListTables) (#4564, Francesco Occhipinti).
- Improve inline escaping rules (#8380).
- Use special mark role for Span with class mark.
Commonmark writer:
- Ensure that we don't have blank lines in raw HTML (#8307).
HTML writer:
- Only add role attribute in HTML5 (#8241). It is not valid in HTML4.
- Avoid aria-hidden in code blocks for HTML4 (#8241).
- Only treat . . . as a slide pause in slides, and not in regular HTML output (#8281).
- Properly merge classes for headings of level > 6 (#8363).
- Prevent <a> inside <a> (#7585). If a link text contains a link, we replace it with a span.
- Replace deprecated aria roles for bibliography entries (#8354). doc-biblioentry -> listitem, doc-bibliography -> list.
- Remove obsolete stuff about mathml-script. This was a shim we used to include for mathml support. We don't do anything with this any more, so this is dead code.
- Include math links if there are raw commands or environments that can be interpreted as math e.g. by MathJax (#8469).
- Add prooftree to list of math environments (#8462). This will cause raw LaTeX prooftree environments to be rendered appropriately when --mathjax is used.
HTML, Markdown writers: filter out empty class attributes (#8251). These should not be generated by any pandoc readers, but they might be produced programatically.
Markdown writer:
- Avoid HTML fallbacks in the generated TOC (Albert Krewinkel, #8131). The generated table of contents usually has IDs for each TOC link, allowing to link back to specific parts of the TOC. However, this leads to unidiomatic markup in formats like gfm, which do not support attributes on links and hence fall back to HTML. The IDs on TOC items are now removed in that case, leading to more aesthetic TOCs.
- Escape ! before [ (#8254).
- Support mark extension.
AsciiDoc writer:
- In link text, only replace commas with entities when they're in Str elements. If a link contains an image, it may have attributes, and the commas there should not be converted (see #8437, #8070).
ODT writer:
- Fix relative links (#3524).
Docx writer:
- Better handling of tables in lists (#5947). Previously the content of each list cell was indented when the table belonged to a list item.
- Indent tables in list items (#5947).
- Adjust correct attribute on lang element (#7022). For East Asian languages, we need to adjust w:eastAsia rather than w:val. This allows normal fonts to be used for any Latin-font text. Similarly, for bidi languages, we need to adjust w:bidi rather than w:val. We treat he and ar as bidi languages, zh, ja, ko as East Asian languages.
- Support relative image widths (Albert Krewinkel). Image widths given in percent are interpreted to be relative to the text width. Previously, percent widths were taken relative to the image's native size, inconsistently with other writers.
- Avoid using 'error' for unassigned table cells (#8468). Instead, throw a regular pandoc error.
- Render a Span with class mark as highlighted. Currently yellow is hardcoded.
MediaWiki writer:
- Use the 'new' table structure, so that colspan and rowspan are supported (Wout Gevaert).
Man writer:
- Use UTF-8 by default for non-ascii characters (#8507). Only use groff escapes if --ascii has been specified on the command line (writerPreferAscii).
ICML writer:
- Use Contents element for images with raw data instead of a link with a data: uri (#8398).
EPUB writer:
- Refactor to use Text.Pandoc.Chunks.
- Refactored and simplified code.
- Make title page optional (#6097).
Ms writer:
- Properly format display equations (#8308).
- Remove -C option on PSPIC. Some old versions don't support this option, and since it's the default it shouldn't be necessary.
XWiki writer:
- Use template if it is specified (#8296). Previously templates were ignored.
LaTeX template:
- Set fonts after Beamer theme (Jeremie Knuesel). Beamer themes such as metropolis and saintpetersburg change the default fonts. This change gives precedence to the user font settings by moving them after the loading of the Beamer theme.
- Set \babelfont when mainlang and lang are specified and pdflatex is not being used (#8538). This is needed for good results in Arabic.
- Add variable urlstyle (#8429, Amar Al-Zubaidi). This is set to same by default, so users should not experience any change.
HTML template:
- Remove default font size, line height and font family in default inline css (#8423). mainfont, fontsize, and linestretch can still be used as before; the only difference is that we no longer provide opinionated defaults. This commit also adds a maxwidth variable that sets max-width; if not set, 36em is used as a default.
- Add code { hyphens: manual; }.
- Use styles.citations.html partial in styles.html.
- Fix class name hanging -> hanging-indent in styles.citations.html.
- Put Consolas before Lucida Console for code font (#8543). This is to prevent Lucida Console from being used on Windows, where it causes spacing issues in some applications, with boldface glyphs wider than regular ones.
EPUB CSS changes: Reduce the amount of inline CSS used for EPUBs (#8379). Almost everything is now in the default EPUB CSS (data/epub.css), which can be overridden either by putting epub.css in the user data directory or by using --css on the command line. Inline styles are only used for syntax highlighting (which depends on the style specified, and is only included on pages with highlighted code) and for bibliography formatting (which can depend on the CSL style, and is only used in the page containing the bibliography).

Note that, for compatibility with older readers, we don't use flexbox to style column/columns divs by default, as we do in HTML. Instead, we use an older method which only works when there are two column divs inside a columns div. If you need more than two columns and aren't worried about support for older EPUB readers, you can modify the default CSS (there is a comment in the CSS telling you what to do).
Reveal.js template: prevent line-wrapping of parallax options (#8503, Albert Krewinkel).
reference.pptx: Remove unsupported element (#8342, #6338, Link Swanson). The default template contained text above the header, which can mislead users into thinking there is a way to put text there using pandoc.
Text.Pandoc.Readers.Metadata:
- Fix metadata parsing corner case (#8465).
- Don't fail on inline metadata beginning with newline (#8358).
Text.Pandoc.App:
- Move initial input-to-Pandoc code to internal submodule (Albert Krewinkel).
- Change parseOptionsFromArgs and parseOptions (#8406) They now return Either OptInfo Opt. [API change]
- Add OptInfo type [API change].
- Add handleOptInfo function. This performs the IO actions for things like --version that were previously done in parseOptionsFromArgs [API change].
- convertWithOpts: add argument for a ScriptingEngine [API change].
- Unify check for standalone output (Albert Krewinkel).
- New optEpubTitlePage field on Opt [API change] (#6097).
- Remove optEpubChapterLevel, add optSplitLevel [API change].
- Export IpynbOutput(..) [API change].
Text.Pandoc.App.OutputSettings:
- Remove unused field outputWriterName in OutputSettings.
Text.Pandoc.Citeproc:
- Check both extension and mime type to determine bibliography type when the bibliography is fetched remotely (#7151).
- CslJson: allow an object with items property in addition to an array of references. This is what is returned by e.g. https://api.zotero.org/groups/904125/items?v=...&format=csljson
- Require a digit for an implicit "page" locator inside explicit locator syntax {...} (#8288). Previously a locator specified as {} would be rendered as p. with nothing after it.
- Update sub verbo to sub-verbo (#8315). This is a change in the term's canonical name in citeproc. As a result of this change, sub verbo locators have not worked in pandoc since citeproc 0.7.
- Text.Pandoc.Citeproc.MetaValue: remove unused function metaValueToPath.
- Add internal module Text.Pandoc.Citeproc.Name (#8345). This exports toName, which previously had been part of T.P.Citeproc.BibTeX, and allows for cleaner module dependencies.
Export module Text.Pandoc.Slides [API Change] (Albert Krewinkel).
Add new module Text.Pandoc.Format [API change] (Albert Krewinkel). The module provides functions and types for format spec parsing and processing. The function parseFormatSpec was moved from Text.Pandoc.Extensions to the new module and renamed to parseFlavoredFormat. It now operates in a PandocMonad and is based on the updated types.
Text.Pandoc.Sources:
- Add UpdateSourcePos instances for String and strict and lazy ByteString [API change].
Text.Pandoc.Extensions:
- Fix JSON decoding of Extensions (#8352, Albert Krewinkel).
- Add new exported function readExtension [API change].
- Remove parseFormatSpec [API change]. This has been moved to Text.Pandoc.Format and renamed as parseFlavoredFormat (Albert Krewinkel).
- Simpler implementation of Extensions based on Set (benchmarks show no performance penalty).
- Add CustomExtension constructor to Extension [API change].
- Remove Bounded, Enum instances for Extension.
- Add extensionsToList function.
- Revise readExtension so it can handle CustomExtension, and so that it returns a Text rather than Maybe Text.
- Add showExtension [API change].
- Add Ext_mark extension [API change].
- Add Ext_tagging constructor [API change] (Albert Krewinkel).
- Add Ext_wikilinks_title_after_pipe, Ext_wikilinks_title_before_pipe [API change] (Albert Krewinkel).
Text.Pandoc.PDF:
- Fix papersize on PDF generation via ms (#8403). We need to set an option in pdfroff in addition to including a macro in the ms file. With this fix, -Vpapersize=a4 should be sufficient to produce A4 PDF via ms.
- Change default background color of PDFs generated via HTML (#8422, Marcin Serwin).
Text.Pandoc.MIME:
- Base module on package mime-types, which is already a transitive dependency (#8277, Albert Krewinkel).
- Remove deprecated overrides (#8292).
Text.Pandoc.XML:
- Re-export lookupEntity from commonmark-hs [API change].
Text.Pandoc.Parsing:
- Remove gratuitious renaming of Parsec types. We were exporting Parser, ParserT as synonyms of Parsec, ParsecT. There is no good reason for this and it can cause confusion. Also, when possible, we replace imports of Text.Parsec with Text.Pandoc.Parsing. The idea is to make it easier, at some point, to switch to megaparsec or another parsing engine if we want to. New (re-)exports: Stream(..), updatePosString, SourceName, Parsec, ParsecT. Removed exports: Parser, ParserT [API change].
- Export errorMessages, messageString [API change].
- Export fromParsecError, which can be used to turn a parsec ParseError into a regular PandocParseError (#8382) [API change].
- Remove nested [API change]. It was not being used, and in fact it was a bad idea from the beginning, as it had no hope of solving the problem it was introduced to solve.
- Change characterReference, charsInBalanced. characterReference so they now return a Text (some named references don't correspond to a single Char). Use the the lookupEntity function from commonmark-hs instead of the slow one from tagsoup [API change].
- charsInBalanced now takes a Text parser rather than a Char parser as argument [API change].
Text.Pandoc.Shared:
- Export textToIdentifier [API change].
- Remove deprecated crFilter. [API change]
- Remove deprecated deLink. [API change]
- Deprecate notElemText.
- Deprecate makeMeta.
- Remove pandocVersion (now available in Text.Pandoc.Version as pandocVersionText).
- Remove findM [API change]. This was only used in one place, and can be replaced with simpler code.
- Remove deprecated makeMeta [API change].
- Remove ordNub [API change]. This is just nubOrd from Data.Containers.ListUtils.
- Remove mapLeft [API change]. This is just a synonym for Bifunctor.first.
- Remove elemText, notElemText [API change].
- Drop export of pandocVersion and pandocVersionText, which are now exported by Text.Pandoc.Version.
- Remove escapeURI, isURI. These are now exported by Text.Pandoc.URI, and removing them from Shared helps make the module structure more straightforward.
- Use LineBreak as default block sep in blocksToInlines. (#8499, Albert Krewinkel). This change also affects the pandoc.utils.blocks_to_inlines Lua function.
- defaultUserDataDir is no longer exported (it has been moved to T.P.Data) [API change].
- New function figureDiv, offering offers a standardized way to convert a figure into a Div element (Albert Krewinkel) [API change].
Text.Pandoc.Writers.Shared:
- Export htmlAddStyle, htmlAlignmentToString and htmlAttrs [API change] (Wout Gevaert).
- Use 'literal tag' instead of 'text (T.unpack tag)' in tagWithAttrs (Wout Gevaert).
- toTableOfContents: handle nested Divs better (#8402).
Rename Text.Pandoc.Network.HTTP -> Text.Pandoc.URI. This is still an unexported internal module. Export urlEncode, escapeURI, isURI, schemes, uriPathToPath. Drop exports of schemes and uriPathToPath.
Text.Pandoc.URI isURI: don't require non-ASCII characters to be escaped (#8508).
Rename Text.Pandoc.Readers.LaTeX.Types -> Text.Pandoc.TeX (internal module).
Text.Pandoc.Options:
- WriterOptions now has a field writerListTables, specifying that list tables be used in RST output [API change].
- New writerEpubTitlePage field on WriterOptions (#6097) [API change].
- Remove writerEpubChapterLevel, add writerSplitLevel [API change].
Text.Pandoc.Filter:
- Export applyFilters [API change].
- Export applyJSONFilter [API Change] (Albert Krewinkel).
- Parameterize applyFilters over scripting engine [API change] (Albert Krewinkel).
New exported module Text.Pandoc.Chunks [API change]. This module provides functions to split Pandoc documents into chunks to be rendered in separate files, e.g. one per section. Internal identifiers are rewritten appropriately to point to the new locations (#6122).
Text.Pandoc.Readers:
- Change argument type of getReader, so it takes a FlavoredFormat instead of a Text [API change] (Albert Krewinkel).
Text.Pandoc.Writers:
- Change argument type of getWriter, so it takes a FlavoredFormat instead of a Text [API change] (Albert Krewinkel).
Text.Pandoc.Templates:
- Do not try to normalize input to getDefaultTemplate (Albert Krewinkel). The function getDefaultTemplate no longer splits off extension modifers from the given format, as that conflicts with using custom writers as formats. Haskell library users should use getDefaultTemplate <=< (fmap formatName . parseFlavoredFormat) if the input format can still contain extensions. The same is true for compileDefaultTemplate, which calls getDefaultTemplate internally
- Add Wrapper type documentation (#8490, William Rusnack).
New exported module Text.Pandoc.Scripting (Albert Krewinkel). The module contains the central data structure for scripting engines (e.g., Lua) [API change].
Text.Pandoc.Error:
- Add new PandocError constructor PandocNoScriptingEngine [API change] (Albert Krewinkel).
- Add new PandocError constructor PandocFormatError [API change] (Albert Krewinkel). The new error is used to report problems with input or output format specifications.
- Add new PandocError constructor PandocNoTemplateError (Albert Krewinkel).
- Remove PandocParsecError constructor from PandocError (#8385). Henceforth we just use PandocParseError.
New module Text.Pandoc.Version, exporting pandocVersionText and pandocVersion [API change]. pandocVersion returns a Version instead of a Text, which is consistent with pandocTypesVersion.
Text.Pandoc.Class:
- Make getPOSIXTime, getZonedTime sensitive to SOURCE_DATE_EPOCH environment variable if set (#7093). (getTimestamp was already sensitive.) This ensures that EPUB builds are reproducible.
- Text.Pandoc.Class no longer exports readDataFile, readDefaultDataFile, setTranslations, and translateTerm [API change].
- Text.Pandoc.Class now exports checkUserDataDir [API change].
T.P.Class.IO: export function writeMedia [API change] (Albert Krewinkel). This is useful for the pandoc.mediabag module.
Separate out Text.Pandoc.Data and Text.Pandoc.Translations from Text.Pandoc.Class (#8348). This makes Text.Pandoc.Class more self-contained.
- Text.Pandoc.Data is now an exported module, providing readDataFile and readDefaultDataFile (both formerly provided by Text.Pandoc.Class), and also getDataFileNames (formerly unexported in Text.Pandoc.App.CommandLineOptions) and defaultUSerDataDir (formerly provided by Text.Pandoc.Shared). [API change]
- Text.Pandoc.Translations is now an exported module (along with Text.Pandoc.Translations.Types), providing readTranslations, getTranslations, setTranslations, translateTerm, lookupTerm, readTranslations, Term(..), and Translations [API change].
Text.Pandoc now exports Text.Pandoc.Data and setTranslations and translateTerm {API change].
Export module Text.Pandoc.Class.IO [API change]. The module is useful when defining instances of class PandocMonad for types that are also instances of MonadIO.
Remove modules Text.Pandoc.Writers.Custom and Text.Pandoc.Readers.Custom [API Change] (Albert Krewinkel). The functions writeCustom and readCustom are available from module Text.Pandoc.Lua.
Text.Pandoc.Server:
- Split this module into a separate package, pandoc-server, allowing the pandoc library to be compiled without server support.
- Return object if JSON is accepted. Previously we just returned a JSON-encoded string. Now we return something like:
```
{
    "output": "<p>hello</p>"
    "base64": false,
    "messages": [
        {
            "message": "Not rendering RawInline (Format \"tex\") \"\\\\noe\"",
            "verbosity": "INFO"
        }
    ],
}
```
  This is a change in the pandoc-server JSON API.
- Set translations in the writer based on lang metadata.
- Return error in JSON object if response is JSON.
- Remove parseServerOpts. [API change]
Text.Pandoc.Lua:
- This module has been moved to a separate package, pandoc-lua-engine.
- Export applyFilter, readCustom, and writeCustom. No longer export the lower-level function runFilterFile [API change].
- Change type of applyFilter [API Change] (Albert Krewinkel). The module Text.Pandoc.Filter.Lua has been merged into Text.Pandoc.Lua. The function applyFilter now has type
```
applyFilter :: (PandocMonad m, MonadIO m)
            => Environment-> [String]-> FilePath-> Pandoc-> m Pandoc
```
  where Environment is defined in Text.Pandoc.Filter.Environment.
- Export new function getEngine [API Change]. The function returns the Lua scripting engine.
- Add unexported modules T.P.Lua.Reader, T.P.Lua.Writer. These contain the definitions of readCustom and writeCustom that were previously in T.P.Readers.Custom and T.P.Writers.Custom.
- Cleanup module dependencies, for a cleaner module dependency graph.
- The writeCustom function has changed to return a Writer and an ExtensionsConfig [API change]. This allows ByteString writers to be defined.
- The readCustom function has changed to return a Reader and an ExtensionsConfig [API change].
Lua subsystem (Albert Krewinkel):
- The whole Lua subsystem has been moved to a separate package, pandoc-lua-engine. pandoc does not depend on it. convertWithOpts has a new parameter that can be used to pass in the scripting engine defined in pandoc-lua-engine (or a different one, in theory).
- Fix the behavior of Lua "Version" objects under equality comparisons (#8267).
- Support running Lua with a GC-collected Lua state.
- Ensure that extensions marshaling is consistent.
- Produce more informative error messages for pandoc errors. Errors are reported in Lua in the same words in which they would be reported in the terminal.
- Add new module pandoc.format. The module provides functions to query the set of extensions supported by formats and the set of extension enabled per default.
- Add function pandoc.template.apply.
- Add function pandoc.template.meta_to_context. The functions converts Meta values to template contexts; the intended use is in combination with pandoc.template.apply.
- Allow Doc values in WriterOptions.variables. The specialized peeker and pusher function for Context Text values does not go via JSON, and thus keeps Doc values unchanged during round-tripping.
- Fix rendering of Lua errors in Lua, so that the Error running Lua message is not prepended multiple times.
- Add new module pandoc.zip.
- Allow strings in place of compiled templates (#8321). This allows to use a string as parameter to pandoc.template.apply and in the WriterOptions template field.
- Rename reader_extensions/writer_extensions globals as Extensions (#8390).
- Add pandoc.scaffolding.Writer (#8377). This can be used to reduce boilerplate in custom writers.
- Fix peeker for PandocError (Albert Krewinkel). String error messages were incorrectly popped of the stack when retrieving a PandocError.
- Add functions pandoc.text.toencoding, pandoc.text.fromencoding (#8512, Albert Krewinkel).
- Add pandoc.cli module. Allow processing of CLI options in Lua.
- Support -D CLI option for custom writers. A new error PandocNoTemplateError (code 87) is thrown if a template is required but cannot be found.
- Allow table structure as format spec. This allows to pass structured values as format specifiers to pandoc.write and pandoc.read.
- Add function pandoc.mediabag.write (Albert Krewinkel).
- Add module pandoc.structure (Albert Krewinkel). The function make_sections has been given a friendlier interface and moved to the new module; the old pandoc.utils.make_sections has been deprecated.
Custom writers:
- The global variables PANDOC_DOCUMENT and PANDOC_WRITER_OPTIONS are no longer set when the writer script is loaded. Both variables are still set in classic writers before the conversion is started, so they can be used when they are wrapped in functions.
- Deprecate classic custom writers.
- Add function pandoc.write_classic. The function can be used to convert a classic writer into a new-style writer by setting it as the value of Writer:
```
Writer = pandoc.write_classic
```
  or to fully restore the old behavior:
```
function Writer (doc, opts)
  PANDOC_DOCUMENT = doc
  PANDOC_WRITER_OPTIONS = opts
  load(PANDOC_SCRIPT_FILE)()
  return pandoc.write_classic(doc, opts)
end
```
- Support extensions in custom writers. Custom writers can define the extensions that they support via the global writer_extensions. The variable's value must be a table with all supported extensions as keys, and their default status as values. For example, the below specifies that the writer supports the extensions smart and sourcepos, but only the smart extension is enabled by default:
```
writer_extensions = {
  smart = true,
  sourcepos = false,
}
```
- Custom writers can define a default template via a global Template function; the data directory is no longer searched for a default template. Writer authors can restore the old lookup behavior with
```
Template = function ()
  local template
  return template.compile(template.default(PANDOC_SCRIPT_FILE))
end
```
Custom readers:
- Support extensions in custom readers. Custom readers, like writers, can define the set of supported extensions by setting a global. E.g.:
```
reader_extensions = {
  smart = true,
  citations = false,
}
```
Use latest versions of commonmark-extensions, texmath, citeproc, gridtables, and skylighting.
Use pandoc-types 1.23. This adds the Figure Block constructor and removes the Null Block constructor.
Require aeson >= 2.0.
Use jira-wiki-markup 1.5.0 (#8511, Albert Krewinkel). Fixes issues with icon-like sequences at the beginning of words.
Use doctemplates 0.11, avoiding a transitive dependency on HsYAML.
Use skylighting 0.13.1.2.
Allow mtl 2.3.1 (Alexander Batischev).
Use latest skylighting-format-context.
Allow building with mtl 2.3.
Remove lua53 flag. We now only support Lua 5.4.
Add hie.yaml for haskell language server.
Add tools/latex-package-dependencies.lua.
Update default CSL with latest chicago-author-date.csl.
make_artifacts.sh: various small improvements.
Remove sample.lua from data files (#8356).
Documentation:
- Deprecate PANDOC_WRITER_OPTIONS in custom writers (Albert Krewinkel).
- Document pandoc.write_classic (Albert Krewinkel).
- Document new table features (Albert Krewinkel).
- Clarify what background-image does in reveal.js (#6450).
- Documentation improvements for blank_before_blockquote (#8324, Pranesh Prakash).
- Update grid table documentation (#8346).
- Add note about MathJax fonts to --embed-resources.
- Use cabal's --package-env more (#8317, Artem Pelenitsyn).
- Modify Zerobrane instructions to use Lua 5.4 (#8353, Ian Max Andolina).
- Fix documentation for highlight-style in pandoc-server.md.
- Fix link to fedora package site (#8246, Akos Marton).
- Rephrase paragraph on format extensions (#8375, Ilona Silverwood).
- Update README.template (#8496, Sven Wick).
- Fix a tiny typo in lua-filters.md (TomBen).
- Clarify that --css should be used with -s.
- Clarify font selection for pdf -t ms (#8421, nbehrnd).
- Clarify docs for --metadata-file (#8459).
- Fix typo in epub.md (Vladimir Alexiev).
- Add missing backtick in filters.md (R. N. West).
- doc/lua-filters.md: add documentation for pandoc.format (Albert Krewinkel).
- Fix epub-embed-font documentation (#8455, Terence Eden).
- Removed obsolete Templates section in CONTRIBUTING.md.
- Add manual section on accessible PDFs, archiving standards (#8312, Albert Krewinkel).
Tests.Command: remove unused runTest.
Add pandoc-lua.1 man page.
Improve shell.nix.
Add tools/moduledeps.lua for inspecting the internal module dependency tree.
Fix macOS zip so pandoc-server is a symlink. This cuts its size by 2x.
CI: Improve CI speed by caching more, eliminating macos builds, and splitting benchmarks into a separate action, run by manual dispatch. (We still test that benchmarks build in the regular CI.) The cache can be expired manually by modifying the secret CACHE_VERSION.
Remove the unnecessary Setup.hs from pandoc. Cabal does not need this with build-type 'simple'.
Add pandoc-lua and pandoc-server (symlinks) and their man pages to releases.
Use hslua-cli package for pandoc-lua interface (Albert Krewinkel).
Add server flag to pandoc-cli, allowing it to be compiled without server support.
pandoc-cli: Allow building a binary without Lua support (Albert Krewinkel). Disabling the lua cabal flag will result in a binary without Lua.
Move --version handling to pandoc-cli. We need it here in order to print information about whether server and Lua support have been compiled in.
Move nightly flag from pandoc to pandoc-cli (#8339).
Makefile changes:
- make help will now print all the targets and what they do.
- Add targets: coverage, weeder, moduledeps, prerelease, ghcid, repl, linecounts, hie.yaml, binpath.
- Note that you can alias pandoc=`make binpath` for convenient local testing of a build.
- Rename quick-cabal -> build, quick-test -> test.
- Exclude tests from SOURCEFILES.
Factor out xml-light into an internal library.
Add CITATION.cff (#8434).
Move trypandoc to a separate repository, jgm/trypandoc.

pandoc 2.19.2 (2022-08-22)

Fix regression with data uris in 2.19.1 (#8239). In 2.19.1 we used the base64URL encoding rather than base64.
pandoc-server: handle citeproc parameter as documented (#8235).
Org reader: treat emacs-jupyter src blocks as code cells (#8236, Albert Krewinkel). This improves support for notebook-like org files that are intended to be used with emacs-jupyter package.
HTML writer and templates: revert to using width property for column widths (Albert Krewinkel). The default flex and overflow-x properties of a column are set to auto. In combination, these changes allow to get good results when using columns with or without explicit widths.
Org writer (Albert Krewinkel):
- Add support for jupyter nodebook cells (#6367).
- Prefix code language of ipynb code blocks with jupyter-. This is the convention used by the emacs-jupyter package.
- Keep code block attributes as header args. This allows to keep more information in the resulting src blocks, making it easier to roundtrip from or through Org. Org babel ignores unknown header arguments.
- Add code block identifier as #+name to src blocks.
Fix some typos in the codebase (luz paz).
Require hslua-module-path 1.0.3 (#8228, Albert Krewinkel).

pandoc 2.19.1 (2022-08-18)

Add server capabilities.
- New exported module Text.Pandoc.Server [API change].
- The pandoc executable now starts up a web server when renamed or symlinked as pandoc-server, and functions as a CGI program when renamed or symlinked as pandoc-server.cgi. See the man page for pandoc-server for full documentation.
Text.Pandoc.App.Opts: Redo FromJSON for Opt so that optional values can be omitted (in which case the values from defaultOptions are used).
Org reader: treat "abstract" block as metadata (Albert Krewinkel, #8204). A block of type "abstract" is assumed to define the document's abstract. It is transferred from the main text to the metadata.
Org template: add abstract from metadata as block of type "abstract" (#8204).
HTML writer: use flex property for column widths (Albert Krewinkel, #8232).
LaTeX writer:
- Add label to tables that have an identifier (Albert Krewinkel, #8219). Tables with an identifier are marked with a \label. A caption is always included in this case, even if the caption is empty.
- Use \textquotesingle for straight quotes in text.
- Fix widths of multicolumn cells (#8218).
LaTeX template: fix behavior of colorlinks variable (Albert Krewinkel, #8226). Fixes a regression in 2.19 that required the boxlinks variable to be set in addition to the usual link coloring variables. Otherwise links were never colored in LaTeX PDF output.
Text.Pandoc.Highlighting: Export lookupHighlightingStyle [API change]. Previously this lived in an unexported module Text.Pandoc.App.CommandLineOptions, under the name lookupHighlightStyle.
Text.Pandoc.App:
- Remove unneeded MonadIO constraints in readSources.
- Factor out convertWithOpts' from convertWithOpts. This runs in any PandocMonad, MonadIO, MonadMask instance. So far it is not exported, but it might find a use later.
Support --strip-comments in commonmark/gfm (#8222). This change makes the commonmark reader sensitive to readerStripComments.
Lua: add function pandoc.utils.citeproc (Albert Krewinkel). The function runs the citeproc processor on a Pandoc document. Exposing this functionality to Lua allows to make citation processing part of a filter or writer, simplifies the creation of multiple bibliographies, and enables the use of varying citation styles in different parts of a document.
Refactor linux/make_artifacts.sh.
Update INSTALL.md installation from source instructions.
Use base64 package instead of base64-bytestring. It is supposed to be faster and more standards-compliant.
trypandoc improvements:
- Add dropdown with canned examples.
- Add citeproc support.
- Support csv, bibliographic and binary formats.
- Add load from file.
- Add permalink. Don't always reload page.
- Use vanilla JS and CSS + the new pandoc-server.cgi.
Allow haddock-library-1.11.0.
Convert tool/extract-changes.hs to a Lua filter.

pandoc 2.19 (2022-08-03)

Add --embed-resources flag (Elliot Bobrow, #7331). This can be used to embed resources without implying --standalone. Deprecate --self-contained in favor of --embed-resources --standalone.
Allow environment variable interpolation in highlight-style and pdf-engine fields in defaults files (#8061; Jaehwang Jung, #8073).
Allow placing custom readers and writers in user data directory (Albert Krewinkel, #8112) (readers and writers subdirectories).
Add tsv (tab separated values) as an input format (#7974). [API change]: Text.Pandoc.Readers.CSV now exports readTSV. Internal change: In Text.Pandoc.CSV, CSVOptions has changed so that csvQuote takes a Maybe value.
Add tex_math_dollars to gfm default extensions (reflecting gfm's new support for math).
RST, Org, Markdown readers: support rowspans and colspans in grid tables (#8202, Albert Krewinkel). Note: the writers does not yet support these more complex grid table features, so these complex grid tables will not round-trip.
HTML, LaTeX, and MediaWiki readers: use formatCode (#8162, #8129, Elliot Bobrow). This moves formatting from inside inline code elements to the outside, since pandoc's Code element only takes string content.
Markdown reader:
- Don't parse inline notes with blank lines inside (#8028).
- Allow attributes in special spans (e.g. smallcaps, underline) (Albert krewinkel, #4102). These spans are parsed as SmallCaps or Underline elements, but any attributes are included in a wrapping Span.
HTML reader:
- Allow sublists that are not marked as items (Albert Krewinkel, #8150). This is technically invalid HTML, but it can be found in the wild and browsers handle it.
Org reader (Albert Krewinkel):
- Recognize absolute paths on Windows (Albert Krewinkel, #8201).
- Recognize {webp,jxl} files as images (YI).
- Allow attrs for Org tables (Albert Krewinkel, #8049). Tables with attributes are no longer wrapped in Div elements; attributes are added directly to the table element.
- Support line selection in INCLUDE directives (Brian Leung, #8060).
- Fix Post / Pre mixup when setting emphasis chars (Amir Dekel, #8134).
LaTeX reader:
- Support \includesvg (#8027).
- Unescape characters in \lstinline inside \passthrough (#8179).
- Improve mathEnvWith (#8122). When converting e.g. an align environment to an aligned environment inside a Math element, we need to include a newline before the \end{aligned}, since the previous line might end in a comment.
- Fix treatment of extensions for \input in LaTeX reader (#8092). Previously we required a .tex extension, but TeX allows any extension for \input (as opposed to \include).
RTF reader:
- support \nosupersub (#8170).
TikiWiki reader:
- Support underlined text
DocBook reader:
- Improved reading <xref> elements (Frerich Raabe, #8065).
JATS reader:
- Strip ref- prefix from ref id in xref (#8007).
- Support edition in references (#8087).
RIS reader:
- Make parser more forgiving (#8034). Allow blank lines after entries. Allow entries with no space after the -, provided they just have a newline, e.g. DB -\n.
- Get right order of names (#8055).
MediaWiki reader:
- Allow HTML comment after row start (#8110).
DokuWiki reader:
- The tex_math_dollars extension is now supported for dokuwiki (but off by default) (#8178).
- Content inside <latex>...</latex> is parsed as raw LaTeX inline, and inside <LATEX>..</LATEX> as raw LaTeX block (#8178).
- The behavior of <php>...</php> is changed, so that instead of producing a code block, it produces raw HTML with <?php ... ?>.
LaTeX writer:
- Improve grouping with autocites (#8088).
- Extend list of book documentclasses (Wentau Han, #8053).
- Fix width of multicolumn cells (Albert Krewinkel, #8090). Cells spanning multiple columns must be given an explicit width, calculated from the table properties.
- Beamer: allow containsverbatim as alternative to fragile (#8080).
HTML writer:
- Add 'footnotes' identifier to footnotes section (#8043).
- Fix bug with --number-offset. This formerly caused section divs to be produced, even when --section-divs was not specified (#8097).
- Use CSS flexboxes for columns (Albert Krewinkel). This allows an arbitrary number of columns, while the previous approach assumed exactly two columns.
- Allow "spanlike" classes to be combined (see #8194). Previously classes like "underline" and "marked" had to be the first class in a span in order for the span to be interpreted as a "ul" or "mark" element. This commit allows these special classes to be "stacked," e.g. [test]{.mark .underline}; in addition, the special classes are no longer required to come first in the list of classes.
- Avoid doubled style attribute when height and width are added to style because of an image, but the image already has a style attribute (#8047).
- Do not include the deprecated doc-endnote role (#8030). doc-endnote was deprecated in DPUB-ARIA 1.1.
- Remove extra soft break for tasklist (black-desk, #8142). Browser will display the extra newline character between checkbox and text as a space, which make tasklist items cannot be aligned.
EPUB writer:
- Allow choice of math method for v3 (#8164). Previously we always used MathML for math in EPUB3, because the spec includes MathML. But this is not widely supported by readers, so it seems better to allow users to choose their math method as they can with EPUB2 or HTML. NOTE: Existing workflows that produce EPUBv3 documents including math will be affected by this change. You must add --mathml to your command line if you want to continue producing MathML.
RST writer:
- Fix missing spaces with nested inlines (#8182).
- Always escape literal backslash (#8178).
Ms writer:
- Add comment in preamble stating generator.
- Fix roff ms syntax highlighting definitions (#8175, thanks to Branden Robinson).
ConTeXt writer:
- Support complex table structures (Albert Krewinkel, #8116). The following table feature are now supported in ConTeXt:
  - colspans,
  - rowspans,
  - multiple bodies,
  - row headers, and
  - multi-row table head and foot.
  The wrapping placetable environment is also given a reference option with the table identifier, enabling referencing of the table from within the document.
- Unify link handling (Albert Krewinkel, #8096). Autolinks, i.e. links with content that's the same as the linked URL, are now marked with the \url command. All other links, both internal and external, are created with the \goto command, leading to shorter, slightly more idiomatic code. As before, autolinks can still be styled via \setupurl, other links via \setupinteraction.
- Use "sectionlevel" environment for headings (Albert Krewinkel, #5539). The document hierarchy is now conveyed using the \startsectionlevel/\stopsectionlevel by default. This makes it easy to include pandoc-generated snippets in documents at arbitrary levels. The more semantic environments "chapter", "section", "subsection", etc. are used if the --top-level-division command line parameter is set to a non-default value.
Docx writer:
- Add w:lang to rPr for Span and Div with lang attribute, so that Word can know that "Apfel" is not a spelling error (#8026).
- Prevent crashing when handling invalid tables (Albert Krewinkel, #8102). Tables with different numbers of cells per row would sometimes crash pandoc. This fix prevents this by cutting off overlong rows.
ICML writer:
- Support custom-style attribute on Table (#8079).
AsciiDoc writer:
- Fix commas in link text (#8070). Commas in link text trigger interpretation of attributes. To block this, we replace them with numeric entities.
- Fix underline. We were rendering it as +++text+++; this is now changed to [.underline]#text#. See comment at https://github.com/jgm/pandoc/issues/8070#issuecomment-1126883824.
FB2 writer:
- Fix handling of non-section Divs (#8123).
Markdown writer:
- Disable soft wrapping when hard_line_breaks enabled (#8035). We were already doing this for markdown; this commit does the same thing for markua and commonmark and gfm.
- Avoid excessive indentation on bullet lists for commonmark, markua, gfm. They are now nested by 2 spaces instead of 4 (#8011).
Text.Pandoc.Class:
- Add new function findFileWithDataFallback [API Change] (Albert Krewinkel).
- fillMediaBag: Keep attributes of original image on Span (Albert Krewinkel, #8099). Images that cannot be fetched are replaced with a Span that contains the image's description. The span now also retains all original image attributes and inherits all attributes of the image. Furthermore, the classes image and placeholder are added, and path and title are store in attributes original-image-src and original-image-title, respectively.
Text.Pandoc.Shared:
- makeSections: don't make a section for a div with class "fragments" (#8098).
- Ensure that Nulls are ignored by makeSection and in segmenting slides (#8155).
- Add formatCode function to Text.Pandoc.Shared [API change] (Elliot Bobrow, #8129).
- taskListItemToAscii: handle asciidoctor's characters (#8011). Asciidoctor uses different unicode characters for task lists; we should recognize them too and be able to convert them to ascii task lists in formats like gfm.
- Deprecate deLink and mark for later removal.
Text.Pandoc.Writers.Shared:
- toTableOfContents: Don't replace links with empty spans in TOC (#8020).
Text.Pandoc.Readers.Metadata:
- Ensure that metadata values w/o trailing newlines are parsed as inlines, as the manual states. Previously, they were parsed as inlines if they would otherwise have been a single Plain or Para, but otherwise left unchanged. This led to some quirky results (e.g. #8143). We now use the general function blocksToInlines from T.P.Shared.
Text.Pandoc.Parsing:
- Simplify gridTableWith', gridTableWith [API Change] (Albert Krewinkel). The functions gridTableWith and gridTableWith' no longer takes a boolean argument that toggles whether a table head should be parsed: both, tables with heads and without heads, are always accepted now.
Lua subsystem (Albert Krewinkel):
- Extend pandoc.system module (Albert Krewinkel, #8184). The module now has the additional functions list_directory, make_directory, and remove_directory. This makes it easier to write cross-platform scripts that need to inspect or modify the file system.
- Require pandoc-lua-marshal 0.1.7. Adds a clone methods to Pandoc objects and allows to pass Blocks in instead of full Caption elements.
- Add fields pandoc.readers and pandoc.writers (#8177). The set of supported input and output formats is made available to Lua users.
- Ensure that tables marshaled via JSON arrays behave like Lists. This allows to invoke methods like map and includes on lists like PANDOC_WRITER_OPTIONS.extensions.
- Require hslua-2.2.1, unless lua53 flag is set, and do not reset foreign encoding before running Lua. This fixes a problem where the encoding used for Lua filenames would sometimes mismatch the encoding used by the OS.
- Simplify module loading code. Modules are now loaded directly; the special pandoc Lua package searcher is no longer necessary and has been removed.
- Add function pandoc.mediabag.fill (#8104). The function allows to fill the mediabag with all images in a given document. Images that cannot be fetched are replaced with a Span containing the image description.
Populate mediabag after filters have run (Albert Krewinkel, #8099). The mediabag is filled with document resources after the filters have run. This allows, for example, filter authors to modify image paths before pandoc tries to fetch the images. Lua filters that rely on a filled mediabag can use the new pandoc.mediabag.fill function to perform that action in the filter.
Ms template: redefine rather than removing .CH macro (#8175).
JATS template (Albert Krewinkel, except as noted):
- Include particles, prefix, suffix in names.
- Mark authors with cor-id as corresponding authors. Corresponding authors are marked by setting the attribute corresp="yes" in their respective <contrib> element.
- Unconditionally include permissions element (#8040). Fixes a bug that caused license information to be omitted when no copyright information was provided.
- Follow JATS4R recommendation and PudMed Central for license URI (Castedo Ellerman, #8041).
LaTeX template:
- Rename \textormath to \TextOrMath (Hos Es, #8036).
- Fix links-as-notes (Albert Krewinkel, #8077).
HTML template styles:
- Remove span.underline rule. This is superfluous now that we render Underline as <u>.
- Improve CSS for task lists (#8151).
LaTeX template: Add boxlinks variable for LaTeX/PDF output (#8198). If boxlinks is set but colorlinks is not, then boxes will be printed around links (hidelinks will not be set in hypersetup).
--self-contained: Handle url() in <style> elements (#8193).
Text.Pandoc.PDF: use SHA1 hash of filename when converting SVG. The previous code threw away the directory component of the filename in constructing a new one. This led to surprising results if you had e.g. foo/pic.svg and bar/pic.svg; in the final PDF they'd be the same image, because the latter would overwrite the former in the temp directory.
Remove Muse reader round-trip tests. These are nondeterministic and have repeatedly failed on strange edge cases.
Update fonts MIME following IANA recommendation (Gabriel Lewertowski, #8127).
Future compat change for liftA2 export from Prelude (Georgi Lyubenov, #8132).
Update default.csl from the latest chicago-author-date.csl.
Update manfilter.hs for greater portability (#8045). The tables in our man pages were not rendering correctly with mandoc, now used by default with macOS. mandoc doesn't allow man formatting inside table cells. For maximum portability, we now render the tables in plain format and include them as code blocks in the man page.
CI: update macos container version (#8197, Sukka).
Add nightly flag. This causes a -nightly-COMPILEDATE suffix to be added the the output of --version (#8016). This is used in the nightly CI builds.
Update dependencies (aeson, skylighting, pandoc-lua-marshall, citeproc, texmath).
Documentation improvements (thanks to Jiří Wolker, Castedo Ellerman, Albert Krewinkel, Bastien Dumont, Cezar Drożak, Benjamin Wuethrich, Ivan Panchenko, Sukil Etxenike, Masataka Ogawa).

pandoc 2.18 (2022-04-04)

New input formats: endnotexml (EndNote XML bibliography), ris (RIS bibliography).
A RIS bibliography file may now be used with --citeproc.
Citeproc: Allow a formatted bibliography to be placed in metadata fields via a Div with class refs (#7969, #526). Thus, one can include a metadata field, say refs, whose content is an empty div with id refs, and the formatted bibliography will be put into this metadata field. It may then be interpolated into a template using the variable refs.
Ensure that you don't get PDF output to terminal. -t pdf now behaves like -t docx and gives an error unless the output is redirected.
--version now prints hslua version (#7929) and Lua version (#7997, Albert Krewinkel).
Change --metadata-file parsing so that, when the input format is not markdown or a markdown variant, pandoc's markdown is used (#6832, #7926). When the input format is a markdown variant, the same format is used. Reason for the change: it doesn't make sense to run the markdown parser with a set of extensions designed for a non-markdown format, and this dramatically limits what people can do in metadata files.
Trim whitespace from math in --webtex (#7892). This fixes problems with --webtex and markdown output, when display math starts or ends with a newline.
--self-contained: issue warning rather than failing with an error if a resource can't be found (#7904).
New exported module Text.Pandoc.Readers.EndNote, exporting readEndNoteXML and readEndNoteXMLCitation [API change].
New exported module, Text.Pandoc.Readers.RIS, exporting readRIS (#7894) [API change].
LaTeX reader:
- Handle subequations as inline math environment (#7883).
- Rudimentary support for vbox (#7939).
- Support \today (#7905).
- Handle \label and \ref for footnotes (#7930).
- Allow inline groups starting with \bgroup (#7953).
- Use custom TokStream that keeps track of whether macros are expanded. This allows us to improve performance a bit by avoiding unnecessary runs of the macro expansion code (e.g. from 24 ms to 20 ms on our standard benchmark).
- Further optimizations for inline parsing.
- Better handling of \usepackage. If the package is local but causes parse errors, parse everything up to the error and skip the rest. Issue a CouldNotParseIncludeFile warning indicating that parsing failed at that point.
- Text.Pandoc.Readers.LaTeX.Parsing: Monoid and Semigroup instances for TokStream.
HTML reader:
- Give warnings and emit empty note when parsing <a epub:type="noteref"> and the identifier doesn't correspond to anything in the note table (#7884). Previously we just silently skipped these cases.
- Fix parsing of epub footnotes (#7884).
DocBook reader:
- Handle complete set of entities as specified at https://www.w3.org/2003/entities/2007doc/byalpha.html (#7938).
- Handle abstract in info section (#7747).
- Improve info parsing.
- Simplify metadata parsing code (#7747). Handle abstract as block-level content. Report skipped info elements with --verbose.
- Handle address and coyright in metadata (#7747).
DokuWiki reader:
- Add DokuWiki table alignment (#5202, damon-sava-stanley).
RST reader:
- Fix treatment of headerless simple tables (#7902).
- Wrap math in Span to preserve attributes (#7998, Albert Krewinkel). Math elements with a name, classes, or other fields are wrapped in a Span with these attributes.
JATS reader:
- Improve handling of fn-group elements (#6348, Albert Krewinkel). Footnotes in <fn-group> elements are collected and re-inserted into the document as proper footnotes in the place where they are referenced.
- Handle pub-date (#8000).
- Support PMID, DOI, issue in citations (#7995).
- Improve refs parsing. Handle issn and isbn; use simpler form for issued date.
- Strip 'ref-' from ref id in constructing CSL id. This allows better round-tripping, because the JATS writer adds the ref- prefix to the citation id to get the ref element's id.
Org reader:
- Allow ":" in property drawer keys (Lucas V. R). Any non-space character is allowed as property drawer key, including ":" itself (so it is not really a delimiter). The real delimiter is a space character, so in a drawer like
```
:PROPERTIES:
::k:ey:: value
:END:
```
  ":k:ey:" is a key with value "value".
- Allow comments above property drawer.
- More flexible LaTeX environments (Lucas V. R).
- Handle #+bibliography: as metadata so that it can work with --citeproc.
- Parse #+print_bibliography: as Div with id refs.
- Allow multiple #+bibliography:.
Markdown reader:
- Allow one-column pipe tables with pipe on right (#7919).
- Remove restriction on identifiers, so they no longer need to begin with a letter (#7920).
Docx reader:
- Enable citations extension for docx reader (#7840). When enabled, Zotero, Mendeley, and EndNote citations embedded in a docx are parsed as native pandoc citations. (When disabled, the generated citation text and bibliography are passed through as regular text.) The bibliography generated by the plugin is suppressed. Instead, bibliographic data embedded in citation items is added to the references metadata field so that it can be used with --citeproc.
Docbook writer:
- Interpret links without contents as cross-references (#7360, Jan Tojnar). Links without text contents are converted to <xref> elements. DocBook processors will generate appropriate cross-reference text when presented with an xref element.
Docx writer:
- Single numbering ID for examples (#7895, mjfs). This change ensures that example list items all belong to a single number sequence, so that if items are added or deleted in a word processor, the other items will renumber automatically.
- Add bookmark with table id to table (#7989, Nikolai Korobeinikov, #7285). This allows tables with ids to be linked to.
Ipynb writer:
- Handle metadata better (#7928). Previously we used the markdown writer to render metadata. This had some undesirable consequences (e.g. en dash expanded to -- when smart enabled), so now we use the plain writer.
LaTeX writer:
- Avoid extra space before \CSLRightInline (#7932).
- Add scrreport to chaptersClasses (#6168, ivardb).
- Support page,trim,clip attributes on images (#7181).
- Add () after booktabs rules (#8001). These commands take optional arguments with () and [], which can lead to problems if the content of the table cell begins with these characters.
RST writer:
- Support all standard metadata ("bibliographic") fields.
HTML writer: performance improvements.
Org writer:
- Stop indenting property drawers, quote blocks (#3245, Albert Krewinkel). This follows the current default org-mode behavior.
Markdown writer:
- Move table-related code into submodule (Albert Krewinkel).
- Don't produce redundant header identifier when the gfm_auto_identifiers extension is set (#7941).
- Update escaping rules for \. We now escape \ only if raw_tex is enabled or it is followed by a non-alphanumeric.
JATS writer:
- Encode author "others" as <etal/> (Albert Krewinkel). Citeproc adopted the BibTeX convention to use the author name "others" when there are additional authors that are not named. JATS uses the <etal> element for this.
- Avoid doubled ref-list element (#7990). Previously when generating JATS with the element_citations extension enabled, the references were put in a doubly-nested ref-list element (<ref-list><ref-list>...).
- Keep edition info in element citations (#7993, Albert Krewinkel).
- Fix handling of CSL variable 'page' (not 'pages' as we had before). It should go to 'lpage' and 'rpage', not 'page-range'.
EPUB writer: refactor for clarity (#7991, Jonathan Dönszelmann, Ola Wolska, Ivar de Bruin, Jaap de Jong).
Custom writer (Albert Krewinkel):
- Support new-style Writer function (Albert Krewinkel). See the documentation for custom writers for details.
- Produce stacktrace if Writer function fails
Text.Pandoc.Logging: add CouldNotParseIncludeFile constructor for LogMessage [API change].
Text.Pandoc.Shared:
- Put id attributes on TOC entries (#7907, damon-sava-stanley). Naming scheme of id is "toc-" + id of linked to header/section. Effects HTML, Markdown, Powerpoint, and RTF.
- Define ordNub as alias for nubOrd from containers package (#7963, Albert Krewinkel).
- Export ensureValidXmlIdentifiers. This function changes identifiers that don't start with letters, and internal links to these identifiers, making them compatible with XML standards. The change is simple: we add id_ to the front. There is potential for duplication if there are already id_... identifiers defined, but this seems rare enough not to worry too much about.
Ensure that valid XML identifiers are used in Docbook, EPUB, FB2, HTML4, S5, Slidy, Slideous, ICML, ODT, TEI writers. Thus, if you convert [anchor]{#1} and [link to](#1), id_1 will be used instead of 1 for the identifier.
Lua (Albert Krewinkel).
- Add module pandoc.layout to format and layout text.
- Move custom writer code into Lua hierarchy.
- Use pandoc-lua-marshal 0.1.5.
- Allow any type of callable object as argument to List functions filter, map, and find_if. These previously required the argument to be of type function, which was too restrictive.
- Inline: the type of Image captions is now Inlines instead of List.
- Allow passing Sources to pandoc.read (#8002).
Text.Pandoc.PDF:
- Restore wkhtmltopdf as default pdf engine for HTML (Albert Krewinkel).
- Allow custom writer as format if engine is explicitly specified (#7898, Albert Krewinkel). Note that it may be necessary to explicitly specify a template on the command line.
Text.Pandoc.MediaBag: improve detection of absolute paths (#7881).
Text.Pandoc.Extensions:
- Remove raw_tex extension from list of commonmark extensions, and from the commonmark_x defaults. commonmark doesn't parse raw TeX, and it doesn't make sense to write it if we don't parse it.
- Remove native_divs from allowed gfm extensions (#7965). This allows <div> to be suppressed using -raw_html. Previously native_divs was enabled but could not be suppressed, because it was not in the list of available extensions for commonmark-based formats.
Text.Pandoc.Parsing:
- Partition module into (internal) submodules (#7962, Albert Krewinkel).
- Unify grid table parsing (#7971, Albert Krewinkel). Grid table parsing in Markdown and RST are updated use the same functions. Functions are generalized to meet requirements for both formats. This change also lays the ground for further generalizations in table parsers, including support for advanced table features. [API change] in Text.Pandoc.Parsing:
  - Parse results of functions tableWith' and gridTableWith' are now a mf TableComponents instead of a quadruple of alignments, column widths, header rows and body rows.
  - Additional exports from Text.Pandoc.Parsing: tableWith', TableComponents, TableNormalization, toTableComponents, toTableComponents'.
Text.Pandoc.XML.Light: add versions of the parsers that allow specifying a custom entity map. Exports new functions: parseXMLElementWithEntities, parseXMLContentsWithEntities [API change].
Text.Pandoc.Writers.GridTable: improve module documentation (Albert Krewinkel).
Text.Pandoc.Parsing.GridTable: simplify column handling code (Albert Krewinkel).
Text.Pandoc.MIME: Add mime type for mkv extension (#7181).
Text.Pandoc.Asciify: Fix regression with ascii_identifiers and Turkish undotted i (#8003).
Relax upper bound for hslua, allow hslua-2.2. (#7929) Lua 5.4 is used by default after this is merged. Packagers may still include Lua 5.3 instead by building pandoc with --constraint='hslua <2.2'. Differences between 5.3 and 5.4 should not generally affect pandoc Lua filters. See list of incompatible changes here: https://www.lua.org/manual/5.4/manual.html#8.1
JATS template: allow multiple licenses (Albert Krewinkel).
LaTeX template:
- Skip \babelprovide if babel-lang is empty (#7945) to avoid an error.
- Move hyperref near end of preamble (#5811). It now comes after header-includes and right before title, author, date, abstract. Note: Users who presuppose hyperref in their header-includes will now have to add \usepackage{hyperref} to their header-includes to make it available there. (The redundant \usepackage will do no harm in this case.)
- Remove special redefinition of \sout. This used to be necessary to avoid problems with hyperref, when headings contain strikeout text, but it does not seem to be necessary any more (tested).
Tests: improve location reporting of failing tests (Albert Krewinkel).
Add tests for idempotency of makeSections (#7950).
Add armhf support in linux build script (#7944, Tony).
Use latest pandoc-types, so that toJSONFilter will work with Meta and MetaValue.
Use latest doclayout, texmath, commonmark, citeproc.
INSTALL.md: add reference to install via winget (#7951, Guriy Samarin).
MANUAL.txt:
- Document way to get list in block quote in slide shows (#7916).
- Minor changes to security section.
- Note that smart works for html input.
- Fix typos (#7934, Dimitris Apostolou).
- Fix documentation for citations and org mode.
- Remove claim that --self-contained does not work with --mathjax (#682).
doc/org.md: remove obsolete citations section. This mostly described citation formats we no longer support.
doc/lua-filters.md: Fix typo (#7981, Mario Lang).
Makefile: Use cabal for default build
Add lua53 cabal flag. It is false by default. If set to true, compile with hslua 2.1 and Lua 5.3, otherwise hslua 2.2 and Lua 5.4.

pandoc 2.17.1.1 (2022-01-31)

Fix regression in 2.17.1 which caused problems finding default files in the default user data directory. (Reverts the item "logic bug in fullDefaultsPath", which was misguided.)
Sample custom writer: use single quotes for strings (#7487, Albert Krewinkel).

pandoc 2.17.1 (2022-01-30)

Support pagedjs-cli as pdf engine (#7838, Albert Krewinkel). PagedJS is a polyfill and supports the Paged Media standards by the W3C. https://www.pagedjs.org/
CommonMark reader: fix source position after YAML metadata (#7863).
LaTeX reader:
- Remove retokenizing in rawLaTeXParser.
- Ensure that \raggedright doesn't gobble an argument (#7757).
- Improve descItem. For some reason we were skipping arbitrary blocks before \item. This is now changed to "skip whitespace and comments."
- Improve handling of \newif. Adding a pair of braces around the second argument of \def prevents LaTeX from an emergency stop on input like the following (#6096).
```
\newif\ifepub
\epubtrue
\ifepub
hi
\fi
```
Docx reader: Parse both Zotero citation and bibliography as FieldInfo (#7840).
LaTeX writer:
- Allow arbitrary frameoptions to be passed to a beamer frame, using the frameoptions attribute (#7869).
- Add s and squeeze to recognized beamer frameoptions (#7869).
Markdown writer: handle explicit column widths with pipe tables (#7847). If a table has explicit column width information and the content extends beyond the --columns width, we need to adjust the widths of the pipe separators to encode this width information.
Docx writer: Separate tables even with RawBlocks between (#7724, Michael Hoffmann). Adjacent docx tables need to be separated by an empty paragraph. If there's a RawBlock between tables which renders to nothing, be sure to still insert the empty paragraph so that they will not collapse together.
Man writer: use custom font V for inline code (#7506). The V font is defined conditionally, so that it renders like CB in output formats that support that, and like B in those that don't (e.g. the terminal). Aliases also defined for VI, VB, VBI.
Asciidoc writer: Support checklists in asciidoctor writer (#7832, Nikolai Korobeinikov, ricnorr). The checklist syntax (similar to task_list in markdown) seems to be an asciidoctor-only addition.
HTML writer:
- Avoid duplicate "style" attributes on table cells (#7871).
- Don't break lines inside code elements. With the new (default) line wrapping of HTML, in conjunction with the default CSS which includes code { whitespace: pre-wrap; }, spurious line breaks could be introduced into inline code (#7858).
Custom writer: preserve order of element attributes (#7489, Albert Krewinkel). Attribute key-value pairs are marshaled as AttributeList, i.e., as a userdata type that behaves both like a list and a map. This allows to preserve the order of key-value pairs.
Switch to hslua-2.1 (Albert Krewinkel). This allows for some code simplification and improves stability.
Don't read files outside of user data directory (Even Brenden). If a file path does not exist relative to the working directory, and it does exist relative to the user data directory, but outside of of the user data directory, do not read it. This applies to readDataFile and readMetadataFile in PandocMonad and, by extension, any module that uses these by passing them relative paths.
Text.Pandoc.Class.makeCanonical: Correctly handle consecutive ".."s at the beginning of a path (Even Brenden). Prior to this commit, ../../file would evaluate to file, when it should be unchanged.
Search for metadata files in $DATADIR/metadata (#7851, Even Brenden). If files specified with --metadata-file are not found in the working directory, look in $DATADIR/metadata (#5876).
Text.Pandoc.Class: export readMetadataFile [API change] (#5876).
Text.Pandoc.Error: export new PandocCouldNotFindMetadataFileError constructor for PandocError [API change] (#5876).
Avoid putting a frame around speaker notes in beamer (#7857). If speaker notes (a Div with class 'notes') occur right after a section heading, but above slide level, the resulting \note{..} caommand should not be wrapped in a frame, as that will cause a spurious blank slide.
CSS in HTML template: adjust #TOC and h1 on mobile (#7835, Mauro Bieg).
Text.Pandoc.Readers.LaTeX.Parsing: don't export totoks. Make the first param of tokenize a SourcePos instead of SourceName, and use it instead of totoks.
Text.Pandoc.Shared: Modify stringify so it ignores [Citation] inside Cite (#7855). Otherwise we'll sometimes get two copies of things, one from the citationPrefix or citationSuffix and another from the embedded fallback text. When there is no fallback text, we'll get no content. However, it really isn't an alternative to just rely on the result of running query on the embedded Citations; this will result in a jumble of text rather than anything structured.
Omit --enable-doc in the cabal haddock invocation in tools/build-and-upload-api-docs.sh.
Text.Pandoc.App.Opt: fix logic bug in fullDefaultsPath. Previously we would (also) search the default user data directory for a defaults file, even if a different user data directory was specified using --data-dir. This was a mistake; if --data-dir is used, the default user data directory should not be searched.
Text.Pandoc.Shared: defaultUserDataDir behavior change (#7842). If the XDG data directory is not defined (e.g. because it's not supported in the OS or HOME isn't defined), we return the empty string instead of raising an exception.
Update command tests to distinguish stderr and test exit status.
MANUAL: add that speaker notes can be used with beamer (#7856).
Update build-and-upload-api-docs.sh.
Document --trace option. Document no-check-certificate in defaults files. Document 'sandbox' option for defaults files. (#7873).
Fix pattern syntax in sample readability custom reader.
doc/custom-readers.lua: add example for "readable HTML."
Fix message in man page about where code can be found.
manfilter.lua: remove extra indent in table cells with code blocks.
Fix lua-filters documentation for table column widths (#7864).
epub.doc: Update links to KindleGen (#7846, Benson Muite, Mauro Bieg). KindleGen has been deprecated and we need to link to archived versions.
Use tables in defaults files documentation, so each default option is paired with the corresponding command-line option (Carsten Allefeld).
Use skylighting 0.12.2.
Add pandoc-lua-marshal to Nix shell (#7849, Even Brenden).

pandoc 2.17.0.1 (2022-01-14)

Require pandoc-lua-marshal 0.1.3.1 (#7831, Albert Krewinkel). Fixes a problem with List.includes and List.find that caused a Lua stackoverflow and subsequent program crash.
HTML template: load header-includes before math (#7833, Kolen Cheung). MathJax expect the config comes before loading the MathJax script. This change of order allows one to config MathJax via header-includes, which loads before the MathJax script. Cf. #2750.
When reading defaults file, stop at a line .... This line signals the end of a YAML document. This restores the behavior we got with HsYaml. yaml complains about content past this line. See https://github.com/jgm/pandoc/issues/4627#issuecomment-1012438765
Text.Pandoc.Citeproc: allow notes-after-punctuation to work with numerical styles that use superscripts (e.g. american-medical-association.csl), as well as with note styles. The default setting of notes-after-punctuation is true for note styles and false otherwise. This restores a behavior of pandoc-citeproc that wasn't properly carried over to Citeproc (#7826, cf. jgm/pandoc-citeproc#384).
Use commonmark-pandoc 0.2.1.2 (#7769).
Add FAQ on images in ipynb containers (#7749, Kolen Cheung).

pandoc 2.17 (2022-01-12)

Support markua as an output format (#1871, Tim Wisotzki and Saumel Lemmenmeier). Markua is a markdown variant used by Leanpub.
Add text wrapping for HTML output (#7764). Previously the HTML writer was exceptional in not being sensitive to the --wrap option. With this change --wrap now works for HTML. The default (as with other formats) is automatic wrapping. Note that the contents of script, textarea, and pre tags are always laid out with the flush combinator, so that unwanted spaces won't be introduced if these occur in an indented context in a template.
Don't read sources until in/out format are verified (#7797).
Issue error with --list-extensions for invalid formats (#7797).
Make --citeproc recognize .yml as well as .yaml extensions as YAML bibliography files (#7707, Jörn Krenzer).
Use latest version of KaTeX with --katex.
Fix parsing of footnotes in --metadata-file (#7813). Previously non-inline footnotes were not being parsed.
ODT reader:
- Parse list-header as a list item (Tuong Nguyen Manh).
Commonmark reader:
- Put sourcepos attribute on header, not enclosing div with -f commonmark+sourcepos (#7769).
Markdown reader:
- Don't allow ^ at beginning of link or image label (#7723). This is reserved for footnotes. Fixes regression from 0a93acf.
- Fix parsing of "bare locators" after author-in-text citations. Previously @item [p. 12; @item2] was incorrectly parsed as three citations rather than two. This is now fixed by ensuring that prefix doesn't gobble any semicolons.
- Revert changes to inlinesInBalancedBrackets (commit fa83246), which caused regressions.
- Improve detection of pipe table line widths (#7713). Fixed calculation of maximum column widths in pipe tables. It is now based on the length of the markdown line, rather than a "stringified" version of the parsed line. This should be more predictable for users. In addition, we take into account double-wide characters such as emojis.
Custom (Lua) readers:
- First argument is now a list of sources instead of the concatenated text (Albert Krewinkel). The list structure can easily be converted to a string by applying tostring, but it is also possible to access the elements (each with a text and name). A small example is added to the custom reader documentation, showcasing its use in a reader that creates a syntax-highlighted code block for each source code file passed as input. Existing readers will still work through a fallback mechanism, issuing a deprecation notice.
Org reader:
- Parse official org-cite citations (#7329). We also support the older org-ref style as a fallback. We no longer support the "markdown style" or "Berkeley style" citations.
- Support alphabetical (fancy) lists (Lucas Viana). When the fancy_lists extension is enabled, alphabetical list markers are allowed, mimicking the behaviour of Org Mode when org-list-allow-alphabetical is enabled.
- Support counter cookies in lists (Lucas Viana). Such cookies are used to override the item counter in ordered lists. In org it is possible to set the counter at any list item, but since Pandoc AST does not support this, we restrict the usage to setting an offset for the entire ordered list, by using the cookie in the first list item.
- Allow trailing spaces after key/value pairs in directives (Albert Krewinkel). Ensures that spaces at the end of attribute directives like #+ATTR_HTML: :width 100% (note the trailing spaces) are accepted.
LaTeX reader:
- Omit visible content for \label{...}. Previously we included the text of the label in square brackets, but this is undesirable in many cases. See discussion in https://github.com/jgm/pandoc/issues/813#issuecomment-978232426.
- Improve references (#813). Resolve references to theorem environments. Remove the Span caused by "label" in figure, table, and theorem environments; this had an id that duplicated the environments' id.
- Fix semantics of \ref. We were including the ams environment type in addition to the number. This is proper behavior for \cref but not for \ref. To support \cref we need to store the environment label separately.
- Add babel mappings for Guajati (gu) and Oriya (or) (#7815).
- Fix typo panjabi -> punjabi in babel mappings (#7814).
HTML reader:
- Parse attributes on links and images (#6970).
Docx reader:
- Handle multiple pic elements inside a drawing (#7786).
- Change elemToParPart to return [ParPart] instead of ParPart. Also remove NullParPart constructor, as it is no longer needed. This will allow us to handle elements that contain multiple ParParts, e.g. w:drawing elements with multiple pic:pic.
DocBook reader:
- Collapse internal spaces in literal and other similar tags (#7821), as the standard docbook toolchain does.
- Be sensitive to spacing="compact" in lists (#7799). When spacing="compact" is set, Para elements are turned into Plain, so we get a "tight" list.
Markdown writer:
- Add new exported function writeMarkua from Text.Pandoc.Writers.Markdown [API change] (#1871, Tim Wisotzki and Saumel Lemmenmeier).
- Fix indentation issue in footnotes (#7801).
- Avoid extra space before citation suffix if it already starts with a space.
- Ensure semicolon between the locator and the next citation when an author-in-text citation has a locator and following citations.
- Improve escaping for # (#7726).
Custom (Lua) writers:
- Allow variables to be set via second return value of Doc (#6731, Albert Krewinkel). New templates variables can be added by giving variable-value pairs as a second return value of the global function Doc. Example:
```
function Doc (body, meta, vars)
  vars.date = vars.date or os.date '%B %e, %Y'
  return body, vars
end
```
- Provide global PANDOC_WRITER_OPTIONS (#6731, Albert Krewinkel).
- Assign default Pandoc object to global PANDOC_DOCUMENT (Albert Krewinkel). The default Pandoc object is now non-strict, i.e., only the parts of the document that are accessed will be marshaled to Lua. A special type is no longer necessary. This change also makes it possible to use the global variable with library functions such as pandoc.utils.references, or to inspect the document contents with walk().
LaTeX writer:
- Fix typo panjabi -> punjabi in babel mappings (#7814).
MediaWiki writer:
- Remove redundant display text for wiki links (Jesse Hathaway).
Docx writer:
- Handle bullets correctly in lists by not reusing numIds (#7689, Michael Hoffmann). This fixes a bug in which a Div in a list item would receive bullets on its contained paragraphs.
Org writer:
- Fix list items starting with a code block or other non-paragraph content (#7810).
- Avoid blank lines after tight sublists (#7810).
- Fix extra blank line inserted after empty list item (#7810).
- Don't add blank line before lists (#7810).
- Support starting number cookies (Lucas Viana). This is necessary for lists that start at a number other than 1.
- Support the new org-cite syntax (#7329).
Haddock writer:
- Avoid blank lines after tight sublists (#7810).
Ipynb writer:
- Ensure deterministic order of keys.
- Handle cell output with raw block of markdown (#7563, Kolen Cheung). Write RawBlock of markdown in code-cell output. This is designed to fit the behavior of #7561, which makes the ipynb reader parse code-cell output with mime "text/markdown" to a RawBlock of markdown. This commit makes the ipynb writer writes this RawBlock of markdown back inside a code-cell output with the same mime, preserving this information in round-trip.
- In choosing between multiple output options, always favor those marked with the output format over images (Kolen Cheung). Previously, both fmt == f case and Image have a rank of 1.
Ipynb reader & writer: properly handle cell "id" (#7728). This is passed through if it exists (in Nb4); otherwise the writer will add a random one so that all cells have an "id".
Ms writer:
- Properly encode strings for PDF contents (#7731).
JATS writer:
- Keep quotes in element-citations (Albert Krewinkel). Fixed a bug that lead to quote characters being lost in element-citations.
RTF writer:
- Properly handle images in data URIs (#7771).
Commonmark writer:
- Allow ')' delimiters on ordered lists.
RST writer:
- Avoid extra blank line after empty list item (#7810).
HTML writer:
- Make line breaks more consistent. With --wrap=none, we now output line breaks between block-level elements. Previously they were omitted entirely, so the whole document was on one line, unless there were literal line breaks in pre sections. This makes the HTML writer's behavior more consistent with that of other writers. Also, regardless of wrap settings, put newline after <dd> and after block-level elements in the footnotes section. And add a line break between an img tag and the associated figcaption.
- reveal.js: Make sure images with r-stretch are not in p tags. They must be direct children of the section. There was previously code to make this work with the older class name stretch, but the name has changed in reveal.js.
- reveal.js: don't add r-fit-text class to section. It must go on the header only.
AsciiDoc writer:
- Improve detection of intraword emphasis (#7803).
OpenDocument writer:
- Fix vertical alignment bug with display math (#7777). Previously some displayed formulas would be floated above a preceding text line. This is fixed by setting vertical-rel to text rather than paragraph-content.
JATS template (Albert Krewinkel):
- Fix position of contrib affiliations in authoring set. Any <aff> element must come before any <email> element.
- Fix affiliation tagging in articleauthoring output. Affiliations were xlinked even in the articleauthoring tag set, but <aff> are not allowed as children of contrib-group elements in that tag set. Each affiliation must be listed directly in the contrib element.
- Add support for article subtitles.
EPUB template:
- Include abstract in default template.
- Ensure that the essential styles needed by pandoc (styles.html partial) are included in the templates. This is important for correct formatting of CSL bibliographies. Note that much of the styling in styles.html will be ignored for EPUB, because of the conditional on document-css. Setting the document-css variable will cause it not to be ignored.
HTML template: Add abstract (#7588, Jannik Buhr, John MacFarlane). By default, a localized title (the word "Abstract") will be used, unless the variable abstract-title is set.
ConTeXt template: Make title appear in PDF title bar. This is recommended for accessibility reasons. Note: doesn't work with macOS Preview.app.
reference.pptx: change to use 16:9 aspect ratio, Powerpoint's default.
Text.Pandoc.Writers:
- Do not export writeCustom [API change]. This ensures that all writers exported in T.P.Writers are parameterized and work with any PandocMonad type. This is consistent with T.P.Readers, as readCustom is not exported from that module either.
Text.Pandoc.Writers.Shared:
- endsWithPlain now returns True if the list ends with a list that ends with a Plain, and so on recursively (#7810).
Text.Pandoc.Class.IO:
- writeMedia: unescape percent-encoding in creating file path. This addresses a problem with spaces in image filenames when creating PDFs (#7819); it also affects --extract-media.
New internal module Text.Pandoc.Writers.Blaze, exporting layoutMarkup. This converts a blaze Html structure into a doclayout Doc Text.
Text.Pandoc.Extensions:
- parseFormatSpec: cleaner error message for invalid extensions.
Text.Pandoc.MediaBag:
- Fix bug in extractMedia, which caused the test for .. in paths to fail, with the result that images with .. in the path name could be extracted outside of the directory specified by extractMedia. It also led a check for media in resource paths to fail in the docx reader.
Text.Pandoc.Citeproc:
- Avoid adding comma before an author-in-text citation in a note if it begins with a title (no author) (#7761).
- Text.Pandoc.Citeproc.Locator now exports toLocatorMap, LocatorInfo, and LocatorMap. The type of parseLocator has changed, so it now takes a LocatorMap rather than a Locale as parameter, and returns a LocatorInfo instead of a tuple.
- Fix citation locator detection for German. toLocatorMap now stores keys case-folded. We want to do a case-insensitive comparison when parsing locators, so that e.g. both Chap. and chap. work. Previously we case-folded terms when doing the lookup, but they weren't case-folded in the map itself, which led to locator-detection breaking for German (where the terms have uppercase letters).
Lua (Albert Krewinkel):
- Allow single elements as singleton MetaBlocks/MetaInlines. Single elements should always be treated as singleton lists in the Lua subsystem.
- Add pandoc.template module. The module provides a compile function to use strings as templates.
- Add pandoc.WriterOptions constructor.
- Add function pandoc.write.
- Provide global PANDOC_WRITER_OPTIONS (#5221).
- The function Text.Pandoc.Filter.applyFilters now takes a filter environment of type Environment, instead of a ReaderOptions value [API change].
- The Environment type is exported from Text.Pandoc.Filter and allows to combine ReaderOptions and WriterOptions in a single value [API change].
- Global, exported from Text.Pandoc.Lua, has a new type constructor PANDOC_WRITER_OPTIONS [API change].
- Add constructors pandoc.Blocks and pandoc.Inlines. The functions convert their argument into a list of Block and Inline values, respectively. When applied to a string, they split the string into Str elements separated by Space or SoftBreak (#7712).
- Support topdown traversals The traversal order of filters can now be selected by setting the key traverse of the filter to either 'topdown' or 'typewise'; the default remains 'typewise'. Topdown traversals can be cut short by returning false as a second value from the filter function. No child-element of the returned element is processed in that case.
- Marshal ReaderOptions field extensions, track_changes via JSON. Extensions are now available as a list of strings; the track-changes settings are given as the kebab-case representation used in JSON.
- Allow binary (byte string) readers to be used with pandoc.read.
- Use global state when parsing documents in pandoc.read. The function pandoc.read is updated to use the same state that was used while parsing the main input files. This ensures that log messages are preserved and that images embedded in the input are added to the mediabag.
- Cleanup stack in peekReadOptionsTable. A ReaderOptions element was left on top of the stack when the peekReadOptionsTable function was invoked.
- walk methods are added to Pandoc, Block, Inline, Blocks, Inlines values; the methods are similar to pandoc.utils.walk_block and pandoc.utils.walk_inline, but apply to filter to the element's contents.
- Functions of name Doc are no longer accepted as alternatives for Pandoc filter functions. This functionality was undocumented.
- Improve handling of empty caption, body by from_simple_table #7776). Create truly empty table caption and body when these are empty in the simple table.
- Change representation of TableHead, TableFoot, and Row values (#7718). The objects now also follow the principle that element attributes are accessible through the .attr field. Rows in TableHead and TableFoot are available via the .rows field. Row objects have a .cells field, containing the list of table cells.
- Simplify code of pandoc.utils.stringify. Minor behavior change: plain strings nested in tables are now included in the result string.
- Simplify and deprecate function pandoc.utils.equals. The function is no longer required for element comparisons; it is now an alias for the == operator.
- Add function pandoc.utils.references (#7752).
- Add new library function pandoc.utils.type. The function behaves like the default type function from Lua's standard library, but is aware of pandoc userdata types. A typical use-case would be to determine the type of a metadata value.
- Fix return types of blocks_to_inlines, make_sections. Ensures the returned lists have the correct type (Inlines and Blocks, respectively).
- Use more natural representation for Reference values Omit false boolean values, push integers as numbers.
Lua: use package pandoc-lua-marshal (#7719, Albert Krewinkel). The marshaling functions for pandoc's AST are extracted into a separate package. The package comes with a number of changes:
- Pandoc's List module was rewritten in C, and error messages were improved.
- Lists of Block and Inline elements are marshaled using the new list types Blocks and Inlines, respectively. These types currently behave identical to the generic List type, but give better error messages. This also opens up the possibility of adding element-specific methods to these lists in the future.
- Elements of type MetaValue are no longer pushed as values which have .t and .tag properties. This was already true for MetaString and MetaBool values, which are still marshaled as Lua strings and booleans, respectively. Affected values:
  - MetaBlocks values are marshaled as a Blocks list;
  - MetaInlines values are marshaled as a Inlines list;
  - MetaList values are marshaled as a generic pandoc Lists.
  - MetaMap values are marshaled as plain tables and no longer given any metatable.
- Cell values are now marshaled as userdata objects; a constructor function for table cells is provided as pandoc.Cell.
- The test suite for marshaled objects and their constructors has been extended and improved.
- A bug in Citation objects, where setting a citation's suffix modified it's prefix, has been fixed.
- Inlines, Blocks, and List objects now have an __eq metamethod, testing equality by comparing two lists element-wise.
Powerpoint tests: shorten lines by grouping tests (Albert Krewinkel). This makes the test output more pleasant to read in narrow terminal windows.
make check: check for unreleased dependencies.
Add tools/build-and-upload-api-docs.sh.
Update cabal description.
MANUAL.txt: Add section on EPUB styling.
MANUAL.txt: clarify "standard Markdown" as "original Markdown" (#7802, Martin Fischer).
doc/custom-writers.md: use filter to include source of example.
Add an example to doc/custom-readers.md.
Fix typo in custom-readers.md (#7722, Mauro Bieg).
doc/jats.md: add link to JATS documentation (Martin Fischer).
doc/lua-filters.md: many improvements (Albert Krewinkel, John MacFarlane).
Use commonmark-extensions 0.2.3. This allows a bare-word class attribute on fenced divs.
Use ipynb 0.2.
Use citeproc 0.6.0.1.
Use texmath 0.12.4.
Use doctemplates 0.10.0.1.

pandoc 2.16.2 (2021-11-21)

Add interface for custom readers written in Lua (#7669). Users can now do -f myreader.lua and pandoc will treat the script myreader.lua as a custom reader, which parses an input string to a pandoc AST, using the pandoc module defined for Lua filters. A sample custom reader can be found in data/creole.lua. Also see documentation in doc/custom-readers.md.
New module Text.Pandoc.Readers.Custom, exporting readCustom [API change].
Allow plain to be used in raw attribute syntax.
Accept empty --metadata-file (#7675). This was a regression from 2.15 behavior.
Markdown reader: Improve inlinesInBalancedBrackets. This is just a small improvement in terms of performance, but it's simpler and more direct code. Also, we avoid parsing interparagraph spaces in balanced brackets, as the original did.
BibTeX reader: Properly handle commented lines in BibTeX/BibLaTeX (#7668).
RST reader: handle class attribute for for custom roles (#7699, willj-dev). Previously the class attribute was ignored, and the name of the role used as the class.
DocBook reader:
- Add <titleabbr> support (Rowan Rodrik van der Molen).
- Support for <indexterm> (#7607, Rowan Rodrik van der Molen).
LaTeX reader:
- Add rudimentary support for \autoref (#7693).
- Add 'uri' class when parsing \url, for consistency with treatment of autolinks in other formats (#7672).
JATS reader: Capture alt-text in figures (#7703, Aner Lucero).
MediaWiki writer: use HTML spans for anchors when header has id (#7697). We need to generate a span when the header's ID doesn't match the one MediaWiki would generate automatically. Note that MediaWiki's generation scheme is different from pandoc's (it uses uppercase letters, and _ instead of -, for example). This means that in going from markdown to mediawiki, we'll now get spans before almost every heading, unless explicit identifiers are used that correspond to the ones MediaWiki auto-generates. This is uglier output but it's necessary for internal links to work properly.
Markdown writer: don't create autolinks when this loses information (#7692). Previously we sometimes lost attributes when rendering links as autolinks.
Text.Pandoc.Readers.Metadata: allow multiple YAML documents when parsing YAML for yamlBsToRefs. Some people use --- as the end delimiter in YAML bibliography files, which causes the yaml library to emit an error unless we explicitly allow multiple YAML documents (and just consider the first).
JATS writer:
- Ensure figures are wrapped with <p> in list items (Albert Krewinkel). This prevents the generation of invalid output.
- Add URL to element citation entries (Albert Krewinkel). The URL of a reference, if present, is added in tag <uri> to element-citation entries.
HTML writer: Don't create invalid data- attribute for empty attribute key (#7546).
LaTeX writer:
- Babel mappings: use ancientgreek for grc.
- With -t latex-smart, don't generate \ldots from ellipsis (#7674). Instead just use unicode ellipsis.
JATS template: fix equal-contrib attribute (Albert Krewinkel). The standard requires the value to be either yes or no, but is was set to true for authors who contributed equally.
reveal.js template: Add disableLayout variable (Christophe Dervieux).
Text.Pandoc.Error: sort errors in handleError by exit code (Albert Krewinkel).
Text.Pandoc.Writers.Shared: Improve toLegacyTable (#7683, Christian Despres).
Lua subsystem:
- Include lpeg module (#7649, Albert Krewinkel). Compiles the lpeg library (Parsing Expression Grammars For Lua) into the program. Package maintainers may choose to rely on package dependencies to make lpeg available, in which case they can compile the with the constraint lpeg +rely-on-shared-lpeg-library. lpeg and re are always made available in global variables, without the need for a require.
- Set lpeg and re as globals; allow shared lib access via require. The lpeg and re modules are loaded into globals of the respective name, but they are not necessarily registered as loaded packages. This ensures that
  - the built-in library versions are preferred when setting the globals,
  - a shared library is used if pandoc has been compiled without lpeg, and
  - the require mechanism can be used to load the shared library if available, falling back to the internal version if possible and necessary.
- Fix argument order in constructor pandoc.Cite (Albert Krewinkel). This restores the old behavior; argument order had been switched accidentally in pandoc 2.15.
- Add Pushable instance for ReaderOptions (Albert Krewinkel).
- Allow to pass custom reader options to pandoc.read as an optional third argument (#7656, Albert Krewinkel). The object can either be a table or a ReaderOptions value like PANDOC_READER_OPTIONS. Creating new ReaderOptions objects is possible through the new constructor pandoc.ReaderOptions.
- Display Pandoc values using their native Haskell representation (Albert Krewinkel).
- Require latest hslua (2.0.1) (#7661, #7657, Albert Krewinkel). This fixes issues with
  - misleading error messages when a required function parameter is omitted;
  - absent properties still being listed in the output of pairs; and
  - alias accessing leading to errors instead of returning nil, e.g. with (pandoc.Str '').identifier.
- Add missing space in "package not found" message (#7658, Albert Krewinkel).
Update build files (#7696, Fabián Heredia Montiel). Drop old windows 32-bit constraints. Update cabal tested-with field to correspond to ci.yml matrix
Remove unneeded package dependencies from benchmark target.
Require ghc >= 8.6, base >= 4.12. This allows us to get rid of the old custom prelude and some crufty cpp. But the primary reason for this is that conduit has bumped its base lower bound to 4.12, making it impossible for us to support lower base versions.
Require Cabal 2.4. Use wildcards to ensure that all pptx tests are included (#7677).
Update bash_completion.tpl (S.P.H.).
Add data/creole.lua as sample custom reader.
Add doc/custom-readers.md and doc/custom-writers.md.
doc/lua-filters.md: add section on global modules, including lpeg (Albert Krewinkel).
MANUAL.txt: update table of exit codes and corresponding errors (Albert Krewinkel).
Use latest texmath.

pandoc 2.16.1 (2021-11-02)

Docx reader: don't let first line indents trigger block quotes (#7655). This fixes a regression introduced in pandoc 2.15.
Docx writer: use getTimestamp for modification times in reference.docx (#7654). This ensures that when SOURCE_DATE_EPOCH is set, the modification times of files taken from the reference.docx will be set deterministically, allowing for reproducible builds.
Lua subsystem (Albert Krewinkel):
- Load module pandoc.path on startup (#7524). Previously the module always had to be loaded via require 'pandoc.path'.
- Fix typo in SoftBreak constructor.
- Re-add content property to Strikeout elements. Fixes a regression introduced in 2.15.
- Be more forgiving when retrieving the Image caption property. Fixes a regression introduced in 2.15.
- Display Attr values using their native Haskell representation.
- Allow omitting the 2nd parameter in pandoc.Code constructor. Fixes a regression introduced in 2.15 which required users to always specify an Attr value when constructing a Code element.
- Allow to compare, show Citation values. Comparisons of Citation values are performed in Haskell; values are equal if they represent the same Haskell value. Converting a Citation value to a string now yields its native Haskell string representation.
- Restore List behavior of MetaList (#7650). Fixes a regression introduced in 2.16 which had MetaList elements lose the pandoc.List properties.
- Restore content property on Header elements.
- Ensure Block elements have all expected properties.
- Ensure Inline elements have all expected properties.
Allow tasty-bench 0.3.x.

pandoc 2.16 (2021-10-31)

Switch back from HsYAML to yaml for parsing YAML metadata (#6084). HsYAML is around 20 times slower in parsing large YAML bibliographies. In addition, HsYAML is not being actively maintained. This sets us back in our attempts to free ourselves from C dependencies (#4535). But I don't see a good alternative until a faster pure Haskell parser is available. Notes:
- We've removed the FromYAML instances for all types that had them, since this is a HsYAML-specific typeclass [API change]. (The yaml package just uses From/ToJSON instead of having a dedicated From/ToYAML class.)
- Unlike HsYAML (in the configuration we were using), yaml parses 'Y', 'N', 'Yes', 'No', 'On', 'Off' as boolean values. Users may need to quote these when they are meant to be interpreted as strings. Similarly, 'null' is parsed as a YAML null value (and will be treated as an empty string by pandoc rather than the string 'null'). Quoting it will force it to be interpreted as a string.
- Some tests had to be adjusted accordingly.
- Pandoc now behaves in a more useful way when the YAML metadata contains escaping errors: instead of just failng silently and falling back to some other interpretation of the section, it raises a YAML parsing error.
Markdown writer: Ensure that special values are quoted in YAML metadata. These include "Y", "yes", "on", and "off", which are now (with yaml library) considered boolean values, as well as "null".
Change JSON encodings of some types.
- For LineEnding use lowercase constructors, e.g. crlf, native.
- For HTMLSlideVariant use lowercase constructors.
- For ReaderOptions use e.g. default-image-extension instead of readerDefaultImageExtension for field names.
- For Extension, use e.g. tex_math_dollars instead of Ext_tex_math_dollars as constructor.
- For Extensions, use an array of Extensions, instead of an object wrapping the tag Extensions and an integer. (The integer representation is not supposed to be part of the public API.)
- For Opt, use field names like tab-stop instead of optTabStop.
Docx writer:
- Add IDs to native_numbering test (Tristan Stenner).
- Move ": " out of the caption bookmark (Tristan Stenner). This is needed so that native references to the figure are included as "As seen in Figure X, it is..." instead of "As seen in [Figure: X, it is..."
Lua (Albert Krewinkel, except as noted):
- Use hslua module abstraction where possible.
- Fix placement of tests for Block elements in pandoc module tests
- Increase strictness when getting attribute keys
- Re-add t and tag property to Attr values. Removal of these properties from Attr values was a regression.
- Fix pandoc.utils.stringify regression. The pandoc.utils.stringify function returned empty strings when called with a string argument.
- Fix a copy/paste bug in Lua marshalling code (John MacFarlane, #7639). This caused links to be changed to figures when Lua filters changed link properties.
- Re-add content property to Link elements (#7647). This was a regression introduced in version 2.15.
- Generate constants in module pandoc programmatically.
- Marshal SimpleTable, ListAttributes, Citation, and Block values as userdata objects. Properties of Block values are marshalled lazily, which generally improves performance considerably. Script users may also notice the following differences:
  - Block element properties can no longer be accessed by numerical indexing of the .c field. The .c property now serves as an alias for .content, so some filter that used this undocumented method for property access may continue to work, while others will need to be updated and use proper property names.
  - The marshalled Block elements now have a show method, and a __tostring metamethod. Both return the Haskell string representation of the element.
  - Block values now have the Lua type userdata instead of table.
Add a short guide to pandoc's sources (Albert Krewinkel).
Fix epub files in epub reader tests, so that they are valid according to epubcheck (#7586).
Allow time 1.13.
Require latest skylighting (0.12.1).
Fix build on GHC 9.2 (Joseph C. Sible).
Fix trypandoc so it builds with aeson > 2.

pandoc 2.15 (2021-10-23)

Add --sandbox option (#5045).
- Add sandbox feature. When this option is used, readers and writers only have access to input files (and other files specified directly on command line). This restriction is enforced in the type system.
- Filters, PDF production, custom writers are unaffected. This feature only insulates the actual readers and writers, not the pipeline around them in Text.Pandoc.App.
- Note that when --sandboxed is specified, readers won't have access to the resource path, nor will anything have access to the user data directory.
--self-contained: Fix bug that caused everything to be made a data URI (#7635, #7367). We only need to use data URIs in certain cases, but due to a bug they were being used always.
Pandoc will now fall back to latin1 encoding for inputs that can't be read as UTF-8. This is what it did previously for content fetched from the web and not marked as to content type. It makes sense to do the same for local files. In this case a NotUTF8Encoded warning will be issued, indicating that pandoc is interpreting the input as latin1.
Markdown reader:
- Don't parse links or bracketed spans as citations (#7632). Previously pandoc would parse [link to (@a)](url) as a citation; similarly [(@a)]{#ident}. This is undesirable. One should be able to use example references in citations, and even if @a is not defined as an example reference, [@a](url) should be a link containing an author-in-text citation rather than a normal citation followed by literal (url).
- Fix interaction of --strip-comments and list parsing (#7521). Use of --strip-comments was causing tight lists to be rendered as loose (as if the comment were a blank line).
- Fix parsing bug for math in bracketed spans and links (#7623). This affects math with unbalanced brackets (e.g. $(0,1]$ ) inside links, images, bracketed spans.
- Fix code blocks using --preserve-tabs (#7573). Previously they did not behave as the equivalent input with spaces would.
DocBook reader:
- Honor linenumbering attribute (Samuel Tardieu). The attribute DocBook linenumbering="numbered" on code blocks maps to the numberLines class internally.
LaTeX reader:
- Implement siunitx v3 commands (#7614). We support \unit, \qty, \qtyrange, and \qtylist as synonyms of \si, \SI, \SIrange, and \SIlist.
- Properly handle \^ followed by group closing (#7615).
- Recognize that \vadjust sometimes takes "pre" (#7531).
- Ignore (and gobble parameters of) CSLReferences environment (#7531). Otherwise we get the parameters as numbers in the output.
- Restrict \endinput to current file (Simun Schuster).
RST reader: handle escaped colons in reference definitions (#7568).
HTML reader:
- Handle empty tbody element in table (#7589).
Ipynb reader (Kolen Cheung):
- Get cell output mime from raw_mimetype in addition to format. (format is what the spec calls for, but raw_mimetype is often used in practice; see jupyter/nbformat#229).
- Add more formats that can be handled as "raw" cells.
- Fix mime type for rst.
- Support text/markdown, which is now a supported mime type for raw output (#7561).
RTF reader:
- Support \binN for binary image data.
- If doc begins with {\rtf1 ... } only parse its contents. Some documents seem to have non-RTF (e.g. XML) material after the {\rtf1 ... } group.
- Ignore \pgdsc group. Otherwise we get style names treated as test.
- Better handling of \* and bookmarks. We now ensure that groups starting with \* never cause text to be added to the document. In addition, bookmarks now create a span between the start and end of the bookmark, rather than an empty span.
Docx reader:
- Avoid blockquote when parent style has more indent (Milan Bracke). When a paragraph has an indentation different from the parent (named) style, it used to be considered a blockquote. But this only makes sense when the paragraph has more indentation. So this commit adds a check for the indentation of the parent style.
- Fix handling of empty fields (Milan Bracke). Some fields only have an instrText and no content, Pandoc didn't understand these, causing other fields to be misunderstood because it seemed like a field was still open when it wasn't.
- Implement PAGEREF fields (Milan Bracke). These fields, often used in tables of contents, can be a hyperlink.
- Fix handling of nested fields (Milan Bracke). Fields delimited by fldChar elements can contain other fields. Before, the nested fields would be ignored, except for the end, which would be considered the end of the parent field.
- Add placeholder for word diagram instead of just omitting it (Ezwal).
Org reader:
- Don't parse a list as first item in a list item (#7557).
- Allow an initial :PROPERTIES: drawer to add to metadata (#7520).
Docx writer:
- Make id used in native_numbering predictable (#7551). If the image has the id IMAGEID, then we use the id ref_IMAGEID for the figure number. This allows one to create a filter that adds a figure number with figure name, e.g. <w:fldSimple w:instr=" REF ref_superfig "><w:r><w:t>Figure X</w:t> </w:r></w:fldSimple>. If an image lack an id, an id of the form ref_fig1 is used.

Ensure we have unique ids for wp:docPr and pic:cNvPr elements (#7527, #7503).
Handle SVG images (#4058). This change has several parts:
- In Text.Pandoc.App, if the writer is docx, we fill the media bag and attempt to convert any SVG images to PNG, adding these to the media bag. The PNG backups have the same filenames as the SVG images, but with an added .png extension. If the conversion cannot be done (e.g. because rsvg-convert is not present), a warning is omitted.
- In Text.Pandoc.Writers.Docx, we now use Word 2016's syntax for including SVG images. If a PNG fallback is present in the media bag, we include a link to that too.

Powerpoint writer (Emily Bourke):
- Add support for more layouts (#5097). Up til now, four layouts were supported: "Title Slide" (used for the automatically generated metadata slide), "Section Header" (used for headings above slide level), "Two Column" (used when there's a columns div), "Title and Content" (used for all other slides). We now support three additional layouts: "Comparison", "Content with Caption", and "Blank". The manual describes the logic that determines which layout is used for a slide. Layouts may be customized in the reference doc.
- Support specifying slide background images using a background-image attribute on the slide's heading. Only the "stretch" mode is supported, and the background image is centred around the slide in the image's larger axis, matching the observed default behaviour of PowerPoint.
- Add support for incremental lists (through same methods as in other slide writers) (#5689).
- Copy embedded fonts from reference doc.
- Include all themes in output archive.
- Fix list level numbering (#4828, #4663). In PowerPoint, the content of a top-level list is at the same level as the content of a top-level paragraph: the only difference is that a list style has been applied. Previously, the writer incremented the paragrap h level on each list, turning what should be top-level lists into second-level lists.
- Line up list continuation paragraphs. This commit changes the marL and indent values used for plain paragraphs and numbered lists, and changes the spacing defined in the reference doc master for bulleted lists. For paragraphs, there is now a left-indent taken from the otherStyle in the master. For numbered lists, the number is positioned where the text would be if this were a plain paragraph, and the text is indented to the next level. This means that continuation paragraphs line up nicely with numbered lists. Existing reference docs may need to be modified so that otherStyle and bodyStyle indent levels match, for this feature to work with them.
- Consolidate text runs when possible (jgm). This slims down the output files by avoiding unnecessary text run elements.
- Support footers in the reference doc. There is one behaviour which may not be immediately obvious: if the reference doc specifies a fixed date (i.e. not automatically updating), and there’s a date specified in the metadata for the document, the footer date is replaced by the metadata date.
- Fix presentation rel numbering. Before now, the numbering of rIds was inconsistent when making the presentation XML and when making the presentation relationships XML.
- Don’t add relationships unnecessarily. Before now, for any layouts added to the output from the default reference doc, the relationships were unconditionally added to the output. However, if there was already a layout in slideMaster1 at the same index then that results in duplicate relationships.
- If slide level is 0, don't insert a slide break between a heading and a following table, "columns" div, or paragraph starting with an image.
- Fix capitalisation of notesMasterId.
- Restructure tests.
Asciidoc writer:
- Translate numberLines attribute to linesnum switch (Samuel Tardieu).
- Improve escaping for -- in URLs (#7529).
LaTeX writer:
- Make babel use more idiomatic (#7604, hseg). Use babel's bidi implementation. Import babel languages individually instead of as package options. Move header-includes to after babel setup so it can be modified.
- Use babel, not polyglossia, with xelatex. Previously polyglossia worked better with xelatex, but that is no longer the case, so we simplify the code so that babel is used with all latex engines. This involves a change to the default LaTeX template.
Markdown writer:
- Avoid bad wraps at the Doc Text level. Previously we tried to do this at the Inline list level, but it makes more sense to intervene on breaking spaces at the Doc Text level.
- Use underline class rather than ul for underline. This only affects output with bracketed_spans enabled. The markdown reader parses spans with either .ul or .underline as Underline elements, but we're moving towards preferring the latter.
RST writer:
- Properly handle anchors to ids with spaces or leading underscore (#7593). In this cases we need the quoted form, e.g.
```
.. _`foo bar`:

.. _`_foo`:
```
  Side note: rST will "normalize" these identifiers anyway, ignoring the underscore.
HTML writer:
- Render \ref and \eqref as inline math, not display (see #7589).
- Pass through \ref and \eqref if MathJax is used (#7587).
- Pass through inline math environments with KaTeX.
- Support --reference-location for HTML output (#7461, Francesco Mazzoli).
- Set "hash" to True by default (for reveal.js) (#7574). See #6968 where the motivation for setting "hash" to True is explained.
Native writer: Use pretty-show to format native output (#7580). Previously we used our own homespun formatting. But this produces over-long lines that aren't ideal for diffs in tests. Performance is slower by about a factor of 10, but this isn't really a problem because native isn't suitable as a serialization format. (For serialization you should use json, because the reader is so much faster than native.)
Org writer:
- Don't indent contents of code blocks. We previously indented them by two spaces, following a common convention. Since the convention is fading, and the indentation is inconvenient for copy/paste, we are discontinuing this practice.
- Update list of supported source languages in org writer (#5440).
Ipynb writer (Kolen Cheung):
- Improve round trip identity for raw cell output. See jupyter/nbformat#229. The Jupyter ecosystem, including nbconvert, lab and notebook, deviated from their own spec in nbformat, where they used the key raw_mimetype instead of format. Moreover, the mime-type of rst used in Jupyter deviated from that suggested by https://docutils.sourceforge.io/FAQ.html and is defined as text/restructuredtext when chosen from "Raw NBConvert Format" in Jupyter. The new behavior should matche the real world usage better, hence improving the round-trip "identity" in raw-cell.
- Add more formats that can be handled as "raw" cells.
EPUB writer:
- Add EPUB3 subject metadata (authority/term) (nuew). This adds the ability to specify EPUB 3 authority and term specific refinements to the subject tag. Specifying a plain subject tag in metadata will function as before.
- Treat epub:type "frontispiece" as front matter (#7600).
reveal.js template: Fix line numbers in source code (#7634). We need overflow: visible for these to work, and reveal's default css disables this. So we re-enable it in the default template.
Text.Pandoc.Writers.Shared:
- Export splitSentences as a Doc Text transform [API change]. Use this in man/ms. We used to attempt automatic sentence splitting in man and ms output, since sentence-ending periods need to be followed by two spaces or a newline in these formats. But it's difficult to do this reliably at the level of [Inline].
Text.Pandoc.Translations: small revisions for compatibility with aeson 2.
Don't prepend file:// to --syntax-definition on Windows (#6374). This was a fix for a problem in skylighting, but this problem doesn't exist now that we've moved from HXT to xml-conduit.
Text.Pandoc.Extensions:
- Add Ext_footnotes to default gfm etxensions. Now gfm supports footnotes.
- Alphabetize Extension constructors (also affects --list-extensions).
Text.Pandoc.Citeproc.Util: Better implementation of splitStrWhen. Previously the citeproc code had two less efficient implementations.
Update documentation for definition_list extension (#7594). In 2015, we relaxed indentation requirements for the first line of a definition (see commit d3544dc and issue #2087), but the documnentation wasn't updated to reflect the change.
Text.Pandoc.Citeproc.BibTeX: Fix expansion of special strings in series e.g. newseries or library (#7591). Expansion should not happen when these strings are protected in braces, or when they're capitalized.
Text.Pandoc.Logging: add NotUTF8Encoded constructor to LogMessage [API change].
Text.Pandoc.App.FormatHeuristics: remove .tei.xml extension for TEI (#7630). This never worked, because takeExtension only returns .xml. So it won't be missed if we remove it.
Text.Pandoc.Image:
- Generalize svgToPng to MonadIO.
- svgToPng, change first parameter from WriterOptions to Int.
Text.Pandoc.Class:
- Add readStdinStrict method to PandocMonad [API change].
- Generalize type of extractMedia [API change]. It was uselessly restricted to PandocIO, instead of any instance of PandocMonad and MonadIO.
Text.Pandoc.Class.PandocIO: derive MonadCatch, MonadThrow, MonadMask. This allows us to use withTempDir [API change].
Add module Text.Pandoc.Class.Sandbox, defining sandbox. Exported via Text.Pandoc.Class. [API change]
Text.Pandoc.Filter: Generalize type of applyFilters from PandocIO to any instance of MonadIO and PandocMonad [API change].
Text.Pandoc.PDF: generalize type of makePDF: instead of PandocIO, it can be used in any instance of PandocMonad, MonadIO, and MonadMask [API change].
Lua subsystem and custom writers: generalize types from PandocIO to any instance of PandocMonad and MonadIO [API change]. The type of runLua is now
```
(PandocMonad m, MonadIO m) =>
LuaE PandocError a -> m (Either PandocError a)
```
The change from Lua to LuaE PandocError is due to the switch to hslua-2.0; see next item.
Lua modules (Albert Krewinkel):
- Switch to hslua-2.0. The new HsLua version takes a somewhat different approach to marshalling and unmarshalling, relying less on typeclasses and more on specialized types. This allows for better performance and improved error messages. Furthermore, new abstractions allow to document the code and exposed functions.
- Marshal Version values, Inline elements, Attr elements, and Pandoc elements as userdata.
- Remove deprecated inline constructors DoubleQuoted, SingleQuoted, DisplayMath, and InlineMath.
- Attr values are no longer normalized when assigned to an Inline element property.
- It's no longer possible to access parts of Inline elements via numerical indexes. E.g., pandoc.Span('test')[2] used to give pandoc.Str 'test', but yields nil now. This was undocumented behavior not intended to be used in user scripts. Use named properties instead.
- Accessing .c to get a JSON-like tuple of all components no longer works. This was undocumented behavior.
- Only known properties can be set on an element value. Trying to set a different property will now raise an error.
- Adds a new pandoc.AttributeList() constructor, which creates the associative attribute list that is used as the third component of Attr values. Values of this type can often be passed to constructors instead of Attr values.
- Convert IOErrors to PandocErrors in pandoc.pipe function (#7523).
Text.Pandoc.PDF: Previously we had to run runIOorExplode inside withTempDir. Now that PandocIO is an instance of MonadMask, this is no longer necessary.
Text.Pandoc.App:
- Reorganize to make it easier to limit IO in main loop. Previously we used liftIO fairly liberally. The code has been restructured to avoid this.
- Move output-file writing out of PandocMonad action.
Text.Pandoc.App.OutputSettings: Generalize some types so we can run this with any instance of PandocMonad and MonadIO, not just PandocIO.
Use simpleFigure builder in readers and SimpleFigure pattern synonym in writers (Aner Lucero).
Allow time 1.12.
Use skylighting-0.12, skylighting-core-0.12. This fixes highlighting issues with typescript, scala, and other syntaxes that include keyword lists from different syntaxes.
Use citeproc 0.6, commonmark 0.2.2.1, commonmark-extensions 0.2.2, texmath 0.12.3.2, ipynb 0.1.0.2. (These changes also allow building with aeson >= 2.)
Require doclayout >= 0.3.1.1. This fixes recognition of "real widths" of emoji characters, which is important for tabular layout.
Cut out over 100K of fat in epub test golden files.
Make test/epub/wasteland.epub valid.
Add missing % on some command tests. This prevented --accept from working properly.
Command tests: raise error if command doesn't begin with %.
OOXML tests: use pretty-printed form to display diffs. Otherwise everything is on one line and the diff is uninformative.
Fix compareXML helper in Tests.Writers.OOXML. Given how it is used, we were getting "mine" and "good" flipped in the test results.
MANUAL.txt:
- Clarify attributes extension support (William Lupton).
- Document formats affected by --reference-location.
- Document error code 25
- Add some more info regarding --slide-level=0 (Salim B).
- Add more to security section of manual.
- Mention support of title-toc (#7171, Christophe Dervieux).
doc/lua-filters.md:
- Add missing type for Image title (Quinn).
- Improve order of Image fields (Quinn).
- Rephrase pandoc.path docs (#7548, Quinn).
- Do not leak working directory in TikZ filter (Jeroen de Haas).

pandoc 2.14.2 (2021-08-21)

Allow --slide-level=0 (#7476). When the slide level is set to 0, headings won't be used at all in splitting the document into slides. Horizontal rules must be used to separate slides.
Add RTF reader (#3982). rtf is now supported as an input format as well as an output format. New module Text.Pandoc.Readers.RTF (exporting readRTF). [API change]
HTML reader: treat comments as blank when parsing (#7482).
Markdown reader:
- Fix raw LaTeX injection issue (#7497). Using a code block containing \end{verbatim}, one could inject raw TeX into a LaTeX document even when raw_tex is disabled. Thanks to Augustin Laville for noticing the bug.
- Multimarkdown sub- and superscripts (#5512, OCzarnecki). Added an extension short_subsuperscripts which modifies the behavior of subscript and superscript, allowing subscripts or superscripts containing only alphanumerics to end with a space character (eg. x^2 = 4 or H~2 is combustible). This improves support for multimarkdown.
RST reader: Fix :literal: includes (#7513). These should create code blocks, not insert raw RST.
LaTeX reader:
- Proper implicit grouping around environment macros.
- Support \global before \def, \let, etc. (#7494).
- Fix scope for LaTeX macros (#7494). They should by default scope over the group in which they are defined (except \gdef and \xdef, which are global). In addition, environments must be treated as groups.
- Improve handling of plain TeX macro primitives (#7474). Fixed semantics for \let.
- Implement \edef, \gdef, and \xdef.
Docx reader: Improve docx reader's robustness in extracting images (#7511). The docx reader made some assumptions about how docx containers were laid out that were not always true, with the result that some images in documents did not get extracted.
LaTeX writer: Increase table column width precision (#7466, Peter Fabinski). In some cases, the rounding performed by the LaTeX table writer would introduce visible overrun outside the text area. This adds two more decimal places to the width values.
Powerpoint writer:
- Include image title in description (#7352, Emily Bourke). The image title (i.e. ![alt text](link "title")) was previously ignored when writing to pptx. This commit includes it in PowerPoint's description of the image, along with the link.
- Select layouts from reference doc by name (Emily Bourke). Until now, users had to make sure that their reference doc contains layouts in a specific order: the first four layouts in the file had to have a specific structure. Now the layout selection uses the layout names rather than order: users must make sure their reference doc contains four layouts with specific names, and if a layout with the right name isn’t found pandoc will emit a warning and use the corresponding layout from the default reference doc as a fallback.
Docx writer: be sensitive to the native_numbering extension (#7499). Figure and table numbers are now only included if native_numbering is enabled. (By default it is disabled.) This is a behavior change with respect to 2.14.1, but the default behavior is now that of previous versions. The change was necessary to avoid incompatibilities between pandoc's native numbering and third-party cross reference filters like pandoc-crossref.
RTF writer:
- Omit \bin in \pict. According to the spec, this is not needed or wanted when the data is in hexadecimal format, as here.
- Emit `\outlinelevel`` for section headings.
RTF template: specify font family for fixed-width font f1. According to the spec, this is mandatory.
LaTeX writer: Use ulem for underline (#7351). ulem is conditionally included already when the strikeout variable is set, so we set this when there is underlined text, and use \uline instead of \underline. This fixes wrapping for underlined text.
Text.Pandoc.Citeproc:
- Revise citeproc code to fit new citeproc 0.5 API (thanks to Benjamin Bray). Linkification of URLs in the bibliography is now done in the citeproc library, depending on the setting of an option. We set that option depending on the value of the metadata field link-bibliography (defaulting to true, for consistency with earlier behavior). If a DOI, PMID, PMCID, or URL field is present but not explicitly rendered, the title (or if no title, the whole entry) is hyperlinked. These changes implement the recommendations from the draft CSL v1.0.2 spec (Appendix VI): https://github.com/citation-style-language/documentation/blob/master/specification.rst#appendix-vi-links
- Avoid odd handling of quotes. Recent citeproc changes allow us to ignore Quoted elements; citeproc now uses its own method for represented quoted things, and only localizes and flipflops quotes it adds itself. Convert Quoted in bib entries to special Spans before passing them off to citeproc. This ensures that we get proper localization and flipflopping if, e.g., quotes are used in titles (jgm/citeproc#87).
- Removed quote localization from citeproc processing. This is now done in citeproc itself.
Text.Pandoc.Logging: Add PowerpointTemplateWarning log message type [API change] (Emily Bourke).
Text.Pandoc.Extension: Add Ext_short_subsuperscripts constructor to Extension [API change] (OCzarnecki).
Various sample.lua editorial fixes (#7493, #7487, William Lupton).
Bump base-compat version so we get compatibility with base 4.12.
Use Prelude from base-compat for ghc 8.4 too.
Add haskell-language-server to shell.nix (#7496, Emily Bourke).
Tests.Helpers: export testGolden and use it in RTF reader. This gives a diff output on failure.
Remove obsolete and incorrect sentence in --slide-level docs.
Add internal module Text.Pandoc.Network.HTTP, exporting urlEncode.
Text.Pandoc.Parsing: parseFromString: preserve at least the source directory (#7464). Previously we just set the source name to "chunk" when parsing from strings, to avoid misleading source positions. This had the side effect that rebase_relative_paths would break inside sections that were parsed as strings. So, now we use "ORIGINAL_SOURCE_PATH_chunk" instead of just "chunk".
Text.Pandoc.MIME: use image/x-xcf instead of application/x-xcf (#7454).
Don’t compare cdLine in OOXML golden tests (Emily Bourke). The cdLine field gives the line of the file some CData was found on, which reflects irrelevant formatting differences.
Provide more detailed XML diff in tests (Emily Bourke).
OOXML tests: silence warnings. These can make the test output confusing, making people think tests are failing when they're passing.
INSTALL.md: Add GitLab CI/CD example (#7448, Veratyr).
MANUAL.txt
- Clarifications (William Lupton).
- Add a note on security risks of include directives.
Document use of the 'underline' class (#7492, #7484, William Lupton).
Add a FAQ about the "Cannot allocate memory" error on M1 macs.
Use texmath 0.12.3.1.
Use released citeproc 0.5.
Remove dependency on HTTP package (#7456, mt_caret).

pandoc 2.14.1 (2021-07-18)

Text.Pandoc.ImageSize: Add Tiff constructor for ImageType (#7405) [Minor API change]. This allows pandoc to get size information from tiff images.
Markdown reader: don't try to read contents in self-closing HTML tag. Previously we had problems parsing raw HTML with self-closing tags like <col/>. The problem was that pandoc would look for a closing tag to close the markdown contents, but the closing tag had, in effect, already been parsed by htmlTag.
LaTeX reader:
- Avoid trailing hyphen in translating languages (#7447). Previously \foreignlanguage{english} turned into <span lang="en-">. The same issue affected Arabic.
- Support \cline in LaTeX tables (#7442).
- Improved parsing of raw LaTeX from Text streams (rawLaTeXParser, used to read LaTeX in Markdown files, #7434). We now use source positions from the token stream to tell us how much of the text stream to consume. Getting this to work required a few other changes to make token source positions accurate.
DocBook reader:
- Handle images with imageobjectco elements (#7440).
- Add support for citerefentry (#7437, Jan Tojnar).
RST reader: fix regression with code includes (#7436). With the recent changes to include infrastructure, included code blocks were getting an extra newline.
HTML reader:
- Recognize data-external when reading HTML img tags (#7429, Michael Hoffmann). Preserve all attributes in img tags. If attributes have a data- prefix, it will be stripped. In particular, this preserves a data-external attribute as an external attribute in the pandoc AST.
- Add col, colgroup to 'closes' definitions
HTML writer:
- Remove duplicated alt text in HTML output (Aner Lucero).
- Remove aria-hidden when explicit alt text is provided (Aner Lucero).
- Set boolean values for reveal.js variables.
Docx writer:
- Add table numbering for captioned tables. The numbers are added using fields, so that Word can create a list of tables that will update automatically.
- Support figure numbers. These are set up in such a way that they will work with Word's automatic table of figures (#7392).
Markdown writer: put space between Plain and following fenced Div (#4465).
EPUB writer: Don't incorporate externally linked images in EPUB documents (#7430, Michael Hoffmann). Just as it is possible to avoid incorporating an image in EPUB by passing data-external="1" to a raw HTML snippet, this makes the same possible for native Images, by looking for an associated external attribute.
Text.Pandoc.PDF:
- Fix svgIn path error (#7431). We were duplicating the temp directory; this didn't cause problems on macOS or linux because there we use absolute paths for the temp directory. But on Windows it caused errors converting SVG files.
- convertImage: normalize paths (#7431). This will avoid paths on Windows with mixed path separators.
Text.Pandoc.Class: Always use / when adding directory to image destination with extractMedia, even on Windows.
Text.Pandoc.Citeproc:
- Allow $ characters in bibtex keys (#7409).
- Set proper initial source name in parsing BibTeX (for better error messages.)
- Revamp note citation handling (#7394). Use latest citeproc, which uses a Span with a class rather than a Note for notes. This helps us distinguish between user notes and citation notes. Don't put citations at the beginning of a note in parentheses. Fix small bug in handling of citations in notes, which led to commas at the end of sentences in some cases.
- Cleanup and efficiency improvement in deNote.
- Improve punctuation moving with --citeproc. Previously, using --citeproc could cause punctuation to move in quotes even when there aer no citations. This has been changed; punctuation moving is now limited to citations. In addition, we only move footnotes around punctuation if the style is a note style, even if notes-after-punctuation is true.
Use citeproc 0.10. This helps improve note citations (see above) and eliminates double hyperlinks in author-in-text citations. Author-only citations are no longer hyperlinked. See jgm/citeproc#77. It also fixes moving of punctuation inside quotes to conform to the CSL spec: only comma and period are moved, not question mark or exclamation point.
Text.Pandoc.Error: fix line calculations in reporting parsec errors. Also remove a spurious initial newline in the error report.
Use doctemplates 0.4.1, which gives us better support for boolean variable values. Previously $if(foo)$ would evaluate to true for variables with boolean false values, because it cared only about the string rendering (#7402).
Require commonmark-pandoc >= 0.2.2.1. This fixes task lists with multiple paragraphs.
Use skylighting 0.11.
CSS in HTML template: reset overflow-wrap on code blocks (Mauro Bieg, #7423).
LaTeX template: Revert change in PR #7295: "move title, author, date up to top of preamble." The change caused problem for people who used LaTeX commands defined defined later in the preamble in the title or author fields (#7422).
Add doc/faqs.md. This is imported from the website; in the future the website version will be drawn from here. Added a FAQ on the use of \AtEndPreamble for cases when the contents of header-includes need to refer to definitions that come later in the preamble. See #7422.
Upgrade Debian 10 AMI for build-arm.sh.
CircleCI: change to using xcode 11.1.0 (macOS 10.14.4). We previously built on 10.13, but 10.13 no longer gets security updates and CirclCI is deprecating.

pandoc 2.14.0.3 (2021-06-22)

Text.Pandoc.MediaBag insertMediaBag: ensure we get a sane mediaPath for URLs (#7391). In earlier 2.14.x versions, we'd get incorrect paths for resources downloaded from URLs when the media are extracted (including in PDF production).
Text.Pandoc.Parsing: improve emailAddress (#7398). Previously the parser would accept characters in domains that are illegal in domains, and this sometimes caused it to gobble bits of the following text.
txt2tags reader: modify the email address parser so it still includes form parameters, even after the change to emailAddress in Text.Pandoc.Parsing.
Text.Pandoc.Readers.Metadata: Fix regression with comment-only YAML metadata blocks (#7400).
reveal.js writer and template: better handling of options. Previously it was impossible to specify false values for options that default to true (e.g. center); setting the option to false just caused the portion of the template setting the option to be omitted. Now we prepopulate all the variables with their default values, including them all unconditionally and allowing them to be overridden.
Markdown writer: Fix regression in code blocks with attributes (#7397). Code blocks with a single class but nonempty attributes were having attributes drop as a result of #7242.
LaTeX writer:
- Add strut at end of minipage if it contains line breaks. Without them, the last line is not as tall as it should be in some cases.
- Always use a minipage for cells with line breaks, when width information is available (#7393). Otherwise the way we treat them can lead to content that overflows a cell.
- Use \strut instead of ~ before \\ in empty line.
Use lts-18.0 stack resolver.
Require skylighting 0.10.5.2 (adding support for Swift).
Require commonmark 0.2.1.
Rephrase section on unsafe HTML in manual.
Create SECURITY.md

pandoc 2.14.0.2 (2021-06-13)

Fix MediaBag regressions (#7345). iIn the 2.14 release --extract-media stopped working as before; there could be mismatches between the paths in the rendered document and the extracted media. This patch makes several changes that restore the earlier behavior (while keeping the same API). The mediaPath in 2.14 was always constructed from the SHA1 hash of the media contents. Now, we preserve the original path unless it's an absolute path or contains .. segments (in that case we use a path based on the SHA1 hash of the contents).

In Text.Pandoc.MediaBag, mediaDirectory and mediaItems now use the mediaPath, rather than the mediabag key, for the first component of the tuple. This makes more sense, I think, and fits with the documentation of these functions; eventually, though, we should rework the API so that mediaItems returns both the keys and the MediaItems.

In Text.Pandoc.Class.IO, rewriting of source paths in extractMedia has been fixed.

In Text.Pandoc.Class.PandocMonad, fillMediaBag has been modified so that it doesn't modify image paths (that was part of the problem in #7345).

We now do path normalization (e.g. \ separators on Windows) in writing the media.
Text.Pandoc.PDF:
- Text.Pandoc.PDF: Fix regression in 2.14 for generation of PDFs with SVGs (#7344).
- Only print relevant part of environment on --verbose. Since --verbose output might be put in an issue, we want to avoid spilling out secrets in environment variables.
Markdown reader: fix pipe table regression in 2.11.4 (#7343). Previously pipe tables with empty headers (that is, a header line with all empty cells) would be rendered as headerless tables. This broke in 2.11.4. The fix here is to produce an AST with an empty table head when a pipe table has all empty header cells.
LaTeX reader: don't allow optional * on symbol control sequences (#7340). Generally we allow optional starred variants of LaTeX commands (since many allow them, and if we don't accept these explicitly, ignoring the star usually gives acceptable results). But we don't want to do this for $*$ and similar cases.
Docx reader: handle absolute URIs in Relationship Target (#7374).
Docx writer: fix handling of empty table headers (Albert Krewinkel, #7369). A table header which does not contain any cells is now treated as an empty header.
LaTeX writer: Fix regression in table header position (#7347). In recent versions the table headers were no longer bottom-aligned (if more than one line). This patch fixes that by using minipages for table headers in non-simple tables.
CommonMark writer:
- Do not use simple class for fenced-divs (Jan Tojnar, amends #7242.)
- Do not throw away attributes when Ext_attributes is enabled. Ext_attributes covers at least the following: Ext_fenced_code_attributes, Ext_header_attributes, Ext_inline_code_attributes, Ext_link_attributes.
Markdown writer:
- Allow pipe_tables to be disabled for commonmark formats (commonmark_x, gfm) (#7375).
- Re-use functions from Text.Pandoc.Markdown.Inline (Jan Tojnar).
DocBook writer: Remove non-existent admonitions (Jan Tojnar). attention, error and hint are reStructuredText specific.
HTML writer: Don't omit width attribute on div (#7342).
Text.Pandoc.MIME, extensionFromMimeType: add a few special cases. When we do a reverse lookup in the MIME table, we just get the last match, so when the same mime type is associated with several different extensions, we sometimes got weird results, e.g. .vs for text/plain. These special cases help us get the most standard extensions for mime types like text/plain.
Lua utils: fix handling of table headers in from_simple_table (Albert Krewinkel, #7369). Passing an empty list of header cells now results in an empty table header.
Text.Pandoc.Citeproc:
- Avoid duplicate classes and attributes on references div.
- Fix regression in citeproc processing (#7376). If inline references are used (in the metadata references field), we should still only include in the bibliography items that are actually cited (unless nocite is used).
Require citeproc 0.4.0.1. This fixes a bug which led to doubled "et al." in some (rare) circumstances.
MANUAL.txt:
- Mention GladTeX for EPUB export (Sebastian Humenda). This updates the manual and the web site about the GladTeX usage.
- More details and a useful link for YAML syntax.
CONTRIBUTING.md: update modules overview (Albert Krewinkel).
using-the-pandoc-api.md: switch from String to Text (Albert Krewinkel).

pandoc 2.14.0.1 (2021-06-01)

Commonmark reader: Fix regression in 2.14 with YAML metdata block parsing, which could cause the document body to be omitted after metadata (#7339).
HTML reader: fix column width regression in 2.14 (#7334). Column widths specified with a style attribute were off by a factor of 100.
Markdown reader: in rebasePaths, check for both Windows and Posix absolute paths. Previously Windows pandoc was treating /foo/bar.jpg as non-absolute.
Text.Pandoc.Logging: In rendering LoadedResource, use relative paths.
Docx writer: fix regression on captions (#7328). The "Table Caption" style was no longer getting applied. (It was overwritten by "Compact.")
Use commonmark-extensions 0.2.1.2

pandoc 2.14 (2021-05-28)

Change reader types, allowing better tracking of source positions [API change]. Previously, when multiple file arguments were provided, pandoc simply concatenated them and passed the contents to the readers, which took a Text argument. As a result, the readers had no way of knowing which file was the source of any particular bit of text. This meant that we couldn't report accurate source positions on errors or include accurate source positions as attributes in the AST. More seriously, it meant that we couldn't resolve resource paths relative to the files containing them (see e.g. #5501, #6632, #6384, #3752).
Add rebase_relative_paths extension (#3752). When enabled, this extension rewrites relative image and link paths by prepending the (relative) directory of the containing file. This behavior is useful when your input sources are split into multiple files, across several directories, with files referring to images stored in the same directory. The extension can be enabled for all markdown and commonmark-based formats.
Add Text.Pandoc.Sources (exported module), with a Sources type and a ToSources class. A Sources wraps a list of (SourcePos, Text) pairs [API change]. A parsec Stream instance is provided for Sources. The module also exports versions of parsec's satisfy and other Char parsers that track source positions accurately from a Sources stream (or any instance of the new UpdateSourcePos class).
Text.Pandoc.Parsing
- Export the modified Char parsers defined in Text.Pandoc.Sources instead of the ones parsec provides. Modified parsers to use a Sources as stream [API change].
- Improve include file functions [API change]. Remove old insertIncludedFileF. Give insertIncludedFile a more general type, allowing it to be used where insertIncludedFileF was.
- Add parameter to the citeKey parser from Text.Pandoc.Parsing, which controls whether the @{..} syntax is allowed [API change].
Text.Pandoc.Error: Modified the constructor PandocParsecError to take a Sources rather than a Text as first argument, so parse error locations can be accurately reported.
Fix source position reporting for YAML bibliographies (#7273).
Issue error message when reader or writer format is malformed (#7231). Previously we exited with an error status but (due to a bug) no message.
Smarter smart quotes (#7216, #2103). Treat a leading " with no closing " as a left curly quote. This supports the practice, in fiction, of continuing paragraphs quoting the same speaker without an end quote. It also helps with quotes that break over lines in line blocks.
Markdown reader:
- Use MetaInlines not MetaBlocks for multimarkdown metadata fields. This gives better results in converting to e.g. pandoc markdown.
- Implement curly-brace syntax for Markdown citation keys (#6026). The change provides a way to use citation keys that contain special characters not usable with the standard citation key syntax. Example: @{foo_bar{x}'} for the key foo_bar{x}. It also allows separating citation keys from immediately following text, e.g. @{foo}A.
RST reader:
- Seek include files in the directory of the file containing the include directive, as RST requires (#6632).
- Use insertIncludedFile from Text.Pandoc.Parsing instead of reproducing much of its code.
Org reader: Resolve org includes relative to the directory containing the file containing the INCLUDE directive (#5501).
ODT reader: Treat tabs as spaces (#7185, niszet).
Docx reader:
- Add handling of vml image objects (#7257, mbrackeantidot).
- Support new table features (Emily Bourke, #6316): column spans, row spans, multiple header rows, table description (parsed as a simple caption), captions, column widths.
LaTeX reader:
- Improved siunitx support (#6658, #6620).
- Better support for \xspace (#7299).
- Improve parsing of \def macros. We previously set "verbatim mode" even for parsing the initial \def; this caused problems for \def nested inside another \def.
- Implement \newif.
ConTeXt writer: improve ordered lists (#5016, Denis Maier). Change ordered list from itemize to enumerate. Add new itemgroup for ordered lists. Remove manual insertion of width attributes. Use tabular figures in ordered list enumerators.
HTML reader:
- Don't fail on unmatched closing "script" tag (Albert Krenkel, #7282).
- Keep h1 tags as normal headers (#2293, Albert Krewinkel). The tags <title> and <h1 class="title"> often contain the same information, so the latter was dropped from the document. However, as this can lead to loss of information, the heading is now always retained. Use --shift-heading-level-by=-1 to turn the <h1> into the document title, or a filter to restore the previous behavior.
- Handle relative lengths (e.g. 2*) in HTML column widths (#4063). See https://www.w3.org/TR/html4/types.html#h-6.6.
DocBook/JATS readers:
- Fix mathml regression caused by the switch in XML libraries (#7173).
- Fix "phrase" in DocBook: take classes from "role" not "class" (#7195).
DocBook reader: ensure that first and last names are separated (#6541).
Jira reader (Albert Krewinkel, #7218):
- Support "smart" links: [alias|https://example.com|smart-card] syntax.
- Allow spaces and most unicode characters in attachment links.
- No longer require a newline character after {noformat}.
- Only allow URI path segment characters in bare links.
- The file: schema is no longer allowed in bare links; these rarely make sense.
Plain writer: handle superscript unicode minus (#7276).
LaTeX writer:
- Better handling of line breaks in simple tables (#7272). Now we also handle the case where they're embedded in other elements, e.g. spans.
- For beamer output, support exampleblock and alertblock (#7278). A block will be rendered as an exampleblock if the heading has class example and an alertblock if it has class alert.
- Separate successive quote chars with thin space (#6958, Albert Krewinkel). Successive quote characters are separated with a thin space to improve readability and to prevent unwanted ligatures. Detection of these quotes sometimes had failed if the second quote was nested in a span element.
- Separate successive quote chars with thin space (#6958, Albert Krewinkel).
EPUB Writer: Fix belongs-to-collection XML id choice (#7267, nuew). The epub writer previously used the same XML id for both the book identifier and the epub collection. This causes an error on epubcheck.
BibTeX/BibLaTeX writer: Handle annote field (#7266).
ZimWiki writer: allow links and emphasis in headers (#6605, Albert Krewinkel).
ConTeXt writer:
- Support blank lines in line blocks (#6564, Albert Krewinkel, thanks to @denismaier).
- Use span identifiers as reference anchors (#7246, Albert Krewinkel).
HTML writer:
- Keep attributes from code nested below pre tag (#7221, Albert Krewinkel). If a code block is defined with <pre><code class="language-x">…</code></pre>, where the <pre> element has no attributes, then the attributes from the <code> element are used instead. Any leading language- prefix is dropped in the code's class attribute are dropped to improve syntax highlighting.
- Ensure headings only have valid attribs in HTML4 (#5944, Albert Krewinkel).
- Parse <header> as a Div (Albert Krewinkel).
Org writer:
- Inline latex envs need newlines (#7252, tecosaur). As specified in https://orgmode.org/manual/LaTeX-fragments.html, an inline \begin{}...\end{} LaTeX block must start on a new line.
- Use LaTeX style maths deliminators (#7196, tecosaur).
JATS writer (Albert Krewinkel):
- Use either styled-content or named-content for spans (#7211). If the element has a content-type attribute, or at least one class, then that value is used as content-type and the span is put inside a <named-content> element. Otherwise a <styled-content> element is used instead.
- Reduce unnecessary use of <p> elements for wrapping (#7227). The <p> element is used for wrapping in cases were the contents would otherwise not be allowed in a certain context. Unnecessary wrapping is avoided, especially around quotes (<disp-quote> elements).
- Convert spans to <named-content> elements (#7211). Spans with attributes are converted to <named-content> elements instead of being wrapped with <milestone-start/> and <milestone-end> elements. Milestone elements are not allowed in documents using the articleauthoring tag set, so this change ensures the creation of valid documents.
- Add footnote number as label in backmatter (#7210). Footnotes in the backmatter are given the footnote's number as a label. The articleauthoring output is unaffected from this change, as footnotes are placed inline there.
- Escape disallows chars in identifiers. XML identifiers must start with an underscore or letter, and can contain only a limited set of punctuation characters. Any IDs not adhering to these rules are rewritten by writing the offending characters as Uxxxx, where xxxx is the character's hex code.
Jira writer: use {color} when span has a color attribute (Albert Krewinkel, tarleb/jira-wiki-markup#10).
Docx writer:
- Autoset table width if no column has an explicit width (Albert Krewinkel).
- Extract Table handling into separate module (Albert Krewinkel).
- Support colspans and rowspans in tables (Albert Krewinkel, #6315).
- Support multirow table headers (Albert Krewinkel).
- Improve integration of settings from reference.docx (#1209). This change allows users to create a reference.docx that sets w:proofState for spelling or grammar to dirty, so that spell/grammar checking will be triggered on the generated docx.
- Copy over more settings from reference.docx (#7240). From settings.xml in the reference-doc, we now include: zoom, embedSystemFonts, doNotTrackMoves, defaultTabStop, drawingGridHorizontalSpacing, drawingGridVerticalSpacing, displayHorizontalDrawingGridEvery, displayVerticalDrawingGridEvery, characterSpacingControl, savePreviewPicture, mathPr, themeFontLang, decimalSymbol, listSeparator, autoHyphenation, compat.
- Set zoom to 100% by default in settings.xml.
- Align math options more with current Word defaults (e.g. Cambria Math font).
- Remove rsids from default settings.xml. Word will add these when revisions are made.
Ms writer: Handle tables with multiple paragraphs (#7288). Previously they overflowed the table cell width. We now set line lengths per-cell and restore them after the table has been written.
Markdown writer:
- Use cleaner braceless syntax for code blocks with a single class (#7242, Jan Tojnar).
- Add quotes properly in markdown YAML metadata fields (#7245). This fixes a bug, which caused the writer to look at the last rather than the first character in determining whether quotes were needed. So we got spurious quotes in some cases and didn't get necessary quotes in others.
- Use @{..} syntax for citations when needed.
- Use fewer unneeded escapes for # (see #6259).
- Improve escaping of @. We need to escape literal @ before { because of the new citation syntax.
Commonmark writer: Use backslash escapes for < and |... instead of entities (#7208).
Powerpoint writer: allow monofont to be specified in metadata (#7187).
LaTeX template:
- Use non-starred names for xcolor color names (#6109). This should make svgnames and x11names work properly.
- Fix bad vertical spacing after bibliography (#7234, badumont).
- List of figures before list of tables (#7235, Julien Dutant).
- Move CSL macro definitions before header-includes so they can be overridden (#7286).
- Improve treatment of CSL entry-spacing (#7296). Previously with the default template settings (indent variable not set), we would get interparagraph spaces separating bib entries even with entry-spacing="0". On the other hand, setting entry-spacing="2" gave ridiculously large spacing. This change makes the spacing caused by entry-spacing a multiple of \parskip by default, which gives aesthetically reasonable output. Those who want a larger or smaller unit (e.g. because they use indent which sets \parskip to 0) may \setlength{\cslentryspacingunit}{10pt} in header-includes to override the defaults.
- Move title, author, date up to top of preamble (#7295). This allows header-includes to use them, and puts them in a position where you can see them immediately.
- Define commands for zero width non-joiner character (#6639, Albert Krewinkel). The zero-width non-joiner character is used to avoid ligatures (e.g. in German).
ConTeXt template:
- Define enumerate itemgroup (#5016, Denis Maier).
- List of figures before list of tables (#7235, Julien Dutant).
reveal.js template:
- Support toc-title (#7171, Florian Kohrt).
- Use hash: true by default rather than history: true (#6968).
HTML-based slide shows: add support for institute (#7289, Thomas Hodgson).
Text.Pandoc.Extensions: Add constructor Ext_rebase_relative_paths to Extensions [API change].
Text.Pandoc.XML.Light: add Eq, Ord instances for Content, Element, Attr, CDataKind [API change].
Text.Pandoc.MediaBag:
- Change type to use a Text key instead of [FilePath]. We normalize the path and use / separators for consistency.
- Export MediaItem type [API change].
- Change MediaBag type to a map from Text to MediaItem [API change].
- lookupMedia now returns a MediaItem [API change].
- Change insertMedia so it sets the mediaPath to a filename based on the SHA1 hash of the contents. This will be used when contents are extracted.
Text.Pandoc.Class.PandocMonad:
- Remove fetchMediaResource [API change]. Use fetchItem to get resources in fillMediaBag.
- Add informational message in downloadOrRead indicating what path local resources have been loaded from.
Text.Pandoc.Logging:
- Remove single quotes around paths in messages.
- Add LoadedResource constructor to LogMessage [API change]. This is for INFO-level messages telling where image data has been loaded from. (This can vary because of the resource path.)
Text.Pandoc.Asciify: simplify code and export toAsciiText [API change]. Instead of encoding a giant (and incomplete) map, we now just use unicode-transforms to normalize the text to a canonical decomposition, and manipulate the result.
App: allow tabs expansion even if file-scope is used (Albert Krewinkel, #6709). Tabs in plain-text inputs are now handled correctly, even if the --file-scope flag is used.
Add new internal module Text.Pandoc.Writers.GridTable (Albert Krewinkel).
Text.Pandoc.Highlighting: Change type of languagesByExtension, adding a parameter for a SyntaxMap [API change] (Jan Tojnar, #7241). Languages defined using --syntax-definition were not recognized by languagesByExtension. This patch corrects that, allowing the writers to see all custom definitions. The LaTeX writer still uses the default syntax map, but that's okay in that context, since --syntax-definition won't create new listings styles.
Text.Pandoc.Citeproc:
- Ensure that CSL-related attributes are passed on to a Div with id 'refs'. Otherwise things like entry-spacing won't work when such Divs are used.
- Use metadata's lang for the lang parameter of citeproc, overriding localeLanguage.
- Recognize locators spelled with a capital letter (#7323).
- Add a comma and a space in front of the suffix if it doesn't start with space or punctuation (#7324).
- Don't detect math elements as locators (#7321).
Remove Text.Pandoc.BCP47 module [API change]. Use types and functions from UnicodeCollation.Lang instead. This is a richer implementation of BCP 47.
Text.Pandoc.Shared:
- Fix regression in grid tables for wide characters (#7214). In the translation from String to Text, a char-width-sensitive splitAt' was dropped. This commit reinstates it and uses it to make splitTextByInstances char-width sensitive.
- Add getLang (formerly in the now-removed BCP47) [API change].
Text.Pandoc.SelfContained: use application/octet-stream for unknown mime types instead of halting with an error (#7202).
Lua filters: respect Inlines/Blocks filter functions in pandoc.walk_* (Albert Krewinkel).
Add text as build-depend for trypandoc (#7193, Roman Beránek).
Bump upper-bounds for network-uri, time, attoparsec.
Use citeproc 0.4.
Use texmath 0.12.3.
Use jira-wiki-markup 1.3.5 (Albert Krewinkel).
Require latest skylighting (fixes a bug in XML syntax highlighting).
Use latest xml-conduit.
Use latest commonmark, commonmark-extensions, commonmark-pandoc.
Use haddock-library-1.10.0 (Albert Krewinkel).
Allow compilation with base 4.15 (Albert Krewinkel).
MANUAL:
- Add information about lang and bibliography sorting.
- Add info about YAML escape sequences, link to spec (#7152, Albert Krewinkel).
- Note that institute variable works for HTML-based slides.
- Update documentation on citation syntax.
- Add citation example for locators and suffixes (Tristan Stenner)
Updated and fixed typos in documentation (Charanjit Singh, Anti-Distinctlyminty, Tatiana Porras, obcat).
Add instructions for installing pandoc-types before compiling filter.
INSTALL: add note that parallel installations should be avoided (#6865).
Remove biblatex-nussbaum.md test. It is basically the same as biblaetx-quotes.md.
Command tests: fail if a file contains no tests---and fix a test that failed in that way!
Use smaller images in tests, reducing the size of the source tarball by 8 MB.

pandoc 2.13 (2021-03-21)

Support yaml_metadata_block extension for commonmark, gfm (#6537). This supported is a bit more limited than with pandoc's markdown. The YAML block must be the first thing in the input, and the leaf notes are parsed in isolation from the rest of the document. So, for example, you can't use reference links if the references are defined later in the document.
Fix fallback to default partials when custom templates are used. If the directory containing a template does not contain the partial, it should be sought in the default templates, but this was not working properly (#7164).
Handle nocite better with --biblatex and --natbib (#4585). Previously the nocite metadata field was ignored with these formats. Now it populates a nocite-ids template variable and causes a \nocite command to be issued.
Text.Pandoc.Citeproc: apply fixLinks correctly (#7130). This is code that incorporates a prefix like https://doi.org/ into a following link when appropriate.
Text.Pandoc.Shared:
- Remove backslashEscapes, escapeStringUsing [API change]. Replace these inefficient association list lookups with more efficient escaping functions in the writers that used them (for a 10-25% performance boost in org, haddock, rtf, texinfo writers).
- Remove ToString, ToText typeclasses [API change]. These were needed for the transition from String to Text, but they are no longer used and may clash with other things.
- Simplify compactDL.
Text.Pandoc.Parsing:
- Change type of readWithM so that it is no longer polymorphic [API change]. The ToText class has been removed, and now that we've completed the transition to Text we no longer need this to operate on Strings.
- Remove F type synonym [API change]. Muse and Org were defining their own F anyway.
Text.Pandoc.Readers.Metadata:
- Export yamlMetaBlock [API change].
- Make yamlBsToMeta, yamlBsToRefs polymorphic on the parser state [API change].
Markdown reader: Fix regression with tex_math_backslash (#7155).
MediaWiki reader: Allow block-level content in notes (ref) (#7145).
Jira reader (Albert Krewinkel):
- Fixed parsing of autolinks (i.e., of bare URLs in the text). Previously an autolink would take up the rest of a line, as spaces were allowed characters in these items.
- Emoji character sequences no longer cause parsing failures. This was due to missing backtracking when emoji parsing fails.
- Mark divs created from panels with class "panel".
RST reader: fix logic for ending comments (#7134). Previously comments sometimes got extended too far.
DocBook writer: include Header attributes as XML attributes on section (Erik Rask). Attributes with key names that are not allowed as XML attributes are dropped, as are attributes with invalid values and xml:id (DocBook 5) and id (DocBook 4).
Docx writer:
- Make nsid in abstractNum deterministic. Previously we assigned a random number, but we don't need random values, so now we just assign a value based on the list marker.
- Use integral values for w:tblW (#7141).
Jira writer (Albert Krewinkel):
- Block quotes are only rendered as bq. if they do not contain a linebreak.
- Jira writer: improve div/panel handling. Include div attributes in panels, always render divs with class panel as panels, and avoid nesting of panels.
HTML writer: Add warnings on duplicate attribute values. This prevents emitting invalid HTML. Ultimately it would be good to prevent this in the types themselves, but this is better for now.
Org writer: Prevent unintended creation of ordered list items (#7132, Albert Krewinkel). Adjust line wrapping if default wrapping would cause a line to be read as an ordered list item.
JATS templates: support 'equal-contrib' attrib for authors (Albert Krewinkel). Authors who contributed equally to a paper may be marked with equal-contrib.
reveal.js template: replace JS comment with HTML (#7154, Florian Kohrt).
Text.Pandoc.Logging: Add DuplicateAttribute constructor to LogMessage. [API change]
Use -j4 for linux release build. This speeds up the build dramatically on arm.
cabal.project: remove ghcoptions. Move flags to top level, so they can be set differently on the command line.
Require latest texmath, skylighting, citeproc, jira-wiki-markup. (The latest skylighting fixes a bad bug with Haskell syntax highlighting.) Narrow version bounds for texmath, skylighting, and citeproc, since the test output depend on them.
Use doclayout 0.3.0.2. This significantly reduces the time and memory needed to compile pandoc.
Use foldl' instead of foldl everywhere.
Update bounds for random (#7156, Alexey Kuleshevich).
Remove uses of some partial functions.
Don't bake in a larger stack size for the executable.
Test improvements:
- Use getExecutablePath from base, avoiding the dependency on executable-path.
- Factor out setupEnvironment in Helpers, to avoid code duplication.
- Fix finding of data files by setting teh pandoc_datadir environment variable when we shell out to pandoc. This avoids the need to use --data-dir for the tests, which caused problems finding pandoc.lua when compiling without the embed_data_files flag (#7163).
Benchmark improvements:
- Build +RTS -A8m -RTS into default ghc-options for benchmark. This is necessary to get accurate benchmark results; otherwise we are largely measuring garbage collecting, some not related to the current benchmark.
- Allow specifying BASELINE file in 'make bench' for comparison (otherwise the latest benchmark is chosen by default).
- Force readFile in benchmarks early (Bodigrim).
CONTRIBUTING: suggest using a cabal.project.local file (#7153, Albert Krewinkel).
Add ghcid-test to Makefile. This loads the test suite in ghcid.

pandoc 2.12 (2021-03-08)

--resource-path now accumulates if specified multiple times (#6152). Resource paths specified later on the command line are prepended to those specified earlier. Thus, --resource-path foo --resource-path bar:baz is equivalent to --resource-path bar:bas:foo. (The previous behavior was for the last --resource-path to replace all the rest.) resource-path in defaults files behaves the same way: it will be prepended to the resource path set by earlier command line options or defaults files. This change facilitates the use of multiple defaults files: each can specify a directory containing resources it refers to without clobbering the resource paths set by the others.
Allow defaults files to refer to the home directory, the user data directory, and the directory containing the defaults file itself (#5871, #5982, #5977). In fields that expect file paths (and only in these fields),
- ${VARIABLE} will expand to the value of the environment variable VARIABLE (and in particular ${HOME} will expand to the path of the home directory). A warning will be raised for undefined variables.
- ${USERDATA} will expand to the path of the user data directory in force when the defaults file is being processed.
- ${.} will expand to the directory containing the defaults file. (This allows default files to be placed in a directory containing resources they make use of.)
When downloading content from URL arguments, be sensitive to the character encoding (#5600). We can properly handle UTF-8 and latin1 (ISO-8859-1); for others we raise an error. Fall back to latin1 if no charset is given in the mime type and UTF-8 decoding fails.
Allow abbreviations that don't end in a period to be specified using --abbreviations (#7124).
Add new unexported module Text.Pandoc.XML.Light, as well as Text.Pandoc.XML.Light.Types, Text.Pantoc.XML.Light.Proc, Text.Pandoc.XML.Light.Output. (Closes #6001, #6565, #7091).

This module exports definitions of Element and Content that are isomorphic to xml-light's, but with Text instead of String. This allows us to keep most of the code in existing readers that use xml-light, but avoid lots of unnecessary allocation.

We also add versions of the functions from xml-light's Text.XML.Light.Output and Text.XML.Light.Proc that operate on our modified XML types, and functions that convert xml-light types to our types (since some of our dependencies, like texmath, use xml-light).

We export functions that use xml-conduit's parser to produce an Element or [Content]. This allows existing pandoc code to use a better parser without much modification.

The new parser is used in all places where xml-light's parser was previously used. Benchmarks show a significant performance improvement in parsing XML-based formats (with docbook, opml, jats, and docx almost twice as fast, odt and fb2 more than twice as fast).

In addition, the new parser gives us better error reporting than xml-light. We report XML errors, when possible, using the new PandocXMLError constructor in PandocError.

These changes revealed the need for some changes in the tests. The docbook-reader.docbook test lacked definitions for the entities it used; these have been added. And the docx golden tests have been updated, because the new parser does not preserve the order of attributes.
DocBook reader:
- Avoid expensive tree normalization step, as it is not necessary with the new XML parser.
- Support informalfigure (#7079) (Nils Carlson).
Docx reader:
- Use Map instead of list for Namespaces. This gives a speedup of about 5-10%. With this and the XML parsing changes, the docx reader is now about twice as fast as in the previous release.
HTML reader:
- Small performance tweaks.
- Also, remove exported class NamedTag(..) [API change]. This was just intended to smooth over the transition from String to Text and is no longer needed.
- As a result, the functions isInlineTag and isBlockTag are no longer polymorphic; they apply to a Tag Text [API change].
- Do a lookahead to find the right parser to use. This takes benchmarks from 34ms to 23ms, with less allocation.
- Fix bad handling of empty src attribute in iframe (#7099). If src is empty, we simply skip the iframe. If src is invalid or cannot be fetched, we issue a warning nd skip instead of failing with an error.
JATS reader:
- Avoid tree normalization, which is no longer necessary given the new XML parser.
LaTeX reader:
- Don't export tokenize, untokenize [API change]. These are internal implementation details, which were only exported for testing. They don't belong in the public API.
- Improved efficiency of the parser. With these changes the reader is almost twice as fast as in the last release in our benchmarks.
- Code cleanup, removing some unnecessary things.
- Rewrite withRaw so it doesn't rely on fragile assumptions about token positions (which break when macros are expanded) (#7092). This requires the addition of sEnableWithRaw and sRawTokens in LaTeXState, and a new combinator disablingWithRaw to disable collecting of raw tokens in certain contexts. Add parseFromToks to Text.Pandoc.Readers.LaTeX.Parsing. Fix parsing of single character tokens so it doesn't mess up the new raw token collecting. These changes slightly increase allocations and have a small performance impact.
- Handle some bibtex/biblatex-specific commands that used to be dealt with in pandoc-citeproc (#7049).
- Optimize satisfyTok, avoiding unnecessary macro expansion steps. Benchmarks after this change show 2/3 of the run time and 2/3 of the allocation of the Feb. 10 benchmarks.
- Removed sExpanded in state. This isn't actually needed and checking it doesn't change anything.
- Improve braced'. Remove the parameter, have it parse the opening brace, and make it more efficient.
- Factor out pieces of the LaTeX reader to make the module smaller. This reduces memory demands when compiling. Created Text.Pandoc.Readers.{LaTeX,Math,Citation,Table,Macro,Inline}. Changed Text.Pandoc.Readers.LaTeX.SIunitx to export a command map instead of individual commands.
- Handle table cells containing & in \verb (#7129).
Make Text.Pandoc.Readers.LaTeX.Types an unexported module [API change].
Markdown reader:
- Improved handling of mmd link attributes in references (#7080). Previously they only worked for links that had titles.
- Improved efficiency of the parser (benchmarks show a 15% speedup).
OPML reader:
- Avoid tree normalization, which is no longer necessary with the new XML parser.
ODT reader:
- Finer-grained errors on parse failure (#7091).
- Give more information if the zip container can't be unpacked.
Org reader:
- Support task_lists extension (Albert Krewinkel, #6336).
- Fix bug in org-ref citation parsing (Albert Krewinkel, #7101). The org-ref syntax allows to list multiple citations separated by comma. Previously commas were accepted as part of the citation id, so all citation lists were parsed as one single citation.
RST reader:
- Use getTimestamp instead of getCurrentTime to fetch timestamp. Setting SOURCE_DATE_EPOCH will allow reproducible builds.
- RST reader: fix handling of header in CSV tables (#7064). The interpretation of this line is not affected by the delim option.
Jira reader:
- Modified the Doc parser to skip leading blank lines. This fixes parsing of documents which start with multiple blank lines (Albert Krewinkel, #7095).
- Prevent URLs within link aliases to be treated as autolinks (Albert Krewinkel, #6944).
Text.Pandoc.Shared
- Remove formerly exported functions that are no longer used in the code base: splitByIndices, splitStringByIndicies, substitute, and underlineSpan (which had been deprecated in April 2020) [API change].
- Export handleTaskListItem (Albert Krewinkel) [API change].
- Change defaultUserDataDirs to defaultUserDataDir [API change]. We determine what is the default user data directory by seeing whether the XDG directory and/or legacy directory exist.
BibTeX writer:
- BibTeX writer: use doclayout and doctemplate. This change allows bibtex/biblatex output to wrap as other formats do, depending on the settings of --wrap and --columns (#7068).
CSL JSON writer:
- Output [] if no references in input, instead of raising a PandocAppError as before.
Docx writer:
- Use getTimestamp instead of getCurrentTime for timestamp. Setting SOURCE_DATE_EPOCH will allow reproducible builds.
EPUB writer:
- Use getTimestamp instead of getCurrentTime for timestamp. Setting SOURCE_DATE_EPOCH will allow reproducible builds (#7093). This does not suffice to fully enable reproducible in EPUB, since a unique id is still being generated for each build.
- Support belongs-to-collection metadata (#7063) (Nick Berendsen).
JATS writer:
- Escape special chars in reference elements (Albert Krewinkel). Prevents the generation of invalid markup if a citation element contains an ampersand or another character with a special meaning in XML.
Jira writer:
- Use Span identifiers as anchors (Albert Krewinkel).
- Use {noformat} instead of {code} for unknown languages (Albert Krewinkel). Code blocks which are not marked as a language supported by Jira are rendered as preformatted text via {noformat} blocks.
LaTeX writer:
- Adjust hypertargets to beginnings of paragraphs (#7078). Use \vadjust pre so that the hypertarget takes you to the beginning of the paragraph rather than one line down. This makes a particular difference for links to citations using --citeproc and link-citations: true.
- Change BCP47 lang tag from jp to ja (Mauro Bieg, #7047).
- Use function instead of map for accent lookup (should be more efficient).
- Split the module to make it easier to compile on low-memory systems: added Text.Pandoc.Writers.LaTeX.{Util,Citation,Lang}.
Markdown writer:
- Handle math right before digit. We insert an HTML comment to avoid a $ right before a digit, which pandoc will not recognize as a math delimiter.
- Split the module to make it easier to compile on low-memory systems: added Text.Pandoc.Writers.Markdown.{Types,Inline}.
ODT writer:
- Use getTimestamp instead of getCurrentTime for timestamp. Setting SOURCE_DATE_EPOCH will allow reproducible builds.
- Update default ODT style (Lorenzo). Previously, the "First paragraph" style inherited from "Standard" but not from "Text body." Now it is adjusted to inherit from "Text body", to avoid some ugly spacing issues. It may be necessary to update a custom reference.odt in light of this change.
Org writer:
- Support task_lists extension (Albert Krewinkel, #6336).
Pptx writer:
- Use getTimestamp instead of getCurrentTime for timestamp. Setting SOURCE_DATE_EPOCH will allow reproducible builds.
JATS templates: tag author.name as string-name (Albert Krewinkel). The partitioning the components of a name into surname, given names, etc. is not always possible or not available. Using author.name allows to give the full name as a fallback to be used when author.surname is not available.
Add default templates for bibtex and biblatex, so that the variables header-include, include-before, include-after (or alternatively the command line options --include-in-header, --include-before-body, --include-after-body) may be used.
LaTeX template:
- Update to iftex package (#7073) (Andrew Dunning)
- Wrap url colours in braces (#7121) (Loïc Grobol).
revealjs template: Add 'center' option for vertical slide centering. (maurerle, #7104).
Text.Pandoc.XML: Improve efficiency of fromEntities.
Text.Pandoc.MIME
- Add exported function getCharset [API change].
Text.Pandoc.UTF8: change IO functions to return Text, not String [API change]. This affects readFile, getContents, writeFileWith, writeFile, putStrWith, putStr, putStrLnWith, putStrLn. hPutStrWith, hPutStr, hPutStrLnWith, hPutStrLn, hGetContents. This avoids the need to uselessly create a linked list of characters when emiting output.
Text.Pandoc.App
- Add parseOptionsFromArgs [API change, new exported function].
- Add fields for CSL options to Opt [API change]: optCSL, optbibliography, optCitationAbbreviations.
Text.Pandoc.Citeproc.BibTeX
- Text.Pandoc.Citeproc.writeBibTeXString now returns Doc Text instead of Text (#7068).
- Correctly handle pages (= page in CSL) (#7067).
- Correctly handle BibLaTeX langid (= language in CSL, #7067).
- In BibTeX output, protect foreign titles since there's no language field (#7067).
- Clean up BibTeX parsing (#7049). Previously there was a messy code path that gave strange results in some cases, not passing through raw tex but trying to extract a string content. This was an artefact of trying to handle some special bibtex-specific commands in the BibTeX reader. Now we just handle these in the LaTeX reader and simplify parsing in the BibTeX reader. This does mean that more raw tex will be passed through (and currently this is not sensitive to the raw_tex extension; this should be fixed).
Text.Pandoc.Citeproc.MetaValue
- Correctly parse "raw" date value in markdown references metadata. (See jgm/citeproc#53.)
Text.Pandoc.Citeproc
- Use https URLs for links (Salim B, #7122).
Text.Pandoc.Class
- Add getTimestamp [API change]. This attempts to read the SOURCE_DATE_EPOCH environment variable and parse a UTC time from it (treating it as a unix date stamp, see https://reproducible-builds.org/specs/source-date-epoch/). If the variable is not set or can't be parsed as a unix date stamp, then the function returns the current date.
Text.Pandoc.Error
- Add PandocUnsupportedCharsetError constructor for PandocError [API change].
- Export renderError [API change].
- Refactor handleError to use renderError. This allows us render error messages without exiting.
Text.Pandoc.Extensions
- Ext_task_lists is now supported by org (and turned on by default) (Albert Krewinkel, #6336).
- Remove Ext_fenced_code_attributes from allowed commonmark attributes (#7097). This attribute was listed as allowed, but it didn't actually do anything. Use attributes for code attributes and more.
Lua subsystem:
- Always load built-in Lua scripts from default data-dir (Albert Krewinkel). The Lua modules pandoc and pandoc.List are now always loaded from the system's default data directory. Loading from a different directory by overriding the default path, e.g. via --data-dir, is no longer supported to avoid unexpected behavior and to address security concerns.
- Add module "pandoc.path" (Albert Krewinkel, #6001, #6565). The module allows to work with file paths in a convenient and platform-independent manner.
- Use strict evaluation when retrieving AST value from the stack (Albert Krewinkel, #6674).
Text.Pandoc.PDF
- Disable smart extension when building PDF via LaTeX. This is to prevent accidental creation of ligatures like ?` and !` (especially in languages with quotations like German), and similar ligature issues. (See jgm/citeproc#54.)
Text.Pandoc.CSV:
- Fix parsing of unquoted values (#7112). Previously we didn't allow unescaped quotes in unquoted values, but they are allowed in CSV.
Test suite:
- Use a more robust method for testing the executable. Many of our tests require running the pandoc executable. This is problematic for a few different reasons. First, cabal-install will sometimes run the test suite after building the library but before building the executable, which means the executable isn't in place for the tests. One can work around that by first building, then building and running the tests, but that's fragile. Second, we have to find the executable. So far, we've done that using a function findPandoc that attempts to locate it relative to the test executable (which can be located using findExecutablePath). But the logic here is delicate and work with every combination of options. To solve both problems, we add an --emulate option to the test-pandoc executable. When --emulate occurs as the first argument passed to test-pandoc, the program simply emulates the regular pandoc executable, using the rest of the arguments (after --emulate). Thus, test-pandoc --emulate -f markdown -t latex is just like pandoc -f markdown -t latex. Since all the work is done by library functions, implementing this emulation just takes a couple lines of code and should be entirely reliable. With this change, we can test the pandoc executable by running the test program itself (locatable using findExecutablePath) with the --emulate option. This removes the need for the fragile findPandoc step, and it means we can run our integration tests even when we're just building the library, not the executable. [Note: part of this change involved simplifying some complex handling to set environment variables for dynamic library paths. I have tested a build with --enable-dynamic-executable, and it works, but further testing may be needed.]
- Print accurate location if a test fails (Albert Krewinkel). Ensures that tasty-hunit reports the location of the failing test instead of the location of the helper test function.
Documentation: Update URLs and use https where possible (#7122, Salim B).
Add doc/libraries.md, a description of libraries that support pandoc.
MANUAL.txt
- MANUAL: block-level formatting is not allowed in line blocks (#7107).
- Clarify tex_math_dollars extension. Note that no blank lines are allowed between the delimiters in display math.
- Add MANUAL section on reproducible builds.
- Document no template fallback for absolute path (#7077, Nixon Enraght-Moony.)
- Improve docs for cite-method.
- Update README and man page.
Makefile: in make bench, create CSV files for comparison and compare against previous benchmark run. Add timestamp to CSV filenames.
cabal.project: don't explicitly set -trypandoc. If we do, this can't be overridden on the cabal command line.
doc/lua-filters.md: improve documentation for pandoc.mediabag.insert, pandoc.mediabag.fetch, directory, normalize (Albert Krewinkel).
Allow base64-bytestring-1.2.* (Dmitrii Kovanikov)
Require jira-wiki-markup 1.3.3 (Albert Krewinkel)
Require citeproc 0.3.0.8, which correctly titlecases when titles contain non-ASCII characters.
Use skylighting 0.10.4. This version of skylighting uses xml-conduit rather than hxt. This speeds up parsing of XML syntax definitions fourfold, and removes four packages from pandoc's dependency graph: hxt-charproperties, hxt-unicode, hxt-regex-xmlschema, hxt.
Add script tools/parseTimings.pl to help pin down which modules take the most time and memory to compile.
Avoid unnecessary use of NoImplicitPrelude pragma (#7089) (Albert Krewinkel)
Benchmarks
- Use the lighter-weight tasty-bench instead of criterion.
- Run writer benchmarks for binary formats too.
- Alphabetize benchmarks.
- Don't run benchmarks for bibliography formats (yet; we need a special input for them).
- Show allocation data
- Clean up benchmark code.
- Allow specifying patterns using `-p blah'.
trypandoc: add 2 second timeout.
Use -split-sections in creating linux release binary. This reduces executable size significantly (by about 30%).
Remove weigh-pandoc. It's not really useful any more, now that our regular benchmarks include data on allocation.
Improve linux package build process and add script to automate building an arm64 binary package.

pandoc 2.11.4 (2021-01-22)

Add biblatex, bibtex as output formats (closes #7040).
Recognize more extensions as markdown by default (#7034): mkdn, mkd, mdwn, mdown, Rmd.
Implement defaults file inheritance (#6924, David Martschenko). Allow defaults files to inherit options from other defaults files by specifying them with the following syntax: defaults: [list of defaults files or single defaults file].
Fix infinite HTTP requests when writing epubs from URL source (#7013). Due to a bug in code added to avoid overwriting the cover image if it had the form fileX.YYY, pandoc made an endless sequence of HTTP requests when writing epub with input from a URL.
Org reader:
- Allow multiple pipe chars in todo sequences (Albert Krewinkel, #7014). Additional pipe chars, used to separate "action" state from "no further action" states, are ignored. E.g., for the following sequence, both DONE and FINISHED are states with no further action required: #+TODO: UNFINISHED | DONE | FINISHED.
- Restructure output of captioned code blocks (Albert Krewinkel, #6977). The Div wrapper of code blocks with captions now has the class "captioned-content". The caption itself is added as a Plain block inside a Div of class "caption". This makes it easier to write filters which match on captioned code blocks. Existing filters will need to be updated.
- Mark verbatim code with class verbatim (Dimitri Sabadie, #6998).
LaTeX reader:
- Handle filecontents environment (#7003).
- Put contents of unknown environments in a Div when raw_tex is not enabled (#6997). (When raw_tex is enabled, the whole environment is parsed as a raw block.) The class name is the name of the environment. Previously, we just included the contents without the surrounding Div, but having a record of the environment's boundaries and name can be useful.
Mediawiki reader:
- Allow space around storng/emph delimiters (#6993).
New module Text.Pandoc.Writers.BibTeX, exporting writeBibTeX and writeBibLaTeX. [API change]
LaTeX writer:
- Revert table line height increase in 2.11.3 (#6996). In 2.11.3 we started adding \addlinespace, which produced less dense tables. This wasn't an intentional change; I misunderstood a comment in the discussion leading up to the change. This commit restores the earlier default table appearance. Note that if you want a less dense table, you can use something like \def\arraystretch{1.5} in your header.
EPUB writer:
- Adjust internal links to identifiers defined in raw HTML sections after splitting into chapters (#7000).
- Recognize Format "html4", Format "html5" as raw HTML.
- Adjust internal links to images, links, and tables after splitting into chapters. Previously we only did this for Div and Span and Header elements (see #7000).
Ms writer:
- Don't justify text inside table cells.
JATS writer:
- Use <element-citation> if element_citations extension is enabled (Albert Krewinkel).
- Fix citations (Albert Krewinkel, #7018). By default we use formatted citations.
- Ensure that <disp-quote> is always wrapped in <p> (#7041).
Markdown writer:
- Cleaned up raw formats. We now react appropriately to gfm, commonmark, and commonmark_x as raw formats.
RST writer:
- Fix bug with dropped content from inside spans with a class in some cases (#7039).
Docx writer:
- Handle table header using styles (#7008). Instead of hard-coding the border and header cell vertical alignment, we now let this be determined by the Table style, making use of Word's "conditional formatting" for the table's first row. For headerless tables, we use the tblLook element to tell Word not to apply conditional first-row formatting.
Commonmark writer:
- Implement start number on ordered lists (#7009). Previously they always started at 1, but according to the spec the start number is respected.
HTML writer:
- Fix implicit_figure at end of footnotes (#7006).
ConTeXt template: Remove \setupthinrules from default template. The width parameter this used is not actually supported, and the command didn't do anything.
Text.Pandoc.Extensions:
- Add Ext_element_citations constructor (Albert Krewinkel).
Text.Pandoc.Citeproc.BibTeX: New unexported function writeBibtexString.
Text.Pandoc.Citeproc:
- Use finer grained imports (Albert Krewinkel).
- Factor out and export getStyle [API change].
- Export getReferences [API change, #7106].
- Factor out getLang.
Text.Pandoc.Parsing: modify gridTableWith' for headerless tables. If the table lacks a header, the header row should be an empty list. Previously we got a list of empty cells, which caused an empty header to be emitted instead of no header. In LaTeX/PDF output that meant we got a double top line with space between.
ImageSize: use viewBox for SVG if no length, width attributes (#7045). This change allows pandoc to extract size information from more SVGs.
Add simple default.nix.
Use commonmark 0.1.1.3.
Use citeproc 0.3.0.5.
Update default CSL to use latest chicago-author-date.csl.
CONTRIBUTING.md: add note on GNU xargs.
MANUAL.txt:
- Update description of -L/--lua-filter.
- Document use of citations in note styles (#6828).

pandoc 2.11.3.2 (2020-12-29)

HTML reader: use renderTags' from Text.Pandoc.Shared (Albert Krewinkel). A side effect of this change is that empty <col> elements are written as self-closing tags in raw HTML blocks.
Asciidoc writer: Add support for writing nested tables (#6972, timo-a). Asciidoc supports one level of nesting. If deeper tables are to be written, they are omitted and a warning is issued.
Docx writer: fix nested tables with captions (#6983). Previously we got unreadable content, because docx seems to want a <w:p> element (even an empty one) at the end of every table cell.
Powerpoint writer: allow arbitrary OOXML in raw inline elements (Albert Krewinkel). The raw text is now included verbatim in the output. Previously is was parsed into XML elements, which prevented the inclusion of partial XML snippets.
LaTeX writer: support colspans and rowspans in tables (#6950, Albert Krewinkel). Note that the multirow package is needed for rowspans. It is included in the latex template under a variable, so that it won't be used unless needed for a table.
HTML writer: don't include p tags in CSL bibliography entries (#6966). Fixes a regression in 2.11.3.
Add meta-description variable to HTML templates (#6982). This is populated by the writer by stringifying the description field of metadata (Jerry Sky). The description meta tag will make the generated HTML documents more complete and SEO-friendly.
Citeproc: fix handling of empty URL variables (DOI, etc.). The linkifyVariables function was changing these to links which then got treated as non-empty by citeproc, leading to wrong results (e.g. ignoring nonempty URL when empty DOI is present). See jgm/citeproc#41.
Use citeproc 0.3.0.3. Fixes an issue in author-only citations when both an author and translator are present, and an issue with citation group delimiters.
Require texmath 0.12.1. This improves siunitx support in math, fixes bugs with \*mod family operators and arrays, and avoids italicizing symbols and operator names in docx output.
Ensure that the perl interpreter used for filters with .pl extension (wuffi).
MANUAL: note that textarea content is never parsed as Markdown (Albert Krewinkel).

pandoc 2.11.3.1 (2020-12-18)

Added some missing files to extra-source-files and data files, so they are included in the sdist tarball. Closes #6961. Cleaned up some extraneous data and test files, and added a CI check to ensure that the test and data files included in the sdist match what is in the git repository.
Use citeproc 0.3.0.1, which avoids removing nonbreaking space at the end of the initialize-with attribute. (Some journals require nonbreaking space after initials, and this makes that possible.)

pandoc 2.11.3 (2020-12-17)

With --bibliography (or bibliography in metadata), a URL may now be provided, and pandoc will fetch the resource. In addition, if a file path is provided and it is not found relative to the working directory, the resource path will be searched (#6940).
Add sourcepos extension for commonmark, gfm, commonmark_x (#4565). With the sourcepos extension set set, data-pos attributes are added to the AST by the commonmark reader. No other readers are affected. The data-pos attributes are put on elements that accept attributes; for other elements, an enlosing Div or Span is added to hold the attributes.
Change extensions for commonmark_x: replace auto_identifiers with gfm_auto_identifiers (#6863). commonmark_x never actually supported auto_identifiers (it didn't do anything), because the underlying library implements gfm-style identifiers only. Attempts to add the auto_identifiers extension to commonmark will now fail with an error.
HTML reader:
- Split module into several submodules (Albert Krewinkel). Reducing module size should reduce memory use during compilation.
- Support advanced table features (Albert Krewinkel): block level content in captions, row and colspans, body headers, row head columns, footers, attributes.
- Disable round-trip testing for tables. Information for cell alignment in a column is not preserved during round-trips (Albert Krewinkel).
- Allow finer grained options for tag omission (Albert Krewinkel).
- Simplify list attribute handling (Albert Krewinkel).
- Pay attention to lang attributes on body element (#6938). These (as well as lang attributes on the html element) should update lang in metadata.
- Retain attribute prefixes and avoid duplicates (#6938). Previously we stripped attribute prefixes, reading xml:lang as lang for example. This resulted in two duplicate lang attributes when xml:lang and lang were both used. This commit causes the prefixes to be retained, and also avoids invald duplicate attributes.
Commonmark reader:
- Refactor specFor.
- Set input name to "" to avoid clutter in sourcepos output.
Org reader:
- Parse #+LANGUAGE into lang metadata field (#6845, Albert Krewinkel).
- Preserve targets of spurious links (#6916, Albert Krewinkel). Links with (internal) targets that the reader doesn't know about are converted into emphasized text. Information on the link target is now preserved by wrapping the text in a Span of class spurious-link, with an attribute target set to the link's original target. This allows to recover and fix broken or unknown links with filters.
DocBook reader:
- Table text width support (#6791, Nils Carlson). Table width in relation to text width is not natively supported by docbook but is by the docbook fo stylesheets through an XML processing instruction, <?dbfo table-width="50%"?>.
LaTeX reader:
- Improve parsing of command options (#6869, #6873). In cases where we run into trouble parsing inlines til the closing ], e.g. quotes, we return a plain string with the option contents. Previously we mistakenly included the brackets in this string.
- Preserve center environment (#6852, Igor Pashev). The contents of the center environment are put in a Div with class center.
- Don't parse \rule with width 0 as horizontal rule. These are sometimes used as spacers in LaTeX.
- Don't apply theorem default styling to a figure inside (#6925). If we put an image in italics, then when rendering to Markdown we no longer get an implicit figure.
Dokuwiki reader:
- Handle unknown interwiki links better (#6932). DokuWiki lets the user define his own Interwiki links. Previously pandoc reacted to these by emitting a google search link, which is not helpful. Instead, we now just emit the full URL including the wikilink prefix, e.g. faquk>FAQ-mathml. This at least gives users the ability to modify the links using filters.
Markdown writer:
- Properly handle boolean values in writing YAML metadata (#6388).
- Ensure that a new csl-block begins on a new line (#6921). This just looks better and doesn't affect the semantics.
RST writer:
- Better image handling (#6948). An image alone in its paragraph (but not a figure) is now rendered as an independent image, with an alt attribute if a description is supplied. An inline image that is not alone in its paragraph will be rendered, as before, using a substitution. Such an image cannot have a "center", "left", or "right" alignment, so the classes align-center, align-left, or align-right are ignored. However, align-top, align-middle, align-bottom will generate a corresponding align attribute.
Docx writer:
- Keep raw openxml strings verbatim (#6933, Albert Krewinkel).
- Use Content instead of Element. This allows us to inject raw OpenXML into the document without reparsing it into an Element, which is necessary if you want to inject an open tag or close tag.
- Fix bullets/lists indentation, so that the first level is slightly indented to the right instead of right on the margin (cholonam).
- Support bold and italic in "complex script" (#6911). Previously bold and italics didn't work properly in LTR text. This commit causes the w:bCs and w:iCs attributes to be used, in addition to w:b and w:i, for bold and italics respectively.
ICML writer:
- Fix image bounding box for custom widths/heighta (Mauro Bieg, #6936).
LaTeX writer:
- Improve table spacing (#6842, #6860). Remove the \strut that was added at the end of minipage environments in cells. Replace \tabularnewline with \\ \addlinespace.
- Improve calculation of column spacing (#6883).
- Extract table handling into separate module (Albert Krewinkel).
- Fix bug with nested csl- display Spans (#6921).
- Improve longtable output (#6883). Don't create minipages for regular paragraphs. Put width and alignment information in the longtable column descriptors.
OpenDocument writer:
- Support for table width as a percentage of text width (#6792, Nils Carson).
- Implement Div and Span ident support (#6755, Nils Carson). Spans and Divs containing an ident in the Attr will become bookmarks or sections with idents in OpenDocument format.
- Add two extensions, xrefs_name and xrefs_number (#6774, Nils Carlson). Links to headings, figures and tables inside the document are substituted with cross-references that will use the name or caption of the referenced item for xrefs_name or the number for xrefs_number. For the xrefs_number to be useful heading numbers must be enabled in the generated document and table and figure captions must be enabled using for example the native_numbering extension. In order for numbers and reference text to be updated the generated document must be refreshed.
JATS writer:
- Support advanced table features (Albert Krewinkel).
- Support author affiliations (#6687, Albert Krewinkel).
Docbook writer:
- Use correct id attribute consistently (Jan Tojnar). DocBook5 should always use xml:id instead of id.
- Handle admonition titles better (Jan Tojnar). Docbook reader produces a Div with title class for <title> element within an “admonition” element. Markdown writer then turns this into a fenced div with title class attribute. Since fenced divs are block elements, their content is recognized as a paragraph by the Markdown reader. This is an issue for Docbook writer because it would produce an invalid DocBook document from such AST – the <title> element can only contain “inline” elements. Handle this special case separately by unwrapping the paragraph before creating the <title> element.
- Add XML namespaces to top-level elements (#6923, Jan Tojnar). Previously, we only added xmlns attributes to chapter elements, even when running with --top-level-division=section. These namespaces are now added to part and section elements too, when they are the selected top-level divisions. We do not need to add namespaces to documents produced with --standalone flag, since those will already have xmlns attribute on the root element in the template.
HTML writer:
- Fix handling of nested csl- display spans (#6921). Previously inner Spans used to represent CSL display attributes were not rendered as div tags as intended.
EPUB writer:
- Include title page in landmarks (#6919). Note that the toc is also included if --toc is specified.
- Add frontmatter type on body element for nav.xhtml (#6918).
EPUB templates: use preserveAspectRatio="xMidYMid" for cover image (#6895, Shin Sang-jae). This change affects both the epub2 and the epub3 templates. It avoids distortion of the cover image by requiring that the aspect ratio be preserved.
LaTeX template:
- Include csquotes package if csquotes variable set.
- Put back amssymb. We need it for checkboxes in todo lists, and maybe for other things. In this location it seems compatible with the cases that prompted #6469 and PR #6762.
- Disable language-specific shorthands in babel (#6817, #6887). Babel defines "shorthands" for some languages, and these can produce unexpected results. For example, in Spanish, 1.22 gets rendered as 122, and et~al. as etal. One would think that babel's shorthands=off option (which we were using) would disable these, but it doesn't. So we remove shorthands=off and add some code that redefines the shorthands macro. Eventually this will be fixed in babel, I hope, and we can revert to something simpler.
JATS template: allow array of persistent institute ids in pid (Albert Krewinkel).
Text.Pandoc.Parsing: minor code and efficiency improvements.
Text.Pandoc.Extension:
- Add Ext_sourcepos constructor for Extension [API change].
- Add Ext_xrefs_name and Ext_xrefs_number constructors for Extension (Nils Carson) [API change].
Text.Pandoc.Citeproc:
- Fix truncation of [Citation] list in Cite inside footnotes (#6890). This affected author-in-text citations in footnotes. It didn't cause problems for the printed output, but for filters that expected the citation id and other information.
- Allow the use of both inline and external references (#6951), as with pandoc-citeproc. References defined in the document's metadata take priority over references with the same id defined in an external bibliography.
- Use fetchItem to get external bibliography (#6940).
- Ensure that BCP47 lang codes can be used. We ignore the variants and just use the base lang code and country code when passing off to citeproc.
- Citeproc BibTeX parser: revert change in getRawField which was made (for reasons forgotten) when transferring this code from pandoc-citeproc. The change led to -- in URLs being interpreted as en-dashes, which is unwanted (#6874).
Text.Pandoc.ImageSize:
- Default to DPI 72 if the format specifies DPI of 0 (#6880). This shouldn't happen, in general, but it can happen with JPEGs that don't conform to the spec. Having a DPI of 0 will blow up size calculations (division by 0).
- ImageSize: use JuicyPixels to determine size for png, jpeg, and gif, instead of doing our own binary parsing (#6936). This gives more reliable results.
Text.Pandoc.CSS:
- Remove foldOrElse (internal module) (Albert Krewinkel).
Use skylighting 0.10.2 (#6625).
Use citeproc 0.3. This fixes issues with references with duplicate ids (jgm/citeproc#36).
Use doctemplates 0.9. This fixes issues with boolean metadata values in the Markdown writer (#6388) and in meta-json (#6650). It also fixes issues with nested for loops in templates.
Add translations zh-Hans.yaml and zh-Hant.yaml (#6904, #6909, Kolen Cheung, taotieren).
Add tests: True to cabal.project. This fixes some CI failures for cabal.
Normalize test/tables/*.native (#6888, Kolen Cheung).
Move executable to app directory to avoid problems with cabal repl.
CONTRIBUTING: add section "How can I help?" (#6892, Albert Krewinkel). Also adds a paragraph aimed at highlighting the importance of feature maintenance.
MANUAL: Document that --number-sections works in ms (#6935).

pandoc 2.11.2 (2020-11-19)

Default to using ATX (##-style) headings for Markdown output (#6662, Aner Lucero). Previously we used Setext (underlined) headings by default for levels 1--2.
Add option --markdown-headings=atx|setext, and deprecate --atx-headers (#6662, Aner Lucero).
Support markdown-headings in defaults files.
Fix corner case in YAML metadata parsing (#6823). Previously YAML metadata would sometimes not get recognized if a field ended with a newline followed by spaces.
--self-contained: increase coverage (#6854). Previously we only self-contained attributes for certain tag names (img, embed, video, input, audio, source, track, section). Now we self-contain any occurrence of src, data-src, poster, or data-background-image, on any tag; and also href on link tags.
Markdown reader:
- Fix detection of locators following in-text citations. Prevously, if we had @foo [p. 33; @bar], the p. 33 would be incorrectly parsed as a prefix of @bar rather than a suffix of @foo.
- Improve period suppression algorithm for citations in notes in note citation styles (#6835).
- Don't increment stateNoteNumber for example list references. This helps with #6836 (a bug in which example list references disturb calculation of citation note number and affect when ibid is triggered).
LaTeX reader:
- Move getNextNumber from Readers.LaTeX to Readers.LaTeX.Parsing.
- Fix negative numbers in siunitx commands. A change in pandoc 2.11 broke negative numbers, e.g. \SI{-33}{\celcius} or \num{-3}. This fixes the regression.
DocBook reader: drop period in formalpara title and put it in a div with class formalpara-title, so that people can reformat with filters (#6562).
Man reader: improve handling of .IP (#6858). We now better handle .IP when it is used with non-bullet, non-numbered lists, creating a definition list. We also skip blank lines like groff itself.
Bibtex reader: fall back on en-US if locale for LANG not found. This reproduces earlier pandoc-citeproc behavior (jgm/citeproc#26).
JATS writer:
- Wrap all tables (Albert Krewinkel). All <table> elements are put inside <table-wrap> elements, as the former are not valid as immediate child elements of <body>.
- Move Table handling to separate module (Albert Krewinkel). Adds two new unexported modules: Text.Pandoc.Writers.JATS.Types, Text.Pandoc.Writers.JATS.Table.
Org writer:
- Replace org #+KEYWORDS with #+keywords (TEC). As of ~2 years ago, lower case keywords became the standard (though they are handled case insensitive, as always).
- Update org supported languages and identifiers according to the current list contained in https://orgmode.org/worg/org-contrib/babel/languages/index.html (TEC).
Only use filterIpynbOutput if input format is ipynb (#6841). Before this change content could go missing from divs with class output, even when non-ipynb was being converted.
When checking reader/writer name, check base name now that we permit extensions on formats other than markdown.
Text.Pandoc.PDF: Fix changePathSeparators for Windows (#6173). Previously a path beginning with a drive, like C:\foo\bar, was translated to C:\/foo/bar, which caused problems. With this fix, the backslashes are removed.
Text.Pandoc.Logging:
- Add constructor ATXHeadingInLHS to LogMessage [API change].
- Add constructor EnvironmentVariableUndefined to LogMessage [API change].
Fix error that is given when people specify doc output (#6834, gison93).
LaTeX template: add a \break after parbox in CSLRightInline. This should fix spacing problems between entries with numeric styles. Also fix number of params on CSLReferences.
reveal.js template: Put quotes around controlsLayout, controlsBackArrows, and display, since these require strings. Add showSlideNumber, hashOneBasedIndex, pause.
Use citeproc 0.2. This fixes a bug with title case around parentheses.
pandoc.cabal: remove 'static' flag. This isn't really necessary and can be misleading (e.g. on macOS, where a fully static build isn't possible). cabal's new option --enable-executable-static does the same. On stack you can add something like this to the options for your executable in package.yaml:
```
ld-options: -static -pthread
```
Remove obsolete bibutils flag setting in linux/make_artifacts.sh.
Manual:
- Correct link-citation -> link-citations.
- Add a sentence about pagetitle for HTML (#6843, Alex Toldaiev).
INSTALL.md: Remove references to pandoc-citeproc (#6857).
CONTRIBUTING: describe hlint and how it's used (#6840, Albert Krewinkel).

pandoc 2.11.1.1 (2020-11-07)

Citeproc: improve punctuation in in-text note citations (#6813). Previously in-text note citations inside a footnote would sometimes have the final period stripped, even if it was needed (e.g. on the end of 'ibid').
Use citeproc 0.1.1.1. This improves the decision about when to use ibid in cases where citations are used inside a footnote (#6813).
Support nocase spans for csljson output.
Require latest commonmark, commonmark-extensions. This fixes a bug with autolink_bare_uris and commonmark.
LaTeX reader: better handling of \\ inside math in table cells (#6811).
DokuWiki writer: translate language names for code elements and improve whitespace (#6807).
MediaWiki writer: use syntaxhighlight tag instead of deprecated source for highlighted code (#6810). Also support startFrom attribute and numberLines.
Lint code in PRs and when committing to master (#6790, Albert Krewinkel).
doc/filters.md: describe technical details of filter invocations (#6815, Albert Krewinkel).

pandoc 2.11.1 (2020-11-03)

DocBook Reader: fix duplicate bibliography bug (#6773, Nils Carlson).
HTML reader:
- Parse contents of iframes (#6770).
- Parse inline svg as image unless raw_html is set in the reader (in which case the svg is passed through as raw HTML) (#6770).
LaTeX reader:
- Fix bug parsing macro arguments (#6796). If \cL is defined as \mathcal{L}, and \til as \tilde{#1}, then \til\cL should expand to \tilde{\mathcal{L}}, but pandoc was expanding it to \tilde\mathcal{L}. This is fixed by parsing the arguments in "verbatim mode" when the macro expands arguments at the point of use.
- Properly support optional (cite) argument for \blockquote from csquotes (#6802).
LaTeX writer: Improved calculation of table column widths. We now have LaTeX do the calculation, using \tabcolsep. So we should now have accurate relative column widths no matter what the text width. The default template has been modified to load the calc package if tables are used.
HTML writer: Fix duplicate "class" attribute for table rows (Andy Morris).
Text.Pandoc.Filter: allow shorter YAML representation of Citeproc (Albert Krewinkel). The map-based YAML representation of filters expects type and path fields. The path field had to be present for all filter types, but is not used for citeproc filters. The field can now be omitted when type is "citeproc", as described in the MANUAL.
Text.Pandoc.Error: Add PandocBibliographyError constructor for PandocError [API change]. This ensures that bibliography parsing errors generate messages that include the bibliography file name -- otherwise it can be quite mysterious where it is coming from.
Citeproc: properly handle csl field with data: URI (#6783). This is used with the JATS writer, so this fixes a regression in pandoc 2.11 with JATS output and citeproc.
Allow citation-abbreviations in defaults file.
JATS templates: ensure jats_publishing output is valid (Albert Krewinkel).
LaTeX template: Fix CSLRightInline, so that it does not run over the right margin.
HTML template: default CSS tweaks (Mauro Bieg and John MacFarlane).
- Fix margin before codeblock
- Add monobackgroundcolor variable, making the background color and padding of code optional.
- Ensure that backgrounds from highlighting styles take precedence over monobackgroundcolor
- Remove list markers from TOC
- Add margin-bottom where needed
- Remove italics from blockquote styling
- Change borders and spacing in tables to be more consistent with other output formats
- Style h5, h6
- Set font-size for print media to 12pt.
- Reduce interline space.
- Reduce interparagraph space.
- Reduce line width.
- Remove the special line-height: 1 for table cells.
- Remove the special line-height for pre.
- Ensure that there is a bit more space before a heading than after.
- Slightly reduced space after title header.
- Add CSS example to MANUAL
man template: Change comment that triggers tbl from .\"t to '\" t, as specified in groff_man(7) (#6803).
Use latest commonmark, commonmark-extensions. This fixes a bug with nested blocks in footnotes with the footnote extension to commonmark. See jgm/commonmark-hs#63.
Citeproc: use comma for in-text citations inside footnotes. When an author-in-text citation like @foo occurs in a footnote, we now render it with: AUTHOR NAME + COMMA + SPACE + REST. Previously we rendered: AUTHOR NAME + SPACE + "(" + REST + ")". This gives better results. Note that normal citations are still rendered in parentheses.
Use latest citeproc:
- citeproc no longer capitalizes notes, so we do it in pandoc when appropriate.
- Closes #6783.
Clarify manual on --track-changes (#6801).
Add doc/jats.md to document pandoc's handling of JATS (#6794, Albert Krewinkel).
Fix code example in lua-filters.md (#6795).

pandoc 2.11.0.4 (2020-10-21)

Commonmark writer: fix regression with fenced divs (#6768). Starting with 2.10.1, fenced divs no longer render with HTML div tags in commonmark output. This is a regression due to our transition from cmark-gfm. This commit fixes it.
Use released version of citeproc. (This fixes a mis-step in the 2.11.0.3 release, which is now deprecated.)
Use latest sylighting, with support for groovy.
Document that --html-q-tags requires the smart extension on the reader (#6766).

pandoc 2.11.0.3 (2020-10-20)

Use latest citeproc (closes #6765). This fixes a problem with author-in-text citations for references including both an author and an editor. Previously, both were included in the text, but only the author should be.
With --citeproc, ensure that the final period is removed when citations that occur in notes in note-based styles get put in parentheses. See jgm/citeproc#20.
Normalize rewritten image paths with --extract-media (#6761). This change will avoid mixed paths like this one when --extract-media is used with a Word file: ![](C:\Git\TIJ4\Markdown/media/image30.wmf). Instead we'll get ![](C:\Git\TIJ4\Markdownmediaimage30.wmf).
Modify --version output. Use space more efficiently and report the citeproc and ipynb versions, along with skylighting, texmath, and pandoc-types. Drop the word "default" before "user data directory."
DocBook reader: bibliomisc and anchor support (#6754, Nils Carlson). Also ensure that bibliodiv without a title no longer results in an empty Header.
ConTeXt template: adds \setupinterlinespace to fonts larger than normal (#6763, Denis Maier).
LaTeX template: Do not load amssymb if not needed (#6469, Angelo Peronio). See https://tex.stackexchange.com/a/549938.
Relax upper bound on hslua, allow hslua-1.3.* (Albert Krewinkel).
MANUAL:
- Improve explanation of "indent" variable (#6767, Cyrus Yip).
- Remove org from list of input formats supporting raw_tex (#6753, Nick Fleisher).

pandoc 2.11.0.2 (2020-10-15)

Fix handling of xdata in bibtex/biblatex bibliographies (#6752).
Fix some small typos in the API documentation (#6751, Michael Hoffmann).
Require citeproc 0.1.0.2. This fixes a regression from pandoc-citeproc involving spacing between components of a reference in certain styles (e.g. cell.csl).
Fix typos in comments, doc strings, error messages, and tests (Albert Krewinkel, #6738).

pandoc 2.11.0.1 (2020-10-13)

LaTeX reader: support more acronym commands (#6746): \acl, \aclp, and capitalized versions of already supported commands.
Commonmark reader: add pipe_table extension after defaults (#6739). Otherwise we get bad results for non-table, non-paragraph lines containing pipe characters.
Markdown writer: Fix autolinks rendering for gfm (#6740). Previously, autolinks rendered as raw HTML, due to the class="uri" added by pandoc's markdown reader.
LaTeX writer:
- Escape option values in lstlistings environment (#6742).
- Fix handling of lang pt-BR (#2953). For polyglossia we now use \setmainlanguage[variant=brazilian]{portuguese} and for babel \usepackage[shorthands=off,main=brazilian]{babel}.
Depend on latest citeproc (0.1.0.1).
- This fixes the citation number issue with ieee.csl and other styles that do not explicitly sort bibliographies (#6741). (Pandoc was numbering them by their order in the bibliography file, rather than the order cited, as required by the CSL spec.)
- Fixes groupin/collapsing with citation items with prefixes.
default.latex: fix CSLReference macro definition.
Fix MANUAL.txt CSL JSON conversion examples.
Fix spelling errors in changelog, MANUAL.txt, doc/org.md (#6738).

pandoc 2.11 (2020-10-11)

Add --citeproc (-C) option to trigger built-in citation processing. It is no longer necessary to use the external pandoc-citeproc filter. --citeproc behaves like a filter and can be positioned relative to other filters as they appear on the command line.

The new built-in citation processing uses the citeproc library, a reimplementation of CSL citation processing that fixes many of the shortcomings of pandoc-citeproc. In general, citation processing should work much the same as it did with pandoc-citeproc, but with greater fidelity to CSL styles and better performance. (The tests from the pandoc-citeproc package have been carried over to pandoc.) The following differences should be noted:
- At this point, only some of the writers (HTML, ms, LaTeX) properly interpret CSL display styles. You should get decent output in all formats (at least as good as with pandoc-citeproc), but indentation and block-alignment may not be right.
- pandoc-citeproc searches the ~/.csl directory for .csl styles. Pandoc instead searches the csl subdirectory of the pandoc user data directory (e.g., ~/.pandoc/csl or ~/.local/share/pandoc/csl). Users who already keep CSL styles in ~/.csl may find it convenient to add a symlink.
- Some of the bibliography formats supported by pandoc-citeproc (via hs-bibutils) are no longer supported: Copac, EndNote, ISI, MEDLINE, MODS, and RIS. If you use one of these formats, you may use the bibutils utility to convert to BibLaTeX. We now support only BibTeX, BibLaTeX, CSL JSON, and pandoc's YAML/Markdown analogue of CSL JSON.
- pandoc-citeproc would always retrieve the independent parent of a dependent style by doing an HTTP request. pandoc will now first seek the independent parent locally (in the resource path or in the csl subdirectory of the pandoc user data directory) before resorting to HTTP. In addition, you may omit the .csl extension, e.g. --csl zoology.
- Using the --bibliography option (or including bibliography in YAML metadata) no longer triggers citation processing implicitly: one must always use the --citeproc option if citation processing is wanted.
Add csljson as and input and output format. This allows pandoc to convert between csljson and other bibliography formats (e.g. -f csljson -t markdown -s or -f bibtex -t csljson), and to generate formatted versions of CSL JSON bibliographies (e.g., pandoc -f csljson --citeproc pl.json -o pl.pdf).
Added bibtex, biblatex as input formats. This allows pandoc to convert between BibLaTeX and BibTeX and other bibliography formats, and to generated formatted versions of BibTeX/BibLaTeX bibliographies (e.g., pandoc -f biblatex --citeproc pl.bib -o pl.pdf).
Raise informative errors when YAML metadata parsing fails (#6730). Previously the command would succeed, returning empty metadata, with no errors or warnings.
Sort languages in --list-highlight-languages output (#6718, Albert Krewinkel). Languages were previously sorted by their long name, which leads to unexpected results).
Add CSS to default HTML template (#6601, Mauro Bieg). This greatly improves the default typography in pandoc's HTML output. The CSS is sensitive to a number of variables (e.g. mainfont, fontsize, linestretch): see the manual for details. To restore the earlier, more spartan output, you can disable this with -M document-css=false.
Support --toc-depth option for ODT writer (#6696, niszet).
Fix issues with Windows UNC paths with some options (#5127).
Remove fenced_code_blocks and backtick_code_blocks from allowed commonmark and gfm extensions. These shouldn't really be counted as extensions, because they can't be disabled in commonmark. Adjust markdown writer to check for the commonmark variant in addition to extensions.
Add these extensions to gfm and commonmark: fenced_code_blocks, backtick_code_blocks, fenced_code_attributes. These can't really be disabled in the reader, but they need to be enabled in the writer or we just get indented code.
Make sure proper set of extensions is recognized for commonmark_x.
Allow gfm_auto_identifiers, ascii_identifiers extensions for docx.
Markdown reader:
- Add Maybe FilePath parameter to yamlToMeta [API change].
- Export yamlToRefs [API change], a version of yamlToMeta specialized to references.
- Set citationNoteNum accurately in citations.
- Revise abbreviation support. Don't insert a nonbreaking space after a potential abbreviation if it comes right before a note or citation. This causes problems for citeproc's moving of note citations.
LaTeX reader:
- Support missing siunitx commands (#6658).
- Support squared, cubed, tothe in siunitx (#6657).
- Improved uncertainty handling in slunitx.
- Factored out siunitx stuff into separate unexposed module.
- Fix improper empty cell filtering (#6689, Christian Despres).
- Fix parsing of "show name" in \newtheorem (#6734). Previously we were just treating it as a string and ignoring accents and formatting.
- Prevent wrong nesting of \multirow and \multicolumn table cells (#6603, Laurent P. René de Cotret).
- Table cell parser not consuming spaces correctly (#6596, Laurent P. René de Cotret).
- Change SIRange to SIrange (#6617, Emerson Harkin).
- Allow blank lines inside \author (#6324).
DocBook reader:
- Don't squelch space at end of emphasis and other inline elements; instead, move it outside the element (#6719).
- Implement table cell alignment (#6698, Nils Carlson).
- Implement column span support for tables (#6492, Nils Carlson).
- Update list of block level tags (#6610).
JATS reader:
- Don't squelch space at end of emphasis and other inline elements; instead, move it outside the element (#6719).
RST reader:
- Apply .. class:: directly to following Header rather than creating a surrounding Div (#6699).
Docx reader:
- Allow empty dates in comments and tracked changes (#6726, Diego Balseiro).
Markdown writer:
- Be less aggressive about using quotes for YAML values, allowing e.g. a quotation mark or bracket as long as it's not at the beginning of the line.
- Use double quotes for YAML metadata (#6727).
- Sort YAML metadata keys in Markdown output case-insensitive.
Asciidoc writer:
- Support asciidoctor's block figures (#6538, argent0).
LaTeX writer:
- Fix spacing issue with list in definition list. When a list occurs at the beginning of a definition list definition, it can start on the same line as the label, which looks bad. Fix that by starting such lists with an \item[].
HTML writer:
- Support intermediate table headers (#5314, Albert Krewinkel).
- Support attributes on all table elements (Albert Krewinkel).
- Render table footers if present (#6314, Albert Krewinkel).
- Fix addition of doc-biblioentry role.
- Support colspans and rowspans in HTML tables (#6312, Albert Krewinkel).
ICML writer:
- Support internal document links (#5541, Leonard Rosenthol).
- Changed default link state to invisible (#6676, Leonard Rosenthol).
Docx writer:
- Better handle list items whose contents are lists (#5948, Michael Hoffmann). If the first element of a bulleted or ordered list is another list, then that first item would previously disappear if the target format is docx.
- Separate adjacent tables (#4315). Word combines adjacent tables, so to prevent this we insert an empty paragraph between two adjacent tables.
Org writer:
- Don't force blank line after headings (#6554).
OpenDocument writer:
- Implement table cell alignment (#6700 Nils Carson, Mauro Bieg).
- New table cell support with row and column spans (#6682, Nils Carson).
- Syntax highlighting for inline code (#6711, niszet).
Add Text.Pandoc.Citeproc module, exporting processCitations [API change]. This depends on several other, unexported modules under Text.Pandoc.Citeproc.
Add module Text.Pandoc.Writers.CslJson, exporting writeCslJson. [API change]
Add module Text.Pandoc.Readers.CslJson, exporting readCslJson. [API change]
Add module Text.Pandoc.Readers.BibTeX, exporting readBibTeX and readBibLaTeX. [API change]
Text.Pandoc.Filter: Add CiteprocFilter constructor to Filter. [API change] This runs the processCitations transformation. We need to treat it like a filter so it can be placed in the sequence of filter runs (after some, before others). In FromYAML, this is parsed from citeproc or {type: citeproc}, so this special filter may be specified either way in a defaults file (or by citeproc: true, though this gives no control of positioning relative to other filters).
Add new exported module Text.Pandoc.Writers.AnnotatedTable [API change] (#6655, Christian Despres). This module (which should generally be imported qualified to avoid name conflicts) provides a Table type that mirrors the structure of a pandoc Table, but with added inferred information so that the writers do not have to lay out tables themselves. The toTable and fromTable functions convert between an annotated Table and a regular pandoc Table. In addition to producing a Table with coherent and well-formed annotations, the toTable function also normalizes its input table like the table builder does. Tests ensure that toTable normalizes tables exactly like the table builder, and that its annotations are coherent.
Text.Pandoc.Logging:
- Remove unused CouldNotParseYamlMetadata constructor for LogMessage [API change].
- Add CiteprocWarning constructor to LogMessage [API change].
Text.Pandoc.Readers.Metadata: export yamlBsToRefs [API change]. These allow specifying an id filter so we parse only references that are used in the document.
Text.Pandoc.Parsing:
- Export ParseError [API change].
- Add stateInNote and stateNoteNumber to ParserState [API change]. These are used to populate note numbers for citation processing.
Fix apparent typos in sample.lua (#6729, William Lupton). Also make the writer less aggressive in escaping quotes.
Text.Pandoc.Options:
- defaultMathJaxURL: use tex-chtml-full instead of tex-mml-chtml (#6599, Kolen Cheung). This drops the MathML support (which we don't need for HTML math rendering) and includes the full JavaScript, which makes it possible to use --self-contained (though there may still be issues if the required math fonts aren't available). This change should also reduce latency in pages with lots of formulas.
- Add /tex-chtml-full.js to defaultMathJaxURL (#6593) Previously we added this in processing command line options, but not in processing defaults files, which was inconsistent.
epub.css: Fix cover page selectors and add note explaining their use (#6649, a-vrma).
Add data files needed for Text.Pandoc.Citeproc: these include default.csl in the data directory and a citeproc directory that is only used at compile-time for biblatex localizations. Note that we've added file-embed as a mandatory rather than a conditional dependency, because of the biblatex localization files.
Lua filters:
- Add SimpleTable for backwards compatibility (#6575, Albert Krewinkel). A new type SimpleTable is made available to Lua filters. It is similar to the Table type in pandoc versions before 2.10; conversion functions from and to the new Table type are provided. Old filters using tables now require minimal changes and can use, e.g.,
```
if PANDOC_VERSION > {2,10,1} then
  pandoc.Table = pandoc.SimpleTable
end
```
  and
```
function Table (tbl)
  tbl = pandoc.utils.to_simple_table(tbl)
  …
  return pandoc.utils.from_simple_table(tbl)
end
```
  to work with the current pandoc version.
- Make attr argument optional in Table constructor (Albert Krewinkel). This changes the Lua API. It is highly unlikely for this change to affect existing filters, since the documentation for the new Table constructor (and type) was incomplete and partly wrong before. The Lua API is now more consistent, as all constructors for elements with attributes now take attributes as the last parameter.
MANUAL.txt:
- Add a dedicated Citations section which consolidates the information the manual used to contain about citation processing, and incorporates some information formerly found in the pandoc-citeproc man page.
- Add note about lualatex using selnolig.
- Remove duplicate seriespage (#6568, Blake Eryx).
- Remove lists of support extensions for markdown variants (#6604). Instead, offer the advice to use --list-extensions=FORMAT.
- Fix position of attributes in header (Albert Krewinkel).
- Delete obsolete section on compact and loose lists (#6684).
doc/lua-filters.md:
- Add info on how to debug Lua filters (#6732, Ian Max Andolina).
- Document Underline type and constructor (Albert Krewinkel).
- Document body field (Albert Krewinkel).
- Add missing header attribute
- Add missing Link.title field (Albert Krewinkel).
- Make the setting-the-date example conditional (the-solipsist). This makes the example a bit more realistic.
- Remove outdated link table example.
doc/org.md:
- Add section on tables (Albert Krewinkel).
- Add section on handling of unknown directives (Albert Krewinkel).
CONTRIBUTING.md: fix typo (#6584, Dmitry Volodin).
Use golden test framework for command tests. This means that --accept can be used to update expected output.
Use the smart extension when generating pandoc's man page (#6613).
Release-candidate: don't build windows i386. So far we haven't been able to figure out how to get stack to use a 32-bit ghc.
Use null instead of deprecated Builder.isNull.
Makefile:
- Fix macospkg target to fetch target from S3 artifacts.
- Fix pandoc-templates target to include all partials.
Remove duplicated dependency in pandoc.cabal (#6591, Felix Yan).
Sort build depends in pandoc.cabal alphabetically (#6691, Albert Krewinkel).
Add .travis.yml for macos release candidate build (#6622). We need to build the release candidate on Travis rather than GitHub actions, because GH has macos 10.15, and binaries compiled on that OS will not work with 10.13. This build is only triggered on rc/* branches.
Remove instructions for building pandoc-citeproc from CI and release binary build instructions. We will no longer distribute pandoc-citeproc.
Fix math rendering in trypandoc (this broke after commit d8ad766d17603784b86fc5c2e1b22864125d04d1).
Use latest versions of skylighting, commonmark (#6589), comonmark-extensions, commonmark-pandoc, texmath.
Relax version bounds for hslua, hslua-module-text, bytestring.
Use released pandoc-types 1.22. This changes the JSON encoding slightly for the new table types introduced in 1.21, so they're more consistent with the rest. Developers of libraries for pandoc filters will want to take note.
Fix hlint suggestions, update hlint.yaml (#6680, Christian Despres).
Code cleanup (#6678, Joseph C. Sible).
Add haddocks to functions in Text.Pandoc.Writers.Shared (Albert Krewinkel).
Remove duplicate tshow definition.
Linux release candidate build: use ghc-musl container. This simplifies our build process (over using a customized alpine container).

pandoc 2.10.1 (2020-07-23)

Add commonmark_x output format. This is commonmark with a number of useful pandoc extensions enabled.
Many more extensions now work with commonmark and gfm.
Add generic attributes extension. This allows attributes to be added to any block or inline element in a uniform way. Since the Pandoc AST doesn't include attributes on each element type, the attributes will sometimes be added by creating a surrounding Div or Span container. Currently this extension is only compatible with the commonmark and gfm readers.

To add an attribute to a block-level element, e.g. a paragraph, put it before the block:
```
{#mypara}
This is a paragraph.
```
Multiple attributes may be used and will be combined:
```
{#mypara}
{.blue .warning key="val"}
This is a paragraph.
```
To add an attribute to an inline-level element, put it immediately after the element:
```
*emphasized text*{.special}
```
Support --number-sections for docx output (#1413).
LaTeX reader:
- Support \SIRange reader (#6418, Emerson Harkin).
- Support table col-span and row-span (#6311, Laurent P. René de Cotret). Supports \multirow and \multicolumn.
- Support amsthm: \newtheorem, \theoremstyle, and theorem and proof environments, including labels and references. The only thing that is unsupported is the second optional argument, which causes numbering to be reset after the specified series is incremented.
- Moved some code to T.P.LaTeX.Parsing. We need to reduce the size of the LaTeX reader to ease compilation on resource-limited systems.
RST reader:
- Fix csv tables with multiline cells (#6549).
- Fix spurious newlines in some attributes from directives.
- Avoid extra newline in included code blocks.
Commonmark reader:
- Switch from cmark-gfm to commonmark-hs for commonmark and gfm parsing. This avoids depending on a C library and allows us to support more pandoc extensions for commonmark and gfm.
DocBook reader:
- Parse releaseinfo as metadata (#6542).
Docx reader:
- Only use bCs/iCs on runs with rtl or cs property (#6514, Nikolay Yakimov).
- Code cleanup/refactoring (Nikolay Yakimov).
Org reader (Albert Krewinkel):
- Respect export setting which disables entities MathML-like entities, e.g., \alpha, can be disabled with the #+OPTION: e:nil export setting (Albert Krewinkel).
- Respect export setting disabling footnotes. Footnotes can be removed from the final document with the #+OPTION: f:nil export setting.
- Respect tables-excluding export setting. Tables can be removed from the final document with the #+OPTION: |:nil export setting.
Markdown writer:
- Move asciify out of escapeString. Otherwise unsmartify doesn't catch quotes that have already been turned to entities.
- Add writeCommonmark (new exported function, API change).
- Use unicode super/subscript characters when possible if the superscript or subscript extension or raw_html aren't available.
- Render caption as following paragraph when table_caption extension is not enabled.
- Use numerical labels for reference links that are longer than 999 characters or contain square brackets, for conformity with commonmark (#6560).
Commonmark writer:
- Instead of using cmark-gfm, use writeCommonmark from the Markdown writer. This function calls the markdown writer with appropriate extensions and a few small modifications (e.g. not requiring backslashes before spaces inside super/subscripts). With this change comonmark and gfm output can be used with a wider selection of extensions.
Jira writer: keep image caption as alt attribute (#6529, Albert Krewinkel).
HTML writer:
- Improve alt-text/caption handling for HTML5 (#6491, Albert Krewinkel). Screen readers read an image's alt attribute and the figure caption, both of which come from the same source in pandoc. The figure caption is hidden from screen readers with the aria-hidden attribute. This improves accessibility. For HTML4, where aria-hidden is not allowed, pandoc still uses an empty alt attribute to avoid duplicate contents.
Ms writer:
- Fix code highlighting with blank lines. Previously blank lines were simply omitted from highlighted code.
- Escape starting periods in ms writer code blocks (#6505, Michael Hoffmann). If a line of ms code block output starts with a period (.), it should be prepended by \& so that it is not interpreted as a roff command.
Text.Pandoc.Extensions:
- Add raw_markdown extension (which only affects ipynb input).
- Trim down githubMarkdownExtensions. Previously it included all of the following, which make sense for the legacy markdown_github but not for gfm, since they are part of base commonmark and thus can't be turned off in gfm:
  - Ext_all_symbols_escapable
  - Ext_backtick_code_blocks
  - Ext_fenced_code_blocks
  - Ext_space_in_atx_header
  - Ext_intraword_underscores
  - Ext_lists_without_preceding_blankline
  - Ext_shortcut_reference_links
  These have been removed from githubMarkdownExtensions, though they're still turned on for legacy markdown_github.
- Add Ext_attributes constructor for Extension [API change].
LaTeX template: use selnolig to selectively suppress ligatures with lualatex (#6534).
Benchmark bytestring readers (Nikolay Yakimov).
Documentation:
- Update using-the-pandoc-api.md (favonia).
- Fix Typos in lua-filters.md (tajmone).
- Rewrite Raw HTML/TeX section in MANUAL.txt to avoid duplicate headings for the extensions.
- Fix typo in MANUAL.txt (Benjamin Wuethrich).
- Remove duplicate 'titlepage' in MANUAL.txt (Blake Eryx).
- CONTRIBUTING.md: Advertise the official nightlies in GitHub actions. Replaces #6500, thanks to @ickc.

pandoc 2.10 (2020-06-29)

Use pandoc-types 1.21. This adds two things:
- A native Underline constructor for Inline (#6277, Vaibhav Sagar).
- More expressive types for tables (#1024, Christian Despres). Tables can now take attributes; and rowspans and colspans, column headers, multiple row headers, table head and foot can all be represented. (Note, however, that reader and writer support for these features is still lacking, so most users won't see any differences in table conversion yet. These changes just lay the foundation for further improvements.)
Support new Underline element in readers and writers (#6277, Vaibhav Sagar).
Support new Table type (Christian Despres). The Builder.simpleTable now only adds a row to the TableHead when the given header row is not null. This uncovered an inconsistency in the readers: some would unconditionally emit a header filled with empty cells, even if the header was not present. Now every reader has the conditional behaviour. Only the XWiki writer depended on the header row being always present; it now pads its head as necessary.
Add an option to disable certificate validation (#6156, Cédric Couralet, Cécile Chemin, Juliette Fourcot). This commit adds the option --no-check-certificate, which disables certificate checking when resources are fetched by HTTP.
Unify defaults and markdown metadata parsers (#6328, Nikolay Yakimov). Clean up code in Text.Pandoc.Readers.Metadata and properly handle errors in yamlToMeta. This fixes parsing of Boolean fields in metadata withinin defaults files and reduces code duplication.
Docbook reader:
- Implement <procedure> (#6442, Mathieu Boespflug).
- Implement <phrase> (#6438, Mathieu Boespflug).
- Treat envar and systemitem like code (#6435, Mathieu Boespflug).
- Implement <replaceable> (#6437, Mathieu Boespflug)
- Map <simplesect> to unnumbered section (#6436, Mathieu Boespflug).
JATS reader:
- Handle "label" element in section title (#6288).
- Parse abstract element into metadata field of same name (#6480, Albert Krewinkel).
Jira reader (Albert Krewinkel):
- Resolve multiple parsing problems, including issues with empty table cells, faulty recognition of closing emphasis characters, and parsing of image attributes (#6212, #6219, #6220).
- Two consecutive markup chars are now parsed verbatim (#6343); styled text must not be empty.
- Newlines are no longer allowed within styled text (#6325).
- Links to anchors are now parsed as links (#6407).
- Retain image attributes (#6234). Jira images attributes as in !image.jpg|align=right! are retained as key-value pairs. Thumbnail images, such as !example.gif|thumbnail!, are marked by a thumbnail class in their attributes.
- Use Underline for inserted text (#6237). Previously, the span was marked with the non-standard class inserted.
- Improve icon conversion for (/), (x), (!), (?) (+), (-), (off), (*). (#6236, #6264).
- Support citations, attachment links, and user links (#6231, #6238, #6239).
- Resolve parsing issues of blockquote, color (#6233, #6235).
HTML reader:
- Parse attributes into table attributes.
- Support <bdo> (#5794, Tristan de Cacqueray).
- Add summary to list of block-level HTML tags (#6385). This improves support for summary/details inside Markdown. NOTE: you need to include a blank line before the closing </details>, if you want the last part of the content to be parsed as a paragraph.
- Fix parsing unclosed th elements in a table (#6247).
Commonmark reader: Implement implicit_figures extension (#6350).
Markdown Reader:
- Fix inline code in lists (#6284, Nikolay Yakimov). Previously inline code containing list markers was sometimes parsed incorrectly.
- Don't require blank line after grid table (#6481). This allows grid tables to be enclosed in fenced divs with no intervening blank lines.
LaTeX reader:
- Don't parse beyond \end{document} (#6380). This required some internal changes to \subfile handling.
- Better handling of \lettrine. SmallCaps instead of Span for the part after the initial capital. Ensure that both arguments are parsed, so that in Markdown both are treated as raw LateX. (Closes #6258.)
Org reader (Albert Krewinkel):
- Recognize images with uppercase extensions (#6472).
- Keep unknown keyword lines as raw org. The lines of unknown keywords, like #+SOMEWORD: value are no longer read as metadata, but kept as raw org blocks. This ensures that more information is retained when round-tripping org-mode files; additionally, this change makes it possible to support non-standard org extensions via filters.
- Unify keyword handling. Handling of export settings and other keywords (like #+LINK) has been combined and unified.
- Support LATEX_HEADER_EXTRA and HTML_HEAD_EXTRA settings. These export settings are treated like their non-extra counterparts, i.e., the values are added to the header-includes metadata list.
- Allow multiple #+SUBTITLE export settings. The values of all lines are read as inlines and collected in the subtitle metadata field.
- Read #+INSTITUTE values as text with markup. The value is stored in the institute metadata field and used in the default beamer presentation template.
- The behavior of the #+AUTHOR and #+KEYWORD export settings has changed: Org now allows multiple such lines and adds a space between the contents of each line. Pandoc now always parses these settings as meta inlines; setting values are no longer treated as comma-separated lists. Note that a Lua filter can be used to restore the previous behavior.
- Read description lines as inlines (#6485). #+DESCRIPTION lines are now treated as text with markup. If multiple such lines are given, then all lines are read and separated by soft linebreaks.
- Honor tex export option (#4070). The tex export option can be set with #+OPTION: tex:nil and allows three settings: t (the default) causes LaTeX fragments to be parsed as TeX or added as raw TeX. nil removes all LaTeX fragments from the document. verbatim treats LaTeX as text.
RST reader:
- Pass arbitrary attributes through in code blocks (#6465). Exceptions: name (which becomes the id), class (which becomes the classes), and number-lines (which is treated specially to fit with pandoc highlighting).
- Handle date:: directive (#6276).
Textile reader: support pre. for code blocks (#6454).
Ipynb reader:
- Implement raw_markdown extension (#5408). Specifying -f ipynb+raw_markdown will cause Markdown cells to be represented as raw Markdown blocks, instead of being parsed. This is not what you want when going from ipynb to other formats, but it may be useful when going from ipynb to Markdown or to ipynb, to avoid semantically insignificant changes in the contents of the Markdown cells that might otherwise be introduced.
- Handle application/pdf output as image (#6430).
- Properly handle image/svg+xml as an image (#6430).
Docx reader:
- Distinguish between docx parsing and docx container unpacking errors.
MediaWiki reader:
- Fix gfm_auto_identifiers so that - is not replaced by _ (#6335).
Vimwiki reader:
- Add nested syntax highlighting (#6256, Vlad Hanciuta). Nested syntaxes are specified like this:
```
{{{sql
SELECT * FROM table
}}}
```
  The preformatted code block parser has been extended to check if the first attribute of the block is not a key=value pair, and in that case it will be considered as a class.
Jira writer (Albert Krewinkel):
- Always escape braces (#6478). Braces are now always escaped, even within words or when surrounded by whitespace. Jira and Confluence treat braces specially.
- Convert Underline to inserted text (+inserted+).
- Add image attributes (#6234). Image attributes are added to the output as image parameters. If the image has a class "thumbnail", then a thumbnail image is generated; all other attributes are discarded in this case.
LaTeX writer:
- Ensure that -M csquotes works even in fragment mode (#6265).
- Escape ^ specially for listings (#6460).
- Create hypertarget for links with identifier (#6360).
- Distinguish between single and double quotes when using enquote package (#6457, dbecher-ito).
- Add support for customizable alignment of columns in beamer (#6331, andrebauer).
- Add support for customizable alignment of columns in beamer (#4805, #4150, andrebauer).
HTML writer:
- Use CSS in favor of <br> for display math (#6372) Some CSS to ensure that display math is displayed centered and on a new line is now included in the default HTML-based templates; this may be overridden if the user wants a different behavior.
Org writer:
- Clean-up Div handling (Albert Krewinkel).
Docx writer:
- Enable column and row bands for tables (#6371). This change will not have any effect with the default style. However, it enables users to use a style (via a reference.docx) that turns on row and/or column bands.
OpenDocument (and ODT) writer:
- Add custom-style "Abstract" in metadata abstract. This ensures that the abstract is rendered with style Abstract.
- Enable custom-style attribute on a Div. This allows you to apply a custom style to contained paragraphs.
DocBook writer:
- Add id of figure to enclosed image.
- Add personname element to docbook author (#6244).
FB2 writer:
- Properly handle cover-image containing spaces (#6391).
Markdown writer:
- Ensure consistent padding for pipe tables (#6240).
- Avoid unnecessary escapes before intraword _ when intraword_underscores extension is enabled (#6296).
RST writer:
- Properly handle images with same alt text (#6194). Previously we created duplicate references for these in rendering RST.
AsciiDoc writer:
- Add blank line after Div (#6308).
Haddock Writer:
- Support Haddock tables (Joe Hermaszewski). See this PR on Haddock for details on the table format: https://github.com/haskell/haddock/pull/718.
PowerPoint writer (Jesse Rosenthal):
- Write math input verbatim in speaker notes (#6301). OMML in speaker notes would lead to corrupt PowerPoint output. We now output the OMML verbatim as LaTeX in the speaker notes.
LaTeX template: Make polyglossia package options list-aware (#6444, Frederik Elwert).
Reveal.js template:
- Update template for reveal.js 4.0.0 (#6390, Salim B).
- Update template with newly available options (#6347, Jake Zimmerman).
- Use CDN version of revealjs v4 by default (#6408).
opendocument template: Add abstract and subtitle to opendocument template (#6369).
reference.odt: clean up styles. Add Abstract. Change Author, Date to centered paragraphs with no character styling.
epub.css: wrap overlong lines in highlighted code blocks (#6242). This fixes a problem in iBooks v2.4 with our earlier horizontally scrolling code blocks. The problem seems to be a bug in iBooks, not pandoc, but since iBooks is a major target we're changing pandoc's default behavior so that pandoc-produced epubs work on that platform.
Text.Pandoc.PDF:
- Use --enable-local-file-access in invoking wkhtmltopdf (#6474). wkhtmltopdf changed in recent versions to require this for access to local files. This fixes PDF via HTML5 with --css.
- Send verbose output to stderr, not stdout (#6483).
Text.Pandoc.MIME: Fix MIME type for TrueType fonts in EPUBs (#6464, Michael Reed).
Text.Pandoc.Shared:
- makeSections: omit number attribute when unnumbered class is present (#6339). Previously the attribute was included but given an empty value, and this caused the table of contents creation functions in Text.Pandoc.Writers.Shared to think these items had numbers, which meant that they were included in the TOC even if the unlisted class was used.
- Deprecate underlineSpan in Shared in favor of Text.Pandoc.Builder.underline (Vaibhav Sagar).
- renderTags': use self-closing tag for col element (#6295).
Text.Pandoc.UUID: Fix getRandomUUID, which previously would return the same value twice in a row. Make getRandomUUID polymorphic in PandocMonad. Remove getUUID (#6228, Joseph C. Sible).
Text.Pandoc.Class: Generalize PandocIO functions to MonadIO.
Fixed Katex standalone script (#6399, Lucas Escot). Global macros are now persistent when using the HTML Writer with the --katex option.
Lua subsystem (Albert Krewinkel):
- Use new type PandocLua for all pandoc Lua operations (API change). The new type PandocLua is an instance of the PandocMonad typeclass and can thus be used in a way similar to PandocIO.
- Use PandocError for exceptions in Lua subsystem (API change). The PandocError type is used throughout the Lua subsystem. All Lua functions throw an exception of this type if an error occurs. The LuaException type is removed and no longer exported from Text.Pandoc.Lua. In its place, a new constructor PandocLuaError is added to PandocError.
Lua filters: improve error messages for failing filters (#6332, Albert Krewinkel). Print the Lua error properly instead of displaying their show string.
Use latest skylighting. This fixes a bug with lua multiline comments (and may improve handling of other syntaxes as well). IT also adds aria-hidden="true" to the empty a elements, which helps people who use screen readers.
Use latest texmath.
Require latest doctemplates 0.8.2. This adds support for template pipes first, rest, last, allbutlast.
Revert 0e48a02 and dependency on base-noprelude, which hasn't been updated for ghc 8.10 (see #6187).
Dependency adjustments:
- Allow haddock-library 1.9.x.
- Allow hslua 1.1 (#6243, Felix Yan).
- Allow base64-bytestring 1.1.
- Use latest jira-wiki-markup.
- Allow http-client 0.7.
- Allow tasty 1.3.x.
- Allow aeson 1.5 (#6400, Felix Yan).
- Remove unused dependency vector (#6462, Laurent P. René de Cotret).
- Bump QuickCheck upper bound.
Significant code cleanup and simplification (Joseph C. Sible, #6223, #6209, #6225, #6229, #6226, #6340).
Remove unnecessary hlint ignores (#6341, Joseph C. Sible).
Remove obsolete RelaxedPolyRec extension (#6487, Nikolay Yakimov).
trypandoc improvements (Mike Tzou):
- Add standalone option to the command text (#6210).
- Update third party libraries.
MANUAL.txt:
- Clarify template partial naming (#6476, Mauro Bieg).
- Describe jira as "Jira/Confluence wiki markup" (#6351, Albert Krewinkel). In the past, Jira's wiki markup was also used by -- and could be imported into -- Atlassian Confluence.
- Add link to print-css.rocks (#6272, Mauro Bieg).
- Clarify pipe table column width adjustment (#6254).
- Fix ATX header syntax.
- Fix misleading note about image size conversions (#6353).
- Update links to reveal.js documentation (#6386, Salim B).
- Separate adjacent verbatim code blocks (#6307, tom-audm).
org.md:
- Document behavior of smart extension (#4387, Albert Krewinkel).
- Describe all supported export options in detail.
lua-filters.md:
- Fix description of BulletList Lua type (Levi Gruspe).
- Use pandoc.system module in TikZ example (Albert Krewinkel). Showcase temporary directory handling with with_temporary_directory and with_working_directory.
INSTALL.md: fix FreeBSD port link (#6422, Mo). The FreeBSD port was renamed from pandoc to hs-pandoc in 2010. The old pandoc port is still at version 1.5.1.1
Propagate (DY)LD_LIBRARY_PATH in tests (#6376, Lila).
Bump cabal-version to 2.2 (#6377).
Make it possible to compile using Stack on NixOS (#6439, Mathieu Boespflug).
CI action to check for commit message length (Nikolay Yakimov, #6398).

pandoc 2.9.2.1 (2020-03-23)

Markdown reader: Fix table alignment when heading begins with t (#6153). Due to a typo (t instead of \t) we were center aligning column headings that begin with a lowercase t!
Text.Pandoc.Readers.Roff:
- Fix parsing of \. in man/ms readers (#6175). Previously due to a typo it was being parsed as `.
- Fix parsing of \' in man/ms readers (#6175). It was being parsed as a backtick.
Jira reader (Albert Krewinkel):
- Fix parsing of tables without preceding blankline (#6198). A bug was fixed which caused faulty parsing if a table was not preceded by a newline and the first table cell had no space after the initial | characters.
- Fix parsing of strikeout, emphasis (#6196). A bug was fixed which caused non-emphasized text containing digits and/or non-special symbols (like dots) to sometimes be parsed incorrectly.
- Support colored inline text, indented lists (#6183, #6184).
Ms writer:
- Fix definition lists so indent even when paragraph indent is set to 0 (as is the default). Also ensure indent for display math that falls back to TeX.
- Use .QS/.QE instead of .RS/.RE for block quotes.
EPUB writer: fix regression on detection of front/back/bodymatter (#6170). This bug caused sections with epub:type dedication to be misplaced in bodymatter instead of frontmatter as specified in the manual. The same problem would affect other epub:types. The pattern matching needed to be changed with the use of makeSection.
AsciiDoc writer: remove redundant otherwise guard in inlineToAsciiDoc (#6146, Ryan Scott).
Text.Pandoc.Class:
- Fix missing import when data files are not embedded (Albert Krewinkel).
- Subdivide Text.Pandoc.Class into small unexported modules and ensure that all functions have Haddock documentation (#6106, Albert Krewinkel).
- Finer grained imports of Text.Pandoc.Class submodules (#6203, Albert Krewinkel).
Text.Pandoc.XML: Add to list of HTML5 attributes: allow, autocapitalize, decoding, enterkeyhint, imagesizes, imagesrcset, loading.
Use implicit Prelude (#6187, Albert Krewinkel). The previous behavior was introduced as a fix for #4464. It seems that this change alone did not fix the issue, and stack ghci and cabal repl only work with GHC 8.4.1 or newer, as no custom Prelude is loaded for these versions. Given this, it seems cleaner to revert to the implicit Prelude.
Always use custom prelude (#6187, Albert Krewinkel). Previously, the custom prelude was used only with older GHC versions, as a workaround for problems with ghci. The ghci problems are resolved by replacing package base with base-noprelude, allowing for consistent use of the custom prelude across all GHC versions.
Remove outdated checks for no longer supported base versions (Albert Krewinkel).
PDF via wkhtmltopdf: put user-specified options last (#6171). Certain options (e.g. cover) need to come after flags on the command line.
Text.Pandoc.App: set resource path at the beginning so it can affect things like include-in-header (#5982).
Change macOS release candidate CI process so that notarized packages can be produced (#6169).
Make MANUAL more explicit about nonbreaking space handling by all_symbols_escapable (#6154, Fabien Schurter).
trypandoc (Mike Tzou):
- Add checkbox for standalone option (#6189).
- Use strict mode for JavaScript code (#6188).
- Fetch resources over https (#6188).
- Remove unnecessary attributes on style, script elements (#6188).
Use details tag to make GitHub releases changelog collapsible.
Update filter code in doc/filters.md so it works with latest pandoc (#6185).
linux/Dockerfile: upgrade to alpine 3.11 (#6180, Albert Krewinkel). This is used to build the static linux binaries.

pandoc 2.9.2 (2020-02-15)

Add csv as an input format (#6100). The CSV table is converted into a pandoc simple table. A new module Text.Pandoc.Readers.CSV exports readCSV [API change].
Introduce new format variants for JATS writer (#6014, Albert Krewinkel):
- jats_archiving for the "Archiving and Interchange Tag Set",
- jats_publishing for the "Journal Publishing Tag Set", and
- jats_articleauthoring for the "Article Authoring Tag Set."
The jats output format is now an alias for jats_archiving. The module Text.Pandoc.Writers.JATS now exports writeJatsArchiving, writeJatsPublishing, and writeJatsArticleAuthoring, as well as the legacy writeJATS [API change].
--defaults: Support bibliography and csl fields. Move addMeta from Text.Pandoc.App.CommandLineOptions to Text.Pandoc.App.Opt (internal change).
Add timing info for filters in --verbose mode (#6112). When verbose mode is specified (verbosity == INFO), print a notice when running a filter and when a filter completes (including timing).
LaTeX reader:
- Allow & in LaTeX citation keys (#6110).
- Improve caption and label parsing.
- Don't emit empty Span elements for labels.
- Put tables with labels in a surrounding Div.
- Resolve \ref to table numbers (#6137).
- Skip comments in more places where this is needed (#6114).
- Allow beamer overlays for all commands in all raw tex (#6043). This affects parsing of raw tex in LaTeX and in Markdown and other formats.
- Improve parsing of raw environments (#6034). If parsing fails in a raw environment (e.g. due to special characters like unescaped _), try again as a verbatim environment, which is less sensitive to special characters. This allows us to capture special environments that change catcodes as raw tex when -f latex+raw_tex is used.
RST reader:
- Add highlight directive (#6140, Lucas Escot).
MediaWiki writer:
- Prevent triple [[[ which confuses MediaWiki (#6119).
HTML reader:
- Don't parse data-id as id attribute. And similarly don't parse any data-X as X when X is a valid HTML attribute.
Org reader:
- Simplify parsing of sub- and superscripts (#6127, Albert Krewinkel). Speeds up parsing of single-word, markup-less sub- and superscripts.
LaTeX writer:
- Group biblatex citations even with prefix and suffix (#5849, Ethan Riley). Previously biblatex citations were only grouped if there was no prefix. This patch allows them to be grouped in subgroups split by prefixes and suffixes, which allows better citation sorting.
- Fix regression in handling of columns in beamer slides (#6033). Columns in title slides were causing problems with slide division.
- Fix duplicate frame classes in LaTeX/Beamer output (#6107).
HTML writer:
- Fix duplicate attributes on headings (#6062), regression from 2.7.x.
- Fix --number-offset with HTML TOC. Eventually it would be worth adding a parameter to makeSections so this could be done at that level; then it would also affect other writers that construct TOC manually.
- reveal.js: restore old behavior for 2D nesting (#6032). The fix to #6030 actually changed behavior, so that the 2D nesting occurred at slide level N-1 and N, instead of at the top-level section. This commit restores the v2.7.3 behavior. If there are more than 2 levels, the top level is horizontal and the rest are collapsed to vertical.
- reveal.js: ensure that pauses work even in title slides (#5819).
Markdown writer:
- Fix regression: spurious dots in markdown_mmd metadata output (#6133).
Docx writer:
- Fix regression with Compact style on tight lists (#6072). Starting in 2.8, the docx writer no longer distinguishes between tight and loose lists, since the Compact style is omitted. This is a side-effect of the fix to #5670, as explained in the changelog. This patch fixes the problem by extending the exception currently offered to Plain blocks inside tables to Plain blocks inside list items.
Jira writer:
- Fix output of table headers (Albert Krewinkel, #6035).
Add Text.Pandoc.Image with unexported svgToPng.
Text.Pandoc.XML: Export html5Attributes, html4Attributes, rdfaAttributes (formerly unexported in Text.Pandoc.Writers.HTML). [API change]
Text.Pandoc.Shared: Export a new function findM (#6125, Joseph C. Sible).
Text.Pandoc.Logging: Add RunningFilter, FilterCompleted constructors to LogMessage [API change].
Text.Pandoc.CSV: fix bug in CSV parser; previously an extra blank record would sometimes be inserted at the end.
LaTeX template: add space option to xeCJK with PassOptionsToPackage (#6002). Otherwise we can get a clash with documentclasses that already load the package.
Lua filters:
- Allow filtering of element lists (#6038, Albert Krewinkel). Lists of Inline and Block elements can now be filtered via Inlines and Blocks functions, respectively. This is helpful if a filter conversion depends on the order of elements rather than a single element. For example, the following filter can be used to remove all spaces before a citation:
```
function isSpaceBeforeCite (spc, cite)
  return spc and spc.t == 'Space'
   and cite and cite.t == 'Cite'
end

function Inlines (inlines)
  for i = #inlines-1,1,-1 do
    if isSpaceBeforeCite(inlines[i], inlines[i+1]) then
      inlines:remove(i)
    end
  end
  return inlines
end
```
- Add methods insert, remove, and sort to pandoc.List (Albert Krewinkel). Example of use:
```
local numbers = pandoc.List {2, 3, 1}
numbers:sort()     -- numbers is now {1, 2, 3}
```
- Make pandoc.List a callable constructor (Albert Krewinkel). It is now possible to construct a new List via pandoc.List() instead of pandoc.List:new().
- Add tests for pandoc.List module (Albert Krewinkel).
Text.Pandoc.App.CommandLineOptions: Change setVariable to use Text instead of String. This avoids some unnecessary unpacking.
Use versioned directory for windows release zipfile. Also remove old make-windows-installer.bat, superseded by GitHub actions workflow, and modify pandoc.wxs for new paths.
Extensive code cleanup (#6141, #6128, #6129, #6130, #6123, #6105, 6102, #6117, #6124, #6115, #6116, #6111, Joseph C. Sible).
Fix hlint warnings (Albert Krewinkel).
Use latest doclayout, doctemplates (#6031). The new version of doclayout fixes a memory leak that affected --include-in-header with large files (and possibly other cases involving extremely long lines).
Use latest texmath.
Use latest skylighting and fix test suite (#6086).
sample.lua: Fix typo in descriptive comments (#6136, Caleb Maclennan). Fix typo in error message (#6135).
Add Docker and GH Actions instructions/links to INSTALL.md.
Update filter documentation (#6065). Improve cabal v2 instructions. Remove example using pandoc API directly (we have other docs for that and it was outdated).
Lua filter docs:
- Cross-link constructors and types (Albert Krewinkel). Thanks to @bpj for the idea.
- Sort pandoc.List methods alphabetically (Albert Krewinkel).
- Unify, fix anchors and internal links (#6061, Albert Krewinkel). Links and anchors now follow consistent conventions, like lowercase-only anchor names. This breaks some links to specific sections in the document, but will make it much easier to link documentation in the future.
- Clarify filter function execution order (#6059, Albert Krewinkel).
In docs, update URLs and use https: wherever possible (#6090, Salim B).

pandoc 2.9.1.1 (2020-01-05)

Markdown reader:
- Fix parsing bug affected indented code after raw HTML (#6009, #5360).
LaTeX writer:
- Fix regression in beamer slide structure with certain slide levels (#6030).
- Allow framebreaks for beamer's TOC (Heiko Schlittermann, #6012)
- Properly handle unnumbered headings level 4+ (#6018). Previously the \paragraph command was used instead of \paragraph* for unnumbered level 4 headings.
HTML writer:
- Fix revealjs slide structure regression with certain slide levels (#6030).
- Add newlines to make slide show output more readable.
Org writer:
- Remove extra spaces from table cells (Albert Krewinkel, #6024).
JATS template: Update JATS dtd (Arfon Smith, #6020). Use the archiving and interchange DTD rather than the more restrictive journal publishing DTD (which doesn't permit ext-link as a valid child).
Text.Pandoc.PDF: Fix runTeXProgram so that the input source is always overwritten (#6027). Previously it wasn't overridden if the file already existed, which led to bad results on subsequent runs when pdf-engine-opt=-output-directory= was used to specify an explicit temp dir.
Text.Pandoc.BCP47: Change getLang to handle block-level contents (#6008). Some readers (e.g. RST) will populate the lang metadata field with block-level content. getLang has been modified to handle this. Previously in these cases the LaTeX writer would not properly set the "main language" of the document.
Fix test/tables.org (Albert Krewinkel).
Use HTTPS in copyright message (Felix Yan, #6010)

pandoc 2.9.1 (2019-12-23)

Add Jira reader (Albert Krewinkel, #5556).
Jira writer: use jira-wiki-markup renderer (Albert Krewinkel, #5926). The following improvements are included in this change:
- non-jira raw blocks are fully discarded instead of showing as blank lines;
- table cells can contain multiple blocks;
- unnecessary blank lines are removed from the output;
- markup chars within words are properly surrounded by braces;
- preserving soft linebreaks via --wrap=preserve is supported.
Note that backslashes are rendered as HTML entities, as there appears no alternative to produce a plain backslash if it is followed by markup. This may cause problems when used with confluence, where rendering seems to fail in this case.
Fix regression with --number-sections. Starting with 2.8, --number-sections also had the effect of --section-divs, even if --section-divs was not specified.
Improved table of contents generation in markdown, RTF, commonmark, better handling cases where section headings are enclosed in divs.
Ensure that later default file values for variable replace earlier ones (5988).
HTML reader: Add nav to list of block-level tags.
Org reader (Albert Krewinkel):
- Wrap named table in Div, using name as id (#5984). Tables which are given a name via #+NAME: or #+LABEL: are wrapped in an additional Div, with the name set as the Div's ID.
- Report parsing errors properly.
- Fix parsing problem for colons in headline (#5993).
Text.Pandoc.PDF: Ensure UTF8 when printing source in --verbose mode, avoiding an error on platforms that default to something other than UTF-8 (#5997).
Text.Pandoc.Templates: Strip directory before trying to find partial in data files (#5987).
Text.Pandoc.Shared: Improve makeSections so we don't get doubled "number" attributes in EPUB output (or anywhere else) (#5986).
Added tests for --toc and --section-divs.
Text.Pandoc.MIME: Added glsl MIME type for WebGL maps (#6000, Jared Lander).
MANUAL: A bit clearer explanation for --base-header-level. We now say exactly how to translate between the deprecated --base-header-level and --shift-heading-level-by.
lua-filters.md:
- Remove spurious dot in title (#5996, Mauro Bieg).
- Replace metadata example with image centering (#6004, Albert Krewinkel). Thanks to @efx for proposing this filter.

pandoc 2.9 (2019-12-11)

Text.Pandoc.Templates [API change]
- Add Monad wrappers WithDefaultPartials and WithPartials. Wrapping these around an instance of PandocMonad gives us different instances of TemplateMonad, with different search behavior in retrieving partials. To compile a template and limit partial search to pandoc's data files, use runWithDefaultPartials (compileTemplate ...). To compile a template and allow partials to be found locally (either on the file system or via HTTP, in the event that the main template has an absolute URL), ue runWithPartials (compileTemplate ...).
- Export getTemplate, which seeks a template locally, or via HTTP if the template has an absolute URL, falling back to the data files if not found.
- Export compileDefaultTemplate -- does getDefaultTemplate and compiles the result, raising an error on failure.
Text.Pandoc.Class [API change]
- Remove TemplateMonad instances for PandocIO and PandocPure. These were too limiting and caused a bug whereby a local partial could be used even when the default template was requested. We now rely on instances provided in the Templates module.
Text.Pandoc.App.OutputSettings: Simplify template retrieval code.
ConTeXt template: Adjust to title formatting (#5949, Denis Maier). Add \setupinterlinespace to title, subtitle, date and author elements: otherwise longer titles that run over multiple lines will look squashed as \tfd etc. won't adapt the line spacing to the font size.
reveal.js template: Add title-slide-attributes variable (#5981, Frederik Elwert).
More informative JSON parse error (#5973).
Use external emojis package (forked from pandoc). Removed emoji data in Text.Pandoc.Emoji.
Fix regression in makeSections (#5965). Previously hierarchicalize (the ancestor of makeSections) would put header attributes on the containing Div. In 2.8 this behavior changed, which broke some tools depending on pandoc. Here we roll back this change, so that attributes again migrate from the header to the containing Div when makeSections is run. Note that attributes are retained on the header as well (unlike before) -- with the exception of the id attribute, which of course cannot be duplicated.
Fix --toc-depth regression in 2.8 (#5967).
Use doctemplates 0.8. Rename template 'filters' as 'pipes' to avoid confusion with the other notion of filter used by pandoc.
Fix README.md so that relative links from manual become absolute. Previously they'd be broken links when viewed on GitHub or Hackage. So we add the base URL for the pandoc manual.
Document display math syntax in manual.

pandoc 2.8.1 (2019-12-05)

Add ascii_identifiers as a supported extension for markdown. This fixes a regression in 2.8.
Fix regression with behavior of --variable (#5962). Previously -Vfoo=1 -Vfoo=2 would produce a list value for foo; with 2.8 it produced just 2. This commit restores the earlier behavior.
Roll back part of of --shift-heading-level-by change (#5957). With positive heading shifts, starting in 2.8 this option caused metadata titles to be removed and changed to regular headings. This behavior is incompatible with the old behavior of --base-header-level and breaks old workflows, so we have rolled back the change. Note that there is now an asymmetry in positive and negative heading level shifts: With positive shifts, the metadata title stays the same and does not get changed to a heading in the body, while with negative shifts, a heading can be converted into the metadata title.
Text.Pandoc.Shared: Fix makeSections so it doesn't turn column Divs into sections.
HTML writer: add task-list class to ul if all elements are task list items. This will allow styling unordered task lists in a way that omits the bullet.
HTML-based templates: Add CSS to suppress bullet on unordered task lists.
ConTeXt template: Fix \startcslreferences and use ConTeXt syntax conventions (#5945, Denis Maier). The old version had a too large a skip at the beginning of the reference list.
LaTeX template: keep the \author{} command even if author is not specified (#5961, Yihui Xie). Avoids a LaTeX warning.
Generate Emoji module with TH.
- Add Text.Pandoc.Emoji.TH.
- Replace long literal list in Text.Pandoc.Emoji with one-liner generating it from emoji.json using TH.
- Add Makefile target to download emoji.json.
- Remove tools/emoji.hs.
Increase GC allocation space for compilation in cabal.project.
Clean up manual on PDF generation backend options (#5940).
Update release checklist to include code signing step and update Windows release-candidate builds (#5950).

pandoc 2.8.0.1 (2019-11-26)

List pdf in --list-output-formats.
EPUB writer: Fix regression with --css (#5937). In 2.8 --css would not have an effect on EPUB output.
RST writer: Use grid tables for one-column tables, since simple tables clash with heading syntax in this case (#5936).
Add unexported module Text.Pandoc.Readers.Metadata (see #5914).
Use doctemplates 0.7.2, which adds the nowrap filter to templates.
Update default man template using nowrap for .TH heading (#5929).
HTML templates: Add support for toc-title variable (#5930, Alexandre Franke).
Remove grffile (LaTeX package) requirement in MANUAL.txt (#5927, Ian Max Andolina).
Use skylighting 0.8.3.

pandoc 2.8 (2019-11-22)

Improvements in templates system (from doctemplates):
- Pandoc templates now support a number of new features that have been added in doctemplates: notably, elseif, it, partials, filters, and syntax to control nesting and reflowing of text. These changes make pandoc more suitable out of the box for generating plain-text documents from data in YAML metadata. It can create enumerated lists and even tabular structures.
- We now used templates parameterized on doclayout Doc types. The main impact of this change is better reflowing of content interpolated into templates. Previously, interpolated variables were rendered independently and interpolated as strings, which could lead to overly long lines. Now the templates interpolated as Doc values which may include breaking spaces, and reflowing occurs after template interpolation rather than before.
- Remove code from the LaTeX, Docbook, and JATS writers that looked in the template for strings to determine whether it is a book or an article, or whether csquotes is used. This was always kludgy and unreliable.
- Change template code to use new API for doctemplates.
Add --defaults/-d option. This adds the ability to specify a collection of default values for options in a YAML file. For example, one might define a set of defaults for letters, and then do pandoc -d letter myletter.md -o myletter.pdf. See the documentation of this feature in MANUAL.txt.
Raise error on unsupported extensions (#4338).
The --list-extensions[=FORMAT] option now lists only extensions that affect the given FORMAT.
Add -L option as shortcut for --lua-filter.
Add --shift-heading-level-by option and deprecate --base-heading-level (#5615). The new option does everything the old one does, but also allows negative shifts. It also promotes the document metadata (if not null) to a level-1 heading with a +1 shift, and demotes an initial level-1 heading to document metadata with a -1 shift. This supports converting documents that use an initial level-1 heading for the document title.
Allow --metadata-file to be used repeatedly to include multiple metadata files (Owen McGrath, #5702). Values in files specified first will be overridden by those in later files.
--ascii now uses numerical hex character references (#5718).
Allow PDF output to stdout (#5751). PDF output now behaves like other binary formats: it will not be output to the terminal, but can be sent to stdout using either -o - or a pipe. The intermediate format will be determined based on the setting of --pdf-engine.
Make some writers sensitive to 'unlisted' class on headings (#1762). If this is present on a heading with the 'unnumbered' class, the heading won't appear in the TOC. This class has no effect if 'unnumbered' is not also specified. This affects HTML-based writers (including slide shows and EPUB), LateX (including beamer), RTF, and PowerPoint. Other writers do not yet support unlisted.
Fix gfm_auto_identifiers behavior with emojis (#5813). Note that we also now use emoji names for emojis when ascii_identifiers is enabled.
When --ipynb-output is used with the default "best" format, strip ANSI escape codes for non-ipynb output (#5633). These cause problems in many formats, including LaTeX.
Don't look for template files remotely for remote input (#5579). Previously pandoc would look for the template at a remote URL when a URL was used for the input file, instead of taking it from the data directory.
Allow combining -Vheader-includes and --include-in-header (#5904). Previously header-includes set as a variable would be clobbered by material included using --include-in-header.
Change merge behavior for metadata. Previously, if a document contained two YAML metadata blocks that set the same field, the conflict would be resolved in favor of the first. Now it is resolved in favor of the second (due to a change in pandoc-types). This makes the behavior more uniform with other things in pandoc (such as reference links and --metadata-file).
Don't add a newline to fragment output if there's already one.
Change exit codes and document in MANUAL.txt:
- PandocAppError was 1, is now 4
- PandocOptionError was 2, is now 6
- PandocMakePDFError was 65, is now 66
Switch to new pandoc-types and use Text instead of String [API change]. (Christian Despres, #5884).
HTML reader:
- Better handling of <q> with cite attribute (#5798, Ole Martin Ruud). If a <q> tag has a cite attribute, we interpret it as a Quoted element with an inner Span.
- Add support for HTML <samp> element (#5792, Amogh Rathore). The <samp> element is parsed as Code with class sample.
- Add support for HTML <var> element (#5799, Amogh Rathore). The <var> element is parsed as Code with class variable.
- Add support for <mark> elements (Florian B, #5797). Parse <mark> elements from HTML as Spans with class mark.
- Add support for <kbd> elements, parsing them as Span with class kbd (Daniele D'Orazio, #5796).
- Add support for <dfn>, parsing this as a Span with class dfn (#5882, Florian Beeres).
Markdown reader:
- Headers: don't parse content over newline boundary (#5714).
- Handle inline code more eagerly within lists (Brian Leung, #5627).
- Removed some needless lookaheads.
- Don't parse footnote body unless extension enabled.
- Fix small super/subscript issue (#5878). Superscripts and subscripts cannot contain spaces, but newlines were previously allowed (unintentionally). This led to bad interactions in some cases with footnotes. With this change newlines are also not allowed inside super/subscripts.
- Use take1WhileP for str, table row. This yields a small but measurable performance improvement.
LaTeX reader:
- Fix parsing of optional arguments that contain braced text (#5740).
- Don't try to parse includes if raw_tex is set (#5673). When the raw_tex extension is set, we just carry through \usepackage, \input, etc. verbatim as raw LaTeX.
- Properly handle optional arguments for macros (#5682).
- Fix \\ in \parbox inside a table cell (#5711).
- Improve withRaw so it can handle cases where the token string is modified by a parser (e.g. accent when it only takes part of a Word token) (#5686). This fixes a bug that caused the ends of certain documents to be dropped.
- Handle \passthrough macro used by latex writer (#5659).
- Support tex \tt command (#5654).
- Search for image with list of extensions like latex does, if an extension is not provided (#4933).
- Handle \looseness command values better (#4439).
- Add mbox and hbox handling (Vasily Alferov, #5586). When +raw_tex is enabled, these are passed through literally. Otherwise, they are handled in a way that emulates LaTeX's behavior.
- Properly handle \providecommand and \provideenvironment (#5635). They are now ignored if the corresponding command or environment is already defined.
- Support epigraph command in LaTeX Reader (oquechy, #3523).
- Ensure that expanded macros in raw LaTeX end with a space if the original did (#4442).
- Treat ly environment from lilypond as verbatim (Urs Liska, #5671).
- Add tikzcd to list of special environments (Eigil Rischel). This allows it to be processed by filters, in the same way that one can do for tikzpicture.
Roff reader:
- Better support for while.
- More improvements in parsing conditionals.
- Fix problem parsing comments before macro.
- Improve handling of groups.
- Better parsing of groups (#5410). We now allow groups where the closing \\} isn't at the beginning of a line.
RST reader:
- Keep name property in imgAttr (Brian Leung, #5619).
- Fixed parsing of indented blocks (#5753). We were requiring consistent indentation, but this isn't required by RST.
- Use title, not admonition-title, for admonition title. This puts RST reader into alignment with docbook reader.
- Don't strip final underscore from absolute URI (#5763).
- Avoid spurious warning when resolving links to internal anchors ending with _ (#5763).
Org reader:
- Accept ATTR_LATEX in block attributes (Albert Krewinkel, #5648). Attributes for LaTeX output are accepted as valid block attributes; however, their values are ignored.
- Modify handling of example blocks (Brian Leung, #5717).
- Allow the -i switch to ignore leading spaces (Brian Leung).
- Handle awkwardly-aligned code blocks within lists (Brian Leung). Code blocks in Org lists must have their #+BEGIN_ aligned in a reasonable way, but their other components can be positioned otherwise.
- Fix parsing of empty comment lines (#5856, Albert Krewinkel). Comment lines in Org-mode can be completely empty.
Muse reader (Alexander Krotov):
- Add RTL support (#5551).
- Do not allow closing asterisks to be followed by *.
- Do not split series of asterisks into symbols and emphasis (#5821).
- Do not terminate emphasis on * not followed by space.
DokuWiki reader:
- Parse markup inside monospace ('') (#5916, Alexander Krotov).
Docx reader:
- Move style-parsing-specific code to a new unexported module, Text.Pandoc.Readers.Docx.Parse.Styles (Nikolay Yakimov).
- Move StyleMap to docx writer (Nikolay Yakimov).
- Only use LTR when it is overriding BiDi setting (#5723, Jesse Rosenthal). The left-to-right direction setting in docx is used in the spec only for overriding an explicit right-to-left setting. We only process it when it happens in a paragraph set with BiDi. This is especially important for docs exported from Google Docs, which explicitly (and unnecessarily) set rtl=0 for every paragraph.
- Fix list number resumption for sublists (#4324). The first list item of a sublist should not resume numbering from the number of the last sublist item of the same level, if that sublist was a sublist of a different list item.
Docbook reader:
- Richer parse for admonitions (Michael Peyton Jones, #1234). Instead of parsing admonitions as blockquotes, we now parse them as Divs with an appropriate class. We also handle titles for admonitions as a nested Div with the "title" class.
- Fix nesting of chapters and sections (#5864, Florian Klink, Félix Baylac-Jacqué).
- Fix bug with entities in mathphrase element (#5885).
MediaWiki reader:
- Skip optional {{table}} template (#5757).
LaTeX reader:
- Fix dollar-math parsing to ensure that space is left between a control sequence and a following letter (#5836).
- In untokenize, ensure space between control sequence and following letter (#5836).
- Don't omit macro definitions defined in the preamble. These were formerly omitted (though they still affected macro resolution if latex_macros was set). Now they are included in the document body.
- Parse macro definitions as raw LaTeX when latex_macros is disabled. (When latex_macros is enabled, we omit them, since pandoc is applying the macros itself.)
- Fix a hang/memory leak in certain circumstances (#5845).
- Text.Pandoc.Readers.LaTeX.Parsing: add [Tok] parameter to rawLaTeXParser. This allows us to repeat retokenizing unnecessarily in e.g. rawLaTeXBlock.
- Add KOMA-Script metadata commands (#5910, Andrew Dunning). Add all titling commands to existing definition for \dedication.
- Parse \micro siunitx unit command (#5921, Jose Luis Duran).
Markdown writer:
- Ensure proper nesting when we have long ordered list markers (#5705).
- Make plain output plainer (#5741). Previously we used the following Project Gutenberg conventions for plain output: extra space before and after level 1 and 2 headings, all-caps for strong emphasis, underscores surrounding regular emphasis. Now these conventions are used only when the gutenberg extension is enabled. By default, Strong and Emph are rendered without special formatting, and headings are rendered without special formatting, and with only one blank line following. To restore the former behavior, use -t plain+gutenberg.
- Prefer using raw_attribute when enabled (#4311). The raw_attribute will be used to mark raw bits, even HTML and LaTeX, and even when raw_html and raw_tex are enabled, as they are by default. To get the old behavior, disable raw_attribute in the writer.
- Prefer pipe_tables to raw HTML even when we must lose width information (#2608, #4497).
- Improve escaping in list items (#5918).
AsciiDoc writer:
- Don't include + in code blocks for regular asciidoc. This is asciidoctor-specific.
- Handle admonitions (#5690).
LaTeX writer:
- Add thin space when needed in LaTeX quote ligatures (#5684).
- Use \hspace{0pt} for 0-width space U+200B (#5756).
- Use cslreferences environment for csl bibliographies. This allows bibliographies to receive special formatting. The template now contains definition of this environment (enabled only when CSL is used). It also defines a \cslhangindent length. This is set to 2em by default when the bibliography style specifies a hanging indent. To override the length, you can use e.g. \setlength{\cslhangindent}{7em} in header-includes. See jgm/pandoc-citeproc#410.
- Strip off {} around locator for biblatex/natbib output (#5722).
- Fix line breaks at start of paragraph (#3324). Previously we just omitted these. Now we render them using \hfill\break instead of \\. This is a revision of a PR by @sabine (#5591) who should be credited with the idea.
- We no longer look in the template or header-includes to see if a book or article documentclass is used, or to see whether the csquotes package is used. To use csquotes for LaTeX, set csquotes in your variables or metadata. To specify a book style, use the documentclass variable or --top-level-division.
- Fix horizontal rule (#5801). We change to use 0.5pt rather than \linethickness, which apparently only ever worked "by accident" and no longer works with recent updates to texlive.
ConTeXt writer:
- Add option to include source files in ConTeXt PDFs (Tristan Stenner, #5578). The metadata field or variable (includesource) can be set to attach the source documents to the resulting PDF.
- Customizable type of PDF/A for the ConTeXt writer (Karl Pettersson, #5608). The pdfa variable may now be set in metadata. Also updated color profile settings in accordance with ConTeXt wiki, and made ICC profile and output intent for PDF/A customizable using pdfaiccprofile and pdfaintent.
- Unit tests: adjust code property to avoid an irrelevant failure involving inline code with two consecutive newlines.
- Set csl-hanging-indent variable if needed.
- Use special environment for CSL references.
- Use braces, not start/stop, for inline language tags. This prevents unwanted gobbling of spaces.
HTML writer:
- Use numeric character references with --ascii (#5718). Previously we used named character references with html5 output. But these aren't valid XML, and we aim to produce html5 that is also valid XHTML (polyglot markup). (This is also needed for epub3.)
- Ensure that line numbers in code blocks get id-prefix (#5650).
- Ensure TeX formulas are rendered correctly (Philip Pesca, #5658). The web service passed in to --webtex may render formulas using inline or display style by default. Prefixing formulas with the appropriate command ensures they are rendered correctly.
- Render inline formulas correctly with --webtex (Philip Pesca, #5655). We add \textstyle to the beginning of the formula to ensure it will be rendered in inline style.
- Pass through aria- attributes to HTML5 (#5642).
- Render a Quoted element with an inner Span with cite attribute using a <q> tag (#5798, Ole Martin Ruud).
- Render a Span with class mark using the <mark> element (Florian Beeres, #5797).
- Render Span with class dfn using <dfn> element (Florian Beeres, #5882).
- Render Span with class kbd using <kbd> element (Daniele D'Orazio, #5796).
- Render Code with class variable using <var> element (Amogh Rathore, #5799).
- Render Code with class sample using <samp> element (Amogh Rathore, #5799).
EPUB writer:
- Improve splitting into chapters (#5761), using makeSection.
- Avoid issuing warning multiple times when title not set (see #5760).
- Use svg tag wrapper for cover image (#5638). In addition, the code generating the image has been moved to the template, to make it more customizable. NOTE: Those who use custom EPUB templates will need to adjust their templates, adding the code to generate the cover image. (Previously this was just inserted into 'body'.)
- Improve toChapters, making it work better if there are Divs around sections.
- Add support for EPUB2 covers (blmage, #3992).
- Do not override existing "fileN" medias when writing to EPUB format (blmage, #4206).
- Ensure that lang variable is set on all chapters (so that it will add an xml:lang attribute on the html element).
RST writer:
- Removed remnants of admonition-title.
- Fix handling of :align: on figures and images (#4420). When the image has the align-right (etc.) class, we now use an :align: attribute.
- Improve spacing for tables with no width information (#5899). If a simple table would be too wide, we use a grid table.
- Fix backslash escaping after strings (Albert Krewinkel, #5906). The check whether a complex inline element following a string must be escaped, now depends on the last character of the string instead of the first.
- Ensure there's a blank line before tables (#5898).
Dokuwiki writer:
- Handle mixed lists without HTML fallback (#5107).
XWiki writer:
- Fix multiline table (Zihang Chen, #5683).
Muse writer:
- Add RTL support (Alexander Krotov, #5551).
Man writer:
- Suppress non-absolute link URLs (#5770). Absolute URLs are still printed in parentheses following the link text, but relative URLs are suppressed (just as internal links starting with '#' always have been).
- Improved definition list term output. Now we boldface code but not other things. This matches the most common style in man pages (particularly option lists).
Ms writer:
- Use .LP instead of .PP for line block (#5588).
- Use boldface for definition terms in DefinitionLists.
JATS writer:
- Do not emit empty <fn-group> (Mauro Bieg, #5595).
- Update template to v1.1dtd (#5632, Arfon Smith).
- Update data/jats.csl to avoid commas between editor name-part elements. (#5629)
- Add abstract to template (Mauro Bieg).
TEI writer:
- Don't strip hash from internal links (#5922).
Jira writer:
- Remove escapeStringForJira for code blocks (Jan-Otto Kröpke).
- Remove extraneous newline after single-line block quotes (#5858, Albert Krewinkel).
- Improve escaping of special characters, using backslash escapes instead of HTML entities (#5858, Albert Krewinkel).
OpenDocument writer:
- Avoid duplicate attributes (#4634). We use the innermost attribute in nested cases.
- If native_numbering extension is set, use native OpenDocument enumeration for figures and tables (Nils Carlson).
- Place caption before table (#5681, Dmitry Pogodin).
ODT writer:
- Add a test for MathML formulas in ODT documents (blmage).
- Improve the parsing of frames in ODT documents (blmage).
Docx writer:
- Make handling of styles more robust in localized versions of Word (Nikolay Yakimov, #5523, #5052, #5074). We now use style names, not ids, for assigning semantic meaning, since the ids can change depending on the locale. Style name comparisons are case-insensitive, since those are case-insensitive in Word. Since docx style names can have spaces in them, and pandoc-markdown classes can't, anywhere when style name is used as a class name, spaces are replaced with ASCII dashes -. Code styles, i.e. "Source Code" and "Verbatim Char" now honor style inheritance. Docx Reader now honours "Compact" style (used in Pandoc-generated docx). The side-effect is that "Compact" style no longer shows up in docx+styles output. Styles inherited from "Compact" will still show up.
- Re-use Readers.Docx.Parse for StyleMap (#5766, Nikolay Yakimov).
- Internal improvements and code simplification (Nikolay Yakimov).
- Preserve built-in styles in DOCX with custom style (Ben Steinberg, #5670). This change prevents custom styles on divs and spans from overriding styles on certain elements inside them, like headings, blockquotes, and links. On those elements, the "native" style is required for the element to display correctly. This change also allows nesting of custom styles; in order to do so, it removes the default "Compact" style applied to Plain blocks, except when inside a table.
- Add proofState to list of elements carried over from settings.xml in the reference.docx (Krystof Beuermann, #5703).
- Change order of ilvl and numId in document.xml (Agustín Martín Barbero, #5645). Also, make list para properties go first. This reordering of properties shouldn't be necessary but it seems Word Online does not understand the docx correctly otherwise.
PowerPoint writer:
- Code formatting is now context dependent (Jeroen de Haas, #5573). This commit alters the way in which the Powerpoint writer treats inline code and code blocks. Inline code is now formatted at the same size as the surrounding text. Code blocks are now given a margin and font size according to their level. Furthermore this commit allows changing the font with which code is formatted via the monofont option.
- Start numbering at appropriate numbers (Jesse Rosenthal, #5709). Starting numbers for ordered lists were previously ignored. Now we specify the number if it is something other than 1.
Text.Pandoc.Parsing:
- Add manyChar, many1Char, manyTillChar, many1TillChar, many1Till, manyUntil, mantyUntilChar: these are like their unsuffixed counterparts but pack some or all of their output (Christian Despres, #5884).
- Add stateAllowLineBreaks to ParserState [API change].
- Fix inline parsing in grid table cells (#5708).
- Change type of setLastStrPos so it takes a Maybe SourcePos rather than a SourcePos [API change].
- Make parseFromString' and gridTableWith and gridTableWith' polymorphic in the parser state, constraining it with HasLastStrPosition [API change].
- parseFromString': reset stateLastStrPos to Nothing before parse.
- Rename takeWhileP -> take1WhileP and clean it up. (It doesn't match the empty sequence.)
Text.Pandoc.PDF:
- For PDFs via HTML, ensure temp file is deleted even if the pdf program is not found (#5720).
- Better detection of a Cygwin environment (#5451).
- Don't assume tex log file is UTF8-encoded (#5872). Fall back to latin1 if it can't be read as UTF-8.
Text.Pandoc.Extensions:
- Export new function getAllExtensions, which returns the extensions that affect a given format (whether enabled by default or not) [API change].
- Change type of parseFormatSpec from Either ParseError (String, Extensions -> Extensions) to Either ParseError (String, [Extension], [Extension]) [API change].
- Add Ext_gutenberg constructor to Extension [API change].
- Add Ext_native_numbering constructor to Extension [API change] (Nils Carlson).
Text.Pandoc.Readers, Text.Pandoc.Writers:
- Change type of getReader and getWriter so they return a value in the PandocMonad instance rather than an Either [API change]. Exceptions for unknown formats and unsupported extensions are now raised by these functions.
Text.Pandoc.App
- Change optMetadataFile type from Maybe FilePath to [FilePath] (Owen McGrath, #5702) [API change].
Text.Pandoc.Logging:
- Add CouldNotDeduceFormat constructor to LogMessage [API change]. Issue this warning when we're falling back to markdown or html because we don't recognize the extension of the input or output files.
- Clarify warning for missing title (#5760).
- Add UnusualConversion constructor to LogMessage [API change] (Mauro Bieg, #5736). Emit warning on -f latex -o out.pdf.
Lua filters:
- Improve function documentation (Albert Krewkinkel).
- Traverse nested blocks and inlines in correct order (Albert Krewinkel, #5667). Traversal methods are updated to use the new Walk module so that sequences with nested Inline (or Block) elements are traversed in the order in which they appear in the linearized document.
- New unexported module Text.Pandoc.Lua.Walk (Albert Krewinkel). Lua filters must be able to traverse sequences of AST elements and to replace elements by splicing sequences back in their place. Special Walkable instances can be used for this; those are provided in a new module Text.Pandoc.Lua.Walk.
- Attr values can now be given as normal Lua tables (Albert Krewinkel, #5744). This can be used as a convenient alternative to constructing Attr values with pandoc.Attr. Identifiers are taken from the id field, classes must be given as space separated words in the class field. All remaining fields are included as attributes. With this change, the following lines now create equal elements:
```
pandoc.Span('test', {id = 'test', class = 'a b', check = 1})
pandoc.Span('test', pandoc.Attr('test', {'a','b'}, {check = 1}))
```
  This also works when using the attr setter:
```
local span = pandoc.Span 'text'
span.attr = {id = 'test', class = 'a b', check = 1}
```
  Furthermore, the attributes field of AST elements can now be a plain key-value table even when using the attributes accessor:
```
local span = pandoc.Span 'test'
span.attributes = {check = 1}   -- works as expected now
```
- Export make_sections, remove hierarchicalize. Lua filters that use hierarchicalize will need to be rewritten to use make_sections.
- Add a clone() method to all AST elements (Albert Krewinkel, #5568).
- Fix Lua function names in pandoc.system (niszet). Change get_current_directory to get_working_directory and with_temp_directory to with_temporary_directory, to conform to the manual.
Text.Pandoc.Error:
- Add constructors PandocUnknownReaderError, PandocUnknownWriterError, PandocUnsupportedExtensionError. [API change].
- Better message for PandocShouldNeverHappenError.
- Better message for PandocTemplateError.
Text.Pandoc.Emoji:
- Update emoji list (#5666). Done using new tools/emojis.hs, which uses the list from the gem GitHub uses. Future updates can be done with this tool.
Text.Pandoc.PDF:
- Pass value of --dpi to rsvg-convert when converting SVG to PDF in the process of creating a PDF (#5721).
Text.Pandoc.Shared:
- Replace Element and makeHierarchical with makeSections. Now that we have Divs, we can use them to represent the structure of sections, and we don't need a special Element type. makeSections reorganizes a block list, adding Divs with class section around sections, and adding numbering if needed. This change also fixes some longstanding issues recognizing section structure when the document contains Divs (#3057, see also #997).
- Remove Element type [API change]
- Remove makeHierarchicalize [API change]
- Add makeSections [API change]
- Export deLink [API change]
- Make filterIpynbOutput strip ANSI escapes from code in output for non-ipynb formats, when the default "best" option is used with --ipynb-output (#5633).
- Fix camelCaseToHyphenated so it handles ABCDef better.
- Improve isTight (#5857). If a list has an empty item, this should not count against its being a tight list.
- Export htmlSpanLikeElements [API change] (Daniele D'Orazio, #5796). This is a mapping of HTML span-like elements that are internally represented as a Span with a single class.
- Change the implementation of htmlSpanLikeElements to retain classes and attributes (#5882, Florian Beeres).
Text.Pandoc.Slides: recognize content in Divs when determining slide level.
Text.Pandoc.SelfContained:
- Omit content-type on type attribute for <style> (#5725). It doesn't seem to be valid for HTML5, and as a result Chrome ignores the style element.
Text.Pandoc.Pretty has been removed [API change]. We now use the new external doclayout module instead.
Text.Pandoc.Writers.Shared:
- Remove metaToJSON, metaToJSON' [API change].
- Modify addVariablesToContext, defField, setField, getField, resetField to work with Context rather than JSON values. [API change]
- Export new function endsWithPlain [API change].
- Change gridTables so it does better at keeping the widths of columns (#4320) and does better at figuring out column widths when no widths are given (#5899).
Text.Pandoc.Options
- Change type of writerTemplate to Maybe Template instead of Maybe String.
- Change To/FromJSON instances for HTMLMathMethod, CiteMethod, ObfuscationMethod, TrackChanges, WrapOption, TopLevelDivision, ReferenceLocation, HTMLSlideVariant (#5790). In each case we use lowercase (or hyphenated lowercase) for constructors to line up more closely with command-line option values. This is a breaking change for those who manually decode or encode JSON for these data types (e.g. for ReaderOptions or WriterOptions).
Text.Pandoc.Filters:
- Add FromYAML instance for Filter.
- applyFilters: Add and apply filters in order (not reversed) This changes applyFilters from Text.Pandoc.Filter so that it does a left fold rather than a right fold, applying the filters in the order listed.
Text.Pandoc.XML:
- Change toEntities to emit numerical hex character references (#5718).
Text.Pandoc.Highlighting:
- Add additional listings languages (Wandmalfarbe).
Text.Pandoc.MediaBag:
- Some of the types using Strings were switched to use FilePath instead (Christian Despres, #5884).
Text.Pandoc.Templates:
- Don't import/export varListToJSON [API change]. It is removed in doctemplates >= 0.3.
- Change type of renderTemplate' [API change]. Return value is now Text rather than being polymorphic. This makes room for upcoming removal of the TemplateTarget class from doctemplates.
Text.Pandoc.App.Opt [API changes]:
- More convenient To/FromJSON instances. Make the field names like strip-empty-paragraphs rather than optStripEmptyParagraphs. Anyone who is using JSON serialization of Opt will need to adjust things accordingly.
- Change optHighlightStyle to a Maybe String instead of Maybe Style. Do the parsing/loading of themes later, after option parsing.
- Remove optBaseHeaderLevel from Opt. We now just use optShiftHeadingLevelBy, to avoid redundancy.
- Change optShiftHeadingLevel to optShiftHeadingLevelBy to match the option.
- Custom FromJSON instance for LineEnding, so either CRLF or crlf will work.
- Change optVariables from [(String, String)] to Context Text.
- Change optMetadata to Meta, to allow structured values. The current behavior of the --metadata option stays the same.
- Rename optReader, optWriter as optFrom, optTo.
- Add FromYAML instances to Opt and to all subsidiary types.
- Rename optMetadataFile to optMetadataFiles.
- Rename optPDFEngineArgs to optPDFEngineOpts.
- Rename optWrapText to optWrap.
- Add IpynbOutput enumerated type: use this instead of a string for optIpynbOutput.
- Change optInputFiles to a Maybe [FilePath] (#5888) [API change]. Nothing means: nothing specified. Just [] means: an empty list specified (e.g. in defaults).
- List fields in Opt so they aren't reversed (#5881) [API change]. Previously optIncludeInHeader, etc. were in reverse order.
- The sourcefile variable is now always a list. It used to be sometimes a string, sometimes a list (when there was more than one).
Template changes:
- default.latex: added code for cslreferences environment, to be used for pandoc-citeproc references. A csl-hanging-indent variable (set automatically if there is a hanging-ident class on the references Div) controls whether contents of this environment receive a hanging indent.
- default.latex: Add space as default option for xeCJK, so that spaces between words are preserved (#5855, jeongminkim-islab). This is necessary for Korean.
- default.latex: Remove include of grffile (#5848). This package used to be needed for proper handling of image filenames containing periods (in addition to the period before the extension). It no longer works with the latest LaTeX kernel and graphicx, so we have removed it. Future versions of graphicx will handle these filenames without the need for grffile.
- default.context: add a saner default for page numbers. Previously they appeared centered at the top of the page; now we put them centered at the bottom, unless the pagenumbering variable is set.
- default.context: define a start-stop-pair cslreferences to allow for hanging indents in the bibliography (#5875, Denis Maier).
- default.ms: update defaults. Use Palatino font, use slightly wider interparagraph space, don't indent paragraphs, and put page numbers on the bottom. This brings ms output closer to default LaTeX output.
- default.revealjs: add navigationMode (Mauro Bieg, #5657).
- default.muse: handle multiple authors better.
- docbook4, docbook5 templates: add indentation to body.
- HTML-based templates: use styles.html partial to avoid code duplication.
- HTML-based templates: change indentation of styles in template.
reference.docx (#5820):
- Change Block Text (block quote) style so that the same font is used as in the body text, and the block text is indented left and right.
- All headings now have a uniform color.
- Level-1 headings no longer set w:themeShade="B5".
- Level-2 headings are now 14 point rather than 16 point.
- Level-3 headings are now 12 point rather than 14 point.
- Level-4 headings are italic rather than bold.
epub.css: Add CSS for hanging-indent div to support pandoc-citeproc's new hanging indents.
pandoc.cabal:
- Repeat ghc-options in all stanzas.
- Remove conditionals for ghc < 8 (Albert Krewinkel, #5693).
- Compile with -Wcpp-undef and -fhide-source-paths when possible (Albert Krewinkel).
- Add cabal.project to extra-source-files (Albert Krewinkel).
- Add dependency on skylighting-core (#5729). Even though it shouldn't be needed, some tools require it.
- Require latest pandoc-types, texmath, skylighting, haddock-library.
- Ensure TemplateHaskell is added to other-extensions when it is used (Vanessa McHale, #5728).
- Remove derive_json_via_th flag; always use TH. This cuts down on code duplication and reduces the chance for errors. See #4083.
Makefile:
- Add ghci target.
- Add ghcid target.
- Remove references to obsolete flag (#5694).
Benchmarks: fix failure on ipynb.
Use MathJax 3 (zorkow).
KaTeX math: respect classoption=fleqn variable, bump KaTeX version to 0.11.1 (#5815, Mauro Bieg).
Fix redundant constraint compiler warnings (Pete Ryland, #5625).
Use throwError instead of fail when appropriate.
Use Prelude.fail to avoid ambiguity with fail from GHC.Base.
Add diff-zip.sh to tools (John MacFarlane, Agustín Martín Barbero). This is intended to make it easier to test differences in zip containers, like epub, docx, or odt.
Add .gitattributes (#5747). This ensures that the golden files in test/fb2/reader/ don't have newlines converted. This should fix a test failure on GitHub CI with Windows.
Reorder options in --help.
Revise code for HsYAML-0.2.0.0 (@vijayphoenix, #5704).
Remove blank line in code example in Haddocks (Leif Metcalf, #5679).
Fix trypandoc with getReader/getWriter changes.
Allow building pandoc with GHC 8.8.
linux tarball: add architecture -amd64 to filename. Now it will be: pandoc-VERSION-linux-ARCH.tar.gz.
MANUAL.txt:
- Add section for exit codes.
- Document some pptx limitations in slide show section: No incremental display (#5689). No pause with . . . (#5701).
- reveal.js flags (Mauro Bieg, #5653).
- Document addition of data- prefix to unknown attributes in HTML5.
- Link to YAML spec (Mauro Bieg, #5687).
- Fix capitalization of "Linux" (#5859, Marcus Stollsteimer).
- Use a table for exit codes.
- Put all template variable docs into one section.
- Use ATX headers consistently.
- Add fuller documentation of templates (#5779), including new template syntax, partials, etc.
- Add documentation for the variable hyperrefoptions (Wandmalfarbe).
- Clarify when macro definitions are passed as raw latex. In Markdown input, they are always passed through. In LaTeX, only if latex_macros is disabled.
- Clarify that --dpi provides a default and doesn't override dpi values specified in the images themselves (#5721).
- Document how to use custom writers with --standalone (#5866).
- Clarify --preserve-tabs default.
INSTALL.md:
- Fix instructions for libicu.
- Add Void Linux instructions (Volodymyr Kozachnyskyi).
CONTRIBUTING.md:
- Add information on tests (Agustín Martín Barbero, #5652).
- Add information about command test naming to CONTRIBUTING (Florian B).
Fix typos in changelog and comments (#5896, Brian Wignall).
doc/lua-filters.md:
- Fix mistakes in mediabag module docs (#5851, Albert Krewinkel).
- Improve metadata replacement example in lua-filters doc (#5851).
- Mention which Lua version is shipped with pandoc (Albert Krewinkel, #5892).

pandoc 2.7.3 (2019-06-11)

Add jira (Atlassian's Jira wiki markup) as output format (#2497, Albert Krewinkel).
Add tex_math_dollars to multimarkdownExtensions (#5512). This form is now supported in multimarkdown, in addition to tex_math_double_backslash.
Fix --self-contained so it works when output format has extensions. Previously if you used --self-contained with html-smart or html+smart, it wouldn't work.
Add template variable curdir with working directory from which pandoc is run (#5464).
Markdown reader: don't create implicit reference for empty header (#5549).
Muse reader: allow images inside link descriptions (Alexander Krotov).
HTML reader: epub related fixes.
- With epub extensions, check for epub:type in addition to type.
- Fix problem with noteref parsing which caused block-level content to be eaten with the noteref.
- Rename pAnyTag to pAny.
- Refactor note resolution.
- Trim definition list terms (Alexander Krotov).
LaTeX reader:
- Add braces when resolving \DeclareMathOperator (#5441). These seem to be needed for xelatex but not pdflatex.
- Allow newlines in \mintinline.
- Pass through unknown listings language as class (#5540). Previously if the language was not in the list of languages supported by listings, it would not be added as a class, so highlighting would not be triggered.
- rawLaTeXInline: Include trailing {}s in raw latex commands (#5439). This change affects the markdown reader and other readers that allow raw LaTeX. Previously, trailing {} would be included for unknown commands, but not for known commands. However, they are sometimes used to avoid a trailing space after the command. The chances that a {} after a LaTeX command is not part of the command are very small.
MediaWiki reader: handle multiple attributes in table row (#5471, chinapedia).
Docx reader: Add support for w:rtl (#5545). Elements with this property are put into Span inlines with dir="rtl".
DocBook reader: Issue IgnoredElement warnings.
Org reader (Albert Krewinkel):
- Fix planning elements in headers level 3 and higher (#5494). Planning info is now always placed before the subtree contents. Previously, the planning info was placed after the content if the header's subtree was converted to a list, which happens with headers of level 3 and higher per default.
- Omit, but warn about unknown export options. Unknown export options are properly ignored and omitted from the output.
- Prefer plain symbols over math symbols (#5483). Symbols like \alpha are output plain and unemphasized, not as math.
- Recognize emphasis after TODO/DONE keyword (#5484).
FB2 reader:
- Skip unknown elements rather than throwing errors (#5560). Sometimes custom elements are used (e.g. id element inside author); previously the reader would halt with an error. Now it skips the element and issues an IgnoredElement warning.
- Parse notes (#5493, Alexander Krotov).
- Internal improvements (Alexander Krotov).
OpenDocument writer: Roll back automatic figure/table numbering (#5474). This was added in pandoc 2.7.2, but it makes it impossible to use pandoc-crossref. So this has been rolled back for now, until we find a good solution to make this behavior optional (or a creative way to let pandoc-crossref and this feature to coexist).
New module Text.Pandoc.Writers.Jira, exporting writeJira [API change] (Albert Krewinkel).
EPUB writer:
- Don't include 'landmarks' if there aren't any. Previously we could get an empty ol element, which caused validation errors with epubcheck.
- Ensure unique ids for styleesheets in content.opf (#5463).
- Make stylesheet link compatible with kindlegen (#5466, Eric Schrijver). Pandoc omitted type="text/css" from both <style> and <rel="stylesheet"> elements in all templates, which is valid according to the spec. However, Amazon’s kindlegen software relies on this attribute on <link> elements when detecting stylesheets to include.
HTML writer:
- Output video and audio elements depending on file extension of the image path (Mauro Bieg).
- Emit empty alt tag in figures (#5518, Mauro Bieg). The same text is already in the
  and screen-readers would read it twice, see #4737.
  
  Don't add variation selector if it's already there. This fixes round-trip failures.
  
  Prevent gratuitous emojification on iOS (#5469). iOS chooses to render a number of Unicode entities, including '↩', as big colorful emoji. This can be defeated by appending Unicode VARIATION SELECTOR-15'/'VARIATION SELECTOR-16'. So we now append this character when escaping strings, for both '↩' and '↔'. If other characters prove problematic, they can simply be added to needsVariationSelector. + Add class="heading" to level 7+ Headers rendered as <p> elements (#5457).
  RST writer: treat Span with no attributes as transparent (#5446). Previously an Emph inside a Span was being treated as nested markup and ignored. With this patch, the Span is just ignored.
  LaTeX writer:
  - Include inline code attributes with --listings (#5420).
  - Don't produce columns environment unless beamer (#5485).
  - Fix footnote in image caption. Regression: the fix for #4683 broke this case.
  - Don't highlight code in headings (#5574). This causes compilation errors.
  - Use \mbox to get proper behavior inside \sout (#5529).
  EPUB writer: Fix document section assignments (#5546). For example, introduction should go in bodymatter, not frontmatter, and epigraph, conclusion, and afterward should go in bodymatter, not backmatter. For the full list of assignments, see the manual.
  Markdown writer:
  - Add backslashes to avoid unwanted interpretation of definition list terms as other kinds of block (#554).
  - Ensure the code fence is long enough (#5519). Previously too few backticks were used when the code block contained an indented line of backticks. (Ditto tildes.)
  - Handle labels with integer names (Jesse Rosenthal, #5495). Previously if labels had integer names, it could produce a conflict with auto-labeled reference links. Now we test for a conflict and find the next available integer. This involves adding a new state variable stPrevRefs to keep track of refs used in other document parts when using --reference-location=block|section
  Textile writer: fix closing tag for math output (Albert Krewinkel). Opening and closing tag for math output match now.
  
  Org writer: always indent src blocks content by 2 spaces (#5440, Albert Krewinkel). Emacs always uses two spaces when indenting the content of src blocks, e.g., when exiting a C-c ' edit-buffer. Pandoc used to indent contents by the space-equivalent of one tab, but now always uses two spaces, too.
  Asciidoc writer:
  - Use `+...+` form for inline code. The old `a__b__c` yields emphasis inside code in asciidoc. To get a pure literal code span, use `+a__b__c+`.
  - Use proper smart quotes with asciidoctor (#5487). Asciidoctor has a different format for smart quotes.
  - Use doubled ## when necessary for spans (#5566).
  - Ensure correct nesting of strong/emph (#5565): strong must be the outer element.
  JATS writer:
  - Wrap elements with p when needed (#5570). The JATS spec restricts what elements can go inside fn and list-item. So we wrap other elements inside <p specific-use="wrapper"> when needed.
  - Properly handle footnotes (#5511) according to "best practice." (Group them at the end in <fn-group> and use <xref> elements to link them.)
  - Fix citations with PMID so they validate (#5481). This includes an update to data/jats.csl.
  - Ensure validity of <pub-date> by parsing the date and extracting year, month, and day, as expected. Also add an iso-8601-date attribute automatically.
  - Don't use <break> element for LineBreak. It is only allowed in a few special contexts, and not in <p> elements.
  - Don't make <string-name> a child of <string>, which is illegal.
  FB2 writer:
  - Do not wrap note references into <sup> and brackets (Alexander Krotov). Existing FB2 readers, such as FBReader, already display links with type="note" as a superscript.
  - Use genre metadata field (#5478).
  Muse writer: do not escape empty line after <br> (Alexander Krotov).
  
  Add unicode code point in "Missing character" warning (#5538). If the character isn't in the console font, the message is pretty useless, so we show the code point for anything non-ASCII.
  
  Lua: add Version type to simplify comparisons (Albert Krewinkel). Version specifiers like PANDOC_VERSION and PANDOC_API_VERSION are turned into Version objects. The objects simplify version-appropriate comparisons while maintaining backward-compatibility. A function pandoc.types.Version is added as part of the newly introduced module pandoc.types, allowing users to create version objects in scripts.
  pandoc lua module (Albert Krewinkel):
  - Fix deletion of nonexistent attributes (#5569).
  - Better tests for Attr and AttributeList.
  pandoc.mediabag lua module (Albert Krewinkel):
  - Add function delete for deleting a single item.
  - Add function empty for removing all entries.
  - Add function items for iterating over mediabag.
  Text.Pandoc.Class: Fix handling of file: URL scheme in downloadOrRead (#5517, Mauro Bieg). Previously file:/ URLs were handled wrongly and pandoc attempted to make HTTP requests, which failed.
  
  Text.Pandoc.MIME: add mediaCategory [API change] (Mauro Bieg).
  Text.Pandoc.Shared:
  - Add onlySimpleTableCells [API change] (Mauro Bieg) and use this to consolidate simple-table detection (#5524). This fixes an inconsistency in the HTML reader, which did not treat tables with <p> inside cells as simple.
  - metaToJSON: treat digits starting with 0 as a string, not a number (#5479). This fixes a regression in YAML metadata in pandoc 2.7.2.
  Text.Pandoc.Logging: Add IgnoredElement constructor for LogMessage. SkippedConetnt doesn't work for some XML-based readers which don't have access to parsec source positions.
  
  Text.Pandoc.Asciify: Add Turkish undotted-i (#5433, Mauro Bieg).
  
  Improve output of Lua tests (#5499, Albert Krewinkel). This makes use of tasty-lua, a package to write tests in Lua and integrate the results into Tasty output. Test output becomes more informative: individual tests and test groups become visible in test output. Failures are reported with helpful error messages.
  Lua: add pandoc.system module (#5468, Albert Krewinkel). The system Lua module provides utility functions to interact with the operating- and file system. E.g. print(pandoc.system.get_current_directory()) or
```
    pandoc.system.with_temporary_directory('tikz', function (dir)
      -- write and compile a TikZ file with pdflatex
    end)
```
  LaTeX template: Add pdflang to hypersetup if lang is set (#5443).
  
  beamer template: Fix using Beamer with geometry (#5505, Daniel Maslowski). Beamer already loads geometry, so we need to use the \geometry command to set geometry options.
  EPUB2/3 templates: Move inline styles to default epub.css (#5466). NOTE: Those who use a custom CSS stylesheet with EPUB should add these lines:
```
code{ white-space: pre-wrap; }
span.smallcaps{ font-variant: small-caps; }
span.underline{ text-decoration: underline; }
q { quotes: "“" "”" "‘" "’"; }
div.column{ display: inline-block; vertical-align: top; width: 50%; }
```
  reveal.js template:
  - Updates for revealjs 3.8.0 (#5435, ebiim).
  - Remove reference to head.min.js (#5448, Winnie Hellmann). NOTE: users will need to update reveal.js to at least 3.8.0 for their presentations generated with this version of pandoc to work correctly.
  Text.Pandoc.PDF:
  - Replace </> with literal / (#5451). We use forward-slash for a directory separator in tmpDir, even on Windows (because that's what tex likes). So we should not put a backslash between the tmpDir and the filename on Windows. This is harmless enough in normal Windows setups, but it breaks on Cygwin. Thanks to @cc2x for noticing and diagnosing the problem.
  - Allow use of -output-directory in --pdf-engine-opt (#5462). This is currently possible with mklatex and -outdir, but was not yet possible with xelatex and -output-directory.
  - For PDF via ms/pdfroff, make TOC appear at beginning and in PDF bookmarks (#5553). Previously the TOC appeared at the end of the document, and was not bookmarked. To keep it at the end, add --pdf-engine-opt=--no-toc-relocation to your command line.
  Fix broken links in documents (#5473, Shim Myeongseob). Also, use absolute links to pandoc.org when possible, so that the links can be followed by people viewing these documents on GitHub.
  Improved sample lua tikz filter in lua-filters docs (#5445, Matthew Doty). There are three changes:
  - It only processes elements which begin with \begin{tikzpicture}
  - It uses pdf2svg instead of imagemagick to preserve fidelity
  - The images produced have transparent backgrounds
  MANUAL.txt:
  - Add note about title-meta, author-meta, date-meta (#5486).
  - Fix typo (#5489, Christian Krause).
  add test/tables.xwiki to git and pandoc.cabal (#5498, Mauro Bieg).
  
  Disable missing-home-modules warning in stack.yaml. Otherwise stack ghci fails.
  pandoc 2.7.2 (2019-04-05)
  - Add XWiki writer (#1800, Derek Chen-Becker). Add Text.Pandoc.Writers.XWiki, exporting writeXWiki [API change].
  - Dokuwiki Reader: parse single curly brace (#5416, Mauro Bieg).
  - Vimwiki reader: improve handling of internal links (#5414). We no longer append .html to link targets, and we add a title wikilink. This mirrors behavior of other wiki readers. Generally the .html extension is not wanted. It may be important for output to HTML in certain circumstances, but it can always be added using a filter that matches on links with title wikilink.
    
    If your workflow requires the current behavior, here is a lua filter that will add the .html extension:
```
function Link(el)
  if el.title == 'wikilink' then
    el.target = el.target .. ".html"
  end
  return el
end
```
  - ipynb reader:
    - Use format ipynb for raw cell where no format given.
    - Avoid introducing spurious .0 on integers in metadata.
  - Markdown reader: fenced div takes priority over setext header.
  - HTML reader: read data-foo attribute into foo (#5392). The HTML writer adds the data- prefix for HTML5 for nonstandard attributes. But the attributes are represented in the AST without the data- prefix, so we should strip this when reading HTML.
  - LaTeX reader: Improve autolink detection (#5340).
  - PowerPoint writer (Jesse Rosenthal):
    - Expand builtin reference doc to model all layouts. The previous built-in reference doc had only title and content layouts. Add in a section-header slide and a two-content slide, so users can more easily modify it to build their own templates.
    - Always open up in slide view. When editing a template/reference-doc, the user might be in Master view, but when producing a slide show, it is assumed that slide view will be desired.
    - Remove handoutsMasterList from template presentation.xml
    - Fix numerous errors in templating (#5402). Previously, some templates produced by Office 365 (MacOS) would not render with --reference-doc correctly. We now apply correct shapes for content, and build shape trees correctly.
    - Make default placeholder type for template lookup.
    - Apply speaker notes to metadata slide if applicable.
    - Test for speaker notes after breaking header.
    - Correctly handle notes after section-title header. Previously, if notes came after a section-title header (ie, a level-1 header in a slide-level=2 presentation), they would go on the next slide. This keeps them on the slide with the header.
    - Internal improvements.
  - ipynb writer:
    - Use format ipynb for raw cell where no format given. According to nbformat docs, this is supposed to render in every format. We don't do that, but we at least preserve it as a raw block in markdown, so you can round-trip.
    - Consolidate adjacent raw blocks. Sometimes pandoc creates two HTML blocks, e.g. one for the open tag and one for a close tag. If these aren't consolidated, only one will show up in output cell.
    - Fixed carry-over of nbformat from metadata.
    - Preserve nbformat_minor if it's given. This helps with round-tripping.
  - LaTeX writer:
    - Avoid inadvertently creating ? or ! ligatures (#5407). These are upside down ? and !, resp.
    - Fix footnotes in table caption and cells (#5367). This fixes a bug wherein footnotes appeared in the wrong order, and with duplicate numbers, when in table captions and cells. We now use regular \footnote commands, even in the table caption and the minipages containing cells. Apparently longtable knows how to handle this.
  - HTML writer: Don't add data- prefix to RDFa attributes (#5403).
  - JATS writer: Ensure that plain strings go inside <pub-id> tag (#5397).
  - Markdown writer:
    - Better rendering of numbers (#5398). If the number is integral, we render it as an integral not a float.
    - Proper rendering of empty map in YAML metadata (#5398). Should be {}, not empty string.
    - Properly escape attributes in Markdown writer (#5369).
    - Be sure implicit figures work in list contexts (#5368). Previously they would sometimes not work: e.g., when they occurred in final paragraphs in lists that were originally parsed as Plain and converted later using PlainToPara.
  - Docx writer: Use w:br without attributes for line breaks (#5377). We previously added the attribute type="textWrapping", but this causes problems on Word Online.
  - LaTeX template (Andrew Dunning):
    - Ensure correct heading/table order (#5365). Improve workaround (#1658) for tables following headings. The new solution works whether or not the indent variable is enabled.
    - Remove subparagraph variable. The default is now to use run-in style for level 4 and 5 headings (\paragraph and \subparagraph). To get the previous default behavior (where these were formatted as blocks, like \subsubsection), set the block-headings variable.
    - Add pandoc to PDF metadata (#5388).
    - Group graphics-related code (#5389).
    - Move \setstretch after front matter (#5179). Ensures that \maketitle, \tableofcontents, and so forth are not affected by changes to line spacing.
  - Update data/jats.csl to avoid commas between name-part elements (#5397).
  - Add support for golang (go) with --listings (#5427).
  - Text.Pandoc.Shared - improve metaToJSON behavior with numbers. We now do a better job marshalling numbers from MetaString or MetaInlines into JSON Number.
  - Text.Pandoc.Writers.Shared: metaValueToJSON: use Number Values for integers. Pandoc's MetaValue doesn't have a distinguished number type, so numbers are put in MetaStrings. If the MetaString consists entirely of digits, we convert it to a Number. We should probably consider adding a MetaNumber constructor to MetaValue, for better round-tripping with JSON etc. This change aids round-tripping in ipynb metadata fields, like toc_depth.
  - Text.Pandoc.Class: fetchItem: don't treat UNC paths as protocol-relative URLs (#5127). These are paths beginning //?/UNC/....
  - Text.Pandoc.ImageSize: Improve pdfSize so it handles a wider range of PDFs (#4322, with help from Richard Davis).
  - Text.Pandoc.Pretty: avoid stack overflow by using strict sum (#5401).
  - Fix harmless error in file-scope code (#5422).
  - MANUAL.txt:
    - Improve 'header' and 'heading' usage (#5423, Andrew Dunning). The term 'header' was being used where 'heading' is more appropriate.
    - Add paragraph on options affecting markdown in ipynb.
  - stack.yaml - remove -Wmissing-home-modules This seems to cause problems with stack ghci. Remove RTS options.
  - Add ghc-options to cabal.project.
  - appveyor.yml - use ghc 8.6.4. Fixes segfault issues on Windows (#5037).
  - linux build process: Remove clone of pandoc-citeproc (#5366). It wasn't being used; cabal.project specifies the version to use.
  pandoc 2.7.1 (2019-03-14)
  - Add tectonic as an option for --pdf-engine (#5345, Cormac Relf). Runs tectonic on STDIN instead of a temporary .tex file, so that it looks in the working directory for \include and \input like the rest of the engines. Allows overriding the output directory args with --pdf-engine-opt=--outdir --pdf-engine-opt="$DIR".
  - Allow -o/--output to be used with --print-default-data-file, --print-highlighting-style, --print-default-template. Note that -o must occur BEFORE the --print* command on the command line (this is documented, #5357).
  - LaTeX reader:
    - Support \underline, \ul, \uline (#5359, Paul Tilley). These are parsed as a Span with class underline, as with other readers.
    - Ensure that \Footcite and \Footcites get put in a note.
  - ipynb reader:
    - Remove sensitivity to raw_html, raw_tex extensions. We now include every output format. Pruning is handled by --ipynb-output.
    - Better handling of cell metadata. We now include even complex cell metadata in the Div's attributes (as JSON, in complex cases, or as plain strings in simple cases).
  - ipynb writer:
    - Recurse into native divs for output cell data (#5354).
    - Render cell metadata fields from div attributes.
  - Docx writer: avoid extra copy of abstractNum and num elements in numbering.xml. This caused pandoc-produced docx files to be uneditable using Word Online (#5358).
  - Markdown writer: improve handling of raw blocks/inline. We now emit raw content using raw_attribute when no more direct method is available. Use of raw_attribute can be forced by disabling raw_html and raw_tex.
  - LaTeX writer: Add classes for frontmatter support (#5353, Andrew Dunning) and remove frontmatter from scrreprt.
  - LaTeX template:
    - Improve readability (#5363, Andrew Dunning).
    - Robust section numbering removal (#5351, Andrew Dunning). Ensures that section numbering does not reappear with custom section levels. See https://tex.stackexchange.com/questions/473653/.
    - Better handling of front/main/backmatter (#5348). In pandoc 2.7 we assumed that every class with chapters would accept \frontmatter, \mainmatter, and \backmatter. This is not so (e.g. report does not). So pandoc 2.7 breaks on report class by including an unsupported command. Instead of the book-class variable, we use two variables, has-chapters and has-frontmatter, and set these intelligently in the writer.
  - Text.Pandoc.Shared: Improve filterIpynbOutput. Ensure that images are prioritized over text. best should include everything for ipynb.
  - Tests.Old: specify --data-dir=../data to ensure tests can find data files even if they haven't been installed. Remove old pandoc_datadir environment variable, which hasn't done anything for a long time.
  - MANUAL.txt: Add recommendation to use raw_attribute with ipynb (#5354).
  - Use cmark-gfm-hs 0.1.8 (note that 0.1.7 is buggy).
  - Use latest pandoc-citeproc, texmath.
  pandoc 2.7 (2019-03-03)
  - Use XDG data directory for user data directory (#3582). Instead of $HOME/.pandoc, the default user data directory is now $XDG_DATA_HOME/pandoc, where XDG_DATA_HOME defaults to $HOME/.local/share but can be overridden by setting the environment variable. If this directory is missing, then $HOME/.pandoc is searched instead, for backwards compatibility. However, we recommend moving local pandoc data files from $HOME/.pandoc to $HOME/.local/share/pandoc. On Windows the default user data directory remains the same.
  - Slide show formats behavior change: content under headers less than slide level is no longer ignored, but included in the title slide (for HTML slide shows) or in a slide after the title slide (for beamer). This change makes possible 2D reveal.js slideshows with content in the top slide on each stack (#4317, #5237).
  - Add command line option --ipynb-output=all|none|best (#5339). Output cells in ipynb notebooks often contain several different versions of an output, with different MIME types, e.g. an HTML table and a plain-text fallback. Specifying --ipynb-output=best (the default) ensures that the best version for the output format is used. all includes all versions, and none suppresses them all, leaving output cells empty.
  - asciidoctor is now an output format separate from asciidoc, to accommodate some minor implementation-specific differences (currently just in the treatment of display math).
  - Add latexmk as an option for --pdf-engine (#3195). Note that you can use --pdf-engine-opt=-outdir=bar to specify a persistent temp directory.
  - Markdown reader:
    - Improve tight/loose list handling (#5285). Previously the algorithm allowed list items with a mix of Para and Plain, which is never wanted.
    - Add newline when parsing blocks in YAML (#5271). Otherwise last block gets parsed as a Plain rather than a Para. This is a regression in pandoc 2.x. This patch restores pandoc 1.19 behavior.
    - Make yamlToMeta respect extensions (#5272, Mauro Bieg). This adds a ReaderOptions parameter to yamlToMeta [API change].
    - Fix bug parsing fenced code blocks (#5304). Previously parsing would break if the code block contained a string of backticks of sufficient length followed by something other than end of line.
  - LaTeX reader: don't let \egroup match {. braced now actually requires nested braces. Otherwise some legitimate command and environment definitions can break.
  - Docx reader (Jesse Rosenthal):
    - Rename getDocumentPath as getDocumentXmlPath.
    - Use field notation for setting ReaderEnv.
    - Figure out document.xml path once at the beginning of parsing, and add it to the environment, so we can avoid repeated lookups.
    - Dynamically determine main document xml path (#5277). The desktop Word program places the main document file in word/document.xml, but the online word places it in word/document2.xml. This file path is actually stated in the root _rels/.rels file, in the Relationship element with an http://../officedocument type.
    - Fix paths in archive to prevent Windows failure (#5277). Some paths in archives are absolute (have an opening slash) which, for reasons unknown, produces a failure in the test suite on MS Windows. This fixes that by removing the leading slash if it exists.
    - Add comments to aid code readability.
    - Trim space inside the last inline (#5273).
    - Unwrap sdt elements in footnotes and comments (#5302).
  - Muse reader (Alexander Krotov):
    - Test that block level markup does not break <verbatim>.
    - Add secondary note support.
  - ipynb reader: handle images referring to attachments. Previously we didn't strip off the attachment: prefix, so even though the attachment was available in the mediabag, pandoc couldn't find it.
  - JATS reader:
    - Fix parsing of figures (#5321). This ensures that a figure containing a single image is parsed as a pandoc "implicit figure" (i.e., a Para with a single Image whose title attribute begins with fig:). More complex figures will still be parsed as divs.
    - Support fig-group block element (#5317).
    - Handle citations with multiple references (#5310). The rid attribute can have a space-separated list of ids.
  - AsciiDoc Writer: Add writeAsciiDoctor [API change, Tarik Graba]. Handle display math appropriately for Asciidoctor.
  - JATS writer: wrap figure caption in <p> to fix validation (#5290, Mauro Bieg).
  - HTML writer:
    - Implement WAI-ARIA roles for (end)notes, citations, and bibliography (#4213). Note that doc-biblioref is only used when link-citations produces links, since it belongs on links.
    - Include content (including speaker notes) in title slides (#4317, #5237).
  - ipynb writer:
    - Ensure final newline.
    - Only include metadata under jupyter field.
    - Don't create attachments for images with absolute URIs, including data: URIs (#5303).
    - Keep plain text fallbacks in output even if a richer format is included (#5293). We don't know what output format will be needed. See the --ipynb-output command line option for a way to control what formats are included in the output.
  - Markdown writer: use markdown="1" when appropriate for Divs: when native_divs and markdown_in_html_blocks are disabled but raw_html and markdown_attribute are enabled.
  - LaTeX writer:
    - Use right fold for escapeString. This is more elegant than the explicit recursive code we were using.
    - Avoid {} after control sequences when escaping. \ldots{}. doesn't behave as well as \ldots. with the latex ellipsis package. This patch causes pandoc to avoid emitting the {} when it is not necessary. Now \ldots and other control sequences used in escaping will be followed by either a {}, a space, or nothing, depending on context.
    - For beamer, include contents under headers superordinate to slidelevel (#4317). Currently we keep the fancy title slide, and add a new slide with the same title and whatever content was under the header.
  - Powerpoint writer (Jesse Rosenthal): support underlines. Use span with single class "underline" as in docx writer.
  - Muse writer: escape secondary notes (Alexander Krotov).
  - FB2 writer: add section identifiers support (#5229, John KetzerX).
  - Make --fail-if-warnings work for PDF output (#5343).
  - Lua filters (Albert Krewinkel):
    - Load module pandoc before calling init.lua (#5287). The file init.lua in pandoc's data directory is run as part of pandoc's Lua initialization process. Previously, the pandoc module was loaded in init.lua, and the structure for marshaling was set up after. This allowed simple patching of element marshaling, but made using init.lua more difficult. Now, all required modules are now loaded before calling init.lua. The file can be used entirely for user customization. Patching marshaling functions, while discouraged, is still possible via the debug module.
    - All Lua modules bundled with pandoc, i.e., pandoc.List, pandoc.mediabag, pandoc.utils, and text are re-exported from the pandoc module. They are assigned to the fields List, mediabag, utils, and text, respectively.
  - Text.Pandoc.Lua (Albert Krewinkel):
    - Split StackInstances into smaller Marshaling modules.
    - Get CommonState from Lua global. This allows more control over the common state from within Lua scripts.
  - LaTeX template:
    - Support the subject metadata variable (#5289, Pascal Wagler).
    - Add \frontmatter, \mainmatter, \backmatter for book classes (#5306).
  - epub3 template: Add titlepage class to section (#5269).
  - HTML5 template: Add ARIA role doc-toc for table of contents (#4213).
  - Make --metadata-file use selected extensions (#5279, #5272, Mauro Bieg).
  - Text.Pandoc.Shared:
    - Remove withTempDir [API change].
    - Add new exported function defaultUserDataDirs [API change].
    - Add filterIpynbOutput [API change].
    - compactify: Avoid lists with a mix of Plain and Para elements (#5285).
  - Text.Pandoc.Translations: reorder alphabetically and remove Author (#5334, Mauro Bieg).
  - Text.Pandoc.Extensions:
    - More carefully groom ipynb default extensions.
    - Add all_symbols_escapable to githubMarkdownExtensions.
  - Text.Pandoc.PDF:
    - Use system temp directory when possible (#1192). Previously we created temp dirs in the working directory, partly (a) because there were problems using the system temp directory on Windows, when their pathnames included tildes, and partly (b) because programs like epstopdf.pl would not be allowed to write to directories outside the working directory in restricted mode. We now (a) use the system temp dir except when the path includes tildes, and (b) set TEXMFOUTPUT when creating the PDF, so that subsidiary programs can use the system temp directory. This addresses problems that occurred when pandoc was used in a synced directory (such as Dropbox).
    - Change types of subsidiary functions to PandocIO, to allow warnings to be threaded through (#5343).
  - Text.Pandoc.MIME: add WebP (#5267, Mauro Bieg).
  - Tests: avoid calling findPandoc multiple times.
  - Old tests: remove need for temp files by using pipeProcess.
  - Added simple ipynb reader/writer tests (#5274).
  - Rearrange --help output in a more rational way, with common options at the beginning and options grouped by function (#5336).
  - trypandoc: Add JATS and other missing formats (Arfon Smith, #5291).
  - Add missing copyright notices and remove license boilerplate (#4592, Albert Krewinkel).
  - Use latest basement/foundation on 32bit windows.
  - Use latest skylighting (#5328). Custom syntax definitions no longer try to load language.dtd.
  - Require texmath 0.11.2.1
  - Use latest pandoc-citeproc (0.16.1.1).
  - MANUAL.txt:
    - Clarify variable substitution indentation in templates (#5338, Agustín Martín Barbero).
    - Reorder custom-styles section (#5324, Mauro Bieg).
  pandoc 2.6 (2019-01-30)
  - Support ipynb (Jupyter notebook) as input and output format.
    - Add ipynb as input and output format (extension .ipynb).
    - Added Text.Pandoc.Readers.Ipynb [API change].
    - Added Text.Pandoc.Writers.Ipynb [API change].
    - Add PandocIpynbDecodingError constructor to Text.Pandoc.Error.Error [API change].
    - Depend on ipynb library.
    - Note: there is no template for ipynb.
  - Add DokuWiki reader (#1792, Alexander Krotov). This adds Text.Pandoc.Readers.DokuWiki [API change], and adds dokuwiki as an input format.
  - Implement task lists (#3051, Mauro Bieg). Added task_lists extension. Task lists are supported from markdown and gfm input. They should work, to some degree, in all output formats, though in most formats you'll get a bullet list with a unicode character for the box. In HTML, you get checkboxes and in LaTeX/PDF output, a box is used as the list marker. API changes:
    - Added constructor Ext_task_lists to Extension.
    - Added taskListItemFromAscii and taskListItemToAscii to Text.Pandoc.Shared.
  - Allow some command line options to take URL in addition to FILE. --include-in-header, --include-before-body, --include-after-body.
  - HTML reader:
    - Handle empty start attribute (see #5162).
    - Treat textarea as a verbatim environment (#5241) and preserve spacing.
  - RST reader:
    - Change treatment of number-lines directive (Brian Leung, #5207). Directives of this type without numeric inputs should not have a startFrom attribute; with a blank value, the writers can produce extra whitespace.
    - Removed superfluous sourceCode class on code blocks (#5047).
    - Handle sourcecode directive as synonym for code (#5204).
  - Markdown reader:
    - Remove sourceCode class for literate Haskell code blocks (#5047). Reverse order of literate and haskell classes on code blocks when parsing literate Haskell, so haskell is first.
    - Treat <textarea> as a verbatim environment (#5241).
  - Org reader:
    - Handle minlevel option differently (#5190, Brian Leung). When minlevel exceeds the original minimum level observed in the file to be included, every heading should be shifted rightward.
    - Allow for case of :minlevel == 0 (#5190).
    - Fix treatment of links to images (#5191, Albert Krewinkel). Links with descriptions which are pointing to images are no longer parsed as inline images, but as links.
    - Add support for #+SELECT_TAGS (Brian Leung).
    - Separate filtering logic from conversion function (Brian Leung).
  - TWiki reader: Fix performance issue with underscores (#3921).
  - MediaWiki reader: use _ instead of - in auto-identifiers (#4731). We may not still be exactly matching mediawiki's algorithm.
  - LaTeX reader:
    - Remove sourceCode class for literate Haskell code blocks (#5047). Reverse order of literate and haskell classes on code blocks when parsing literate Haskell, so haskell is first.
    - Support \DeclareMathOperator (#5149).
    - Support \inputminted (#5103).
    - Support \endinput (#5233).
    - Allow includes with dots like cc_by_4.0. Previously the .0 was interpreted as a file extension, leading pandoc not to add .tex (and thus not to find the file). The new behavior matches tex more closely.
  - Man reader:
    - Use mapLeft from Shared instead of defining own.
  - Docx reader (Jesse Rosenthal):
    - Handle level overrides (#5134).
  - Docx writer:
    - Support custom properties (#3024, #5252, Agustín Martín Barbero). Also supports additional core properties: subject, lang, category, description.
    - Make Level into a real type, instead of an alias for a tuple (Jesse Rosenthal).
  - ICML writer (Mauro Bieg):
    - Support custom-styles (#5137, see #2106).
    - Support unnumbered headers (#5140).
  - Texinfo writer: Use header identifier for anchor if present (#4731). Previously we were overwriting an existing identifier with a new one.
  - Org writer: Preserve line-numbering for example and code blocks (Brian Leung).
  - Man/Ms writers: Don't escape - as \-. The \- gets rendered in HTML and PDF as a unicode minus sign.
  - Ms writer: Ensure we have a newline after .EN in display math (#5251).
  - RST writer: Don't wrap simple table header lines (#5128).
  - Asciidoc writer: Shorter delimiters for tables, blockquotes (#4364). This matches asciidoctor reference docs.
  - Dokuwiki writer: Remove automatic : prefix before internal image links (#5183, Damien Clochard). This prevented users from making relative image links.
  - Zimwiki writer: remove automatic colon prefix before internal images (#5183, Damien Clochard).
  - MediaWiki writer: fix caption, use 'thumb' instead of 'frame' (#5105). Captions used to have the word 'caption' prepended; this has been removed. Also, 'thumb' is used instead of 'frame' to allow images to be resized.
  - reveal.js writer:
    - Ensure that we don't get > 2 levels of section nesting, even with slide level > 2 (#5168).
    - If slide level == N but there is no N-level header, make sure the next header with level > N gets treated as a slide and put in a section, rather than remaining loose (#5168).
  - Markdown writer:
    - Make plain RawBlocks pass through in plain output.
    - Include needed whitespace after HTML figure (#5121). We use HTML for a figure in markdown dialects that can't represent it natively.
  - Commonmark writer:
    - Fix handling of SoftBreak with hard_line_breaks (#5195).
    - Implement --toc (writerTableOfContents) in commonmark/gfm writers (#5172).
  - EPUB writer:
    - Ensure that picture transforms are done on metadata too.
    - Small fixes to nav.xhtml: Add 'landmarks' id attribute to the landmarks nav. Replace old default CSS removing numbers from ol.toc li with new rules that match nav#toc ol, nav#landmarks ol. We keep the toc class on ol for backwards compatibility.
  - LaTeX writer:
    - Make raw content marked beamer pass through in beamer output (pandoc/lua-filters#40).
    - Beamer: avoid duplicated fragile property in some cases (#5208).
    - Add # special characters for listings (#4939). This character needs special handling in \lstinline.
  - RTF writer: use toTableOfContents from Shared to replace old duplicated code.
  - Pptx writer:
    - Support custom properties. Also supports additional core properties: subject, category, description (#5252, Agustín Martín Barbero).
    - Use toTableOfContents from Shared to replace old duplicated code.
  - ODT writer (Augustín Martín Barbero):
    - Fix typo in custom properties (#2839).
    - Improve standard properties, including the following core properties: generator (Pandoc/VERSION), description, subject, keywords, initial-creator (from authors), creation-date (actual creation date) (#5252).
  - Custom writers:
    - Allow '-' in filenames for custom lua writers (#5187).
    - sample.lua: add SingleQuoted, DoubleQuoted (#5104).
    - sample.lua: Add a missing > (MichaWiedenmann).
  - reveal.js template: Add zoomKey config (#4249).
  - HTML5 template: Remove unnecessary type="text/css" on style and link for HTML5 (#5146).
  - LaTeX template (Andrew Dunning, except where noted):
    - Prevent fontspec from scaling mainfont to match the default font, Latin Modern. A main font set to 12pt could previously appear between 11pt to 13pt depending on its design. To return to the earlier rendering, use -V mainfontoptions="Scale=MatchLowercase" (#5212, #5218).
    - Display monospaced fonts without TeX ligatures when using --pdf-engine=lualatex. It now matches the behaviour of other engines (#5212, #5218).
    - Remove the deprecated romanfont variable. The functionality of mainfont is identical (#5218).
    - Render \subtitle with the standard document classes. Previously, subtitle only appeared when using the KOMA-Script classes or Beamer (#5213, #5244).
    - Use Babel instead of Polyglossia for LuaLaTeX. This avoids several language selection problems, notably with retaining French spacing conventions when switching to a verbatim environment or another language; and in printing Greek text without hyphenation (#5193).
    - Use the xurl package if available, improving the appearance of URLs by allowing them to break at additional points (#5193).
    - Use bookmark if available to correct heading levels in PDF bookmarks: see the KOMA-Script 3.26 release notes (#5193).
    - Require the xcolor package to avoid a possible error when using additional packages alongside footnotes in tables (#5193, closes #4861).
    - Remove obsolete fixltx2e package, which has no functionality with TeX Live 2015 or later (#5193).
    - Allow multiple fontfamilies.options (#5193, closes #5194).
    - Restrict institute variable to Beamer (#5219).
    - Use footnotehyper package if available to make footnotes in tables compatible with hyperref (#5234).
    - Number parts and chapters in book classes only if the numbersections variable is set, for consistency with other output formats. To return to the previous behaviour, use -V numbersections -V secnumdepth=0 (#5235).
    - Reindent file (#5193).
    - Use built-in parskip handling with KOMA-Script classes (#5143, Enno).
    - Set default listings language for lua, assembler (#5227, John MacFarlane). Otherwise we get an error when trying to compile code with lua or assembler code. To change the default dialect (currently 5.3 for lua and x86masm for assembler), you can use --include-in-header to inject something like \lstset{defaultdialect=[5.2]Lua}.
  - Text.Pandoc.Readers: Changed types of readJSON; it now runs in an instance of PandocMonad, like the other readers and writers. [API change]
  - Text.Pandoc.Writers: Changed types of writeJSON; it now runs in an instance of PandocMonad, like the other readers and writers. [API change]
  - Text.Pandoc.Error: Added PandocUTF8DecodingError constructor for PandocError. [API change]
  - Text.Pandoc.Writers.Shared - add toTableOfContents. [API change] This is refactored out from the Markdown writer. It can be used in other writers to create a table of contents.
  - Improve error messages for UTF-8 decoding errors. Now we give the filename and byte offset (#4765).
  - Text.Pandoc.XML: Strip out illegal XML characters in escapeXMLString (#5119).
  - Text.Pandoc.Process: update pipeProcess (Albert Krewinkel). The implementation of pipeProcess was rewritten to fix sporadic failures caused by prematurely closed pipes.
  - Use safeRead instead of read everywhere in the code (John MacFarlane, Mauro Bieg, #5162, #5180).
  - Text.Pandoc.SelfContained: Decompress .svgz when converting to data: URI (#5163, Alexander Krotov).
  - Text.Pandoc.Parsing: Remove unused HasHeaderMap (#5175, Alexander Krotov). [API change]
  - Normalize Windows paths to account for change in ghc 8.6 (#5127). When pandoc is compiled with ghc 8.6, Windows paths are treated differently, and paths beginning \\server no longer work. This commit rewrites such patsh to \\?\UNC\server which works. The change operates at the level of argument parsing, so it only affects the command line program.
  - Simplify/fix reading of --metadata values on command line to avoid problems relating to hvr/HsYAML#7 (#5177).
  - data/pandoc.lua: auto-fix nested constructor arguments (Albert Krewinkel). Incorrect types to pandoc element constructors are automatically converted to the correct types when possible. This was already done for most constructors, but conversions are now also done for nested types (like lists of lists).
  - Removed custom Setup.hs, use build-type: simple. The only thing we gained from the custom build was automatic installation of the man page when using 'cabal install'. But custom builds cause problems, e.g., with cross-compilation. Installation of the man page is better handled by packagers. Note to packagers (e.g. Debian): it may be necessary to add a step installing the man page with the next release.
  - Allow latest http-client, tasty, zip-archive, Glob.
  - Require skylighting >= 0.7.5, adding support for sml, J, typescript.
  - Tests: Cleaned up findPandoc in Tests.Helpers, so it works well with cabal v2.
  - INSTALL.md:
    - Use button for installer links (John MacFarlane, Mauro Bieg, #5167).
    - Fix links and bump required stack version (max).
    - Improve installation notes on associated software (Andrew Dunning). Includes explanation of how to install related tools with package managers (since the method of installing rsvg-convert is not obvious).
  - doc/org.md: improve documentation of org features (Albert Krewinkel).
  - doc/lua-filters.md: use 3rd level headers for module fields.
  - MANUAL:
    - Clarify automatic identifiers (#5201). We remove non-alphanumerics. This includes, e.g., emojis.
    - Fix example for Div with id (Geoffrey Ely).
    - Update list of LaTeX packages used.
    - Make it clear that hard_line_breaks works in gfm (see #5195).
    - Mention raw_attribute in documentation for raw_html and raw_tex (#5240, thanks to @eiro).
    - Clarify that $sep$ must come right before $endfor$ in templates (#5243, Lev Givon).
    - Document metadata support for docx, odt, pptx writers (Agustín Martín Barbero).
    - Reorganize template variables (#5249, Andrew Dunning). Add additional headings to categorize variables, and alphabetize when there is large number; add more examples.
    - Document date-meta template variable (#5260, Tristan Stenner).
  - trypandoc: Fix CSS and viewport.
  pandoc 2.5 (2018-11-27)
  - Text.Pandoc.App: split into several unexported submodules (Albert Krewinkel): Text.Pandoc.App.FormatHeuristics, Text.Pandoc.App.Opt, Text.Pandoc.App.CommandLineOptions, Text.Pandoc.App.OutputSettings. This is motivated partly by the desire to reduce recompilations when something is modified, since App previously depended on virtually every other module.
  - Text.Pandoc.Extensions
    - Semantically, gfm_auto_identifiers is now a modifier of auto_identifiers; for identifiers to be set, auto_identifiers must be turned on, and then the type of identifier produced depends on gfm_auto_identifiers and ascii_identifiers are set. Accordingly, auto_identifiers is now added to githubMarkdownExtensions (#5057).
    - Remove ascii_identifiers from githubMarkdownExtensions. GitHub doesn't seem to strip non-ascii characters any more.
  - Text.Pandoc.Lua.Module.Utils (Albert Krewinkel)
    - Test AST object equality via Haskell (#5092). Equality of Lua objects representing pandoc AST elements is tested by unmarshalling the objects and comparing the result in Haskell. A new function equals which performs this test has been added to the pandoc.utils module.
    - Improve stringify. Meta value strings (MetaString) and booleans (MetaBool) are now converted to the literal string and the lowercase boolean name, respectively. Previously, all values of these types were converted to the empty string.
  - Text.Pandoc.Parsing: Remove Functor and Applicative constraints where Monad already exists (Alexander Krotov).
  - Text.Pandoc.Pretty: Don't render BreakingSpace at end of line or beginning of line (#5050).
  - Text.Pandoc.Readers.Markdown
    - Fix parsing of citations, quotes, and underline emphasis after symbols. Starting with pandoc 2.4, citations, quoted inlines, and underline emphasis were no longer recognized after certain symbols, like parentheses (#5099, #5053).
    - In pandoc 2.4, a soft break after an abbreviation would be relocated before it to allow for insertion of a nonbreaking space after the abbreviation. This behavior is here reverted. A soft break after an abbreviation will remain, and no nonbreaking space will be added. Those who care about this issue should take care not to end lines with an abbreviation, or to insert nonbreaking spaces manually.
  - Text.Pandoc.Readers.FB2: Do not throw error for unknown elements in <body> (Alexander Krotov). Some libraries include custom elements in their FB2 files.
  - Text.Pandoc.Readers.HTML
    - Allow tfoot before body rows (#5079).
    - Parse <small> as a Span with class "small" (#5080).
    - Allow thead containing a row with td rather than th (#5014).
  - Text.Pandoc.Readers.LaTeX
    - Cleaned up handling of dimension arguments. Allow decimal points, preceding space.
    - Don't allow arguments for verbatim, etc.
    - Allow space before bracketed options.
    - Allow optional arguments after \\ in tables.
    - Improve parsing of \tiny, \scriptsize, etc. Parse as raw, but know that these font changing commands take no arguments.
  - Text.Pandoc.Readers.Muse
    - Trim whitespace before parsing grid table cells (Alexander Krotov).
    - Add grid tables support (Alexander Krotov).
  - Text.Pandoc.Shared
    - For bibliography match Div with id refs, not class references. This was a mismatch between pandoc's docx, epub, latex, and markdown writers and the behavior of pandoc-citeproc, which actually looks for a div with id refs rather than one with class references.
    - Exactly match GitHub's identifier generating algorithm (#5057).
    - Add parameter for Extensions to uniqueIdent and inlineListToIdentifier (#5057). [API change] This allows these functions to be sensitive to the settings of Ext_gfm_auto_identifiers and Ext_ascii_identifiers, and allows us to use uniqueIdent in the CommonMark reader, replacing custom code. It also means that gfm_auto_identifiers can now be used in all formats.
  - Text.Pandoc.Writers.AsciiDoc
    - Use .+ as list markers to support nested ordered lists (#5087).
    - Support list number styles (#5089).
    - Render Spans using [#id .class]#contents# (#5080).
  - Text.Pandoc.Writers.CommonMark
    - Respect --ascii (#5043, quasicomputational).
    - Make sure --ascii affects quotes, super/subscript.
  - Text.Pandoc.Writers.Docx
    - Fix bookmarks to headers with long titles (#5091). Word has a 40 character limit for bookmark names. In addition, bookmarks must begin with a letter. Since pandoc's auto-generated identifiers may not respect these constraints, some internal links did not work. With this change, pandoc uses a bookmark name based on the SHA1 hash of the identifier when the identifier isn't a legal bookmark name.
    - Add bookmarks to code blocks (Nikolay Yakimov).
    - Add bookmarks to images (Nikolay Yakimov).
    - Refactor common bookmark creation code into a function (Nikolay Yakimov).
  - Text.Pandoc.Writers.EPUB: Handle calibre metadata (#5098). Nodes of the form
```
  <meta name="calibre:series" content="Classics on War and Politics"/>
```
    are now included from an epub XML metadata file. You can also include this information in your YAML metadata, like so:
```
  calibre:
   series: Classics on War and Policitics
```
    In addition, ibooks-specific metadata can now be included via an XML file. (Previously, it could only be included via YAML metadata, see #2693.)
  - Text.Pandoc.Writers.HTML: Use plain " instead of " outside of attributes.
  - Text.Pandoc.Writers.ICML: Consolidate adjacent strings, inc. spaces. This avoids splitting up the output unnecessarily into separate elements.
  - Text.Pandoc.Writers.LaTeX: Don't emit [<+->] unless beamer output, even if writerIncremental is True (#5072).
  - Text.Pandoc.Writers.Muse (Alexander Krotov).
    - Output tables as grid tables if they have multi-line cells.
    - Indent simple tables only on the top level.
    - Output tables with one column as grid tables.
    - Add support for --reference-location.
    - Internal improvements.
  - Text.Pandoc.Writers.OpenDocument: Fix list indentation (Nils Carlson, #5095). This was a regression in pandoc 2.4.
  - Text.Pandoc.Writers.RTF: Fix warnings for skipped raw inlines.
  - Text.Pandoc.Writers.Texinfo: Add blank line before @menu section (#5055).
  - Text.Pandoc.XML: in toHtml5Entities, prefer shorter entities when there are several choices for a particular character.
  - data/abbreviations
    - Add additional abbreviations (Andrew Dunning) Many of these borrowed from the Chicago Manual of Style 10.42, 'Scholarly abbreviations'.
  - Templates
    - Asciidoc template: add :lang: to title header is lang is set in metadata (#5088).
  - pandoc.cabal: Add cabal flag derive_json_via_th (Albert Krewinkel) Disabling the flag will cause derivation of ToJSON and FromJSON instances via GHC Generics instead of Template Haskell. The flag is enabled by default, as deriving via Generics can be slow (see #4083).
  - trypandoc:
    - Tweaked drop-down lists.
    - Put link to site in footer.
    - Preselect output format.
    - Update on change of in or out format.
    - Add man input format.
  - MANUAL.txt:
    - Fix outdated description of latex_macros extension.
    - Clarified placement of bibliography.
    - Added "A note on security."
    - Fix note on curly brace syntx for locators.
    - Document new explicit syntax for citeproc locators.
    - Remove confusing cross-links for some extensions.
    - Don't put pandoc in code ticks in heading.
    - Document that --ascii works for gfm and commonmark too.
    - Add man to --from options.
  - doc/customizing-pandoc.md: various improvements (Mauro Bieg).
  pandoc 2.4 (2018-11-03)
  
  New features
  - New input format man (Yan Pashkovsky, John MacFarlane).
  Behavior changes
  - --ascii is now implemented in the writers, not in Text.Pandoc.App, via the new writerPreferAscii field in WriterOptions. Now the write* functions for Docbook, HTML, ICML, JATS, LaTeX, Ms, Markdown, and OPML are sensitive to writerPreferAscii. Previously the to-ascii translation was done in Text.Pandoc.App, and thus not available to those using the writer functions directly.
  - --ascii now works with Markdown output. HTML5 character reference entities are used.
  - --ascii now works with LaTeX output. 100% ASCII output can't be guaranteed, but the writer will use commands like \"{a} and \l whenever possible, to avoid emitting a non-ASCII character.
  - For HTML5 output, --ascii now uses HTML5 character reference entities rather than numerical entities.
  - Improved detection of format based on extension (in Text.Pandoc.App). We now ensure that if someone tries to convert a file for a format that has a pandoc writer but not a reader, it won't just default to markdown.
  - Add viz. to abbreviations file (#5007, Nick Fleisher).
  - AsciiDoc writer: always use single-line section headers, instead of the old underline style (#5038). Previously the single-line style would be used if --atx-headers was specified, but now it is always used.
  - RST writer: Use simple tables when possible (#4750).
  - CommonMark (and gfm) writer: Add plain text fallbacks. (#4528, quasicomputational). Previously, the writer would unconditionally emit HTML output for subscripts, superscripts, strikeouts (if the strikeout extension is disabled) and small caps, even with raw_html disabled. Now there are plain-text (and, where possible, fancy Unicode) fallbacks for all of these corresponding (mostly) to the Markdown fallbacks, and the HTML output is only used when raw_html is enabled.
  - Powerpoint writer: support raw openxml (Jesse Rosenthal, #4976). This allows raw openxml blocks and inlines to be used in the pptx writer. Caveats: (1) It's up to the user to write well-formed openxml. The chances for corruption, especially with such a brittle format as pptx, is high. (2) Because of the tricky way that blocks map onto shapes, if you are using a raw block, it should be the only block on a slide (otherwise other text might end up overlapping it). (3) The pptx ooxml namespace abbreviations are different from the docx ooxml namespaces. Again, it's up to the user to get it right. Unzipped document and ooxml specification should be consulted.
  - With --katex in HTML formats, do not use the autorenderer (#4946). We no longer surround formulas with $..$ or \[..\]. Instead, we tell katex to convert the contents of span elements with class "math". Since math has already been identified, this avoids wasted time parsing for LaTeX delimiters. Note, however, that this may yield unexpected results if you have span elements with class "math" that don't contain LaTeX math. Also, use latest version of KaTeX by default (0.9.0).
  - The man writer now produces ASCII-only output, using groff escapes, for portability.
  - ODT writer:
    - Add title, author and date to metadata; any remaining metadata fields are added as meta:user-defined tags.
    - Implement table caption numbering (#4949, Nils Carlson). Captioned tables are numbered and labeled with format "Table 1: caption", where "Table" is replaced by a translation, depending on the value of lang in metadata. Uncaptioned tables are not enumerated.
    - OpenDocument writer: Implement figure numbering in captions (#4944, Nils Carlson). Figure captions are now numbered 1, 2, 3, ... The format in the caption is "Figure 1: caption" and so on (where "Figure" is replaced by a translation, depending on the value of lang in the metadata). Captioned figures are numbered consecutively and uncaptioned figures are not enumerated. This is necessary in order for LibreOffice to generate an Illustration Index (Table of Figures) for included figures.
  - RST reader: Pass through fields in unknown directives as div attributes (#4715). Support class and name attributes for all directives.
  - Org reader: Add partial support for #+EXCLUDE_TAGS option. (#4284, Brian Leung). Headers with the corresponding tags should not appear in the output.
  - Log warnings about missing title attributes now include a suggestion about how to fix the problem (#4909).
  - Lua filter changes (Albert Krewinkel):
    - Report traceback when an error occurs. A proper Lua traceback is added if either loading of a file or execution of a filter function fails. This should be of help to authors of Lua filters who need to debug their code.
    - Allow access to pandoc state (#5015). Lua filters and custom writers now have read-only access to most fields of pandoc's internal state via the global variable PANDOC_STATE.
    - Push ListAttributes via constructor (Albert Krewinkel). This ensures that ListAttributes, as present in OrderedList elements, have additional accessors (viz. start, style, and delimiter).
    - Rename ReaderOptions fields, use snake_case. Snake case is used in most variable names, using camelCase for these fields was an oversight. A metatable is added to ensure that the old field names remain functional.
    - Iterate over AST element fields when using pairs. This makes it possible to iterate over all ield names of an AST element by using a generic for loop with pairs`:
      
      for field_name, field_content in pairs(element) do ... end
      
      Raw table fields of AST elements should be considered an implementation detail and might change in the future. Accessing element properties should always happen through the fields listed in the Lua filter docs.
      
      Note that the iterator currently excludes the t/tag field.
    - Ensure that MetaList elements behave like Lists. Methods usable on Lists can also be used on MetaList objects.
    - Fix MetaList constructor (Albert Krewinkel). Passing a MetaList object to the constructor pandoc.MetaList now returns the passed list as a MetaList. This is consistent with the constructor behavior when passed an (untagged) list.
  - Custom writers: Custom writers have access to the global variable PANDOC_DOCUMENT(Albert Krewinkel, #4957). The variable contains a userdata wrapper around the full pandoc AST and exposes two fields, meta and blocks. The field content is only marshaled on-demand, performance of scripts not accessing the fields remains unaffected.
  API changes
  - Text.Pandoc.Options: add writerPreferAscii to WriterOptions.
  - Text.Pandoc.Shared:
    - Export splitSentences. This was previously duplicated in the Man and Ms writers.
    - Add ToString typeclass (Alexander Krotov).
  - New exported module Text.Pandoc.Filter (Albert Krewinkel).
  - Text.Pandoc.Parsing
    - Generalize gridTableWith to any Char Stream (Alexander Krotov).
    - Generalize readWithM from [Char] to any Char Stream that is a ToString instance (Alexander Krotov).
  - New exposed module Text.Pandoc.Filter (Albert Krewinkel).
  - Text.Pandoc.XML: add toHtml5Entities.
  - New exported module Text.Pandoc.Readers.Man (Yan Pashkovsky, John MacFarlane).
  - Text.Pandoc.Writers.Shared
    - Add exported functions toSuperscript and toSubscript (quasicomputational, #4528).
    - Remove exported functions metaValueToInlines, metaValueToString. Add new exported functions lookupMetaBool, lookupMetaBlocks, lookupMetaInlines, lookupMetaString. Use these whenever possible for uniformity in writers (Mauro Bieg, #4907). (Note that removed function metaValueToInlines was in previous released versions.)
    - Add metaValueToString.
  - Text.Pandoc.Lua
    - Expose more useful internals (Albert Krewinkel):
      
      runFilterFile to run a Lua filter from file;
      
      data type Global and its constructors; and
      
      setGlobals to add globals to a Lua environment.
      
      This module also contains Pushable and Peekable instances required to get pandoc's data types to and from Lua. Low-level Lua operation remain hidden in Text.Pandoc.Lua.
    - Rename runPandocLua to runLua (Albert Krewinkel).
    - Remove runLuaFilter, merging this into Text.Pandoc.Filter.Lua's apply (Albert Krewinkel).
  Bug fixes and under-the-hood improvements
  - Text.Pandoc.Parsing
    - Make uri accept any stream with Char tokens (Alexander Krotov).
    - Rewrite uri without withRaw (Alexander Krotov).
    - Generalize parseFromString and parseFromString' to any streams with Char token (Alexander Krotov)
    - Rewrite nonspaceChar using noneOf (Alexander Krotov)
  - Text.Pandoc.Shared: Reimplement mapLeft using Bifunctor.first (Alexander Krotov).
  - Text.Pandoc.Pretty: Simplify Text.Pandoc.Pretty.offset (Alexander Krotov).
  - Text.Pandoc.App
    - Work around HXT limitation for --syntax-definition with windows drive (#4836).
    - Always preserve tabs for man format. We need it for tables.
    - Split command line parsing code into a separate unexported module, Text.Pandoc.App.CommandLineOptions (Albert Krewinkel).
  - Text.Pandoc.Readers.Roff: new unexported module for tokenizing roff documents.
  - New unexported module Text.Pandoc.RoffChar, provided character escape tables for roff formats.
  - Text.Pandoc.Readers.HTML: Fix htmlTag and isInlineTag to accept processing instructions (#3123, regression since 2.0).
  - Text.Pandoc.Readers.JATS: Use foldl' instead of maximum to account for empty lists (Alexander Krotov).
  - Text.Pandoc.Readers.RST: Don't allow single-dash separator in headerless table (#4382).
  - Text.Pandoc.Readers.Org: Parse empty argument array in inline src blocks (Brian Leung).
  - Text.Pandoc.Readers.Vimwiki:
    - Get rid of F, runF and stateMeta' in favor of stateMeta (Alexander Krotov).
    - Parse Text without converting to [Char] (Alexander Krotov).
  - Text.Pandoc.Readers.Creole: Parse Text without converting to [Char] (Alexander Krotov).
  - Text.Pandoc.Readers.LaTeX
    - Allow space at end of math after \ (#5010).
    - Add support for nolinkurl command (#4992, Brian Leung).
    - Simplified type on doMacros'.
    - Tokenize before pulling tokens, rather than after (#4408). This has some performance penalty but is more reliable.
    - Make macroDef polymorphic and allow in inline context. Otherwise we can't parse something like \lowercase{\def\x{Foo}}. I have actually seen tex like this in the wild.
    - Improved parsing of \def, \let. We now correctly parse:
      \def\bar{hello} \let\fooi\bar \def\fooii{\bar} \fooi +\fooii \def\bar{goodbye} \fooi +\fooii
    - Improve parsing of \def argspec.
    - Skip \PackageError commands (see #4408).
    - Fix bugs omitting raw tex (#4527). The default is -raw_tex, so no raw tex should result unless we explicitly say +raw_tex. Previously some raw commands did make it through.
    - Moved isArgTok to Text.Pandoc.Readers.LaTeX.Parsing.
    - Moved babelLangToBCP, polyglossiaLangToBCP to new module, Text.Pandoc.Readers.LaTeX.Lang (unexported).
    - Simplified accent code using unicode-transforms. New dependency on unicode-transforms package for normalization.
    - Allow verbatim blocks ending with blank lines (#4624).
    - Support breq math environments: dmath, dgroup, darray. This collects some of the general-purpose code from the LaTeX reader, with the aim of making the module smaller.
  - Text.Pandoc.Readers.Markdown
    - Fix awkward soft break movements before abbreviations (#4635).
    - Add updateStrPos in a couple places where needed.
  - Text.Pandoc.Readers.Docx: Trigger bold/italic with bCs, iCs (#4947). These are variants for "complex scripts" like Arabic and are now treated just like b, i (bold, italic).
  - Text.Pandoc.Readers.Muse (Alexander Krotov)
    - Try to parse lists before trying to parse table. This ensures that tables inside lists are parsed correctly.
    - Forbid whitespace after opening and before closing markup elements.
    - Parse page breaks.
    - Simplify museToPandocTable to get rid of partial functions.
    - Allow footnotes to start with empty line.
    - Make sure that the whole text is parsed.
    - Allow empty headers. Previously empty headers caused parser to terminate without parsing the rest of the document.
    - Allow examples to be indented with tabs.
    - Remove indentation from examples indicated by {{{ and }}}.
    - Fix parsing of empty cells.
    - Various changes to internals.
    - Rewrite some parsers in applicative style.
    - Avoid tagsoup dependency.
    - Allow table caption to contain +.
  - Text.Pandoc.Writers.LaTeX
    - Add newline if math ends in a comment (#4880). This prevents the closing delimiter from being swalled up in the comment.
    - With --listings, don't pass through org-babel attributes (#4889).
    - With --biblatex, use \autocite when possible (#4960). \autocites{a1}{a2}{a3} will not collapse the entries. So, if we don't have prefixes and suffixes, we use instead \autocite{a1,a2,a3}.
    - Fix description lists contining highlighted code (#4662).
  - Text.Pandoc.Writers.Man
    - Don't wrap .SH and .SS lines (#5019).
    - Avoid unnecessary .RS/.RE pair in definition lists with one paragraph definitions.
    - Moved common groff functions to Text.Pandoc.Writers.Groff.
    - Fix strong/code combination on man (should be \f[CB] not \f[BC], see #4973).
    - Man writer: use \f[R] instead of \f[] to reset font (Alexander Krotov, #4973).
    - Move splitSentences to Text.Pandoc.Shared.
  - Text.Pandoc.Writers.Docx
    - Add framework for custom properties (#3034). So far, we don't actually write any custom properties, but we have the infrastructure to add this.
    - Handle tables in table cells (#4953). Although this is not documented in the spec, some versions of Word require a w:p element inside every table cell. Thus, we add one when the contents of a cell do not already include one (e.g. when a table cell contains a table).
  - Text.Pandoc.Writers.AsciiDoc: Prevent illegal nestings. Adjust header levels so that n+1 level headers are only found under n level headers, and the top level is 1.
  - Text.Pandoc.Writers.OpenDocument: Improve bullet/numbering alignment (#4385). This change eliminates the large gap we used to have between bullet and text, and also ensures that numbers in numbered lists will be right-aligned.
  - Text.Pandoc.Writers.ZimWiki
    - Number ordered list items sequentially, rather than always with 1 (#4962).
    - Remove extra indentation on lists (#4963).
  - Text.Pandoc.Writers.EPUB: Use metadata field css instead of stylesheet (Mauro Bieg, #4990).
  - Text.Pandoc.Writers.Markdown: Ensure blank between raw block and normal content (#4629). Otherwise a raw block can prevent a paragraph from being recognized as such.
  - Text.Pandoc.Writers.Ms
    - Removed old escapeBar. We don't need this now that we use @ for math delim.
    - Moved common code to Text.Pandoc.Writers.Roff and to Text.Pandoc.RoffChar.
    - Move splitSentences to Text.Pandoc.Shared (to avoid duplication with the man writer).
  - Text.Pandoc.Writers.Muse (Alexander Krotov).
```
+ Add support for grid tables.
+ Fix Muse writer style.
+ Use `length` instead of `realLength` to calculate definition
  indentation. Muse parsers don't take character width into
  account when calculating indentation.
+ Do not insert newline before lists.
+ Use lightweight markup after `</em>` tag.
```
  - New unexported module Text.Pandoc.Writers.Roff, providing functions useful for all roff format writers (man, ms).
  - Text.Pandoc.Lua
    - Move globals handling to separate module Text.Pandoc.Lua.Global (Albert Krewinkel).
    - Lua filter internals: push Shared.Element as userdata (Albert Krewinkel). Hierarchical Elements were pushed to Lua as plain tables. This is simple, but has the disadvantage that marshaling is eager: all child elements will be marshaled as part of the object. Using a Lua userdata object instead allows lazy access to fields, causing content marshaling just (but also each time) when a field is accessed. Filters which do not traverse the full element contents tree become faster as a result.
  Default template changes
  - LaTeX template:
    - Add variable hyperrefoptions (#4925, Mathias Walter).
    - Add variable romanfont, romanfontoptions (#4665, OvidiusCicero).
  - AsciiDoc template: use single-line style for title.
  - revealjs template: Fix typo in the socket.io javascript plugin (#5006, Yoan Blanc).
  - Text.Pandoc.Lua.Util: add missing docstring to defineHowTo (Albert Krewinkel).
  - data/pandoc.lua: add datatype ListAttributes (Albert Krewinkel)
  - data/sample.lua: replace custom pipe function with pandoc.utils.pipe (Albert Krewinkel).
  Documentation improvements
  - INSTALL.md
    - Add chromeos install instructions (#4958) (Evan Pratten).
    - Add note about TinyTeX.
  - MANUAL.txt
    - Change groff -> roff.
    - Implement --ascii for Markdown writer.
    - Clarify LaTeX image dimensions output (Mauro Bieg).
  - doc/customizing-pandoc.md: added skeleton (Mauro Bieg, #3288).
  - doc/getting-started.md: Added title to test1.md to avoid warning.
  - doc/lua-filters.md: merge type references into main document, fix description of Code.text (Albert Krewinkel).
  Build infrastructure improvements
  - Makefile
    - Makefile: added quick-cabal, full-cabal targets.
    - Make .msi download targets insensitive to order of appveyor builds.
  - Update benchmarks for ghc 8.6.1.
  - pandoc.cabal:
```
+ Enable more compiler warnings (Albert Krewinkel).
+ Make base lower bound 4.8.
+ Bump upper bound for QuickCheck.
+ Bump upper bound for binary.
+ Updated version bounds for containers and haddock-library (#4974).
+ Added docx/docPropos/custom.xml to cabal data-files.
+ Require skylighting 0.7.4 (#4920).
+ New dependency on unicode-transforms package for normalization.
```
  - Improved .travis.yml testing and test with GHC 8.6.1 (Albert Krewinkel).
  - Added tools/changelog-helper.sh.
  - Added test/grofftest.sh for testing the man reader on real man pages.
  pandoc 2.3.1 (2018-09-28)
  - RST reader:
    - Parse RST inlines containing newlines (#4912, Francesco Occhipinti). This eliminates a regression introduced after pandoc 2.1.1, which caused inline constructions containing newlines not to be recognized.
    - Fix bug with internal link targets (#4919). They were gobbling up indented content underneath.
  - Markdown reader: distinguish autolinks in the AST. With this change, autolinks are parsed as Links with the uri class. (The same is true for bare links, if the autolink_bare_uris extension is enabled.) Email autolinks are parsed as Links with the email class. This allows the distinction to be represented in the AST.
  - Org reader:
    - Force inline code blocks to honor export options (Brian Leung).
    - Parse empty argument array in inline src blocks (Brian Leung).
  - Muse reader (Alexander Krotov):
    - Added additional tests.
    - Do not allow code markup to be followed by digit.
    - Remove heading level limit.
    - Simplify <literal> tag parsers
    - Parse Text instead of String. Benchmark shows 7% improvement.
    - Get rid of HTML parser dependency.
    - Various code improvements.
  - ConTeXt writer: change \ to / in Windows image paths (#4918). We do this in the LaTeX writer, and it avoids problems. Note that / works as a LaTeX path separator on Windows.
  - LaTeX writer:
    - Add support for multiprenote and multipostnote arguments with --biblatex (Brian Leung, #4930). The multiprenotes occur before the first prefix of a multicite, and the multipostnotes follow the last suffix.
    - Fix a use of last that might take empty list. If you ran with --biblatex and have an empty document (metadata but no blocks), pandoc would previously raise an error because of the use of last on an empty list.
  - RTF writer: Fix build failure with ghc-8.6.1 caused by missing MonadFail instance (Jonas Scholl).
  - ODT Writer: Improve table header row style handling (Nils Carlson). This changes the way styles for cells in the header row and normal rows are handled in ODT tables. Previously a new (but identical) style was generated for every table, specifying the style of the cells within the table. After this change there are two style definitions for table cells, one for the cells in the header row, one for all other cells. This doesn't change the actual styles, but makes post-processing changes to the table styles much simpler as it is no longer necessary to introduce new styles for header rows and there are now only two styles where there was previously one per table.
  - HTML writer:
    - Don't add uri class to presumed autolinks. Formerly the uri class was added to autolinks by the HTML writer, but it had to guess what was an autolink and could not distinguish [http://example.com](http://example.com) from <http://example.com>. It also incorrectly recognized [pandoc](pandoc) as an autolink. Now the HTML writer simply passes through the uri attribute if it is present, but does not add anything.
    - Avoid adding extra section nestings for revealjs. Previously revealjs title slides at level (slidelevel - 1) were nested under an extra section element, even when the section contained no additional (vertical) content. That caused problems for some transition effects.
    - Omit unknown attributes in EPUB2 output. For example, epub:type attributes should not be passed through, or the epub produced will not validate.
  - JATS writer: remove 'role' attribute on 'bold' and 'sc' elements (#4937). The JATS spec does not allow these.
  - Textile writer: don't represent uri class explicitly for autolinks (#4913).
  - Lua filters (Albert Krewinkel):
    - Cleanup filter execution code.
    - Better error on test failure.
  - HTML, Muse reader tests: reduce time taken by round-trip test.
  - Added cabal.project.
  - MANUAL: epub:type is only useful for epub3 (Maura Bieg).
  - Use hslua v1.0.0 (Albert Krewinkel).
  - Fix translations/ru to use modern Russian orthography (Ivan Trubach).
  - Build Windows binary using ghc 8.6.1 and cabal new-build. This fixes issues with segfaults in the 32-bit Windows binaries (#4283).
  pandoc 2.3 (2018-09-16)
  - Add --metadata-file option (Mauro Bieg, #1960), which allows users to specify metadata in a YAML file, regardless of the input format (#1960).
  - Text.Pandoc.Writers.Shared: export isDisplayMath (API change).
  - Text.Pandoc.Readers.Markdown: export yamlToMeta (API change, Mauro Bieg).
  - Text.Pandoc.Readers.LaTeX.Types:
    - New type ArgSpec (API change).
    - Second parameter of Macro constructor is now [ArgSpec] instead of Int (API change).
  - Markdown reader:
    - Use tex instead of latex for raw tex-ish content. We can't always tell if it's LaTeX, ConTeXt, or plain TeX. Better just to use tex always. Note that if context or latex specifically is desired, you can still force that in a markdown document by using the raw attribute. Note that this change may affect some filters, if they assume that raw tex parsed by the Markdown reader will be RawBlock (Format latex). In most cases it should be trivial to modify the filters to accept tex as well.
    - Refactor and reorganize YAML code (Mauro Bieg).
    - Make example_lists work for interrupted lists without startnum (#4908).
  - HTML reader:
    - Parse <script type="math/tex tags as math (#4877). These are used by MathJax in some configurations.
    - Extract spaces inside links instead of trimming them (Alexander Krotov, #4845).
    - Added round-trip tests (Alexander Krotov).
    - Make parsing sensitive to the raw_tex extension (#1126). This now allows raw LaTeX environments, \ref, and \eqref to be parsed (which is helpful for translation HTML documents using MathJaX).
  - Org reader (Albert Krewinkel):
    - Respect export option p for planning info. Inclusion of planning info (*DEADLINE*, *SCHEDULED*, and *CLOSED*) can be controlled via the p export option: setting the option to t will add all planning information in a Plain block below the respective headline.
    - Org reader internals: don't rely on RecordWildCards and ViewPatterns ghc extensions.
    - Strip planning info from output. Planning info is parsed, but not included in the output (as is the default with Emacs Org-mode, #4867).
  - LaTeX reader:
    - Handle parameter patterns for \def (#4768, #4771). For example: \def\foo#1[#2]{#1 and #2}.
    - Allow % characters in URLs. This affects \href and \url (#4832).
    - Fixed parsing of \texorpdfstring. We were returning the wrong argument as the content.
    - Support blockcquote, foreignblockquote, foreigncblockquote, hyphenblockquote, hyphencblockquote, enquote*, foreignquote, hyphenquote from csquotes (#4848). Note that foreignquote will be parsed as a regular Quoted inline (not using the quotes appropriate to the foreign language).
    - Support more text-mode accents (#4652). Add support for \|, \b, \G, \h, \d, \f, \r, \t, \U, \i, \j, \newtie, \textcircled. Also fall back to combining characters when composed characters are not available.
    - Resolve \ref for figure numbers.
    - Support mintinline (#4365, Marc Schreiber).
    - Fix siunitx unit commands so they are only recognized in siunitx contexts (#4842). For example, \l outside of an siunitx context should be l-slash, not l (for liter).
    - Fix double unnumbered class (#4838). The unnumbered class was being included twice for starred sections.
  - RST reader: Don't skip link definitions after comments (#4860).
  - Muse reader (Alexander Krotov):
    - Close the </quote> in indented tag test. There is already a separate test for unclosed </quote>.
    - Autonumber sections in the correct order. Parsing now stops at each section header to ensure the header is registered before parsing of the next section starts.
    - Move duplicate code into headingStart function.
    - Allow newline after opening * or **.
    - Don't allow digits after closing marker in lightweight markup This change makes reader more compatible with Emacs Muse.
    - Parse <verse> tag in one pass instead of using parseFromString. This change makes it possible to have verbatim </verse> tag inside verse.
  - ODT reader: deal gracefully with missing <office:font-face-decls/> (#4336). This allows pandoc to parse ODT document produced by KDE's Calligra.
  - Muse writer (Alexander Krotov):
    - Output headers without asterisks if not on the top level.
    - Never wrap definition list terms.
    - Set envInsideBlock = True when rendering notes.
    - Use "" instead of [] for empty String.
    - Check for whitespace in the beginning and end of Str's.
    - Escape -, ; and > in the beginning of strings.
    - Escape list markers in the beginning of notes.
    - Normalize inline list before testing if tags should be used.
    - Use tags instead of lightweight markup for empty strings.
    - Use lightweight markup when possible.
    - Escape empty strings. This guarantees that conditionalEscapeString never returns empty string.
    - Wrap conditionalEscapeString result into Muse type. This removes the need to pass envInsideLinkDescription to it.
    - Separate shouldEscapeString function.
    - Simplify inline list rendering.
    - Replace newlines in strings with spaces.
  - Docx writer:
    - Add MetaString case for abstract, subtitle (#4900, Mauro Bieg).
    - Properly handle display math in spans (#4826). This isn't a complete solution, since other nestings of display math may still cause problems, but it should work for what is by far the most common case.
  - HTML writer:
    - Always output <dt> element, even if it is empty (#4883, Alexander Krotov).
    - Don't prefix epub: attributes with data-.
  - Org writer: Don't escape literal _, ^ (#4882). Org doesn't recognize these escapes.
  - ODT writer: Fix percentage image scaling (#4881, Nils Carlson). Image scaling was broken when a width was set to a percentage.
  - EPUB writer: set epub:type on body element in each chapter, depending on the epub:type of the first section (#4823). This only affects epub3. See http://www.idpf.org/epub/profiles/edu/structure/#h.l0bzsloklt10
  - FB2 writer: put coverpage element between title and date rather than in document-info element (#4854).
  - Markdown writer: Escape ~ if strikeout extension enabled (#4840).
  - Haddock writer: Use proper format for latex math in haddock (#4571, Joe Hermaszewski). Inline math in $..$, display math in \[..\], tex is now used. Previously we'd "fake it with unicode" and fall back to tex when that didn't work. But newer haddock versions support latex math.
  - TEI writer:
    - Ensure that title element is always present, even if empty (#4839).
    - Put author tags in the template, rather than adding them in the writer (#4839).
  - LaTeX writer/template: be sensitive to filecolor variable (#4822). linkcolor only affects internal links, and urlcolor only affects linked URLs. For external links, the option to use is filecolor.
  - ConTeXt writer: output raw tex blocks as well as context (#969).
  - RST writer:
    - Use .. raw:: latex for tex content.
    - Use .. container for generic Divs, instead of raw HTML.
    - Render Divs with admonition classes as admonitions (#4833). Also omit Div with class admonition-title. These are generated by the RST reader and should be omitted on round-trip.
  - Text.Pandoc.PDF: fix message printed when rsvg-convert is not available (#4855, Antonio Terceiro).
  - HTML5 template: add the title-block-header identifier to the header element, to make it easier to style precisely (#4767, J. B. Rainsberger).
  - OpenDocument template: Remove unnecessary indenting of TOC title (#4798, José de Mattos Neto).
  - latex template: Add support for $toc-title$ to LaTeX (and PDF) (#4853, Wandmalfarbe).
  - TEI template: improve publicationStmt. Add support for publisher, address, pubPlace, and date variables.
  - beamer template: Support "toc-title" (#4835, Cyril Roelandt).
  - Text.Pandoc.Extensions: Fix haddock on Ext_footnotes (Chris Martin).
  - Lua: cleanup Lua utils, remove unused functions (Albert Krewinkel).
  - MANUAL.txt:
    - Clarify that --biblatex/--natbib don't work directly for PDF (#4904).
    - Document epub:type attribute (Mauro Bieg, #4901)
    - Clarify when --resource-path has an effect.
    - More detail on customization in syntax highlighting section.
    - Document encoding issue with --listings (#4871, Damien Clochard).
    - Remove docs on removed --katex-stylesheet (Mauro Bieg, #4862).
    - Use https for context wiki links (#4910).
  - CONTRIBUTING.md:
    - Link to lua-filters repository (#4874).
    - Fix mistake in REPL instructions for stack. (#4849, Brian Leung).
  - lua-filters.md: add links to filters, and to lua-filters repository (#4874).
  - INSTALL.md:
    - Indicate that cabal >= 2.0 is needed.
    - Added chocolatey installation method (#4844, Miodrag Milić).
  - Travis: exclude round-trip tests, except for nightly test which can fail.
  - Use latest texmath, pandoc-citeproc.
  - Use a patched version of foundation until https://github.com/haskell-foundation/foundation/pull/503 is fixed.
  - Clean up appveyor build and Windows package creation. We now use 64-bit stack and ghc 8.4.3, lts-12 for the 64-bit build. The WiX-based msi is now 64-bit for 64-bit builds (fixing #4795).
  - Remove obsolete RELEASE-CHECKLIST.md.
  - Added additional compiler warnings in Makefile and CI builds.
  pandoc 2.2.3.2 (2018-08-07)
  - Markdown reader: Properly handle boolean values in YAML metadata (#4819). This fixes a regression in 2.2.3, which cause boolean values to be parsed as MetaInlines instead of MetaBool.
    
    We here record another undocumented (but desirable) change in 2.2.3: numerical metadata fields are now parsed as MetaInlines rather than MetaString.
  pandoc 2.2.3.1 (2018-08-06)
  - Markdown reader: Fix parsing of embedded mappings in YAML metadata (#4817). This fixes a regression in 2.2.3 which caused embedded mappings (e.g. mappings in sequences) not to work in YAML metadata.
  pandoc 2.2.3 (2018-08-05)
  - RST reader: improve parsing of inline interpreted text roles (#4811).
    - Use a Span with class "title-reference" for the default title-reference role.
    - Use B.text to split up contents into Spaces, SoftBreaks, and Strs for title-reference.
    - Use Code with class "interpreted-text" instead of Span and Str for unknown roles. (The RST writer has also been modified to round-trip this properly.)
    - Disallow blank lines in interpreted text.
    - Backslash-escape now works in interpreted text.
    - Backticks followed by alphanumerics no longer end interpreted text.
    - Remove support for nested inlines (Francesco Occhipinti). RST does not allow nested emphasis, links, or other inline constructs. This fixes several bugs (#4581, #4561, #4792).
  - Org reader: fix parsers relying on parseFromString (#4784, Albert Krewinkel). Emphasis was not parsed when it followed directly after some block types (e.g., lists).
  - Markdown reader: Allow unquoted numbers and booleans as YAML mapping keys. Previously in 2.2.2 you could not do
```
---
0: bar
...
```
    but only
```
---
'0': bar
...
```
    With this change, both forms work.
  - DocBook reader: metadata handling improvements. Now we properly parse title and subtitle elements that are direct children of book and article (as well as children of bookinfo, articleinfo, or info). We also now use the subtitle metadata field for subtitles, rather than tacking the subtitle on to the title.
  - RST writer:
    - Allow images to be directly nested within links (#4810, Francesco Occhipinti).
    - Use titleblock instead of title variable for title block (#4803, Francesco Occhipinti). titleblock contains a properly formatted title and subtitle (using top-level headers). title and subtitle variables are still available and just contain the title and subtitle text. Note that this change will require an update to custom rst templates.
    - Render Code with class "interpreted-text" as interpreted text role.
  - MediaWiki writer: Avoid extra blank line in tables with empty cells (#4794). Note that the old output is semantically identical, but the new output looks better.
  - Lua Utils module: add function blocks_to_inlines (#4799, Albert Krewinkel). Exposes a function converting which flattenes a list of blocks into a list of inlines. An example use case would be the conversion of Note elements into other inlines.
  - RST template: use titleblock instead of title. Users of custom RST templates will want to update this.
  - LaTeX template: Moved some beamer code in default.latex template. This change allows beamer themes to change the template and font (as Metropolis does) (#4450).
  - Better error message on -t pdf -o out.pdf (#1155, Mauro Bieg).
  - Added test case for #4669 to repository.
  - INSTALL.md: Fix broken link for cabal-install (#4806, ChanHoHo).
  - MANUAL.txt:
    - Add beamer info for slide backgrounds (#4802, John Muccigrosso).
    - Clarify when csquotes is used in LaTeX writer (#4514).
    - Add commonmark to list of output formats where raw_tex has an effect (see #4527).
  pandoc 2.2.2.1 (2018-07-19)
  - Fix regression finding templates in user data directory (#4777). Under version 2.2.1 and prior pandoc found latex templates in the templates directory under the data directory, but this broke in 2.2.2.
  - Fix for bug in parsing \input in rawLaTeXBlock and rawLaTeXInline (#4781). (This primarily affects the markdown reader, and other readers that accept raw tex.) Starting in 2.2.2, everything after an \input (or \include) in a markdown file would be parsed as raw LaTeX.
  - MANUAL:
    - Clarify gfm vs markdown_github (#4783, Mauro Bieg).
    - Use keywords instead of tags in YAML metadata example (#4779). Unlike tags, keywords is used in some of the writers and default templates.
  - Add missing rollingLinks option to revealjs template (#4778, Igor Khorlo).
  pandoc 2.2.2 (2018-07-16)
  - Use HsYAML instead of yaml for translations and YAML metadata (#4747). yaml wraps a C library; HsYAML is pure Haskell. Advances #4535.
    
    Note: HsYAML implements YAML 1.2, in which the valid true values are true, True, TRUE. This means a change in the semantics of YAML metadata that could affect users: y, yes, and on no longer count as true values.
  - Fix regression: make --pdf-engine work with full paths (#4681, Mauro Bieg).
  - CommonMark reader: Handle ascii_identifiers extension (#4742, Anders Waldenborg). Non-ascii characters were not stripped from identifiers even if the ascii_identifiers extension was enabled (which is is by default for gfm).
  - TikiWiki reader: Improve list parsing (#4722, Mauro Bieg). Remove trailing Space from list items. Parse lists that have no space after marker.
  - LaTeX reader:
    - Treat lilypond as a verbatim environment (#4725).
    - Parse figure label into Image id (#4700, Mauro Bieg).
    - Beamer: Allow "noframenumbering" option (#4696, Raymond Ehlers).
    - Allow spaces around \graphicspath arguments (#4698).
    - Handle includes without surrounding blanklines (#4553). In addition, \input can now be used in an inline context, e.g. to provide part of a paragraph, as it can in LaTeX.
    - In rawLaTeXBlock, handle macros that resolve to a \begin or \end (#4667).
    - In rawLaTeXBlock, don't expand macros in macro definitions (#4653). Note that this only affected LaTeX in markdown.
    - Tighten up reading of beamer overlay specifications (#4669). Ideally we'd turn these on only when reading beamer, but currently beamer is not distinguished from latex as an input format. This commit also activates parsing of overlay specifications after commands in general (e.g. \item), since they can occur in many contexts in beamer.
    - Parse more siunitx unit commands (#4296, #4773).
    - Be more forgiving in key/value option parsing (#4761).
  - Markdown reader:
    - Allow empty code spans, e.g. ` `.
    - Emojis are now wrapped in Spans with class emoji and attribute data-emoji (Anders Waldenborg, #4743). This allows the writer to handle them in a special way (e.g. using a special font, or just rendering the emoji name).
  - Muse reader (Alexander Krotov, except where indicated):
    - Get rid of non-exhaustive pattern match warning (Mauro Bieg).
    - Add support for floating images.
    - Add support for images with specified width.
    - Parse image URLs without "guard" and "takeExtension".
    - Split link and image parsing into separate functions.
    - Parse links starting with "URL:" explicitly instead of trying to strip "URL:" prefix after parsing.
  - Texinfo writer: Use @sup and @sub instead of custom macros (#4728, Alexander Krotov).
  - Markdown writer: Preserve implicit_figures with attributes, even if implicit_attributes is not set, by rendering in raw HTML (#4677).
  - Markdown and commonmark/github writers now respect the emoji extension. So, -f markdown+emoji -t markdown+emoji now leaves :smile: as :smile: rather than converting it to a smile character.
  - Docx writer: Be sensitive to toc in YAML metadata (#4645).
  - ODT/OpenDocument writer: Make internal links work (#4358). This adds proper bookmarks to the headers with non-null IDs.
  - EPUB writer: Properly escape pagetitle. Previously we weren't escaping & and other XML characters in the pagetitle, so a title containing a & would be invalid.
  - AsciiDoc Writer: Eescape square brackets at start of line (#4545, Mauro Bieg).
  - RST writer:
    - Don't treat 'example' as a syntax name (#4748). This fixes conversions from org with example blocks.
    - Support --number-sections via the section-numbering directive in standalone output.
  - reveal.js writer and template: reuse mathjax URL provided by the argument to --mathjax or the normal pandoc default, rather than a hard-coded one in the template (#4701).
  - LaTeX writer:
    - Properly handle footnotes in table captions (#4683). Refactored code from figure captions to use in both places.
    - In beamer output, fix single digit column percentage (#4690, Mauro Bieg).
  - FB2 writer (Alexander Krotov):
    - Convert Plain to Para in annotation (#2424).
    - Fix order of items in title-info (#2424).
  - Custom writer: fix error message on script failure (Albert Krewinkel). Error messages produced by Lua were not displayed by Pandoc.
  - Text.Pandoc.Emoji now exports emojiToInline, which returns a Span inline containing the emoji character and some attributes with metadata (class emoji, attribute data-emoji with emoji name). (API change, Anders Waldenborg, #4743).
  - Text.Pandoc.PDF:
    - Revert fix for #4484 (only compress images on last run, #4755). This will mean some increase in the time it takes to produce an image-heavy PDF with xelatex, but it will make tables of contents correct, which is more important.
    - Fix logic error in runTeXProgram. We were running the tex program one more time than requested. This should speed up PDF production.
  - Allow --template to take a URL as argument.
  - Text.Pandoc.Highlighting: Add missing re-export of breezeDark highlighting style (#4687, Adrian Sieber, API change).
  - Clarify macOS install in INSTALL.md (#4661). Make the binary package installer the recommended method, and note that on some older versions of macOS, homebrew installs from source and takes a lot of disk space (#4664, Ian).
  - MANUAL:
    - Clarify EPUB linked media (#4756, Mauro Bieg)
    - Update manual for "true" YAML values. Now that we're using HsYAML and YAML 1.2, the valid true values are true, True, TRUE. NOTE! y, yes, on no longer count as true values.
    - Document -F as alias for --filter (thanks to Gandalf Saxe).
    - Update manual on how math is rendered in LaTeX.
    - Add proxy description (#4131, Mauro Bieg).
    - Clarify that --toc requires --standalone (#4703).
    - Update citation styles link (#4699, wiefling).
  - In API docs, clarify how Ext_east_asian_line_breaks extension works (kaizshang91). Note that it will not take effect when readers/writers are called as libraries (#4674).
  - Improved translations/fr (#4766, lux-lth).
  - Removed inadvertently added .orig files from repository (#4648).
  - Remove network-uri flag and use 'Network.Socket'. This removes a compiler warning. There is no need for the old network-uri flag, since network 2.6 was released in 2014.
  - Add stack.lts10.yaml, stack.lts11.yaml. use lts-12 in stack.yaml.
  - Bump upper bounds for dependent packages.
  - Exclude foundation 0.0.21 for ghc 7.10. Otherwise cabal gets confused because of the way ghc 7.10 is excluded in foundation's cabal file. This can be removed when haskell-foundation/foundation#500 is fixed.
  - Require cabal-version >= 2.0. This is needed for haddock-library.
  pandoc 2.2.1 (2018-05-10)
  - Restored and undeprecated gladtex for HTML math (#4607).
    - Added GladTeX constructor to Text.Pandoc.Options.HTMLMathMethod [API change, reverts removal in v2.2]
    - Restored and undeprecated --gladtex option, removed in v2.2.
  - LaTeX reader: Handle $ in /text{..} inside math (#4576).
  - Org reader: Fix image filename recognition (Albert Krewinkel). Use a function from the filepath library to check whether a string is a valid file name. The custom validity checker that was used before gave wrong results (e.g. for absolute file paths on Windows, kawabata/ox-pandoc#52).
  - FB2 reader: Replace some errors with warnings (Alexander Krotov).
  - HTML writer:
    - Strip links from headers when creating TOC (#4340). Otherwise the TOC entries will not link to the sections.
    - Fix regression with tex math environments in HTML + MathJax (#4639).
  - Muse writer (Alexander Krotov): Add support for left-align and right-align classes (#4542).
  - Docx writer: Support underline (#4633).
  - Text.Pandoc.Parsing: Lookahead for non-whitespace after singleQuoteStart and doubleQuoteStart (#4637).
  - test-pandoc-utils.lua: more robust testing on both windows and *nix. Previously the pipe tests were only run if \bin/false and /bin/sed were present, which they aren't in default MacOS and Windows systems. Fixed by using tr and false, which should always be in the path on a *nix system, and find and echo for Windows.
  - Text.Pandoc.Shared: add uriPathToPath. This adjusts the path from a file: URI in a way that is sensitive to Windows/Linux differences. Thus, on Windows, /c:/foo gets interpreted as c:/foo, but on Linux, /c:/foo gets interpreted as /c:/foo. See #4613.
  - Use uriPathToPath with file: URIs (#4613).
  - Revert piping HTML to pdf-engine (Mauro Bieg, #4413). Use a temp file as before.
  - Text.Pandoc.Class: Catch IO errors when writing media files and issue a warning, rather than an error (Francesco Occhipinti, #4559).
  - Don't lowercase custom writer filename (Alexander Krotov, #4610).
  - MANUAL (Mauro Bieg):
    - Clarify truthiness in template variables (#2281).
    - Clarify pipe table width calculation (#4520).
  - ConTeXt template: New Greek fallback typeface (Pablo Rodríguez, #4405). CMU Serif gives better typographic results than the previous Greek fallback DejaVu Serif.
  - Make HTML template polyglot (#4606, OvidiusCicero), by making <link rel="stylesheet" href="$css$"> self-closing.
  - Use texmath 0.11, allowing better translation of non-ASCII characters in math (#4642).
  pandoc 2.2 (2018-04-27)
  - New input format: fb2 (FictionBook2) (Alexander Krotov).
  - Make --ascii work for all XML formats (ICML, OPML, JATS,...), and for ms and man.
  - Remove deprecated --latexmathml, --gladtex, --mimetex, --jsmath, -m, --asciimathml options.
  - New module Text.Pandoc.Readers.FB2, exporting readFB2 (Alexander Krotov, API change).
  - Markdown reader:
    - Allow empty key-value attributes, like title="" (#2944).
    - Handle table w/o following blank line in fenced div (#4560).
    - Remove "fallback" for doubleQuote parser. Previously the parser tried to be efficient -- if no end double quote was found, it would just return the contents. But this could backfire in a case **this should "be bold**, since the fallback would return the content "be bold** and the closing boldface delimiter would never be encountered.
    - Improve computation of the relative width of the last column in a multiline table, so we can round-trip tables without constantly shrinking the last column.
  - EPUB reader:
    - Fix images with space in file path (#4344).
  - LaTeX reader:
    - Properly resolve section numbers with \ref and chapters (#4529).
    - Parse sloppypar environment (#4517, Marc Schreiber).
    - Improve handling of raw LaTeX (for markdown etc.) (#4589, #4594). Previously there were some bugs in how macros were handled.
    - Support \MakeUppercase, \MakeLowercase, \uppercase, \lowercase, and also \MakeTextUppercase and \MakeTextLowercase from textcase (#4959).
  - Textile reader:
    - Fixed tables with no body rows (#4513). Previously these raised an exception.
  - Mediawiki reader:
    - Improve table parsing (#4508). This fixes detection of table attributes and also handles ! characters in cells.
  - DocBook reader:
    - Properly handle title in section element (#4526). Previously we just got section_title for section (though sect1, sect2, etc. were handled properly).
    - Read tex math as output by asciidoctor (#4569, Joe Hermaszewski).
  - Docx reader:
    - Combine adjacent CodeBlocks with the same attributes into a single CodeBlock. This prevents a multiline codeblock in Word from being read as different paragraphs.
  - RST reader:
    - Allow < 3 spaces indent under directives (#4579).
    - Fix anonymous redirects with backticks (#4598).
  - Muse reader (Alexander Krotov):
    - Add support for Text::Amuse multiline headings.
    - Add <math> tag support.
    - Add support for <biblio> and <play> tags.
    - Allow links to have empty descriptions.
    - Require block <literal> tags to be on separate lines.
    - Allow - in anchors.
    - Allow verse to be indented.
    - Allow nested footnotes.
    - Internal improvements.
  - Muse writer (Alexander Krotov):
    - Escape > only at the beginning of a line.
    - Escape ] in image title.
    - Escape ] brackets in URLs as %5D.
    - Only escape brackets when necessary.
    - Escape ordered list markers.
    - Do not escape list markers unless preceded by space.
    - Escape strings starting with space.
    - Escape semicolons and markers after line break.
    - Escape ; to avoid accidental comments.
    - Don't break headers, line blocks and tables with line breaks.
    - Correctly output empty headings.
    - Escape horizontal rule only if at the beginning of the line.
    - Escape definition list terms starting with list markers.
    - Place header IDs before header.
    - Improve span writing.
    - Do not join Spans in normalization.
    - Don't align ordered list items.
    - Remove key-value pairs from attributes before normalization.
    - Enable --wrap=preserve for all tests by default.
    - Reduced <verbatim> tags in output.
    - Internal changes.
  - RST writer:
    - Use more consistent indentation (#4563). Previously we used an odd mix of 3- and 4-space indentation. Now we use 3-space indentation, except for ordered lists, where indentation must depend on the width of the list marker.
    - Flatten nested inlines (#4368, Francesco Occhipinti). Nested inlines are not valid RST syntax, so we flatten them following some readability criteria discussed in #4368.
  - EPUB writer:
    - Ensure that pagetitle is always set, even when structured titles are used. This prevents spurious warnings about empty title elements (#4486).
  - FB2 writer (Alexander Krotov):
    - Output links inline instead of producing notes. Previously all links were turned into footnotes with unclickable URLs inside.
    - Allow emphasis and notes in titles.
    - Don't intersperse paragraph with empty lines.
    - Convert metadata value abstract to book annotation.
    - Use <empty-line /> for HorizontalRule rather than LineBreak. FB2 does not have a way to represent line breaks inside paragraphs; previously we used <empty-line /> elements, but these are not allowed inside paragraphs.
  - Powerpoint writer (Jesse Rosenthal):
    - Handle Quoted Inlines (#4532).
    - Simplify code with ParseXml.
    - Allow fallback options when looking for placeholder type.
    - Check reference-doc for all layouts.
    - Simplify speaker notes logic.
    - Change notes state to a simpler per-slide value.
    - Remove Maybe from SpeakerNotes in Slide. mempty means no speaker notes.
    - Add tests for improved speaker notes.
    - Handle speaker notes earlier in the conversion process.
    - Keep notes with related blocks (#4477). Some blocks automatically split slides (imgs, tables, column divs). We assume that any speaker notes immediately following these are connected to these elements, and keep them with the related blocks, splitting after them.
    - Remove docProps/thumbnail.jpeg in data dir (Jesse Rosenthal, #4588). It contained a nonfree ICC color calibration profile and is not needed for production of a powerpoint document.
  - Markdown writer:
    - Include a blank line at the end of the row in a single-row multiline table, to prevent it from being interpreted as a simple table (#4578).
  - CommonMark writer:
    - Correctly ignore LaTeX raw blocks when raw_tex is not enabled (#4527, quasicomputational).
  - EPUB writer:
    - Add epub:type="footnotes" to notes section in EPUB3 (#4489).
  - LaTeX writer:
    - In beamer, don't use format specifier for default ordered lists (#4556). This gives better results for styles that put ordered list markers in boxes or circles.
    - Update \lstinline delimiters (#4369, Tim Parenti).
  - Ms writer:
    - Use \f[R] rather than \f[] to reset font (#4552).
    - Use \f[BI] and \f[CB] in headers, instead of \f[I] and \f[C], since the header font is automatically bold (#4552).
    - Use \f[CB] rather than \f[BC] for monospace bold (#4552).
    - Create pdf anchor for a Div with an identifier (#4515).
    - Escape / character in anchor ids (#4515).
    - Improve escaping for anchor ids: we now use uNNN instead of uNNN to avoid ambiguity.
  - Man writer:
    - Don't escape U+2019 as ' (#4550).
  - Text.Pandoc.Options:
    - Removed JsMath, LaTeXMathML, and GladTeX constructors from Text.Pandoc.Options.HTMLMathMethod [API change].
  - Text.Pandoc.Class:
    - writeMedia: unescape URI-escaping in file path. This avoids writing things like file%20one.png to the file system.
  - Text.Pandoc.Parsing:
    - Fix romanNumeral parser (#4480). We previously accepted 'DDC' as 1100.
    - uri: don't treat * characters at end as part of URI (#4561).
  - Text.Pandoc.MIME:
    - Use the alias application/eps for EPS (#2067). This will ensure that we retain the eps extension after reading the image into a mediabag and writing it again.
  - Text.Pandoc.PDF:
    - Use withTempDir in html2pdf.
    - With xelatex, don't compress images til the last run (#4484). This saves time for image-heavy documents.
    - Don't try to convert EPS files (#2067). pdflatex converts them itself, and JuicyPixels can't do it.
    - For pdflatex, use a temp directory in the working directory. Otherwise we can have problems with the EPS conversion pdflatex tries to do, which can't operate on a file above the working directory without --shell-escape.
  - Changes to tests to accommodate changes in pandoc-types. In https://github.com/jgm/pandoc-types/pull/36 we changed the table builder to pad cells. This commit changes tests (and two readers) to accord with this behavior.
  - Set default extensions for beamer same as latex.
  - LaTeX template:
    - Add beameroption variable (#4359, Étienne Bersac).
    - Use pgfpages package; this is needed for notes on second screen in beamer (Étienne Bersac).
    - Add background-image variable (#4601, John Muccigrosso).
  - reveal.js template: Add background-image variable (#4600, John Muccigrosso).
  - ms template: Fix date. Previously .ND was used, but this only works if you have a title page, which we don't. Thanks to @teoric.
  - Removed pragmas for unused extensions (#4506, Anabra).
  - Fix bash completion for --print-default-data-file (#4549). Previously this looked in the filesystem, even if pandoc was compiled with embed_data_files (and sometimes it looked in a nonexistent build directory). Now the bash completion script just includes a hard-coded list of data file names.
  - MANUAL:
    - Clarify template vs metadata variables (#4501, Mauro Bieg).
    - Fix raw content example (#4479, Mauro Bieg).
    - Specify that you use html for raw output in epub.
    - Add examples for raw docx blocks (#4472, Tristan Stenner). The documentation states that the target format name should match the output format, which isn't the case for docx/openxml and some others.
    - Don't say that empty_paragraphs affects markdown output (#4540).
    - Consolidate input/output format documentation (#4577, Mauro Bieg).
  - New README template. Take in/out formats from manual.
  - Fix example in lua-filters docs (#4459, HeirOfNorton).
  - Use the -threaded GHC flag when building benchmarks (#4587, Francesco Occhipinti).
  - Bump temporary upper bound to 1.4.
  - Use pandoc-citeproc 0.14.3.1.
  - Use texmath-0.10.1.2 (fixes escapes in math in ms, #4597).
  - Removed old lib directory. This was used for something long ago, but plays no role now.
  - Removed unneeded data file LaTeXMathML.js.
  - Create 64- and 32-bit versions of Windows binary packages.
  pandoc 2.1.3 (2018-03-18)
  - Docx reader (Jesse Rosenthal):
    - Add tests for nested smart tags.
    - Parse nested smart tags.
    - Make unwrapSDT into a general unwrap function that can unwrap both nested SDT tags and smartTags. This makes the SmartTags constructor in the Docx type unnecessary, so we remove it (#4446).
    - Remove unused docxWarnings (Alexander Krotov).
  - RST reader: Allow unicode bullet characters (#4454).
  - Haddock reader: Better table handling, using haddock-library's new table support, if compiled against a version that includes it. Note that tables with col/rowspans will not translate well into Pandoc.
  - Muse reader (Alexander Krotov):
    - Various internal improvements.
    - Require closing tag to have the same indentation as opening.
    - Do not reparse blocks inside unclosed block tag (#4425).
    - Parse <class> tag (supported by Emacs Muse).
    - Do not produce empty Str element for unindented verse lines.
  - LaTeX reader:
    - Add support to parse unit string of \SI command (closes #4296, Marc Schreiber).
  - Haddock writer: In the writer, we now render tables always as grid tables, since Haddock supports these.
  - DokuWiki writer: rewrite backSlashLineBreaks (#4445, Mauro Bieg).
  - Docx writer: Fixed formatting of DefaultStyle ordered lists in docx writer. We want decimal for the top level, not lower roman.
  - RST writer:
    - Strip whitespace at beginning and ending of inline containers (#4327, Francesco Occhipinti).
    - Filter out empty inline containers (#4434). There is nothing in RST that corresponds to e.g. Emph [], so we just ignore elements like this (Francesco Occhipinti).
  - Muse writer (Alexander Krotov):
    - Support spans with anchors.
    - Replace smallcaps with emphasis before normalization.
    - Output smallcaps as emphasis.
    - Expand Cite before list normalization.
    - Write empty inline lists as <verbatim></verbatim>.
    - Remove empty Str from the beginning of inline lists during normalization.
    - Escape "-" to avoid creating bullet lists.
    - Fix math expansion for more than one expression per paragraph.
    - Expand math before inline list normalization.
  - Dokuwiki writer: fix LineBreaks in Tables (#4313, Mauro Bieg).
  - Ms writer:
    - Asciify pdf anchors, since unicode anchors don't work (#4436). Internal links should be converted automatically, so this shouldn't affect users directly.
    - Don't escape hyphens as \-; that's for a minus sign (#4467).
  - Beamer writer: put hyperlink after \begin{frame} and not in the title (#4307). If it's in the title, then we get a titlebar on slides with the plain attribute, when the id is non-null. This fixes a regression in 2.0.
  - EPUB writer: Remove notes from TOC in nav.xhtml (#4453, Mauro Bieg).
  - JATS writer: Remove extraneous, significant whitespace (#4335, Nokome Bentley).
  - html2pdf: inject base tag with current working directory (#4413, Mauro Bieg). This helps ensure that linked resources are included.
  - Add Semigroup instances for everything for which we defined a Monoid instance previously (API change):
    - Text.Pandoc.Class.FileTree.
    - Text.Pandoc.Translations.Translations.
    - Text.Pandoc.Extensions.Extensions.
    - Text.Pandoc.Readers.Odt.StyleReader.Styles.
    - Text.Pandoc.Pretty.Doc.
    - Text.Pandoc.MediaBag.MediaBag.
  - Add custom Prelude to give clean code for Monoid and Semigroup that works with ghc 7.10-8.4. The custom Prelude (prelude/Prelude) is used for ghc versions < 8.4. NoImplicitPrelude is used in all source files, and Prelude is explicitly imported (this is necessary for ghci to work properly with the custom prelude).
  - Text.Pandoc.Writers.Shared (Francesco Occhipinti):
    - Export stripLeadingTrailingSpace.
    - Don't wrap lines in grid tables when --wrap=none (#4320).
    - gridTable: Don't wrap lines in tables when --wrap=none. Instead, expand cells, even if it results in cells that don't respect relative widths or surpass page column width. This change affects RST, Markdown, and Haddock writers.
  - Raise error if someone tries to print docx, odt, etc. template (#4441).
  - LaTeX template: Provide bidi package's option using \PassOptionsToPackage (#4357, Václav Haisman). This avoid a clash when polyglossia loads it first and then it is loaded again for XeLaTeX.
  - ConTeXt template: Added pdfa variable to generate PDF/A (#4294, Henri Menke). Instructions on how to install the ICC profiles on ConTeXt standalone can be found in the wiki: http://wiki.contextgarden.net/PDFX#ICC_profiles. If the ICC profiles are not available the log will contain error messages.
  - Use latest pandoc-types, skylighting
  - Use latest pandoc-citeproc in binary package.
  - Bump upper bound for time, criterion, haddock-library, exceptions, http-types, aeson, haddock-library.
  - Bump upper bound tasty-quickcheck 0.10 (#4429, Felix Yan).
  - pandoc.cabal: fix up other-extensions and language fields. Language is now consistently Haskell2010, and other-extensions is consistently NoImplicitPrelude. Everything else to be specified in the module header as needed.
  - Removed old-locale flag and Text.Pandoc.Compat.Time. This is no longer necessary since we no longer support ghc 7.8.
  - Make weigh-pandoc into a benchmark program. Remove weigh-pandoc flag. weigh-pandoc is now built (and run) automatically when you build (and run) benchmarks.
  - MANUAL: add instructions for background images reveal.js (#4325, John Muccigrosso).
  - appveyor: use VS 2013 environment instead of VS 2015 for Windows builds.
  pandoc 2.1.2 (2018-03-02)
  - Markdown reader:
    - Fix parsing bug with nested fenced divs (#4281). Previously we allowed "nonindent spaces" before the opening and closing :::, but this interfered with list parsing, so now we require the fences to be flush with the margin of the containing block.
  - Commonmark reader:
    - raw_html is now on by default. It can be disabled explicitly using -f commonmark-raw_html.
  - Org reader (Albert Krewinkel):
    - Move citation tests to separate module.
    - Allow changing emphasis syntax (#4378). The characters allowed before and after emphasis can be configured via #+pandoc-emphasis-pre and #+pandoc-emphasis-post, respectively. This allows to change which strings are recognized as emphasized text on a per-document or even per-paragraph basis. Example:
      
      #+pandoc-emphasis-pre: "-\t ('\"{" #+pandoc-emphasis-post: "-\t\n .,:!?;'\")}["
  - LaTeX reader:
    - Fixed comments inside citations (#4374).
    - Fix regression in package options including underscore (#4424).
    - Make --trace work.
    - Fixed parsing of tabular* environment (#4279).
  - RST reader:
    - Fix regression in parsing of headers with trailing space (#4280).
  - Muse reader (Alexander Krotov):
    - Enable <literal> tags even if amuse extension is enabled. Amusewiki disables tags for security reasons. If user wants similar behavior in pandoc, RawBlocks and RawInlines can be removed or replaced with filters.
    - Remove space prefix from <literal> tag contents.
    - Do not consume whitespace while looking for closing end tag.
    - Convert alphabetical list markers to decimal in round-trip test. Alphabetical lists are an addition of Text::Amuse. They are not present in Emacs Muse and can be ambiguous when list starts with "i.", "c." etc.
    - Allow <quote> and other tags to be indented.
    - Allow single colon in definition list term.
    - Fix parsing of verse in lists.
    - Improved parsing efficiency. Avoid parseFromString. Lists are parsed in linear instead of exponential time now.
    - Replace ParserState with MuseState.
    - Prioritize lists with roman numerals over alphabetical lists. This is to make sure "i." starts a roman numbered list, instead of a list with letter "i" (followed by "j", "k", ...").
    - Fix directive parsing.
    - Parse definition lists with multiple descriptions.
    - Parse next list item before parsing more item contents.
    - Fixed a bug: headers did not terminate lists.
    - Move indentation parsing from definitionListItem to definitionList.
    - Paragraph indentation does not indicate nested quote. Muse allows indentation to indicate quotation or alignment, but only on the top level, not within a or list.
    - Require that block tags are on separate lines. Text::Amuse already explicitly requires it anyway.
    - Fix matching of closing inline tags.
    - Various internal changes.
    - Fix parsing of nested definition lists.
    - Require only one space for nested definition list indentation.
    - Do not remove trailing whitespace from <code>.
    - Fix parsing of trailing whitespace. Newline after whitespace now results in softbreak instead of space.
  - Docx reader (Jesse Rosenthal, except where noted):
    - Handle nested sdt tags (#4415).
    - Don't look up dependant run styles if +styles is enabled.
    - Move pandoc inline styling inside custom-style span.
    - Read custom styles (#1843). This will read all paragraph and character classes as divs and spans, respectively. Dependent styles will still be resolved, but will be wrapped with appropriate style tags. It is controlled by the +styles extension (-f docx+styles). This can be used in conjunction with the custom-style feature in the docx writer for a pandoc-docx editing workflow. Users can convert from an input docx, reading the custom-styles, and then use that same input docx file as a reference-doc for producing an output docx file. Styles will be maintained across the conversion, even if pandoc doesn't understand them.
    - Small change to Fields hyperlink parser. Previously, unquoted string required a space at the end of the line (and consumed it). Now we either take a space (and don't consume it), or end of input.
    - Pick table width from the longest row or header (Francesco Occhipinti, #4360).
  - Muse writer (Alexander Krotov):
    - Change verse markup: > instead of <verse> tag.
    - Remove empty strings during inline normalization.
    - Don't indent nested definition lists.
    - Use unicode quotes for quoted text.
    - Write image width specified in percent in Text::Amuse mode.
    - Don't wrap displayMath into <verse>.
    - Escape nonbreaking space (~~).
    - Join code with different attributes during normalization.
    - Indent lists inside Div.
    - Support definitions with multiple descriptions.
  - Powerpoint writer (Jesse Rosenthal):
    - Use table styles This will use the default table style in the reference-doc file. As a result they will be easier when using in a template, and match the color scheme.
    - Remove empty slides. Because of the way that slides were split, these could be accidentally produced by comments after images. When animations are added, there will be a way to add an empty slide with either incremental lists or pauses.
    - Implement syntax highlighting. Note that background colors can't be implemented in PowerPoint, so highlighting styles that require these will be incomplete.
    - New test framework for pptx. We now compare the output of the Powerpoint writer with files that we know to (a) not be corrupt, and (b) to show the desired output behavior (details below).
    - Add notesMaster to presentation.xml if necessary.
    - Ignore links and (end)notes in speaker notes.
    - Output speaker notes.
    - Read speaker note templates conditionally. If there are speaker notes in the presentation, we read in the notesMasters templates from the reference pptx file.
    - Fix deletion track changes (#4303, Jesse Rosenthal).
  - Markdown writer: properly escape @ to avoid capture as citation (#4366).
  - LaTeX writer:
    - Put hypertarget inside figure environment (#4388). This works around a problem with the endfloat package and makes pandoc's output compatible with it.
    - Fix image height with percentage (#4389). This previously caused the image to be resized to a percentage of textwidth, rather than textheight.
  - ConTeXt writer (Henri Menke):
    - New section syntax and support --section-divs (#2609). \section[my-header]{My Header} -> \section[title={My Header},reference={my-header}]. The ConTeXt writer now supports the --section-divs option to write sections in the fenced style, with \startsection and \stopsection.
    - xtables: correct wrong usage of caption (Henri Menke).
  - Docx writer:
    - Fix image resizing with multiple images (#3930, Andrew Pritchard).
    - Use new golden framework (Jesse Rosenthal).
    - Make more deterministic to facilitate testing (Jesse Rosenthal).
      
      getUniqueId now calls to the state to get an incremented digit, instead of calling to P.uniqueHash.
      
      we always start the PRNG in mkNumbering/mkAbstractNum with the same seed (1848), so our randoms should be the same each time.
    - Fix ids in comment writing (Jesse Rosenthal). Comments from --track-changes=all were producing corrupt docx, because the writer was trying to get id from the (ID,_,_) field of the attributes, and ignoring the "id" entry in the key-value pairs. We now check both.
  - Ms writer: Added papersize variable.
  - TEI writer:
    - Use height instead of depth for images (#4331).
    - Ensure that id prefix is always used.
    - Don't emit role attribute; that was a leftover from the Docbook writer.
    - Use 'xml:id', not 'id' attribute (#4371).
  - AsciiDoc writer:
    - Do not output implicit heading IDs (#4363, Alexander Krotov). Convert to asciidoc-auto_identifiers for old behaviour.
  - RST writer:
    - Remove blockToRST' moving its logic into fixBlocks (Francesco Occhipinti).
    - Insert comment between lists and quotes (#4248, Francesco Occchipinti).
  - RST template: remove definition of 'math' role as raw. This used to be needed prior to v 0.8 of docutils, but now math support is built-in.
  - Slides: Use divs to set incremental/non-incremental (#4381, Jesse Rosenthal). The old method (list inside blockquote) still works, but we are encouraging the use of divs with class incremental or nonincremental.
  - Text.Pandoc.ImageSize:
    - Make image size detection for PDFs more robust (#4322).
    - Determine image size for PDFs (#4322).
    - EMF Image size support (#4375, Andrew Pritchard).
  - Text.Pandoc.Extensions:
    - Add Ext_styles (Jesse Rosenthal, API change). This will be used in the docx reader (defaulting to off) to read pargraph and character styles not understood by pandoc (as divs and spans, respectively).
    - Made Ext_raw_html default for commonmark format.
  - Text.Pandoc.Parsing:
    - Export manyUntil (Alexander Krotov, API change).
    - Export improved sepBy1 (Alexander Krotov).
    - Export list marker parsers: upperRoman, lowerRoman, decimal, lowerAlpha, upperAlpha (Alexander Krotov, API change).
  - Tests/Lua: fix tests on windows (Albert Krewinkel).
  - Lua: register script name in global variable (#4393). The name of the Lua script which is executed is made available in the global Lua variable PANDOC_SCRIPT_FILE, both for Lua filters and custom writers.
  - Tests: Abstract powerpoint tests out to OOXML tests (Jesse Rosenthal). There is very little pptx-specific in these tests, so we abstract out the basic testing function so it can be used for docx as well. This should allow us to catch some errors in the docx writer that slipped by the roundtrip testing.
  - Lua filters: store constructors in registry (Albert Krewinkel). Lua functions used to construct AST element values are stored in the Lua registry for quicker access. Getting a value from the registry is much faster than getting a global value (partly to idiosyncrasies of hslua); this change results in a considerable performance boost.
  - Documentation:
    - doc/org.md Add draft of Org-mode documentation (Albert Krewinkel).
    - doc/lua-filters.md: document global vars set for filters (Albert Krewinkel).
    - INSTALL.md: mention Stack version. (#4343, Adam Brandizzi).
    - MANUAL: add documentation on custom styles (Jesse Rosenthal).
    - MANUAL.txt: Document incremental and nonincremental divs (Jesse Rosenthal). Blockquoted lists are still described, but fenced divs are presented in preference.
    - MANUAL.txt: document header and footer variables (newmana).
    - MANUAL.txt: self-contained implies standalone (#4304, Daniel Lublin).
    - CONTRIBUTING.md: label was renamed. (#4310, Alexander Brandizzi).
  - Require tagsoup 0.14.3 (#4282), fixing HTML tokenization bug.
  - Use latest texmath.
  - Use latest pandoc-citeproc.
  - Allow exceptions 0.9.
  - Require aeson-pretty 0.8.5 (#4394).
  - Bump blaze-markup, blaze-html lower bounds to 0.8, 0.9 (#4334).
  - Update tagsoup to 0.14.6 (Alexander Krotov, #4282).
  - Removed ghc-prof-options. As of cabal 1.24, sensible defaults are used.
  - Update default.nix to current nixpkgs-unstable for hslua-0.9.5 (#4348, jarlg).
  pandoc 2.1.1 (2018-01-18)
  - Markdown reader:
    - Don't coalesce adjacent raw LaTeX blocks if they are separated by a blank line. See lierdakil/pandoc-crossref#160.
    - Improved inlinesInBalancedBrackets (#4272, jgm/pandoc-citeproc#315). The change both improves performance and fixes a regression whereby normal citations inside inline notes and figure captions were not parsed correctly.
  - RST reader:
    - Better handling for headers with an anchor (#4240). Instead of creating a Div containing the header, we put the id directly on the header. This way header promotion will work properly.
    - Add aligned environment when needed in math (#4254). rst2latex.py uses an align* environment for math in .. math:: blocks, so this math may contain line breaks. If it does, we put the math in an aligned environment to simulate rst2latex.py's behavior.
  - HTML reader:
    - Fix col width parsing for percentages < 10% (#4262, n3fariox).
  - LaTeX reader:
    - Advance source position at end of stream.
    - Pass through macro defs in rawLaTeXBlock even if the latex_macros extension is set (#4246). This reverts to earlier behavior and is probably safer on the whole, since some macros only modify things in included packages, which pandoc's macro expansion can't modify.
    - Fixed pos calculation in tokenizing escaped space.
    - Allow macro definitions inside macros (#4253). Previously we went into an infinite loop with
      \newcommand{\noop}[1]{#1} \noop{\newcommand{\foo}[1]{#1}} \foo{hi}
    - Fix inconsistent column widths (#4238). This fixes a bug whereby column widths for the body were different from widths for the header in some tables.
  - Docx reader (Jesse Rosenthal):
    - Parse hyperlinks in instrText tags (#3389, #4266). This was a form of hyperlink found in older versions of word. The changes introduced for this, though, create a framework for parsing further fields in MS Word (see the spec, ECMA-376-1:2016, §17.16.5, for more on these fields). We introduce a new module, Text.Pandoc.Readers.Docx.Fields which contains a simple parsec parser. At the moment, only simple hyperlink fields are accepted, but that can be extended in the future.
  - Muse reader (Alexander Krotov):
    - Parse ~~ as non-breaking space in Text::Amuse mode.
    - Refactor list parsing.
  - Powerpoint writer (Jesse Rosenthal):
    - Change reference to notesSlide to endNotesSlide.
    - Move image sizing into picProps.
    - Improve table placement.
    - Make our own _rels/.rels file.
    - Import reference-doc images properly.
    - Move Presentation.hs out of PandocMonad.
    - Refactor into separate modules. T.P.W.Powerpoint.Presentation defines the Presentation datatype and goes Pandoc->Presentation; T.P.W.Pandoc.Output goes Presentation->Archive. Text.Pandoc.Writers.Powerpoint a thin wrapper around the two modules.
    - Avoid overlapping blocks in column output.
    - Position images correctly in two-column layout.
    - Make content shape retrieval environment-aware.
    - Improve image handling. We now determine image and caption placement by getting the dimensions of the content box in a given layout. This allows for images to be correctly sized and positioned in a different template. Note that images without captions and headers are no longer full-screened. We can't do this dependably in different layouts, because we don't know where the header is (it could be to the side of the content, for example).
    - Read presentation size from reference file. Our presentation size is now dependent on the reference/template file we use.
    - Handle (sub)headers above slidelevel correctly. Above the slidelevel, subheaders will be printed in bold and given a bit of extra space before them. Note that at the moment, no distinction is made between levels of headers above the slide header, though that can be changed.
    - Check for required files. Since we now import from reference/dist file by glob, we need to make sure that we're getting the files we need to make a non-corrupt Powerpoint. This performs that check.
    - Improve templating using --reference-doc. Templating should work much more reliably now.
    - Include Notes slide in TOC.
    - Set notes slide header to slide-level.
    - Add table of contents. This is triggered by the --toc flag. Note that in a long slide deck this risks overrunning the text box. The user can address this by setting --toc-depth=1.
    - Set notes slide number correctly.
    - Clean up adding metadata slide. We want to count the slide numbers correctly if it's in there.
    - Add anchor links. For anchor-type links ([foo](#bar)) we produce an anchor link. In powerpoint these are links to slides, so we keep track of a map relating anchors to the slides they occur on.
    - Make the slide number available to the blocks. For anchors, block-processing functions need to know what slide number they're in. We make the envCurSlideId available to blocks.
    - Move curSlideId to environment.
    - Allow setting toc-title in metadata.
    - Link notes to endnotes slide.
  - Markdown writer:
    - Fix cell width calculation (#4265). Previously we could get ever-lengthening cell widths when a table was run repeatedly through pandoc -f markdown -t markdown.
  - LaTeX writer:
    - Escape & in lstinline (Robert Schütz).
  - ConTeXt writer:
    - Use xtables instead of Tables (#4223, Henri Menke). Default to xtables for context output. Natural Tables are used if the new ntb extension is set.
  - HTML writer:
    - Fixed footnote backlinks with --id-prefix (#4235).
  - Text.Pandoc.Extensions: Added Ext_ntb constructor (API change, Henri Menke).
  - Text.Pandoc.ImageSize: add derived Eq instance to Dimension (Jesse Rosenthal, API change).
  - Lua filters (Albert Krewinkel):
    - Make PANDOC_READER_OPTIONS available. The options which were used to read the document are made available to Lua filters via the PANDOC_READER_OPTIONS global.
    - Add lua module pandoc.utils.run_json_filter, which runs a JSON filter on a Pandoc document.
    - Refactor filter-handling code into Text.Pandoc.Filter.JSON, Text.Pandoc.Filter.Lua, and Text.Pandoc.Filter.Path.
    - Improve error messages. Provide more context about the task which caused an error.
  - data/pandoc.lua (Albert Krewinkel):
    - Accept singleton inline as a list. Every constructor which accepts a list of inlines now also accepts a single inline element for convenience.
    - Accept single block as singleton list. Every constructor which accepts a list of blocks now also accepts a single block element for convenience. Furthermore, strings are accepted as shorthand for {pandoc.Str "text"} in constructors.
    - Add attr, listAttributes accessors. Elements with attributes got an additional attr accessor. Attributes were accessible only via the identifier, classes, and attributes, which was in conflict with the documentation, which indirectly states that such elements have the an attr property.
    - Drop _VERSION. Having a _VERSION became superfluous, as this module is closely tied to the pandoc version, which is available via PANDOC_VERSION.
    - Fix access to Attr components. Accessing an Attr value (e.g., Attr().classes) was broken; the more common case of accessing it via an Inline or Block element was unaffected by this.
  - Move metaValueToInlines to from Docx writer to Text.Pandoc.Writers.Shared, so it can be used by other writers (Jesse Rosenthal).
  - MANUAL.txt:
    - Clarify otherlangs in LaTeX (#4072).
    - Clarify latex_macros extension.
    - Recommend use of raw_attribute extension in header includes (#4253).
  - Allow latest QuickCheck, tasty, criterion.
  - Remove custom prelude and ghc 7.8 support.
  - Reduce compiler noise (exact paths for compiled modules).
  pandoc 2.1 (2018-01-07)
  - Allow filters and lua filters to be interspersed (#4196). Previously we ran all lua filters before JSON filters. Now we run filters in the order they are presented on the command line, whether lua or JSON. There are two incompatible API changes: The type of applyFilters has changed, and applyLuaFilters has been removed. Filter is also now exported.
  - Use latest skylighting and omit the missingIncludes check, fixing a major performance regression in earlier releases of the 2.x series (#4226). Behavior change: If you use a custom syntax definition that refers to a syntax you haven't loaded, pandoc will now complain when it is highlighting the text, rather than doing a check at the start. This change dramatically speeds up invocations of pandoc on short inputs.
  - Text.Pandoc.Class: make FileTree opaque (don't export FileTree constructor). This forces users to interact with it using insertInFileTree and getFileInfo, which normalize file names.
  - Markdown reader:
    - Rewrite inlinesInBalancedBrackets. The rewrite is much more direct, avoiding parseFromString. And it performs significantly better; unfortunately, parsing time still increases exponentially (see #1735).
    - Avoid parsing raw tex unless \ + letter seen. This seems to help with the performance problem, #4216.
  - LaTeX reader: Simplified a check for raw tex command.
  - Muse reader (Alexander Krotov):
    - Enable round trip test (#4107).
    - Automatically translate #cover into #cover-image. Amusewiki uses #cover directive to specify cover image.
  - Docx reader (Jesse Rosenthal):
    - Allow for insertion/deletion of paragraphs (#3927). If the paragraph has a deleted or inserted paragraph break (depending on the track-changes setting) we hold onto it until the next paragraph. This takes care of accept and reject. For this we introduce a new state which holds the ils from the previous para if necessary. For --track-changes=all, we add an empty span with class paragraph-insertion/paragraph-deletion at the end of the paragraph prior to the break to be inserted or deleted.
    - Remove unused anchors (#3679). Docx produces a lot of anchors with nothing pointing to them---we now remove these to produce cleaner output. Note that this has to occur at the end of the process because it has to follow link/anchor rewriting.
    - Read multiple children of w:sdtContents.
    - Combine adjacent anchors. There isn't any reason to have numerous anchors in the same place, since we can't maintain docx's non-nesting overlapping. So we reduce to a single anchor.
    - Improved tests.
  - Muse writer (Alexander Krotov): don't escape URIs from AST
  - Docx writer:
    - Removed redundant subtitle in title (Sebastian Talmon).
    - firstRow table definition compatibility for Word 2016 (Sebastian Talmon). Word 2016 seems to use a default value of "1" for table headers, if there is no firstRow definition (although a default value of 0 is documented), so all tables get the first Row formatted as header. Setting the parameter to 0 if the table has no header row fixes this for Word 2016
    - Fix custom styles with spaces in the name (#3290).
  - Powerpoint writer (Jesse Rosenthal):
    - Ignore Notes div for parity with other slide outputs.
    - Set default slidelevel correctly. We had previously defaulted to slideLevel 2. Now we use the correct behavior of defaulting to the highest level header followed by content. We change an expected test result to match this behavior.
    - Split blocks correctly for linked images.
    - Combine adjacent runs.
    - Make inline code inherit code size. Previously (a) the code size wasn't set when we force size, and (b) the properties was set from the default, instead of inheriting.
    - Simplify replaceNamedChildren function.
    - Allow linked images. The following markdown: [![Image Title](image.jpg)](http://www.example.com) will now produce a linked image in the resulting PowerPoint file.
    - Fix error with empty table cell. We require an empty <a:p> tag, even if the cell contains no paragraphs---otherwise PowerPoint complains of corruption.
    - Implement two-column slides. This uses the columns/column div format described in the pandoc manual. At the moment, only two columns (half the screen each) are allowed. Custom widths are not supported.
    - Added more tests.
  - OpenDocument/ODT writers: improved rendering of formulas (#4170, oltolm).
  - Lua filters (Albert Krewinkel):
    - data/pandoc.lua: drop 'pandoc-api-version' from Pandoc objects
    - The current pandoc-types version is made available to Lua programs in the global PANDOC_API_VERSION. It contains the version as a list of numbers.
    - The pandoc version available as a global PANDOC_VERSION (a list of numbers).
    - data/pandoc.lua: make Attr an AstElement.
    - data/pandoc.lua: make all types subtypes of AstElement. Pandoc, Meta, and Citation were just plain functions and did not set a metatable on the returned value, which made it difficult to amend objects of these types with new behavior. They are now subtypes of AstElement, meaning that all their objects can gain new features when a method is added to the behavior object (e.g., pandoc.Pandoc.behavior).
    - data/pandoc.lua: split type and behavior tables. Clearly distinguish between a type and the behavioral properties of an instance of that type. The behavior of a type (and all its subtypes) can now be amended by adding methods to that types behavior object, without exposing the type objects internals. E.g.:
      pandoc.Inline.behavior.frob = function () print'42' end local str = pandoc.Str'hello' str.frob() -- outputs '42'
    - data/pandoc.lua: fix Element inheritance. Extending all elements of a given type (e.g., all inline elements) was difficult, as the table used to lookup unknown methods would be reset every time a new element of that type was created, preventing recursive property lookup. This is was changed in that all methods and attributes of supertypes are now available to their subtypes.
    - data/pandoc.lua: fix attribute names of Citation (#4222). The fields were named like the Haskell fields, not like the documented, shorter version. The names are changed to match the documentation and Citations are given a shared metatable to enable simple extensibility.
    - data/pandoc.lua: drop function pandoc.global_filter.
    - Bump hslua version to 0.9.5. This version fixes a bug that made it difficult to handle failures while getting lists or a Map from Lua. A bug in pandoc, which made it necessary to always pass a tag when using MetaList or MetaBlock, is fixed as a result. Using the pandoc module's constructor functions for these values is now optional (if still recommended).
    - Stop exporting pushPandocModule (API change). The introduction of runPandocLua renders direct use of this function obsolete.
    - Update generation of module docs for lua filters.
    - Lua.Module.Utils: make stringify work on MetaValues (John MacFarlane). I'm sure this was intended in the first place, but currently only Meta is supported.
  - Improve benchmarks.
    - Set the default extensions properly.
    - Improve benchmark argument parsing. You can now say make bench BENCHARGS="markdown latex reader" and both the markdown and latex readers will be benchmarked.
  - MANUAL.txt simplify and add more structure (Mauro Bieg).
  - Generate README.md from template and MANUAL.txt. make README.md will generate the README.md after changes to MANUAL.txt have been made.
  - Update copyright notices to include 2018 (Albert Krewinkel).
  pandoc 2.0.6 (2017-12-28)
  - Added jats as an input format.
    - Add Text.Pandoc.Readers.JATS, exporting readJATS (API change) (Hamish Mackenzie).
    - Improved citation handling in JATS reader. JATS citations are now converted to pandoc citations, and JATS ref-lists are converted into a references field in metadata, suitable for use with pandoc-citeproc. Thus a JATS article with embedded bibliographic information can be processed with pandoc and pandoc-citeproc to produce a formatted bibliography.
  - Allow --list-extensions to take an optional FORMAT argument. This lists the extensions set by default for the selected FORMAT. The extensions are now alphabetized, and the + or - indicating the default setting comes before, rather than after, the extension.
  - Markdown reader:
    - Preserve original whitespace between blocks.
    - Recognize \placeformula as context.
    - Be pickier about table captions. A caption starts with a : which can't be followed by punctuation. Otherwise we can falsely interpret the start of a fenced div, or even a table header line like :--:|:--:, as a caption.
    - Always use four space rule for example lists. It would be awkward to indent example list contents to the first non-space character after the label, since example list labels are often long. Thanks to Bernhard Fisseni for the suggestion.
    - Improve raw tex parsing. Note that the Markdown reader is also affected by the latex_macros extension changes described below under the LaTeX reader.
  - LaTeX reader:
    - latex_macros extension changes (#4179). Don't pass through macro definitions themselves when latex_macros is set. The macros have already been applied. If latex_macros is enabled, then rawLaTeXBlock in Text.Pandoc.Readers.LaTeX will succeed in parsing a macro definition, and will update pandoc's internal macro map accordingly, but the empty string will be returned.
    - Export tokenize, untokenize (API change).
    - Use applyMacros in rawLaTeXBlock, rawLaTeXInline.
    - Refactored inlineCommand.
    - Fix bug in tokenizer. Material following ^^ was dropped if it wasn't a character escape. This only affected invalid LaTeX, so we didn't see it in the wild, but it appeared in a QuickCheck test failure.
    - Fix regression in LateX tokenization (#4159). This mainly affects the Markdown reader when parsing raw LaTeX with escaped spaces.
    - Add tests of LaTeX tokenizer.
    - Support \foreignlanguage from babel.
    - Be more tolerant of & character (#4208). This allows us to parse unknown tabular environments as raw LaTeX.
  - Muse reader (Alexander Krotov):
    - Parse anchors immediately after headings as IDs.
    - Require that note references does not start with 0.
    - Parse empty comments correctly.
  - Org reader (Albert Krewinkel):
    - Fix asterisks-related parsing error (#4180).
    - Support minlevel option for includes (#4154). The level of headers in included files can be shifted to a higher level by specifying a minimum header level via the :minlevel parameter. E.g. #+include: "tour.org" :minlevel 1 will shift the headers in tour.org such that the topmost headers become level 1 headers.
    - Break-up org reader test file into multiple modules.
  - OPML reader:
    - Enable raw HTML and other extensions by default for notes (#4164). This fixes a regression in 2.0. Note that extensions can now be individually disabled, e.g. -f opml-smart-raw_html.
  - RST reader:
    - Allow empty list items (#4193).
    - More accurate parsing of references (#4156). Previously we erroneously included the enclosing backticks in a reference ID (#4156). This change also disables interpretation of syntax inside references, as in docutils. So, there is no emphasis in `my *link*`_.
  - Docx reader:
    - Continue lists after interruption (#4025, Jesse Rosenthal). Docx expects that lists will continue where they left off after an interruption and introduces a new id if a list is starting again. So we keep track of the state of lists and use them to define a "start" attribute, if necessary.
    - Add tests for structured document tags unwrapping (Jesse Rosenthal).
    - Preprocess Document body to unwrap w:sdt elements (Jesse Rosenthal, #4190).
  - Plain writer:
    - Don't linkify table of contents.
  - RST writer:
    - Fix anchors for headers (#4188). We were missing an _.
  - PowerPoint writer (Jesse Rosenthal):
    - Treat lists inside BlockQuotes as lists. We don't yet produce incremental lists in PowerPoint, but we should at least treat lists inside BlockQuotes as lists, for compatibility with other slide formats.
    - Add ability to force size. This replaces the more specific blockQuote runProp, which only affected the size of blockquotes. We can use this for notes, etc.
    - Implement notes. This currently prints all notes on a final slide. Note that at the moment, there is a danger of text overflowing the note slide, since there is no logic for adding further slides.
    - Implement basic definition list functionality to PowerPoint writer.
    - Don't look for default template file for Powerpoint (#4181).
    - Add pptx to isTextFormat list. This is used to check standalone and not writing to the terminal.
    - Obey slide level option (Jesse Rosenthal).
    - Introduce tests.
  - Docx writer:
    - Ensure that distArchive is the one that comes with pandoc (#4182). Previously a reference.docx in ~/.pandoc (or the user data dir) would be used instead, and this could cause problems because a user-modified docx sometimes lacks vital sections that we count on the distArchive to supply.
  - Org writer:
    - Do not wrap "-" to avoid accidental bullet lists (Alexander Krotov).
    - Don't allow fn refs to wrap to beginning of line (#4171, with help from Alexander Krotov). Otherwise they can be interpreted as footnote definitions.
  - Muse writer (Alexander Krotov):
    - Don't wrap note references to the next line (#4172).
  - HTML writer:
    - Use br elements in line blocks instead of relying on CSS (#4162). HTML-based templates have had the custom CSS for div.line-block removed. Those maintaining custom templates will want to remove this too. We still enclose line blocks in a div with class line-block.
  - LaTeX writer:
    - Use \renewcommand for \textlatin with babel (#4161). This avoids a clash with a deprecated \textlatin command defined in Babel.
    - Allow fragile=singleslide attribute in beamer slides (#4169).
    - Use \endhead after \toprule in headerless tables (#4207).
  - FB2 writer:
    - Add cover image specified by cover-image meta (Alexander Krotov, #4195).
  - JATS writer (Hamish Mackenzie):
    - Support writing <fig> and <table-wrap> elements with <title> and <caption> inside them by using Divs with class set to one of fig, table-wrap or caption (Hamish Mackenzie). The title is included as a Heading so the constraint on where Heading can occur is also relaxed.
    - Leave out empty alt attributes on links.
    - Deduplicate image mime type code.
    - Make <p> optional in <td> and <th> (#4178).
    - Self closing tags for empty xref (#4187).
    - Improve support for code language.
  - Custom writer:
    - Use init file to setup Lua interpreter (Albert Krewinkel). The same init file (data/init) that is used to setup the Lua interpreter for Lua filters is also used to setup the interpreter of custom writers.lua.
    - Define instances for newtype wrapper (Albert Krewinkel). The custom writer used its own ToLuaStack instance definitions, which made it difficult to share code with Lua filters, as this could result in conflicting instances. A Stringify wrapper is introduced to avoid this problem.
    - Added tests for custom writer.
    - Fixed definition lists and tables in data/sample.lua.
  - Fixed regression: when target is PDF, writer extensions were being ignored. So, for example, pandoc -t latex-smart -o file.pdf did not work properly.
  - Lua modules (Albert Krewinkel):
    - Add pandoc.utils module, to hold utility functions.
    - Create a Haskell module Text.Pandoc.Lua.Module.Pandoc to define the pandoc lua module.
    - Make a Haskell module for each Lua module. Move definitions for the pandoc.mediabag modules to a separate Haskell module.
    - Move sha1 from the main pandoc module to pandoc.utils.
    - Add function pandoc.utils.hierarchicalize (convert list of Pandoc blocks into (hierarchical) list of Elements).
    - Add function pandoc.utils.normalize_date (parses a date and converts it (if possible) to "YYYY-MM-DD" format).
    - Add function pandoc.utils.to_roman_numeral (allows conversion of numbers below 4000 into roman numerals).
    - Add function pandoc.utils.stringify (converts any AST element to a string with formatting removed).
    - data/init.lua: load pandoc.utils by default
    - Turn pipe, read into full Haskell functions. The pipe and read utility functions are converted from hybrid lua/haskell functions into full Haskell functions. This avoids the need for intermediate _pipe/_read helper functions, which have dropped.
    - pandoc.lua: re-add missing MetaMap function. This was a bug introduced in version 2.0.4.
  - Text.Pandoc.Class: Add insertInFileTree [API change]. This gives a pure way to insert an ersatz file into a FileTree. In addition, we normalize paths both on insertion and on lookup.
  - Text.Pandoc.Shared: export blocksToInlines' (API change, Maura Bieg).
  - Text.Pandoc.MIME: Add opus to MIME type table as audio/ogg (#4198).
  - Text.Pandoc.Extensions: Alphabetical order constructors for Extension. This makes them appear in order in --list-extensions.
  - Allow lenient decoding of latex error logs, which are not always properly UTF8-encoded (#4200).
  - Update latex template to work with recent versions of beamer. The old template produced numbered sections with some recent versions of beamer. Thanks to Thomas Hodgson.
  - Updated reference.docx (#4175). Instead of just "Hello, world", the document now contains exemplars of most of the styles that have an effect on pandoc documents. This makes it easier to see the effect of style changes.
  - Removed default.theme data file (#4096). It is no longer needed now that we have --print-highlight-style.
  - Added stack.lts9.yaml for building with lts 9 and ghc 8.0.2. We still need this for the alpine static linux build, since we don't have ghc 8.2.2 for that yet.
  - Removed stack.pkg.yaml. We only really need stack.yaml; we can put flag settings for pandoc-citeproc there.
  - Makefile: Add 'trypandoc' and 'pandoc-templates' targets to make releases easier.
  - MANUAL.txt:
    - Add note on what formats have +smart by default.
    - Use native syntax for custom-style (#4174, Mauro Bieg).
    - Introduce dedicated Extensions section, since some extensions affect formats other than markdown (Mauro Bieg, #4204).
    - Clarify default html output for --section-divs (Richard Edwards).
  - filters.md: say that Text.Pandoc.JSON comes form pandoc-types. Closes jgm/pandoc-website#16.
  - epub.md: Delete removed -S option from command (#4151, Georger Araújo).
  pandoc 2.0.5 (2017-12-12)
  - Fix a bug in 2.0.4, whereby pandoc could not read the theme files generated with --print-highlight-style (#4133). Improve JSON serialization of styles.
  - Fix CSS issues involving line numbers (#4128). Highlighted code blocks are now enclosed in a div with class sourceCode. Highlighting CSS no longer sets a generic color for pre and code; we only set these for class sourceCode.
  - --pdf-engine-opt: fix bug where option order was reversed (#4137).
  - Add PowerPoint (pptx) writer (Jesse Rosenthal). It works following the standard Pandoc conventions for making other sorts of slides. Caveats:
    - Syntax highlighting is not yet implemented. (This is difficult because there are no character classes in Powerpoint.)
    - Footnotes and Definition lists are not yet implemented. (Notes will usually take the form of a final slide.
    - Image placement and auto-resizing has a few glitches.
    - Reference powerpoint files don't work dependably from the command line. This will be implemented, but at the moment users are advised to change themes from within Powerpoint.
  - Create shared Text.Pandoc.Writers.OOXML module (Jesse Rosenthal). This is for functions used by both Powerpoint and Docx writers.
  - Add default pptx data for Powerpoint writer (Jesse Rosenthal).
  - Add empty_paragraphs extension.
    - Deprecate --strip-empty-paragraphs option. Instead we now use an empty_paragraphs extension that can be enabled on the reader or writer. By default, disabled.
    - Add Ext_empty_paragraphs constructor to Extension.
    - Revert "Docx reader: don't strip out empty paragraphs." This reverts commit d6c58eb836f033a48955796de4d9ffb3b30e297b.
    - Implement empty_paragraphs extension in docx reader and writer, opendocument writer, html reader and writer.
    - Add tests for empty_paragraphs extension.
  - Markdown reader:
    - Don't parse native div as table caption (#4119).
    - Improved computation of column widths in pipe tables. Pipe tables with lines longer than the text width (as set by --columns) are now scaled to text width, with the relative widths of columns determined by the ratios between the header lines. Previously we computed column widths using the ratio of header line lengths to column width, so that tables with narrow header lines were extremely thin, which was very rarely the desired result.
  - LaTeX reader: fix \ before newline (#4134). This should be a space, as long as it's not followed by a blank line. This has been fixed at the tokenizer level.
  - Muse reader (Alexander Krotov):
    - Add test for #disable-tables directive in Emacs mode.
    - Don't allow emphasis to be preceded by letter.
    - Add underline support in Emacs Muse mode..
    - Support multiline directives in Amusewiki mode
  - Man writer: omit internal links (#4136). That is, just print the link text without the URL.
  - Markdown reader: accept processing instructions as raw HTML (#4125).
  - Lua filters (Albert Krewinkel):
    - Use script to initialize the interpreter. The file init.lua is used to initialize the Lua interpreter which is used in Lua filters. This gives users the option to require libraries which they want to use in all of their filters, and to extend default modules.
    - Fix package loading for Lua 5.1. The list of package searchers is named package.loaders in Lua 5.1 and LuaJIT, and package.searchers in Lua 5.2 and later.
    - Refactor lua module handling. The integration with Lua's package/module system is improved: A pandoc-specific package searcher is prepended to the searchers in package.searchers. The modules pandoc and pandoc.mediabag can now be loaded via require.
    - Bump lower bound of hslua. The release hslua 0.9.3 contains a new function which makes using Haskell functions as package loaders much easier.
  - reveal.js template: add title-slide identifier to title slide (#4120). This allows it to be styled more easily.
  - LaTeX template: Added support for pagestyle variable (#4135, Thomas Hodgson)
  - Add -threaded to ghc-options for executable (#4130, fixes a build error on linux).
  pandoc 2.0.4 (2017-12-03)
  - Add --print-highlight-style option. This generates a JSON version of a highlighting style, which can be saved as a .theme file, modified, and used with --highlight-style (#4106, #4096).
  - Add --strip-empty-paragraphs option. This works for any input format. It is primarily intended for use with docx and odt documents where empty paragraphs have been used for inter-paragraph spaces.
  - Support --webtex for gfm output.
  - Recognize .muse file extension.
  - Support beamer \alert in LaTeX reader. Closes #4091.
  - Docx reader: don't strip out empty paragraphs (#2252). Users who have a conversion pipeline from docx may want to consider adding --strip-empty-paragraphs to the command line.
  - Org reader (Albert Krewinkel): Allow empty list items (#4090).
  - Muse reader (Alexander Krotov):
    - Parse markup in definition list terms.
    - Allow definition to end with EOF.
    - Make code blocks round trip.
    - Drop common space prefix from list items.
    - Add partial round trip test.
    - Don't interpret XML entities.
    - Remove nested.
    - Parse ~~ as non-breaking space in Emacs mode.
    - Correctly remove indentation from notes. Exactly one space is required and considered to be part of the marker.
    - Allow list items to be empty.
    - Add ordered list test.
    - Add more multiline definition tests.
    - Don't allow blockquotes within lists.
    - Fix reading of multiline definitions.
    - Add inline <literal> support.
    - Concatenate inlines of the same type
  - Docx writer: allow empty paragraphs (#2252).
  - CommonMark/gfm writer:
    - Use raw html for native divs/spans (#4113). This allows a pandoc markdown native div or span to be rendered in gfm using raw html tags.
    - Implement raw_html and raw_tex extensions. Note that raw_html is enabled by default for gfm, while raw_tex is disabled by default.
  - Muse writer (Alexander Krotov):
    - Test that inline math conversion result is normalized. Without normalization this test produced <em>a</em><em>b</em><em>c</em>.
    - Improve inline list normalization and move to writer.
    - Escape hash symbol.
    - Escape ---- to avoid accidental horizontal rules.
    - Escape only </code> inside code tag.
    - Additional <verbatim> is not needed as <code> is verbatim already.
  - LaTeX writer:
    - Allow specifying just width or height for image size. Previously both needed to be specified (unless the image was being resized to be smaller than its original size). If height but not width is specified, we now set width to textwidth. If width but not height is specified, we now set height to textheight. Since we have keepaspectratio, this yields the desired result.
    - Escape ~ and _ in code with --listings (#4111).
  - HTML writer: export tagWithAttributes. This is a helper allowing other writers to create single HTML tags.
  - Let papersizes a0, a1, a2, ... be case-insensitive by converting the case as needed in LaTeX and ConTeXt writers.
  - Change fixDisplayMath from Text.Pandoc.Writers.Shared so that it no longer produces empty Para's as an artifact.
  - Text.Pandoc.Shared.blocksToInlines: rewrote using builder. This gives us automatic normalization, so we don't get for example two consecutive Spaces.
  - Include default CSS for 'underline' class in HTML-based templates.
  - revealjs template: add tex2jax configuration for the math plugin. With the next release of reveal.js, this will fix the problem of $s outside of math contexts being interpreted as math delimiters (#4027).
  - pandoc.lua module for use in lua filters (Albert Krewinkel):
    - Add basic lua List module (#4099, #4081). The List module is automatically loaded, but not assigned to a global variable. It can be included in filters by calling List = require 'List'. Lists of blocks, lists of inlines, and lists of classes are now given List as a metatable, making working with them more convenient. E.g., it is now possible to concatenate lists of inlines using Lua's concatenation operator .. (requires at least one of the operants to have List as a metatable):
      
      function Emph (emph) local s = {pandoc.Space(), pandoc.Str 'emphasized'} return pandoc.Span(emph.content .. s) end
      
      The List metatable is assigned to the tables which get passed to the constructors MetaBlocks, MetaInline, and MetaList. This enables the use of the resulting objects as lists.
    - Lua/StackInstances: push Pandoc and Meta via constructor. Pandoc and Meta elements are now pushed by calling the respective constructor functions of the pandoc Lua module. This makes serialization consistent with the way blocks and inlines are pushed to lua and allows to use List methods with the blocks value.
    - Add documentation for pandoc.List in lua-filters.md.
  - Use latest tagsoup. This fixes a bug in parsing HTML tags with & (but not a valid entity) following them (#4094, #4088).
  - Use skylighting 0.4.4.1, fixing the color of unmarked code text when numberLines is used (#4103).
  - Make normalizeDate more forgiving (Mauro Bieg, #4101), not requiring a leading 0 on single-digit days.
  - Fix --help output for --highlight-style to include FILE (Mauro Bieg, #4095).
  - Clearer deprecation warning for --latexmathml, --asciimathml, -m. Previously we only mentioned --latexmathml, even if -m was used.
  - Changelog: fix description of lua filters in 2.0 release (Albert Krewinkel). Lua filters were initially run after conventional (JSON) filters. However, this was changed later to make it easier to deal with files in the mediabag. The changelog is updated to describe that feature of the 2.0 release correctly.
  - Change Generic JSON instances to TemplateHaskell (Jasper Van der Jeugt, #4085). This reduces compile time and memory usage significantly.
  - lua-filters.md: Added tikz filter example.
  - Create alternative zip file for macOS binaries.
  - Create alternative zip file for Windows binaries.
  - Update INSTALL.md since we now provide zips for binaries.
  - Relax http-types dependency (Justus Sagemüller, #4084).
  - Add epub.md, getting-started.md to docs. These used to live in the website repo.
  - Add packages target to Makefile.
  - Bump bounds for binary, http-types, tasty-hunit
  pandoc 2.0.3 (2017-11-20)
  - Lua filters: preload text module (Albert Krewinkel, #4077). The text module is preloaded in lua. The module contains some UTF-8 aware string functions, implemented in Haskell. The module is loaded on request only, e.g.:
```
text = require 'text'
function Str (s)
  s.text = text.upper(s.text)
  return s
end
```
  - Allow table-like access to attributes in lua filters (Albert Krewinkel, #4071). Attribute lists are represented as associative lists in Lua. Pure associative lists are awkward to work with. A metatable is attached to attribute lists, allowing to access and use the associative list as if the attributes were stored in as normal key-value pair in table. Note that this changes the way pairs works on attribute lists. Instead of producing integer keys and two-element tables, the resulting iterator function now returns the key and value of those pairs. Use ipairs to get the old behavior. Warning: the new iteration mechanism only works if pandoc has been compiled with Lua 5.2 or later (current default: 5.3).
  - Text.Pandoc.Parsing.uri: allow & and = as word characters (#4068). This fixes a bug where pandoc would stop parsing a URI with an empty attribute: for example, &a=&b= wolud stop at a. (The uri parser tries to guess which punctuation characters are part of the URI and which might be punctuation after it.)
  - Introduce HasSyntaxExtensions typeclass (Alexander Krotov, #4074).
    - Added new HasSyntaxExtensions typeclass for ReaderOptions and WriterOptions.
    - Reimplemented isEnabled function from Options.hs to accept both ReaderOptions and WriterOptions.
    - Replaced enabled from CommonMark.hs with new isEnabled.
  - Add amuse extension (Alexander Krotov) to enable Amuse wiki behavior for muse. New Ext_amuse constructor for Extension. Note: this is switched on by default; for Emacs behavior, use muse-amuse.
  - Muse reader (Alexander Krotov):
    - Count only one space as part of list item marker.
    - Produce SoftBreaks on newlines. Now wrapping can be preserved with --wrap=preserve.
    - Add Text::Amuse footnote extensions. Footnote end is indicated by indentation, so footnotes can be placed anywhere in the text, not just at the end of it.
    - Accept Emacs Muse definition lists when -amuse. Emacs Muse does not require indentation.
  - HTML reader:
    - Ensure we don't produce level 0 headers (#4076), even for chapter sections in epubs. This causes problems because writers aren't set up to expect these.
    - Allow spaces after $ and before $ with tex_math_single_backslash. Previously $ \frac{1}{a} < \frac{1}{b} $ was not parsed as math in markdown or html +tex_math_single_backslash.
  - MANUAL: clarify that math extensions work with HTML. Clarify that tex_math_dollars and tex_math_single_backslash will work with HTML as well as Markdown.
  - Creole reader: Fix performance issue for longer lists (Sascha Wilde, #4067).
  - RST reader: better support for 'container' directive (#4066). Create a div, incorporate name attribute and classes.
  - LaTeX reader:
    - Support column specs like *{2}{r} (#4056). This is equivalent to rr. We now expand it like a macro.
    - Allow optional args for parbox (#4056).
    - Allow optional arguments on \footnote (#4062).
  - EPUB writer: Fixed path for cover image (#4069). It was previously media/media/imagename, and should have been media/imagename.
  - Markdown writer: fix bug with doubled footnotes in grid tables (#4061).
  - LaTeX template: include natbib/biblatex after polyglossia (#4073). Otherwise we seem to get an error; biblatex wants polyglossia language to be defined.
  - Added examples to lua filters documentation.
  pandoc 2.0.2 (2017-11-12)
  - Deprecated ancient HTML math methods: --latexmathml, --gladtex, --mimetex, --jsmath.
  - Fixed URIs in data/jats.csl. They were being rendered twice, leading to invalid XML in default JATS output with pandoc-citeproc.
  - lua-filters.md: use real-world man page filter as example.
  - Add lua filter functions walk_inline and walk_block in the pandoc module, to apply filters inside particular inline and block elements.
  - Refactored some code from Text.Pandoc.Lua.PandocModule into new internal module Text.Pandoc.Lua.Filter.
  - Markdown reader:
    - Allow fenced code blocks to be indented 1-3 spaces (#4011). This brings our handling of them into alignment with CommonMark's.
    - Fix YAML metadata with "chomp" (|-). Previously if a YAML block under |- contained a blank line, pandoc would not parse it as metadata.
  - Removed etc. from abbreviations file. Often etc. ends a sentence, and we want the period to be treated as a sentence-ending period.
  - Fix regression with --metadata (#4054). Values specified with --metadata should replace a metadata value set in the document itself, rather than creating a list including a new value.
  - EPUB writer:
    - Fix EPUB OCF structure. #3720 had been improperly implemented.
    - Fix modified paths for raw HTML tags (src, poster, etc.) (#4050, #4055). This had not been updated for the new EPUB container layout, with a separate text/ subdirectory.
    - Fix image paths with empty --epub-subdirectory.
  - Miscellaneous code cleanup (Alexander Krotov).
  - Use pandoc-types 1.17.3, which adds Walkable instances for [Block] Block and [Inline] Inline.
  - Remove obsolete stack.full.yaml (#4052).
  - Change to using pandoc-citeproc 0.12.1 in binary packages.
  - Consolidate math output method documentation (#4049, Mauro Bieg).
  - MANUAL.txt: fix header level of "Extension: emoji" (Albert Krewinkel).
  - Use lua filter to generate man page from MANUAL.txt, replacing old Haskell filters. This is easier and faster.
  - Improved INSTALL.md.
  - Update commands to extract deb archive on Linux (#4043, Salim B).
  pandoc 2.0.1.1 (2017-11-04)
  - Improved fix to #3989 (parsing of HTML tags containing > in an attribute or comment). The previous fix (in 2.0.1) only worked in certain cases.
  - FB2 writer (Alexander Krotov):
    - Add unrecognised genre to <title-info> (Alexander Krotov). XML schema requires at least one genre.
    - Remove <annotation> from <body>.
  - CommonMark writer: fix strikethrough for gfm (#4038).
  - Use texmath 0.10, which adds support for a wider range of symbols and fixes default column alignments in MathML and OMML.
  - Highlighting fixes, using skylighting 0.4.3.2:
    - Fix invalid CSS.
    - Support lineAnchors (or line-anchors) in HTML code blocks.
    - Ensure that code lines don't get duplicate identifiers (#4031). The line identifiers are built using the code block's identifier as a prefix. If the code block has null identifier, we use cb1, cb2, etc.
  - Added a few abbreviations to data/abbreviations, and sorted the list (#3984, Wandmalfarbe).
  - Improved support for columns in HTML writer (#4028).
    - Remove width attribute from the div.
    - Remove space between <div class="column"> elements, since this prevents columns whose widths sum to 100% (the space takes up space).
    - Move as much as possible of the CSS to the template.
    - Ensure that all the HTML-based templates (including epub) contain the CSS for columns.
    - Columns default to 50% width unless they are given a width attribute. So if you want two equal-width columns, you can use a div with class column and no width attribute.
  - SelfContained: use base64 for css links with media attribute (#4026). This fixes --self-contained with S5.
  - Improve pandoc-template-mode.el (Vaclav Haisman).
  - INSTALL.md: MacOS instructions needed xar -f (adam234).
  - MANUAL.txt:
    - Clarify that --setext-headers doesn't affect gfm output (#4035).
    - Clarify what is needed to open and close a div in fenced_divs (#4039, Tristano Ajmone).
    - Removed reference to default.beamer in docs (#4024). Also added mention of other templates affecting PDF output with different settings.
  pandoc 2.0.1 (2017-10-31)
  - Fixed regression in parsing of HTML comments in markdown and other non-HTML formats (Text.Pandoc.Readers.HTML.htmlTag) (#4019). The parser stopped at the first > character, even if it wasn't the end of the comment.
  - Creole reader (Sascha Wilde):
    - Fix some minor typos and formatting.
    - Add additional test on nowiki-block after para.
    - Fix lists with trailing white space.
  - LaTeX reader: handle % comment right after command. For example, \emph%.
  - Markdown reader: make sure fenced div closers work in lists. Previously the following failed:
```
::: {.class}
1. one
2. two
:::
```
    and you needed a blank line before the closing :::.
  - Make fenced_divs affect the Markdown writer. If fenced_divs is enabled, Divs will be rendered as fenced divs.
  - LaTeX/Beamer writer: support "blocks" inside columns and other Divs (#4016).
  - HTML Writer: consistently use dashed class-names (Mauro Bieg, #3556). Note: this change may require some changes in CSS rules. footnoteRef has become footnote-ref, titleslide has become title-slide, and footnoteBack has become footnote-back.
  - JATS writer: Properly pass through author metadata (#4020).
  - FB2 writer (Alexander Krotov):
    - Write blocks outside of <p> in definitions.
    - Make bullet lists consistent with ordered lists, repeating the marker for the outer list rather than indenting sublists, since indentation does not work in readers.
    - Add new style FB2 tests.
  - Text.Pandoc.ImageSize: Add Millimeter constructor to Dimension (#4012) [API change]. Now sizes given in 'mm' are no longer converted to 'cm'.
  - Revise documentation of small caps syntax (Andrew Dunning, #4013).
  - Fix broken reference links in manual (Andrew Dunning, #4014)
  - Fixed example of slide columns structure in changelog (#4015). Also documented this feature in MANUAL.txt.
  pandoc 2.0.0.1 (2017-10-30)
  - EPUB writer:
    - Fixed filepaths for nonstandard epub-subdirectory values.
    - Ensure that epub2 is recognized as a non-text format, so that a template is used.
    - Don't include "prefix" attribute for ibooks for epub2. It doesn't validate.
    - Fix stylesheet paths; previously we had an incorrect stylesheet path for the cover page and nav page.
  - LaTeX reader:
    - Insert space when needed in macro expansion (#4007). Sometimes we need to insert a space after a control sequence to prevent it merging with a following letter.
    - Allow unbraced arguments for macros (#4007).
    - Allow body of macro definition to be unbraced (#4007).
  - Linux package build: ensure that pandoc-citeproc is statically linked.
  - trypandoc: add native, ms.
  pandoc 2.0 (2017-10-29)
  
  New features
  - New output format ms (groff ms). Complete support, including tables, math, syntax highlighting, and PDF bookmarks. The writer uses texmath's new eqn writer to convert math to eqn format, so a ms file produced with this writer should be processed with groff -ms -e if it contains math.
  - New output format jats (Journal Article Tag Suite). This is an XML format used in archiving and publishing articles. Note that a URI-encoded CSL stylesheet (data/jats.csl) is added automatically unless a stylesheet is specified using --css.
  - New output format gfm (GitHub-flavored CommonMark) (#3841). This uses bindings to GitHub's fork of cmark, so it should parse gfm exactly as GitHub does (excepting certain postprocessing steps, involving notifications, emojis, etc.). markdown_github has been deprecated in favor of gfm.
  - New output format muse (Emacs Muse) (Alexander Krotov, #3489).
  - New input format gfm (GitHub-flavored CommonMark) (#3841). This uses bindings to GitHub's fork of cmark. markdown_github has been deprecated in favor of gfm.
  - New input format muse (Emacs Muse) reader (Alexander Krotov, #3620).
  - New input format tikiwiki (TikiWiki markup) (rlpowell, #3800).
  - New input format vimwiki (Vimwiki markup) (Yuchen Pei, #3705). Note that there is a new data file, data/vimwiki.css, which can be used to display the HTML produced by this reader and pandoc's HTML writer in the style of vimwiki's own HTML export.
  - New input format creole (Creole 1.0) (#3994, Sascha Wilde).
  - New syntax for Divs, with fenced_divs extension enabled by default (#168). This gives an attractive, plain-text way to create containers for block-level content.
  - Added new syntax for including raw content in any output format, enabled by the raw_attribute extension (which is on by default for markdown and multimarkdown). The syntax is the same as for fenced code blocks or code inlines, only with {=FORMAT} for attributes, where FORMAT is the name of the output format (e.g., ms, html).
  - Implement multicolumn support for slide formats (#1710). The structure expected is:
```
:::::::::::::: {.columns}
::: {.column width="40%"}
contents...
:::
::: {.column width="60%"}
contents...
:::
::::::::::::::
```
    Support has been added for beamer and all HTML slide formats.
  - Allows line comments in templates, beginning with $-- (#3806). (Requires doctemplates 0.2.1.)
  - Add --eol=crlf|lf|native flag and writer option to control line endings (Stefan Dresselhaus, #3663, #2097).
  - Add --log option to save log messages in JSON format to a file (#3392).
  - Add --request-header option, to set request headers when pandoc makes HTTP requests to fetch external resources. For example: --request-header User-Agent:blah.
  - Added lua filters (Albert Krewinkel, #3514). The new --lua-filter option works like --filter but takes pathnames of special lua filters and uses the lua interpreter baked into pandoc, so that no external interpreter is needed. Note that lua filters are all applied after regular filters, regardless of their position on the command line. For documentation of lua filters, see doc/lua-filters.md.
  - Set PANDOC_READER_OPTIONS in environment where filters are run. This contains a JSON representation of ReaderOptions, so filters can access it.
  - Support creation of pdf via groff ms and pdfroff. pandoc -t ms -o output.pdf input.txt.
  - Support for PDF generation via HTML and weasyprint or prince (Mauro Bieg, #3909). pandoc -t html5 -o output.pdf --pdf-engine=prince.
  - Added --epub-subdirectory option (#3720). This specifies the subdirectory in the OCF container that holds the EPUB specific content. We now put all EPUB related content in an EPUB/ subdirectory by default (later this will be configurable).
```
  mimetype
  META-INF/
    com.apple.ibooks.display-options.xml
    container.xml
  EPUB/ <<--configurable-->>
    fonts/ <<--static-->>
    font.otf
  media/ <<--static-->>
    cover.jpg
    fig1.jpg
  styles/ <<--static-->>
    stylesheet.css
  content.opf
  toc.ncx
  text/ <<--static-->>
    ch001.xhtml
```
  - Added --resource-path=SEARCHPATH command line option (#852). SEARCHPATH is separated by the usual character, depending on OS (: on unix, ; on windows). Default resource path is just working directory. However, the working directory must be explicitly specified if the --resource-path option is used.
  - Added --abbreviations=FILE option for custom abbreviations file (#256). Dfault abbreviations file (data/abbreviations) contains a list of strings that will be recognized by pandoc's Markdown parser as abbreviations. (A nonbreaking space will be inserted after the period, preventing a sentence space in formats like LaTeX.) Users can override the default by putting a file abbreviations in their user data directory (~/.pandoc on *nix).
  - Allow a theme file as argument to --highlight-style. Also include a sample, default.theme, in data/.
  - Allow --syntax-definition option for dynamic loading of syntax highlighting definitions (#3334).
  - Lists in markdown by default now use the CommonMark variable nesting rules (#3511). The indentation required for a block-level item to be included in a list item is no longer fixed, but is determined by the first line of the list item. To be included in the list item, a block must be indented to the level of the first non-space content after the list marker. Exception: if are 5 or more spaces after the list marker, then the content is interpreted as an indented code block, and continuation paragraphs must be indented two spaces beyond the end of the list marker. See the CommonMark spec for more details and examples.
    
    Documents that adhere to the four-space rule should, in most cases, be parsed the same way by the new rules. Here are some examples of texts that will be parsed differently:
```
- a
  - b
```
    will be parsed as a list item with a sublist; under the four-space rule, it would be a list with two items.
```
- a

      code
```
    Here we have an indented code block under the list item, even though it is only indented six spaces from the margin, because it is four spaces past the point where a continuation paragraph could begin. With the four-space rule, this would be a regular paragraph rather than a code block.
```
- a

        code
```
    Here the code block will start with two spaces, whereas under the four-space rule, it would start with code. With the four-space rule, indented code under a list item always must be indented eight spaces from the margin, while the new rules require only that it be indented four spaces from the beginning of the first non-space text after the list marker (here, a).
    
    This change was motivated by a slew of bug reports from people who expected lists to work differently (#3125, #2367, #2575, #2210, #1990, #1137, #744, #172, #137, #128) and by the growing prevalance of CommonMark (now used by GitHub, for example). Those who prefer the old behavior can use -f markdown+four_space_rule.
  - Added four_space_rule extension. This triggers the old pandoc parsing rule for content nested under list items (the "four space rule").
  - Added spaced_reference_links extension (#2602). It allows whitespace between the two parts of a reference link: e.g.
```
[a] [b]

[b]: url
```
    This was previously enabled by default; now it is forbidden by default.
  - Add space_in_atx_header extension (#3512). This is enabled by default in pandoc and GitHub markdown but not the other flavors. This requirse a space between the opening #'s and the header text in ATX headers (as CommonMark does but many other implementations do not). This is desirable to avoid falsely capturing things ilke
```
#hashtag
```
    or
```
#5
```
  - Add sourcefile and outputfile template variables (Roland Hieber, #3431).
  - Allow ibooks-specific metadata in epubs (#2693). You can now have the following fields in your YAML metadata, and it will be treated appropriately in the generated EPUB:
```
  ibooks:
    version: 1.3.4
    specified-fonts: false
    ipad-orientation-lock: portrait-only
    iphone-orientation-lock: landscape-only
    binding: true
    scroll-axis: vertical
```
  Behavior changes
  - Reader functions no longer presuppose that CRs have been stripped from the input. (They strip CRs themselves, before parsing, to simplify the parsers.)
  - Added support for translations (localization) (#3559). Currently this only affects the LaTeX reader, for things like \figurename. Translation data files for 46 languages can be found in data/translations.
  - Make --ascii work with DocBook output too.
  - Rename --latex-engine to --pdf-engine, and --latex-engine-opt to --pdf-engine-opt.
  - Removed --parse-raw and readerParseRaw. These were confusing. Now we rely on the +raw_tex or +raw_html extension with latex or html input. Thus, instead of --parse-raw -f latex we use -f latex+raw_tex, and instead of --parse-raw -f html we use -f html+raw_html.
  - With --filter R filters are now recognized, even if they are not executable (#3940, #3941, Andrie de Vries).
  - Support SVG in PDF output, converting with rsvg2pdf (#1793).
  - Make epub an alias for epub3, not epub2.
  - Removed --epub-stylesheet; use --css instead (#3472, #847). Multiple stylesheets may be used. Stylesheets will be taken both from --css and from the stylesheet metadata field (which can contain either a file path or a list of them).
  - --mathml and MathML in HTMLMathMethod no longer take an argument. The argument was for a bridge JavaScript that used to be necessary in 2004. We have removed the script already.
  - --katex improvements. The latest version is used, and the autoload script is loaded by default.
  - Change MathJax CDN default since old one is shutting down (#3544). Note: The new URL requires a version number, which we'll have to update manually in subsequent pandoc releases in order to take advantage of mathjax improvements.
  - --self-contained: don't incorporate elements with data-external="1" (#2656). You can leave an external link as it is by adding the attribute data-external="1" to the element. Pandoc will then not try to incorporate its content when --self-contained is used. This is similar to a feature already supported by the EPUB writer.
  - Allow --extract-media to work with non-binary input formats (#1583, #2289). If --extract-media is supplied with a non-binary input format, pandoc will attempt to extract the contents of all linked images, whether in local files, data: uris, or external uris. They will be named based on the sha1 hash of the contents.
  - Make papersize: a4 work regardless of the case of a4. It is converted to a4 in LaTeX and A4 in ConTeXt.
  - Make east_asian_line_breaks affect all readers/writers (#3703).
  - Underlined elements are now treated consistently by readers (#2270, hftf); they are always put in a Span with class underline. This allows the user to treat them differently from other emphasis, using a filter. Docx, Org, Textile, Txt2Tags, and HTML readers have been changed.
  - Improved behavior of auto_identifiers when there are explicit ids (#1745). Previously only autogenerated ids were added to the list of header identifiers in state, so explicit ids weren't taken into account when generating unique identifiers. Duplicated identifiers could result. This simple fix ensures that explicitly given identifiers are also taken into account.
  - Use table-of-contents for contents of toc, make toc a boolean (#2872). Changed markdown, rtf, and HTML-based templates accordingly. This allows you to set toc: true in the metadata; this previously produced strange results in some output formats. For backwards compatibility, toc is still set to the toc contents. But it is recommended that you update templates to use table-of-contents for the toc contents and toc for a boolean flag.
  - Change behavior with binary format output to stdout. Previously, for binary formats, output to stdout was disabled unless we could detect that the output was being piped (and not sent to the terminal). Unfortunately, such detection is not possible on Windows, leaving windows users no way to pipe binary output. So we have changed the behavior in the following way:
    - Output to stdout is allowed when it can be determined that the output is being piped (on non-Windows platforms).
    - If the -o option is not used, binary output is never sent to stdout by default; instead, an error is raised.
    - If -o - is used, binary output is sent to stdout, regardless of whether it is being piped. This works on Windows too.
  - Better error behavior: uses of error have been replaced by raising of PandocError, which can be trapped and handled by the calling program.
  - Removed hard_line_breaks extension from markdown_github (#3594). GitHub has two Markdown modes, one for long-form documents like READMEs and one for short things like issue comments. In issue comments, a line break is treated as a hard line break. In README, wikis, etc., it is treated as a space as in regular Markdown. Since pandoc is more likely to be used to convert long-form documents from GitHub Markdown, -hard_line_breaks is a better default.
  - Include backtick_code_blocks extension in mardkown_mmd (#3637).
  - Escape MetaString values (as added with -M/--metadata flag) (#3792). Previously they would be transmitted to the template without any escaping. Note that --M title='*foo*' yields a different result from
```
---
title: *foo*
---
```
    In the latter case, we have emphasis; in the former case, just a string with literal asterisks (which will be escaped in formats, like Markdown, that require it).
  - Allow em, cm, in for image height/width in HTML, LaTeX (#3450).
  - HTML writer: Insert data- in front of unsupported attributes. Thus, a span with attribute foo gets written to HTML5 with data-foo, so it is valid HTML5. HTML4 is not affected. This will allow us to use custom attributes in pandoc without producing invalid HTML. (With help from Wandmalfarbe, #3817.)
  - Plain writer: improved super/subscript rendering. We now handle more non-digit characters for which there are sub/superscripted unicode characters. When unicode sub/superscripted characters are not available, we use _(..) or ^(..) (#3518).
  - Docbook, JATS, TEI writers: print INFO message when omitting interior header (#3750). This only applies to section headers inside list items, e.g., which were otherwise silently omitted.
  - Change to --reference-links in Markdown writer (#3701). With --reference-location of section or block, pandoc will now repeat references that have been used in earlier sections. The Markdown reader has also been modified, so that exactly repeated references do not generate a warning, only references with the same label but different targets. The idea is that, with references after every block, one might want to repeat references sometimes.
  - ODT/OpenDocument writer:
    - Support lang attribute (#1667).
    - Added support for --toc (#2836). Thanks to @anayrat.
  - Docx writer:
    - lang meta, see #1667 (Mauro Bieg, #3515).
    - Change FigureWithCaption to CaptionedFigure (iandol, #3658).
    - Use Table rather than Table Normal for table style (#3275). Table Normal is the default table style and can't be modified.
    - Pass through comments (#2994). We assume that comments are defined as parsed by the docx reader:
      
      I want I left a comment.some text to have a comment on it.
      
      We assume also that the id attributes are unique and properly matched between comment-start and comment-end.
    - Bookmark improvements. Bookmark start/end now surrounds content rather than preceding it. Bookmarks generated for Div with id (jgm/pandoc-citeproc#205).
    - Add keywords metadata to docx document properties (Ian).
  - RST writer: support unknown interpreted text roles by parsing them as Span with role attributes (#3407). This way they can be manipulated in the AST.
  - HTML writer:
    - Line block: Use class instead of style attribute (#1623). We now issue <div class="line-block"> and include a default definition for line-block in the default templates, instead of hard-coding a style on the div.
    - Add class footnoteBack to footnote back references (Timm Albers). This allows for easier CSS styling.
    - Render SmallCaps as span with smallcaps class (#1592), rather than using a style attribute directly. This gives the user more flexibility in styling small caps in CSS.
    - With reveal.js we use data-src instead of src for images for lazy loading.
    - Special-case .stretch class for images in reveal.js (#1291). Now in reveal.js, an image with class stretch in a paragraph by itself will stretch to fill the whole screen, with no caption or figure environment.
  - Added warnings for non-rendered blocks to writers.
  - Writers now raise an error on template failure.
  - When creating a PDF via LaTeX, warn if the font is missing some characters (#3742).
  - Remove initial check for PDF-creating program (#3819). Instead, just try running it and raise the exception if it isn't found at that point. This improves things for users of Cygwin on Windows, where the executable won't be found by findExecutable unless .exe is added. The same exception is raised as before, but at a later point.
  - Readers issue warning for duplicate header identifiers (#1745). Autogenerated header identifiers are given suffixes so as not to clash with previously used header identifiers. But they may still coincide with an explicit identifier that is given for a header later in the document, or with an identifier on a div, span, link, or image. We now issue a warning in this case, so users can supply an explicit identifier.
  - CommonMark reader now supports emoji, hard_line_breaks, smart, and raw_html extensions.
  - Markdown reader:
    - Don't allow backslash + newline to affect block structure (#3730). Note that as a result of this change, the following, which formerly produced a header with two lines separated by a line break, will now produce a header followed by a paragraph:
      
      Hi\
      
      there
      
      This may affect some existing documents that relied on this undocumented and unintended behavior. This change makes pandoc more consistent with other Markdown implementations, and with itself (since the two-space version of a line break doesn't work inside ATX headers, and neither version works inside Setext headers).
  - Org reader (Albert Krewinkel, unless noted):
    - Support table.el tables (#3314).
    - Support macros (#3401).
    - Support the #+INCLUDE: file inclusion mechanism (#3510). Recognized include types are example, export, src, and normal org file inclusion. Advanced features like line numbers and level selection are not implemented yet.
    - Interpret more meta value as inlines. The values of the following meta variables are now interpreted using org-markup instead of treating them as pure strings: keywords (comma-separated list of inlines), subtitle (inline values), nocite (inline values, can be repeated).
    - Support \n export option (#3940). This turns all newlines in the text into hard linebreaks.
  - RST reader:
    - Improved admonition support (#223). We no longer add an admonition class, we just use the class for the type of admonition, note for example. We put the word corresponding to the label in a paragraph inside a Div at the beginning of the admonition with class admonition-title. This is about as close as we can get to RST's own output.
    - Initial support of .. table directive. This allows adding captions to tables.
    - Support .. line-block directive. This is deprecated but may still be in older documents.
    - Support scale and align attributes of images (#2662).
    - Implemented implicit internal header links (#3475).
    - Support RST-style citations (#853). The citations appear at the end of the document as a definition list in a special div with id citations. Citations link to the definitions.
    - Recurse into bodies of unknown directives (#3432). In most cases it's better to preserve the content than to emit it. This isn't guaranteed to have good results; it will fail spectacularly for unknown raw or verbatim directives.
    - Handle chained link definitions (#262). For example,
      
      .. _hello: .. _goodbye: example.com
      
      Here both hello and goodbye should link to example.com.
    - Support anchors (#262). E.g.
      
      `hello` .. _hello: paragraph
      
      This is supported by putting "paragraph" in a Div with id hello.
    - Support :widths: attribute for table directive.
    - Implement csv-table directive (#3533). Most attributes are supported, including :file: and :url:.
    - Support unknown interpreted text roles by parsing them as Span with "role" attributes (#3407). This way they can be manipulated in the AST.
  - HTML reader: parse a span with class smallcaps as SmallCaps.
  - LaTeX reader:
    - Implemented \graphicspath (#736).
    - Properly handle column prefixes/suffixes. For example, in \begin{tabular}{>{$}l<{$}>{$}l<{$} >{$}l<{$}} each cell will be interpreted as if it has a $ before its content and a $ after (math mode).
    - Handle komascript \dedication (#1845). It now adds a dedication field to metadata. It is up to the user to supply a template that uses this variable.
    - Support all \textXX commands, where XX = rm, tt, up, md, sf, bf (#3488). Spans with a class are used when there is nothing better.
    - Expand \newenvironment macros (#987).
    - Add support for LaTeX subfiles package (Marc Schreiber, #3530).
    - Better support for subfigure package (#3577). A figure with two subfigures turns into two pandoc figures; the subcaptions are used and the main caption ignored, unless there are no subcaptions.
    - Add support for \vdots (Marc Schreiber, #3607).
    - Add basic support for hyphenat package (Marc Schreiber, #3603).
    - Add basic \textcolor support (Marc Schreiber).
    - Add support for tabularx environment (Marc Schreiber, #3632).
    - Better handling of comments inside math environments (#3113). This solves a problem with commented out \end{eqnarray} inside an eqnarray (among other things).
    - Parse tikzpicture as raw verbatim environment if raw_tex extension is selected (#3692). Otherwise skip with a warning. This is better than trying to parse it as text!
    - Add \colorbox support (Marc Schreiber).
    - Set identifiers on Spans used for \label.
    - Have \setmainlanguage set lang in metadata.
    - Support etoolbox's \ifstrequal.
    - Support plainbreak, fancybreak et al from the memoir class (bucklereed, #3833).
    - Support \let. Also, fix regular macros so they're expanded at the point of use, and NOT also the point of definition. \let macros, by contrast, are expanded at the point of definition. Added an ExpansionPoint field to Macro to track this difference.
    - Support simple \def macros. Note that we still don't support macros with fancy parameter delimiters, like \def\foo#1..#2{...}.
    - Support \chaptername, \partname, \abstractname, etc. (#3559, obsoletes #3560).
    - Put content of \ref, \label, \eqref commands into Span with attributes, so they can be handled in filters (Marc Schreiber, #3639)
    - Add Support for glossaries and acronym package (Marc Schreiber, #3589). Acronyms are not resolved by the reader, but acronym and glossary information is put into attributes on Spans so that they can be processed in filters.
    - Use Link instead of Span for \ref. This makes more sense semantically and avoids unnecessary Span [Link] nestings when references are resolved.
    - Rudimentary support for \hyperlink.
    - Support \textquoteleft|right, \textquotedblleft|right (#3849).
    - Support \lq, \rq.
    - Implement \newtoggle, \iftoggle, \toggletrue|false from etoolbox (#3853).
    - Support \RN and \Rn, from biblatex (bucklereed, #3854).
    - Improved support for \hyperlink, \hypertarget (#2549).
    - Support \k ogonek accent.
    - Improve handling of accents. Handle ogonek, and fall back correctly with forms like \"{}.
    - Better support for ogonek accents.
    - Support for \faCheck and \faClose (Marc Schreiber, #3727).
    - Support for xspace (Marc Schreiber, #3797).
    - Support \setmainlanguage or \setdefaultlanguage (polyglossia) and \figurename.
    - Better handling of \part in LaTeX (#1905). Now we parse chapters as level 0 headers, and parts as level -1 headers. After parsing, we check for the lowest header level, and if it's less than 1 we bump everything up so that 1 is the lowest header level. So \part will always produce a header; no command-line options are needed.
    - Add block version of \textcolor (Marc Schreiber).
    - \textcolor works as inline and block command (Marc Schreiber).
    - \textcolor will be parse as span at the beginning of a paragraph (Marc Schreiber).
    - Read polyglossia/babel \text(LANG){...} (bucklereed)
    - Improved handling of include files in LaTeX reader (#3971). Previously \include wouldn't work if the included file contained, e.g., a begin without a matching end.
    - Support \expandafter (#3983).
    - Handle \DeclareRobustCommand (#3983). Currently it's just treated as a synonym for \newcommand.
    - Handle \lettrine (Mauro Bieg).
  - Math improvements due to updates in texmath:
    - Improved handling of accents and upper/lower delimiters.
    - Support for output in GNU eqn format (used with *roff).
    - Allow \boldsymbol + a token without braces, and similarly with other styling commands.
    - Improve parsing of \mathop to allow multi-character operator names.
    - Add thin space after math operators when "faking it with unicode."
  - walk is now used instead of bottomUp in the ToJSONFilter instance for a -> [a] (pandoc-types). Note that behavior will be slightly different, since bottomUp's treatment of a function [a] -> [a] is to apply it to each sublist of a list, while walk applies it only to maximal sublists. Usually the latter behavior is what is wanted, and the former can be simulated when needed. But there may be existing filters that need to be rewritten in light of the new behavior. Performance should be improved.
  - There are some changes to syntax highlighting due to revisions in the skylighting library:
    - Support for powershell has been added, and many syntax definitions have been updated.
    - Background colors have been added to the kate style.
    - The way highlighted code blocks are formatted in HTML has been changed (David Baynard), in ways that may require changes in hard-coded CSS affecting highlighting. (If you haven't included hard-coded highlighting CSS in your template, you needn't change anything.)
  API changes
  - New module Text.Pandoc.Class (Jesse Rosenthal, John MacFarlane). This contains definitions of the PandocMonad typeclass, the PandocIO and PandocPure monads, and associated functions.
  - Changed types of all writers and readers.
    - We now use Text instead of String in the interface (#3731). (We have not yet changed the internals of most readers to work with Text, but making this change in the API now opens up a path to doing that.)
    - The result is now of form m a with constraint PandocMonad m. Readers and writers can be combined to form monadic values which can be run using either runIO or runPure. If runIO is used, then both readers and writers will be able to do IO when needed (for include files, for example); if runPure is used, then the functions are pure and will not touch IO.
    - Where previously you used writeRST def (readMarkdown def "[foo](url)"), now you would use runPure $ readMarkdown def (pack "[foo](url)") >>= writeRST def.
  - New module Text.Pandoc.Readers (Albert Krewinkel). This contains reader helper functions formerly defined in the top-level Text.Pandoc module.
    - Changed StringReader -> TextReader.
    - getReader now returns a pair of a reader and Extensions, instead of building the extensions into the reader (#3659). The calling code must explicitly set readerExtensions using the Extensions returned. The point of the change is to make it possible for the calling code to determine what extensions are being used.
  - New module Text.Pandoc.Writers (Albert Krewinkel). This contains writer helper functions formerly defined in the top-level Text.Pandoc module.
    - Changed StringWriter -> TextWriter.
    - getWriter now returns a pair of a reader and Extensions, instead of building the extensions into the reader (#3659). The calling code must explicitly set readerExtensions using the Extensions returned. The point of the change is to make it possible for the calling code to determine what extensions are being used.
  - New module Text.Pandoc.Lua, exporting runLuaFilter (Albert Krewinkel, #3514).
  - New module Text.Pandoc.App. This abstracts out the functionality of the command line program (convertWithOpts), so it can be reproduced e.g. in a desktop or web application. Instead of exiting, we throw errors (#3548), which are caught (leading to exit) in pandoc.hs, but allow other users of Text.Pandoc.App to recover. pandoc.hs is now a 2-liner. The module also exports some utility functions for parsing options and running filters.
  - New module Text.Pandoc.Logging (exported module) (#3392). This now contains the Verbosity definition previously in Text.Pandoc.Options, as well as a new LogMessage datatype that will eventually be used instead of raw strings for warnings. This will enable us, among other things, to provide machine-readable warnings if desired. Include ToJSON instance and showLogMessage. This gives us the possibility of both machine-readable and human-readable output for log messages.
  - New module Text.Pandoc.BCP47, with getLang, Lang(..), parseBCP47.
  - New module Text.Pandoc.Translations, exporting Term, Translations, readTranslations.
  - New module Text.Pandoc.Readers.LaTeX.Types', exporting Macro, Tok, TokType, Line, Column`.
  - Text.Pandoc.Error: added many new constructors for PandocError.
  - Expose some previously private modules (#3260). These are often helpful to people writing their own reader or writer modules:
    - Text.Pandoc.Writers.Shared
    - Text.Pandoc.Parsing
    - Text.Pandoc.Asciify
    - Text.Pandoc.Emoji
    - Text.Pandoc.ImageSize
    - Text.Pandoc.Highlighting `
  - New module Text.Pandoc.Extensions (Albert Krewinkel): Extension parsing and processing functions were defined in the top-level Text.Pandoc module. These functions are moved to the Extensions submodule as to enable reuse in other submodules.
  - Add Ext_raw_attribute constructor for Extension.
  - Add Ext_fenced_divs constructor for `Extension'.
  - Add Ext_four_space_rule constructor in Extension.
  - Add Ext_gfm_auto_identifiers constructor for Extension.
  - Add Monoid instance for Extensions.
  - Add Text.Pandoc.Writers.Ms, exporting writeMs.
  - Add Text.Pandoc.Writers.JATS, exporting writeJATS.
  - Add Text.Pandoc.Writers.Muse, exporting writeMuse.
  - Add Text.Pandoc.Readers.Muse, exporting readMuse.
  - Add Text.Pandoc.Readers.TikiWiki, exporting readTikiWiki.
  - Add Text.Pandoc.Readers.Vimwiki, exporting readVimwiki.
  - Add Text.Pandoc.Readers.Creole, exporting readCreole.
  - Export setVerbosity from Text.Pandoc.
  - Text.Pandoc.Pretty: Add Eq instance for Doc.
  - Text.Pandoc.XML: toEntities: changed type to Text -> Text.
  - Text.Pandoc.UTF8:
    - Export fromText, fromTextLazy, toText, toTextLazy. Define toString, toStringLazy in terms of them.
    - Add new functions parameterized on Newline: writeFileWith, putStrWith, putStrLnWith, hPutStrWith, hPutStrLnWith.
  - Text.Pandoc.MediaBag: removed extractMediaBag.
  - Text.Pandoc.Highlighting:
    - highlighting now returns an Either rather than Maybe. This allows us to display error information returned by the skylighting library. Display a warning if the highlighting library throws an error.
    - Add parameter for SyntaxMap to highlight.
  - Text.Pandoc.Writers.Math:
    - Export defaultMathJaxURL, defaultKaTeXURL. This will ensure that we only need to update these in one place.
  - Text.Pandoc.SelfContained:
    - Removed WriterOptions parameter from makeSelfContained.
    - Put makeSelfContained in PandocMonad instead of IO. This removes the need to pass MediaBag around and improves exceptions. It also opens up the possibility of using makeSelfContained purely.
    - Export makeDataURI.
  - Text.Pandoc.ImageSize:
    - Export lengthToDim, new function scaleDimension.
    - Export inEm from ImageSize (#3450).
    - Change showFl and show instance for Dimension so extra decimal places are omitted.
    - Added Em as a constructor of Dimension.
    - Add WriterOptions parameter to imageSize signature (Mauro Bieg).
  - Text.Pandoc.Templates:
    - Change type of renderTemplate'. Now it runs in PandocMonad and raises a proper PandocTemplateError if there are problems, rather than failing with uncatchable error.
    - Change signature of getDefaultTemplate. Now it runs in any instance of PandocMonad, and returns a String rather than an Either value. And it no longer takes a datadir parameter, since this can be retrieved from CommonState.
  - Text.Pandoc.Options:
    - Added writerEpubSubdirectory to WriterOptions (#3720). The EPUB writer now takes its EPUB subdirectory from this option.
    - In WriterOptions, rename writerLaTeXEngine to writerPdfEngine and writerLaTeXArgs to writerPdfArgs (Mauro Bieg, #3909).
    - Add writerSyntaxMap to WriterOptions.
    - Removed writerEpubStylesheet from WriterOptions.
    - Remove writerUserDataDir from WriterOptions. It is now carried in CommonState in PandocMonad instances. (And thus it can be used by readers too.)
    - Changed writerEpubMetadata to a Maybe String.
    - Removed readerApplyMacros from ReaderOptions. Now we just check the latex_macros reader extension.
    - FromJSON/ToJSON instances for ReaderOptions.
    - In HTMLMathMethod, the KaTeX contsructor now takes only one string (for the KaTeX base URL), rather than two.
    - Removed writerSourceURL from WriterOptions. We now use stSourceURL in CommonState, which is set by setInputFiles.
  - Text.Pandoc.Shared:
    - tabFilter now takes a Text, not String.
    - openURL: Changed type from an Either. Now it will just raise an exception to be trapped later.
    - Remove normalizeSpaces (#1530).
    - Remove warn. (Use report from Text.Pandoc.Class instead.)
    - Export a new function crFilter.
    - Add eastAsianLineBreakFilter (previously in Markdown reader).
    - Provide custom isURI that rejects unknown schemes. (Albert Krewinkel, #2713). We also export the set of known schemes. The new function replaces the function of the same name from Network.URI, as the latter did not check whether a scheme is well-known. All official IANA schemes (as of 2017-05-22) are included in the set of known schemes. The four non-official schemes doi, isbn, javascript, and pmid are kept.
    - Remove err.
    - Remove readDataFile, readDefaultDataFile, getReferenceDocx, getReferenceODT. These now live in Text.Pandoc.Class, where they are defined in terms of PandocMonad primitives and have different signatures.
    - Remove openURL. Use openURL from Text.Pandoc.Class instead.
    - Add underlineSpan.
  - Text.Pandoc.Readers.HTML: export new NamedTag class.
  - Text.Pandoc.Readers.Markdown: remove readDocxWithWarnings. With the new API one can simply use getLog after running the reader.
  - Text.Pandoc.Readers.LaTeX: Changed types for rawLaTeXInline and rawLaTeXBlock. (Both now return a String, and they are polymorphic in state.)
  Bug fixes and under-the-hood improvements
  - TEI writer: Added identifiers on <div> elements.
  - DokuWiki reader: Better handling for code block in list item (#3824).
  - Custom writer: Remove old preprocesesor conditionals (Albert Krewinkel).
  - ZimWiki writer: Removed internal formatting from note and table cells, because ZimWiki does not support it (Alex Ivkin, #3446).
  - MediaWiki writer:
    - Updated list of syntax highlighting languages (#3461). Now r gets you <source> rather than <code> (among others).
    - Add display attribute on <math> tags (#3452). This allows display math to be rendered properly.
    - Remove newline before </ref> (#2652).
    - Don't softbreak lines inside list items (#3531).
  - Org writer:
    - Reduce to two spaces after bullets (#3417, Albert Krewinkel).
    - Add unit tests (Alexander Krotov).
    - Stop using raw HTML to wrap divs (Albert Krewinkel, #3771).
    - Do not strip # from Org anchor links (Alexander Krotov).
  - CommonMark writer:
    - Avoid excess blank lines at end of output.
    - Prefer pipe tables to HTML tables even if it means losing relative column width information (#3734).
    - Support table, strikethrough extensions, when enabled (as with gfm). Note that we bypass the commonmark writer from cmark and construct our own pipe tables, with better results.
    - Properly support --wrap=none.
    - Use smallcaps class for SmallCaps (#1592).
    - Omit "fig:" prefix in image titles. This is used internally to indicate internal figures.
  - RST writer:
    - Properly handle table captions.
    - Don't wrap lines in in definition list terms. Wrapping is not allowed.
    - Implemented +/-smart and improved escaping with +smart.
    - Add empty comments when needed to avoid including a blockquote in the indented content of a preceding block (#3675).
    - Improve grid table output, fix bug with empty rows (#3516). Uses the new gridTable in Writers.Shared, which is here improved to better handle 0-width cells.
    - Remove space at beginning/end of RST code span (#3496). Otherwise we get invalid RST. There seems to be no way to escape the space.
    - Add header anchors when header has non-standard id (#3937).
    - Correctly handle inline code containing backticks, using a :literal: role (#3974).
    - Don't backslash-escape word-internal punctuation (#3978).
  - Markdown writer:
    - Don't include variables in metadata blocks. Previously variables set on the command line were included in e.g. YAML metadata, contrary to documentation and intentions.
    - Improved escaping with +smart.
    - Fixed grid tables embedded in grid tables (#2834).
    - Use span with class 'smallcaps' for SmallCaps, instead of a style attribute as before (#1592).
    - Escape initial % in a paragraph if the pandoc_title_blocks extension is enabled (#3454). Otherwise in a document starting with a literal % the first line is wrongly interpreted as a title.
    - Fixed false ordered lists in YAML metadata (#3492, #1685). Now we properly escape things that would otherwise start ordered lists, such as
      
      --- title: 1. inline ...
    - Better handling of tables with empty columns (#3337). We now calculate the number of columns based on the longest row (or the length of aligns or widths).
    - Escape unordered list markers at beginning of paragraph (#3497), to avoid false interpretation as a list.
    - Escape | appropriately.
    - Ensure space before list at top level (#3487).
    - Avoid spurious blanklines at end of document after tables and list, for example.
    - Fixed bugs in simple/multiline list output (#3384). Previously we got overlong lists with --wrap=none. This is fixed. Previously a multiline list could become a simple list (and would always become one with --wrap=none).
    - Don't emit a simple table if simple_tables disabled (#3529).
    - Case-insensitive reference links (David A Roberts, #3616). Ensure that we do not generate reference links whose labels differ only by case. Also allow implicit reference links when the link text and label are identical up to case.
    - Put space before reference link definitions (Mauro Bieg, #3630).
    - Better escaping for links (David A. Roberts, #3619). Previously the Markdown writer would sometimes create links where there were none in the source. This is now avoided by selectively escaping bracket characters when they occur in a place where a link might be created.
    - Added missing \n (David A. Roberts, #3647).
    - Fixed duplicated reference links with --reference-links and --reference-location=section (#3674). Also ensure that there are no empty link references [].
    - Avoid inline surround-marking with empty content (#3715). E.g. we don't want <strong></strong> to become ****. Similarly for emphasis, super/subscript, strikeout.
    - Don't allow soft break in header (#3736).
    - Make sure plain, markdown_github, etc. work for raw. Previously only markdown worked. Note: currently a raw block labeled markdown_github will be printed for any markdown format.
    - Ensure that + and - are escaped properly so they don't cause spurious lists (#3773). Previously they were only if succeeded by a space, not if they were at end of line.
    - Use pipe tables if raw_html disabled and pipe_tables enabled, even if the table has relative width information (#3734).
    - Markdown writer: don't crash on Str "".
    - Make Span with null attribute transparent. That is, we don't use brackets or <span> tags to mark spans when there are no attributes; we simply output the contents.
    - Escape pipe characters when pipe_tables enabled (#3887).
    - Better escaping of < and >. If all_symbols_escapable is set, we backslash escape these. Otherwise we use entities as before.
    - When writing plain, don't use   to separate list and indented code. There's no need for it in this context, since this isn't to be interpreted using Markdown rules.
    - Preserve classes in JS obfuscated links (Timm Albers, #2989). HTML links containing classes originally now preserve them when using javascript email obfuscation.
    - Render SmallCaps as a native span when native_spans are enabled.
    - Always write attributes with bracketed_spans (d-dorazio).
  - Man writer:
    - Fix handling of nested font commands (#3568). Previously pandoc emitted incorrect markup for bold + italic, for example, or bold + code.
    - Avoid error for definition lists with no definitions (#3832).
  - DocBook writer:
    - Fix internal links with writerIdentifierPrefix opt (#3397, Mauro Bieg).
  - Docx writer:
    - Don't include bookmarks on headers unless non-null id (#3476).
    - Support 9 levels of headers (#1642).
    - Allow 9 list levels (#3519).
    - Don't take distArchive from datadir (#3322). The docx writer takes components from the distribution's version of reference.docx when it can't find them in a user's custom reference.docx. Previously, we allowed a reference.docx in the data directory (e.g. ~/.pandoc) to be used as the distribution's reference.docx. This led to a bizarre situation where pandoc would produce a good docx using --template ~/.pandoc/ref.docx, but if ref.docx were moved to ~/.pandoc/reference.docx, it would then produce a corrupted docx.
    - Fixed handling of soft hyphen (0173) (#3691).
    - Better handling of keywords (#3719).
    - Cleaner code for handling dir and style attributes for Div.
    - Use Set for dynamic styles to avoid duplicates.
    - Removed redundant element from data/docx/word/numbering.xml. The elements we need are generated when the document is compiled; this didn't do anything.
    - Activate evenAndOddHeaders from reference docx (#3901, Augustín Martín Barbero).
  - ODT/OpenDocument writer:
    - Calculate aspect ratio for percentage-sized images (Mauro Bieg, #3239).
    - Use more widely available bullet characters (#1400). The old characters weren't available in some font sets. These seem to work well on Windows and Linux versions of LibreOffice.
    - Wider labels for lists (#2421). This avoids overly narrow labels for ordered lists with () delimiters. However, arguably it creates overly wide labels for bullets. Also, lists now start flush with the margin, rather than indented.
    - Fixed dropped elements in some ordered lists (#2434).
  - FB2 writer:
    - Don't render RawBlock as code.
    - Don't fail with an error on interior headers (e.g. in list) (#3750). Instead, omit them with an INFO message.
    - Add support for "lang" metadata (Alexander Krotov, #3625).
    - Format LineBlock as poem (Alexander Krotov). Previously writer produced one paragraph with <empty-line/> elements, which are not allowed inside <p> according to FB2 schema.
    - Replace concatMap with cMap (Alexander Krotov).
    - Write FB2 lists without nesting blocks inside <p> (Alexander Krotov, #4004)
  - HTML writer:
    - Make sure html4, html5 formats work for raw blocks/inlines.
    - Render raw inline environments when --mathjax used (#3816). We previously did this only with raw blocks, on the assumption that math environments would always be raw blocks. This has changed since we now parse them as inline environments.
    - Ensure we don't get two style attributes for width and height.
    - Report when not rendering raw inline/block.
    - Issue warning if no title specified and template used (#3473).
    - Info message if lang is unspecified (#3486).
    - Removed unused parameter in dimensionsToAttributeList.
    - Avoid two class attributes when adding uri class (#3716).
    - Fix internal links with writerIdentifierPrefix opt (#3397, Mauro Bieg).
    - Use revealjs's math plugin for mathjax (#3743). This is a thin wrapper around mathjax that makes math look better on revealjs.
    - Slidy: use h1 for all slides, even if they were originally level 2 headers (#3566). Otherwise the built-in table of contents in Slidy breaks.
  - LaTeX writer:
    - Don't render LaTeX images with data: URIs (#3636). Note that --extract-media can be used when the input contains data: URIs.
    - Make highlighted code blocks work in footnotes (Timm Albers).
    - Don't use figure inside table cell (#3836).
    - Use proper code for list enumerators (#3891). This should fix problems with lists that don't use arabic numerals.
    - Always add hypertarget when there's a non-empty identifier (#2719). Previously the hypertargets were only added when there was actually a link to that identifier.
    - Use % after hypertarget before code block.
    - Add \leavevmode before hypertarget at start of paragraph (#2704, fixes formatting problems in beamer citations).
    - Don't use lstinline in \item[..] (#645). If you do, the contents of item disappear or are misplaced. Use \texttt instead.
    - Fix problem with escaping in lstinline (#1629). Previously the LaTeX writer created invalid LaTeX when --listings was specified and a code span occurred inside emphasis or another construction.
    - Fix error with line breaks after empty content (#2874). LaTeX requires something before a line break, so we insert a ~ if no printable content has yet been emitted.
    - Use BCP47 parser.
    - Fixed detection of otherlangs (#3770). We weren't recursing into inline contexts.
    - Handle language in inline code with --listings (#3422).
    - Write euro symbol directly in LaTeX (Andrew Dunning, #3801). The textcomp package allows pdfLaTeX to parse € directly, making the \euro command unneeded.
    - Fixed footnotes in table captions (#2378). Note that if the table has a first page header and a continuation page header, the notes will appear only on the first occurrence of the header.
    - In writeBeamer output, allow hyperlinks to frames (#3220). Previously you could link to a header above or below slide level but not to slide level. This commit changes that. Hypertargets are inserted inside frame titles; technically the reference is to just after the title, but in normal use (where slides are viewed full screen in a slide show), this does not matter.
    - Remove \strut at beginning of table cells (#3436). This fixes a problem with alignment of lists in table cells. The \strut at the end seems to be enough to avoid the too-close spacing that motivated addition of the strut in #1573.
    - Add partial siunitx Support (Marc Schreiber, #3588).
  - ConTeXt writer:
    - Refactored to use BCP47 module.
    - Remove unnecessary $ (Alexander Krotov, #3482).
    - Use header identifiers for chapters (#3968).
  - EPUB writer:
    - title_page.xhtml is now put in text/.
    - Don't strip formatting in TOC (#1611).
  - Textile reader:
    - Fix bug for certain links in table cells (#3667).
    - Allow 'pre' code in list item (#3916).
  - HTML reader:
    - Added warnings for ignored material (#3392).
    - Better sanity checks to avoid parsing unintended things as raw HTML in the Markdown reader (#3257).
    - Revise treatment of li with id attribute (#3596). Previously we always added an empty div before the list item, but this created problems with spacing in tight lists. Now we do this: If the list item contents begin with a Plain block, we modify the Plain block by adding a Span around its contents. Otherwise, we add a Div around the contents of the list item (instead of adding an empty Div to the beginning, as before).
    - Add details tag to list of block tags (#3694).
    - Removed button from block tag list (#3717). It is already in the eitherBlockOrInlineTag list, and should be both places.
    - Use Sets instead of lists for block tag lookup.
    - Rewrote to use Text throughout. Effect on memory usage is modest (< 10%).
    - Use the lang value of <html> to set the lang meta value (bucklereed, #3765).
    - Ensure that paragraphs are closed properly when the parent block element closes, even without </p> (#3794).
    - Parse <figure> and <figcaption> (Mauro Bieg, #3813).
    - Parse <main> like <div role=main> (bucklereed, #3791). <main> closes <p> and behaves like a block element generally
    - Support column alignments (#1881). These can be set either with a width attribute or with text-width in a style attribute.
    - Modified state type to be an instance of HasLogMessages, so registerHeader can issue warnings.
    - </td> or </th> should close any open block tag (#3991).
    - <td> should close an open <th> or <td>.
    - htmlTag improvements (#3989). We previously failed on cases where an attribute contained a > character. This patch fixes the bug, which especially affects raw HTML in Markdown.
  - Txt2Tags reader:
    - Newline is not indentation (Alexander Krotov).
  - MediaWiki reader:
    - Allow extra hyphens after |- in tables (#2649).
    - Allow blank line after table start (#2649).
    - Fixed more table issues (#2649).
    - Ensure that list starts begin at left margin (#2606). Including when they're in tables or other list items.
    - Make smart double quotes depend on smart extension (#3585).
    - Don't do curly quotes inside <tt> contexts (#3585). Even if +smart.
    - Modified state type to be an instance of HasLogMessages, so registerHeader can issue warnings.
  - TWiki reader (Alexander Krotov):
    - Remove unnecessary $ (#3597).
    - Simplify linkText (#3605).
  - EPUB reader:
    - Minor refactoring, avoiding explicit MediaBag handling. This all works behind the scenes in CommonState plumbing.
  - Docx reader:
    - Don't drop smartTag contents (#2242).
    - Handle local namespace declarations (#3365). Previously we didn't recognize math, for example, when the xmlns declaration occurred on the element and not the root.
    - More efficient trimSps (#1530). Replacing trimLineBreaks. This does the work of normalizeSpaces as well, so we avoid the need for that function here.
    - Avoid 0-level headers (Jesse Rosenthal, #3830). We used to parse paragraphs styled with "HeadingN" as "nth-level header." But if a document has a custom style named "Heading0", this will produce a 0-level header, which shouldn't exist. We only parse this style if N>0. Otherwise we treat it as a normal style name, and follow its dependencies, if any.
    - Add tests for avoiding zero-level header (Jesse Rosenthal).
  - ODT reader:
    - Replaced collectRights with Rights from Data.Either.
    - Remove dead code (Albert Krewinkel).
  - Org reader (Albert Krewinkel, unless noted).
    - Don't allow tables inside list items (John MacFarlane, #3499).
    - Disallow tables on list marker lines (#3499).
    - Convert markup at beginning of footnotes (John MacFarlane, #3576).
    - Allow emphasized text to be followed by [ (#3577).
    - Handle line numbering switch for src blocks. The line-numbering switch that can be given to source blocks (-n with an start number as an optional parameter) is parsed and translated to a class/key-value combination used by highlighting and other readers and writers.
    - Stop adding rundoc prefix to src params. Source block parameter names are no longer prefixed with rundoc. This was intended to simplify working with the rundoc project, a babel runner. However, the rundoc project is unmaintained, and adding those markers is not the reader's job anyway. The original language that is specified for a source element is now retained as the data-org-language attribute and only added if it differs from the translated language.
    - Allow multi-word arguments to src block params (#3477). The reader now correctly parses src block parameter list even if parameter arguments contain multiple words.
    - Avoid creating nullMeta by applying setMeta directly (Alexander Krotov).
    - Replace sequence . map with mapM.
    - Fix smart parsing behavior. Parsing of smart quotes and special characters can either be enabled via the smart language extension or the ' and - export options. Smart parsing is active if either the extension or export option is enabled. Only smart parsing of special characters (like ellipses and en and em dashes) is enabled by default, while smart quotes are disabled. Previously, all smart parsing was disabled unless the language extension was enabled.
    - Subject full doc tree to headline transformations (Albert Krewinkel, #3695). Emacs parses org documents into a tree structure, which is then post-processed during exporting. The reader is changed to do the same, turning the document into a single tree of headlines starting at level 0.
    - Fix cite parsing behaviour (Herwig Stuetz). Until now, org-ref cite keys included special characters also at the end. This caused problems when citations occur right before colons or at the end of a sentence. With this change, all non alphanumeric characters at the end of a cite key are ignored. This also adds , to the list of special characters that are legal in cite keys to better mirror the behaviour of org-export.
    - Fix module names in haddock comments. Copy-pasting had lead to haddock module descriptions containing the wrong module names.
    - Recognize babel result blocks with attributes (#3706). Babel result blocks can have block attributes like captions and names. Result blocks with attributes were not recognized and were parsed as normal blocks without attributes.
    - Include tags in headlines. The Emacs default is to include tags in the headline when exporting. Instead of just empty spans, which contain the tag name as attribute, tags are rendered as small caps and wrapped in those spans. Non-breaking spaces serve as separators for multiple tags.
    - Respect export option for tags (#3713). Tags are appended to headlines by default, but will be omitted when the tags export option is set to nil.
    - Use tag-name attribute instead of data-tag-name.
    - Use org-language attribute rather than data-org-language.
    - Modified state type to be an instance of HasLogMessages, so registerHeader can issue warnings.
    - End footnotes after two blank lines. Footnotes can not only be terminated by the start of a new footnote or a header, but also by two consecutive blank lines.
    - Update emphasis border chars (#3933). The org reader was updated to match current org-mode behavior: the set of characters which are acceptable to occur as the first or last character in an org emphasis have been changed and now allows all non-whitespace chars at the inner border of emphasized text (see org-emphasis-regexp-components).
  - RST reader:
    - Fixed small bug in list parsing (#3432). Previously the parser didn't handle properly this case:
      
      * - a - b * - c - d
    - Handle multiline cells in simple tables (#1166).
    - Parse list table directive (Keiichiro Shikano, #3432).
    - Make use of anyLineNewline (Alexander Krotov, #3686).
    - Use anyLineNewline in rawListItem (Alexander Krotov, #3702).
    - Reorganize block parsers for ~20% faster parsing.
    - Fixed ..include:: directive (#3880).
    - Handle blank lines correctly in line blocks (Alexander Krotov, #3881). Previously pandoc would sometimes combine two line blocks separated by blanks, and ignore trailing blank lines within the line block.
    - Fix indirect hyperlink targets (#512).
  - Markdown reader:
    - Allow attributes in reference links to start on next line (#3674).
    - Parse YAML metadata in a context that sees footnotes defined in the body of the document (#1279).
    - When splitting pipe table cells, skip tex math (#3481). You might have a | character inside math. (Or for that matter something that the parser might mistake for raw HTML.)
    - Treat span with class smallcaps as SmallCaps. This allows users to specify small caps in Markdown this way: [my text]{.smallcaps} (#1592).
    - Fixed internal header links (#2397). This patch also adds shortcut_reference_links to the list of mmd extensions.
    - Treat certain environments as inline when they occur without space surrounding them (#3309, #2171). E.g. equation, math. This avoids incorrect vertical space around equations.
    - Optimized nonindentSpaces. Makes the benchmark go from 40 to 36 ms.
    - Allow latex macro definitions indented 1-3 spaces. Previously they only worked if nonindented.
    - Improved parsing of indented raw HTML blocks (#1841). Previously we inadvertently interpreted indented HTML as code blocks. This was a regression. We now seek to determine the indentation level of the contents of an HTML block, and (optionally) skip that much indentation. As a side effect, indentation may be stripped off of raw HTML blocks, if markdown_in_html_blocks is used. This is better than having things interpreted as indented code blocks.
    - Fixed smart quotes after emphasis (#2228). E.g. in *foo*'s 'foo'.
    - Warn for notes defined but not used (#1718).
    - Use anyLineNewline (Alexander Krotov).
    - Interpret YAML metadata as Inlines when possible (#3755). If the metadata field is all on one line, we try to interpret it as Inlines, and only try parsing as Blocks if that fails. If it extends over one line (including possibly the | or > character signaling an indented block), then we parse as Blocks. This was motivated by some German users finding that date: '22. Juin 2017' got parsed as an ordered list.
    - Fixed spurious parsing as citation as reference def (#3840). We now disallow reference keys starting with @ if the citations extension is enabled.
    - Parse -@roe as suppress-author citation (pandoc-citeproc#237). Previously only [-@roe] (with brackets) was recognized as suppress-author, and -@roe was treated the same as @roe.
    - Fixed parsing of fenced code after list when there is no intervening blank line (#3733).
    - Allow raw latex commands starting with \start (#3558). Previously these weren't allowed because they were interpreted as starting ConTeXt environments, even without a corresponding \stop...
    - Added inlines, inlines1.
    - Require nonempty alt text for implicit_figures (#2844). A figure with an empty caption doesn't make sense.
    - Removed texmath macro material; now all this is handled in the LaTeX reader functions.
    - Fixed bug with indented code following raw LaTeX (#3947).
  - LaTeX reader:
    - Rewrote LaTeX reader with proper tokenization (#1390, #2118, #3236, #3779, #934, #982). This rewrite is primarily motivated by the need to get macros working properly. A side benefit is that the reader is significantly faster. We now tokenize the input text, then parse the token stream. Macros modify the token stream, so they should now be effective in any context, including math. Thus, we no longer need the clunky macro processing capacities of texmath.
    - Parse \, to \8198 (six-per-em space) (Henri Werth).
    - Allow \newcommand\foo{blah} without braces.
    - Support \lstinputlisting (#2116).
    - Issue warnings when skipping unknown latex commands (#3392).
    - Include contents of \parbox.
    - Allow \hspace and \vspace to count as raw block or inline. Previously we would refuse to parse anything as raw inline if it was in the blockCommands list. Now we allow exceptions if they're listed under ignoreInlines in inlineCommands. This should make it easier e.g. to include an \hspace between two side-by-side raw LaTeX tables.
    - Don't drop contents of \hypertarget.
    - Handle spaces before \cite arguments.
    - Allow newpage, clearpage, pagebreak in inline contexts as well as block contexts (#3494).
    - Treat {{xxx}} the same as {xxx} (#2115).
    - Use pMacroDefinition in macro (for more direct parsing). Note that this means that macro will now parse one macro at a time, rather than parsing a whole group together.
    - Fixed failures on \ref{}, \label{} with +raw_tex. Now these commands are parsed as raw if +raw_tex; otherwise, their argument is parsed as a bracketed string.
    - Don't crash on empty enumerate environment (#3707).
    - Handle escaped & inside table cell (#3708).
    - Handle block structure inside table cells (#3709). minipage is no longer required.
    - Handle some width specifiers on table columns (#3709). Currently we only handle the form 0.9\linewidth. Anything else would have to be converted to a percentage, using some kind arbitrary assumptions about line widths.
    - Make sure \write18 is parsed as raw LaTeX. The change is in the LaTeX reader's treatment of raw commands, but it also affects the Markdown reader.
    - Fixed regression with starred environment names (#3803).
    - Handle optional args in raw \titleformat (#3804).
    - Improved heuristic for raw block/inline. An unknown command at the beginning of the line that could be either block or inline is treated as block if we have a sequence of block commands followed by a newline or a \startXXX command (which might start a raw ConTeXt environment).
    - Don't remove macro definitions from the output, even if Ext_latex_macros is set, so that macros will be applied. Since they're only applied to math in Markdown, removing the macros can have bad effects. Even for math macros, keeping them should be harmless.
    - Removed macro. It is no longer necessary, since the rawLaTeXBlock parser will parse macro definitions. This also avoids the need for a separate latexMacro parser in the Markdown reader.
    - Use label instead of data-label for label in caption (#3639).
    - Fixed space after \figurename etc.
    - Resolve references to section numbers.
    - Fix \let\a=0 case, with single character token.
    - Allow @ as a letter in control sequences. @ is commonly used in macros using \makeatletter. Ideally we'd make the tokenizer sensitive to \makeatletter and \makeatother, but until then this seems a good change.
    - Track header numbers and correlate with labels.
    - Allow ] inside group in option brackets (#3857).
    - lstinline with braces can be used (verb cannot be used with braces) (Marc Schreiber, #3535).
    - Fix keyval function: pandoc did not parse options in braces correctly (Marc Schreiber, #3642).
    - When parsing raw LaTeX commands, include trailing space (#1773). Otherwise things like \noindent foo break and turn into \noindentfoo. Affects -f latex+raw_tex and -f markdown (and other formats that allow raw_tex).
    - Don't treat "..." as Quoted (#3958). This caused quotes to be omitted in \texttt contexts.
    - Add tests for existing \includegraphics behaviour (Ben Firshman).
    - Allow space before = in bracketd options (Ben Firshman).
    - Be more forgiving in parsing command options. This was needed, for example, to make some minted options work.
    - Strip off quotes in \include filenames.
  - Added Text.Pandoc.CSV, simple (unexported) CSV parser.
  - Text.Pandoc.PDF:
    - Got --resource-path working with PDF output (#852).
    - Fetch images when generating PDF via context (#3380). To do this, we create the temp directory as a subdirectory of the working directory. Since context mk IV by default looks for images in the parent directory, this works.
    - Use report instead of warn, make it sensitive to verbosity settings.
    - Use fillMediaBag and extractMedia to extract media to temp dir. This reduces code duplication.
    - html2pdf: use stdin instead of intermediate HTML file
    - Removed useless TEXINPUTS stuff for context2pdf. mkiv context doesn't use TEXINPUTS.
  - Text.Pandoc.Pretty:
    - Simplified definition of realLength.
    - Don't error for blocks of size < 1. Instead, resize to 1 (see #1785).
  - Text.Pandoc.MIME:
    - Use application/javascript (not application/x-javascript).
    - Added emf to mimeTypes with type application/x-msmetafile (#1713).
  - Text.Pandoc.ImageSize:
    - Improve SVG image size code (Marc Schreiber, #3580).
    - Make imageSize recognize basic SVG dimensions (Mauro Bieg, #3462).
  - Use Control.Monad.State.Strict throughout. This gives 20-30% speedup and reduction of memory usage in most of the writers.
  - Use foldrWithKey instead of deprecated foldWithKey.
  - Text.Pandoc.SelfContained:
    - Fixed problem with embedded fonts (#3629).
    - Refactored getData from getDataURI in SelfContained.
    - Don't use data URIs for script or style (#3423). Instead, just use script or style tags with the content inside. The old method with data URIs prevents certain optimizations outside pandoc. Exception: data URIs are still used when a script contains </script> or a style contains </.
    - SelfContained: Handle URL inside material retrieved from a URL (#3629). This can happen e.g. with an @import of a google web font. (What is imported is some CSS which contains an url reference to the font itself.) Also, allow unescaped pipe (|) in URL.
    - Load resources from data-src (needed for lazy loading in reveal.js slide shows).
    - Handle data-background-image attribute on section (#3979).
  - Text.Pandoc.Parsing:
    - Added indentWith (Alexander Krotov, #3687).
    - Added stateCitations to ParserState.
    - Removed stateChapters from ParserState.
    - In ParserState, make stateNotes' a Map, add stateNoteRefs.
    - Added gobbleSpaces and gobbleAtMostSpaces.
    - Adjusted type of insertIncludedFile so it can be used with token parser.
    - Replace old texmath macro stuff from Parsing. Use Macro from Text.Pandoc.Readers.LaTeX.Types instead.
    - Export insertIncludedFile.
    - Added HasLogMessages, logMessage, reportLogMessages (#3447).
    - Replace partial with total function (Albert Krewinkel).
    - Introduce HasIncludeFiles type class (Albert Krewinkel). The insertIncludeFile function is generalized to work with all parser states which are instances of that class.
    - Add insertIncludedFilesF which returns F blocks (Albert Krewinkel). The insertIncludeFiles function was generalized and renamed to insertIncludedFiles'; the specialized versions are based on that.
    - many1Till: Check for the end condition before parsing (Herwig Stuetz). By not checking for the end condition before the first parse, the parser was applied too often, consuming too much of the input. This only affects many1Till p end where p matches on a prefix of end.
    - Provide parseFromString (#3690). This is a version of parseFromString specialied to ParserState, which resets stateLastStrPos at the end. This is almost always what we want. This fixes a bug where _hi_ wasn't treated as emphasis in the following, because pandoc got confused about the position of the last word: - [o] _hi_.
    - Added takeP, takeWhileP for efficient parsing of [Char].
    - Fix blanklines documentation (Alexander Krotov, #3843).
    - Give less misleading line information with parseWithString. Previously positions would be reported past the end of the chunk. We now reset the source position within the chunk and report positions "in chunk."
    - Add anyLineNewline (Alexander Krotov).
    - Provide shared F monad functions for Markdown and Org readers (Albert Krewinkel). The F monads used for delayed evaluation of certain values in the Markdown and Org readers are based on a shared data type capturing the common pattern of both F types.
    - Add returnF (Alexander Krotov).
    - Avoid parsing Notes:** as a bare URI (#3570). This avoids parsing bare URIs that start with a scheme + colon + *, _, or ].
    - Added readerAbbreviations to ParserState. Markdown reader now consults this to determine what is an abbreviation.
    - Combine grid table parsers (Albert Krewinkel, #3638). The grid table parsers for markdown and rst was combined into one single parser gridTable, slightly changing parsing behavior of both parsers: (1) The markdown parser now compactifies block content cell-wise: pure text blocks in cells are now treated as paragraphs only if the cell contains multiple paragraphs, and as plain blocks otherwise. Before, this was true only for single-column tables. (2) The rst parser now accepts newlines and multiple blocks in header cells.
    - Generalize tableWith, gridTableWith (Albert Krewinkel). The parsing functions tableWith and gridTableWith are generalized to work with more parsers. The parser state only has to be an instance of the HasOptions class instead of requiring a concrete type. Block parsers are required to return blocks wrapped into a monad, as this makes it possible to use parsers returning results wrapped in Futures.
  - Text.Pandoc.Shared:
    - Simplify toRomanNumeral using guards (Alexander Krotov, #3445)
    - stringify: handle Quoted better (#3958). Previously we were losing the quotation marks in Quoted elements.
  - Text.Pandoc.Writers.Shared:
    - Export metaToJSON', addVariablesToJSON (#3439). This allows us to add the variables AFTER using the metadata to generate a YAML header (in the Markdown writer).
    - Added unsmartify (previously in RST writer). Undo literal double curly quotes. Previously we left these.
    - Generalize type of metaToJSON so it can take a Text. Previously a String was needed as argument; now any ToJSON instance will do.
    - Added gridTable (previously in Markdown writer).
    - gridTable: Refactored to use widths in chars.
    - gridTable: remove unnecessary extra space in cells.
    - Fixed addVariablesToJSON. It was previously not allowing multiple values to become lists.
    - Pipe tables: impose minimum cell size (see #3526).
  Default template changes
  - HTML templates (including EPUB and HTML slide show templates):
    - Make default.html5 polyglot markup conformant (John Luke Bentley, #3473). Polyglot markup is HTML5 that is also valid XHTML. See https://www.w3.org/TR/html-polyglot. With this change, pandoc's html5 writer creates HTML that is both valid HTML5 and valid XHTML.
    - Regularized CSS in html/epub/html slide templates (#3485). All templates now include code{white-space: pre-wrap} and CSS for q if --html-q-tags is used. Previously some templates had pre and others pre-wrap; the q styles were only sometimes included.
    - CSS for .smallcaps, (Mauro Bieg, #1592)
    - default.revealjs: make history default to true.
    - default.revealjs: use lazy loading (#2283).
    - default.revealjs: add mathjax variable and some conditional code to use the MathJaX plugin.
    - default.slidy uses https instead of http (ickc, #3848).
    - default.dzslides: Load Google Font using HTTPS by default (Yoan Blanc).
  - DocBook5 template: Use lang and subtitle variables (Jens Getreu, #3855).
  - LaTeX/Beamer template:
    - Combine LaTeX/Beamer templates (Andrew Dunning, #3878). default.beamer has been removed; beamer now uses the default.latex template. Beamer-specific parts are conditional on the beamer variable set by the writer. Note that pandoc -D beamer will return this (combined) template.
    - Use xcolor for colorlinks option (Andrew Dunning, #3877). Beamer loads xcolor rather than color, and thus the dvipsnames option doesn't take effect. This also provides a wider range of colour selections with the svgnames option.
    - Use starred versions of xcolor names (Andrew Dunning). Prevents changes to documents defined using the dvipsnames list (e.g. Blue gives a different result with svgnames enabled).
    - Load polyglossia after header-includes (#3898). It needs to be loaded as late as possible.
    - Use unicode-math (Vaclav Haisman). Use mathspec with only XeLaTeX on request.
    - Don't load fontspec before unicode-math (over there). The unicode-math package loads fontspec so explicit loading of fontspec before unicode-math is not necessary.
    - Use unicode-math by default in default.latex template. mathspec will be used in xelatex if the mathspec variable is set; otherwise unicode-math will be used (Václav Haisman).
    - Use dvipsnames options when colorlinks specified (otherwise we get an error for maroon) (Thomas Hodgson).
    - Added beamer titlegraphic and logo variables (Thomas Hodgson).
    - Fix typo in fix for notes in tables (#2378, zeeMonkeez).
    - Fix hyperref options clash (Andrew Dunning, #3847) Avoids an options clash when loading a package (e.g. tufte-latex) that uses hyperref settings different from those in the template.
    - Add natbiboptions variable (#3768).
    - Fix links inside captions in LaTeX output with links-as-notes (Václav Haisman, #3651). Declare our redefined \href robust.
    - Load parskip before hyperref (Václav Haisman, #3654).
    - Allow setting Japanese fonts when using LuaLaTeX (Václav Haisman, #3873). by using the luatexja-fontspec and luatexja-preset packages. Use existing CJKmainfont and CJKoptions template variables. Add luatexjafontspecoptions for luatexja-fontspec and luatexjapresetoptions for luatexja-preset.
    - Added aspectratio variable to beamer template (Václav Haisman, #3723).
    - Modified template.latex to fix XeLaTex being used with tables (lwolfsonkin, #3661). Reordered lang variable handling to immediately before bidi.
  - ConTeXt template: Improved font handling: simplefonts is now obsolete in ConTeXt (Pablo Rodríguez).
  Documentation improvements
  - MANUAL.txt:
    - Add URL for Prince HTML > PDF engine (Ian, #3919).
    - Document that content above slide-level will be omitted in slide shows. See #3460, #2265.
    - Explain --webtex SVG url (Mauro Bieg, #3471)
    - Small clarification in YAML metadata section.
    - Document that html4 is technically XHTML 1.0 transitional.
    - Remove refs to highlighting-kate (#3672).
    - Document ibooks specific epub metadata.
    - Clarify that mathml is used for ODT math.
    - Mention limitations of Literate Haskell Support (#3410, Joachim Breitner).
    - Add documentation of limitations of grid tables (Stephen McDowell, #3864).
    - Clarify that meta-json contains transformed values (Jakob Voß, #3491) Make clear that template variable meta-json does not contain plain text values or JSON output format but field values transformed to the selected output format.
  - COPYRIGHT:
    - Clarify that templates are dual-licensed.
    - Clarify that pandoc-types is BSD3 licensed.
    - List new files not written by jgm (Albert Krewinkel).
    - Update dates in copyright notices (Albert Krewinkel). This follows the suggestions given by the FSF for GPL licensed software. https://www.gnu.org/prep/maintain/html_node/Copyright-Notices.html
  - INSTALL.md:
    - Improved instructions for tests with patterns.
    - Put RPM-based distros on separate point (Mauro Bieg, #3449)
  - CONTRIBUTING.md:
    - Fixed typos (Wandmalfarbe, #3479).
    - Add "ask on pandoc-discuss" (Mauro Bieg).
  - Add lua filter documentation in doc/lua-filters.md. Note that the end of this document is autogenerated from data/pandoc.lua using make doc/lua-filters.md, which uses tools/ldoc.ltp (Albert Krewinkel).
  - Add doc/filters.md. This is the old scripting tutorial from the website.
  - Add doc/using-the-pandoc-api.md (#3289). This gives an introduction to using pandoc as a Haskell library.
  Build infrastructure improvements
  - Removed data/templates submodule. Templates are now a subtree in data/templates. This removes the need to do git submodule update.
  - Renamed tests -> test.
  - Remove https flag. Always build with HTTPS support.
  - Use file-embed instead of hsb2hs to embed data files when embed_data_files flag is set. file-embed gives us better dependency tracking: if a data file changes, ghc/stack/cabal know to recompile the Data module. This also removes hsb2hs as a build dependency.
  - Add custom-setup stanza to pandoc, lowercase field names.
  - Add static Cabal flag.
  - Name change OSX -> MacOS. Add a -MacOS suffix to mac package rather than -OSX. Changed local names from osx to macos.
  - make_macos_package.sh - Use strip to reduce executable size.
  - Revised binary linux package. Now a completely static executable is created, using Docker and alpine. We create both a deb and a tarball. The old deb directory has been replaced with a linux directory. Running make in the linux directory should perform the build, putting the binary packages in artifacts/.
  - linux/control.in: add Replaces:, so existing pandoc-citeproc and pandoc-data packages will be uninstalled; this package provides both (#3822). Add latex packages as 'suggested', update description.
  - Remove cpphs build requirement -- it is no longer needed.
  - Replaced {deb,macos,windows}/stack.yaml with stack.pkg.yaml.
  - Name change OSX -> macOS (ickc, #3869).
  - Fix casing of Linux, UNIX, and Windows (ickc).
  - .travis.yml: create a source dist and do cabal build and test there. That way we catch errors due to files missing from the data section of pandoc.cabal.
  - Makefile:
    - Split make haddock from make full.
    - Add BRANCH variable for winpkg.
    - Add lint target.
    - Improve make full. Disable optimizations. Build everything, inc. trypandoc and benchmarks. Use parallel build.
    - Allow make test to take TESTARGS.
  - Added new command tests (Tests.Command), using small text files in test/command/. Any files added in this directory will be treated as shell tests (see smart.md for an example). This makes it very easy to add regression tests etc.
  - Test fixes so we can find data files. In old tests & command tests, we now set the environment variable pandoc_datadir. In lua tests, we set the datadir explicitly.
  - Refactored compareOutput in docx writer test.
  - Consolidated some common functions in Tests.Helper.
  - Small change to unbalanced bracket test to speed up test suite.
  - Speed up Native writer quickcheck tests.
  - Use tasty for tests rather than test-framework.
  - Add simple Emacs mode to help with Pandoc templates editing. (Václav Haisman, #3889). tools/pandoc-template-mode.el
  pandoc 1.19.2.4 (2017-09-10)
  - Add dependencies on texmath and skylighting to the executable. This is needed for dependency version numbers to be available, with Cabal > 2.
  pandoc 1.19.2.3 (2017-09-09)
  - Add CPP to Setup.hs so it works with Cabal >= 2 and < 2.
  pandoc 1.19.2.2 (2017-09-08)
  - Fix build with GHC 8.2.1 (#3876, Peter Simons). Setup.hs does not compile with Cabal 2.x, so we require an earlier version via setup-depends. The following packages need newer versions with GHC 8.2.1 and had their constraints relaxed accordingly: executable-path, process, syb, and time.
  pandoc 1.19.2.1 (2017-01-31)
  - Require skylighting >= 0.1.1.4.
  - Adjust test output for skylighting version.
  - Relax upper bounds on blaze-html and blaze-markup.
  pandoc 1.19.2 (2017-01-29)
  - Use skylighting library instead of highlighting-kate for syntax highlighting. Skylighting is faster and more accurate (#3363). Later we'll be able to add features like warning messages, dynamic loading of xml syntax definitions, and dynamic loading of themes.
  - Added a new highlight style, breezeDark.
  - Text.Pandoc.Highlighting: Update list of listings languages (#3374). This allows more languages to be used when using the --listings option.
  - OpenDocument writer:
    - Small refactoring. Removed separate 'parent' parameter in paraStyle.
    - Don't profilerate text styles unnecessarily (#3371). This change makes the writer create only as many temporary text styles as are absolutely necessary. It also consolidates adjacent nodes with the same style.
  - Org reader (Albert Krewinkel):
    - Allow short hand for single-line raw blocks (Albert Krewinkel, #3366). Single-line raw blocks can be given via #+FORMAT: raw line, where FORMAT must be one of latex, beamer, html, or texinfo.
    - Accept org-ref citations followed by commas (Albert Krewinkel). Bugfix for an issue which, whenever the citation was immediately followed by a comma, prevented correct parsing of org-ref citations.
    - Ensure emphasis markup can be nested. Nested emphasis markup (e.g. /*strong and emphasized*/) was interpreted incorrectly in that the inner markup was not recognized.
    - Remove pipe char irking the haddock coverage tool (Albert Krewinkel).
  - Docx reader: Empty header should be list of lists (Jesse Rosenthal). In the past, the docx reader wrote an empty header as an empty list. It should have the same width as a row (and be filled with empty cells).
  - MediaWiki reader:
    - Improved handling of display math (#3362). Sometimes display math is indented with more than one colon. Previously we handled these cases badly, generating definition lists and missing the math.
    - Fix quotation mark parsing (#3336, tgkokk). Change MediaWiki reader's behavior when the smart option is parsed to match other readers' behavior.
  - Markdown reader:
    - Fixed -f markdown_github-hard_line_breaks+escaped_line_breaks (#3341). Previously this did not properly enable escaped line breaks.
    - Disallow space between inline code and attributes (#3326, #3323, Mauro Bieg).
  - DocBook5 writer: make id attribute xml:id, fixes #3329 (#3330, Mauro Bieg).
  - Added some test cases for ODT reader (#3306, #3308, Hubert Plociniczak).
  - LaTeX writer: allow tables with empty cells to count as "plain." This addresses a problem of too-wide tables when empty cells are used. Thanks to Joost Kremers for reporting the issue.
  - Org writer: prefix footnote numbers with fn: (Albert Krewinkel). Unprefixed numbers where used by older org-mode versions, but are no longer supported.
  - HTML writer: don't process pars with empty RawInline, (#1040, #3327, Mauro Bieg).
  - Markdown writer: Fix display math with --webtex (#3298).
  - Fix sample.lua so it properly handles raw blocks/inlines (#3358, bumper314).
  - Templates:
    - default.latex: Moved geometry after hyperref (Václav Haisman). Otherwise PDF sizes can be wrong in some circumstances.
    - Copied a few changes from default.latex to default.beamer (Wandmalfarbe).
    - default.latex, default.beamer: Changed position of \VerbatimNotes and fancyvrb. This fixes hyperlinks on footnotes in documents that contain verbatim in notes (#3361). (Note: the beamer template was updated to match the LaTeX template, but at this point verbatim in notes seems not to work in beamer.)
    - default.latex: Allow passing microtypeoptions to microtype (Václav Haisman).
    - default.latex: Add hyphen option to url package.
    - default.docbook5: Fix namespace declarations (Mauro Bieg).
  - Moved make_osx_package.sh to osx/ directory.
  - Travis continuous integration:
    - Fix false positives with dist build.
    - Speed improvements (Kolen Cheung, #3304, #3357).
  - MANUAL.txt:
    - Clarify that blank space is needed around footnotes (#3352).
    - Fixed typo (#3351, Alexey Rogechev).
    - Note that --wrap=auto does not work in HTML output.
    - Default --columns width is 72, not 80.
    - Fixed broken links (#3316, Kolen Cheung).
    - Document usage of @* in nocite section (#3333, John Muccigrosso).
  - INSTALL.md:
    - Indent code so it's properly formatted (#3335, Bheesham Persaud).
    - Added instructions for extracting binary from OSX, Windows packages.
  - CONTRIBUTING.md: Describe labels currently used in issue tracker (Albert Krewinkel). The labels have changed over time, the list of labels is updated to reflect the current set of labels used in the issue tracker.
  - Rearrange and extend badges in README (Albert Krewinkel, #3354)
  - Bumped version bounds for dependencies.
  pandoc 1.19.1 (2016-12-10)
  - Set PANDOC_VERSION environment variable for filters (#2640). This allows filters to check the pandoc version that produced the JSON they are receiving.
  - Docx reader: Ensure one-row tables don't have header (#3285, Jesse Rosenthal). Tables in MS Word are set by default to have special first-row formatting, which pandoc uses to determine whether or not they have a header. This means that one-row tables will, by default, have only a header -- which we imagine is not what people want. This change ensures that a one-row table is not understood to be a header only. Note that this means that it is impossible to produce a header-only table from docx, even though it is legal pandoc. But we believe that in nearly all cases, it will be an accidental (and unwelcome) result
  - HTML reader:
    - Fixed some bad regressions in HTML table parser (#3280). This regression leads to the introduction of empty rows in some circumstances.
    - Understand style=width: as well as width in col (#3286).
  - RST reader:
    - Print warnings when keys, substitition, notes not found. Previously the parsers failed and we got raw text. Now we get a link with an empty URL, or empty inlines in the case of a note or substitution.
    - Fix hyperlink aliases (#3283).
  - Man writer: Ensure that periods are escaped at beginning of line (#3270).
  - LaTeX writer: Fix unnumbered headers when used with --top-level (#3272, Albert Krewinkel). Fix interaction of top-level divisions part or chapter with unnumbered headers when emitting LaTeX. Headers are ensured to be written using stared commands (like \subsection*{}).
  - LaTeX template: use comma not semicolon to separate keywords for pdfkeywords. Thanks to Wandmalfarbe.
  - Markdown writer: Fixed incorrect word wrapping (#3277). Previously pandoc would sometimes wrap lines too early due to this bug.
  - Text.Pandoc.Pretty: Added afterBreak [API change]. This makes it possible to insert escape codes for content that needs escaping at the beginning of a line.
  - Removed old MathMLInHTML.js from 2004, which should no longer be needed for MathML with modern browsers.
  - Fixed tests with dynamic linking (#2709).
  - Makefile: Use stack instead of cabal for targets. This is just a convenience for developers.
  - Fixed bash completion of filenames with space (#2749).
  - MANUAL: improved documentation on how to create a custom reference.docx.
  - Fix minor spelling typos in the manual (#3273, Anthony Geoghegan)
  pandoc 1.19 (2016-12-01)
  - Changed resolution of filter paths.
    - We now first treat the argument of --filter as a full (absolute or relative) path, looking for a program there. If it's found, we run it.
    - If not, and if it is a simple program name or a relative path, we try resolving it relative to $DATADIR/filters.
    - If this fails, then we treat it as a program name and look in the user's PATH.
    - Removed a hardcoded '/' that may have caused problems with Windows paths.
    Previously if you did --filter foo and you had foo in your path and also an executable foo in your working directory, the one in the path would be used. Now the one in the working directory is used.
    
    In addition, when you do --filter foo/bar.hs, pandoc will now find a filter $DATADIR/filters/foo/bar.hs -- assuming there isn't a foo/bar.hs relative to the working directory.
  - Allow file:// URIs as arguments (#3196). Also improved default reader format detection. Previously with a URI ending in .md or .markdown, pandoc would assume HTML input. Now it treats these as markdown.
  - Allow to overwrite top-level division type heuristics (#3258, Albert Krewinkel). Pandoc uses heuristics to determine the most reasonable top-level division type when emitting LaTeX or Docbook markup. It is now possible to overwrite this implicitly set top-level division via the top-level-division command line parameter.
  - Text.Pandoc.Options [API changes]:
    - Removed writerStandalone field in WriterOptions, made writerTemplate a Maybe value. Previously setting writerStandalone = True did nothing unless a template was provided in writerTemplate. Now a fragment will be generated if writerTemplate is Nothing; otherwise, the specified template will be used and standalone output generated.
    - Division has been renamed TopLevelDivision (#3197). The Section, Chapter, and Part constructors were renamed to TopLevelSection, TopLevelChapter, and TopLevelPart, respectively. An additional TopLevelDefault constructor was added, which is now also the new default value of the writerTopLevelDivision field in WriterOptions.
  - Improved error if they give wrong arg to --top-level-division.
  - Use new module from texmath to lookup MS font codepoints in Docx reader. Removed unexported module Text.Pandoc.Readers.Docx.Fonts. Its code now lives in texmath (0.9).
  - DocBook reader: Fixed xref lookup (#3243). It previously only worked when the qnames lacked the docbook namespace URI.
  - HTML reader:
    - Improved table parsing (#3027). We now check explicitly for non-1 rowspan or colspan attributes, and fail when we encounter them. Previously we checked that each row had the same number of cells, but that could be true even with rowspans/colspans. And there are cases where it isn't true in tables that we can handle fine -- e.g. when a tr element is empty. So now we just pad rows with empty cells when needed.
    - Treat <math> as MathML by default unless something else is explicitly specified in xmlns. Provided it parses as MathML, of course. Also fixed default which should be to inline math if no display attribute is used.
    - Only treat "a" element as link if it has href (#3226). Otherwise treat as span.
  - Docx reader (Jesse Rosenthal):
    - Add a placeholder value for CHART. We wrap [CHART] in a <span class="chart">. Note that it maps to inlines because, in docx, anything in a drawing tag can be part of a larger paragraph.
    - Be more specific in parsing images We not only want w:drawing, because that could also include charts. Now we specify w:drawing/pic:pic. This shouldn't change behavior at all, but it's a first step toward allowing other sorts of drawing data as well.
    - Abstract out function to avoid code repetition.
    - Update tests for img title and alt (#3204).
    - Handle Alt text and titles in images. We use the "description" field as alt text and the "title" field as title. These can be accessed through the "Format Picture" dialog in Word.
    - Docx reader utils: handle empty namespace in elemName. Previously, if given an empty namespace (elemName ns "" "foo") elemName would output a QName with a Just "" namespace. This is never what we want. Now we output a Nothing. If someone does want a Just "" in the namespace, they can enter the QName value explicitly.
  - ODT reader/writer:
    - Inline code when text has a special style (Hubert Plociniczak). When a piece of text has a text Source_Text then we assume that this is a piece of the document that represents a code that needs to be inlined. Adapted the writer to also reflect that change. Previously it was just writing a 'preformatted' text using a non-distinguishable font style. Code blocks are still not recognized by the ODT reader. That's a separate issue.
    - Infer table's caption from the paragraph (#3224, Hubert Plociniczak). ODT's reader always put empty captions for the parsed tables. This commit
      
      checks paragraphs that follow the table definition
      
      treats specially a paragraph with a style named 'Table'
      
      does some postprocessing of the paragraphs that combines tables followed immediately by captions
      
      The ODT writer used the TableCaption style for the caption paragraph. This commit follows the OpenOffice approach which allows for appending captions to table but uses a built-in style named Table instead of TableCaption. Users of a custom reference.odt should change the style's name from TableCaption to Table.
  - ODT reader: Infer tables' header props from rows (#3199, Hubert Plociniczak). ODT reader simply provided an empty header list which meant that the contents of the whole table, even if not empty, was simply ignored. While we still do not infer headers we at least have to provide default properties of columns.
  - Markdown reader:
    - Allow reference link labels starting with @... if citations extension disabled (#3209). Example: in
      
      \[link text\]\[@a\]
      
      link text isn't hyperlinked because [@a] is parsed as a citation. Previously this happened whether or not the citations extension was enabled. Now it happens only if the citations extension is enabled.
    - Allow alignments to be specified in Markdown grid tables. For example,
      
      +-------+---------------+--------------------+ | Right | Left | Centered | +=========:+:=================+:=============:+ | Bananas | $1.34 | built-in wrapper | +-------+---------------+--------------------+
    - Allow Small Caps elements to be created using bracketed spans (as they already can be using HTML-syntax spans) (#3191, Kolen Cheung).
  - LaTeX reader:
    - Don't treat \vspace and \hspace as block commands (#3256). Fixed an error which came up, for example, with \vspace inside a caption. (Captions expect inlines.)
    - Improved table handling. We can now parse all of the tables emitted by pandoc in our tests. The only thing we don't get yet are alignments and column widths in more complex tables. See #2669.
    - Limited support for minipage.
    - Allow for []s inside LaTeX optional args. Fixes cases like:
    - Handle BVerbatim from fancyvrb (#3203).
    - Handle hungarumlaut (#3201).
    - Allow beamer-style <...> options in raw LaTeX (also in Markdown) (#3184). This allows use of things like \only<2,3>{my content} in Markdown that is going to be converted to beamer.
  - Use pre-wrap for code in dzslides template (Nicolas Porcel). Otherwise overly long code will appear on every slide.
  - Org reader (Albert Krewinkel):
    - Respect column width settings (#3246). Table column properties can optionally specify a column's width with which it is displayed in the buffer. Some exporters, notably the ODT exporter in org-mode v9.0, use these values to calculate relative column widths. The org reader now implements the same behavior. Note that the org-mode LaTeX and HTML exporters in Emacs don't support this feature yet, which should be kept in mind by users who use the column widths parameters.
    - Allow HTML attribs on non-figure images (#3222). Images which are the only element in a paragraph can still be given HTML attributes, even if the image does not have a caption and is hence not a figure. The following will add set the width attribute of the image to 50%:
      
      +ATTR\_HTML: :width 50% ======================= \[\[file:image.jpg\]\]
    - Support ATTR_HTML for special blocks (#3182). Special blocks (i.e. blocks with unrecognized names) can be prefixed with an ATTR_HTML block attribute. The attributes defined in that meta-directive are added to the Div which is used to represent the special block.
    - Support the todo export option. The todo export option allows to toggle the inclusion of TODO keywords in the output. Setting this to nil causes TODO keywords to be dropped from headlines. The default is to include the keywords.
    - Add support for todo-markers. Headlines can have optional todo-markers which can be controlled via the #+TODO, #+SEQ_TODO, or #+TYP_TODO meta directive. Multiple such directives can be given, each adding a new set of recognized todo-markers. If no custom todo-markers are defined, the default TODO and DONE markers are used. Todo-markers are conceptually separate from headline text and are hence excluded when autogenerating headline IDs. The markers are rendered as spans and labelled with two classes: One class is the markers name, the other signals the todo-state of the marker (either todo or done).
  - LaTeX writer:
    - Use \autocites* when "suppress-author" citation used.
    - Ensure that simple tables have simple cells (#2666). If cells contain more than a single Plain or Para, then we need to set nonzero widths and put contents into minipages.
    - Remove invalid inlines in sections (#3218, Hubert Plociniczak).
  - Markdown writer:
    - Fix calculation of column widths for aligned multiline tables (#1911, Björn Peemöller). This also fixes excessive CPU and memory usage for tables when --columns is set in such a way that cells must be very tiny. Now cells are guaranteed to be big enough so that single words don't need to line break, even if this pushes the line length above the column width.
    - Use bracketed form for native spans when bracketed_spans enabled (#3229).
    - Fixed inconsistent spacing issue (#3232). Previously a tight bullet sublist got rendered with a blank line after, while a tight ordered sublist did not. Now we don't get the blank line in either case.
    - Fix escaping of spaces in super/subscript (#3225). Previously two backslashes were inserted, which gave a literal backslash.
    - Adjust widths in Markdown grid tables so that they match on round-trip.
  - Docx writer:
    - Give full detail when there are errors converting tex math.
    - Handle title text in images (Jesse Rosenthal). We already handled alt text. This just puts the image "title" into the docx "title" attr.
    - Fixed XML markup for empty cells (#3238). Previously the Compact style wasn't being applied properly to empty cells.
  - HTML writer:
    - Updated renderHtml import from blaze-html.
  - Text.Pandoc.Pretty:
    - Fixed some bugs that caused blank lines in tables (#3251). The bugs caused spurious blank lines in grid tables when we had things like blankline $$ blankline.
    - Add exported function minOffet [API change] (Björn Peemöller).
    - Added error message for illegal call to block (Björn Peemöller).
  - Text.Pandoc.Shared:
    - Put warn in MonadIO.
    - fetchItem: Better handling of protocol-relative URL (#2635). If URL starts with // and there is no "base URL" (as there would be if a URL were used on the command line), then default to http:.
  - Export Text.Pandoc.getDefaultExtensions [API change] (#3178).
  - In --version, trap error in getAppUserDataDirectory (#3241). This fixes a crash with pandoc --version on unusual systems with no real user (e.g. SQL Server 2016).
  - Added weigh-pandoc for memory usage diagnostics (#3169).
  - Use correct mime types for woff and woff2 (#3228).
  - Remove make_travis_yml.hs (#3235, Kolen Cheung).
  - changelog: Moved an item that was misplaced in the 1.17.2 section to the 1.18 section where it belongs.
  - CONTRIBUTING.md: minor change in wording and punctuation (#3252, Kolen Cheung).
  - Further revisions to manual for --version changes (#3244).
  pandoc 1.18 (2016-10-26)
  - Added --list-input-formats, --list-output-formats, --list-extensions, --list-highlight-languages, and --list-highlight-styles (#3173). Removed list of highlighting languages from --version output. Removed list of input and output formats from default --help output.
  - Added --reference-location=block|section|document option (Jesse Rosenthal). This determines whether Markdown link references and footnotes are placed at the end of the document, the end of the section, or the end of the top-level block.
  - Added --top-level-division=section|chapter|part (Albert Krewinkel). This determines what a level-1 header corresponds to in LaTeX, ConTeXt, DocBook, and TEI output. The default is section. The --chapters option has been deprecated in favor of --top-level-division=chapter.
  - Added LineBlock constructor for Block (Albert Krewinkel). This is now used in parsing RST and Markdown line blocks, DocBook linegroup/line combinations, and Org-mode VERSE blocks. Previously Para blocks with hard linebreaks were used. LineBlocks are handled specially in the following output formats: AsciiDoc (as [verse] blocks), ConTeXt (\startlines/\endlines), HTML (div with a style), Markdown (line blocks if line_blocks is enabled), Org-mode (VERSE blocks), RST (line blocks). In other output formats, a paragraph with hard linebreaks is emitted.
  - Allow binary formats to be written to stdout (but not to tty) (#2677). Only works on posix, since we use the unix library to check whether output is to tty. On Windows, pandoc works as before and always requires an output file parameter for binary formats.
  - Changed JSON output format (Jesse Rosenthal). Previously we used generically generated JSON, but this was subject to change depending on the version of aeson pandoc was compiled with. To ensure stability, we switched to using manually written ToJSON and FromJSON instances, and encoding the API version. Note: pandoc filter libraries will need to be revised to handle the format change. Here is a summary of the essential changes:
    - The toplevel JSON format is now {"pandoc-api-version" : [MAJ, MIN, REV], "meta" : META, "blocks": BLOCKS} instead of [{"unMeta": META}, [BLOCKS]]. Decoding fails if the major and minor version numbers don't match.
    - Leaf nodes no longer have an empty array for their "c" value. Thus, for example, a Space is encoded as {"t":"Space"} rather than {"t":"Space","c":[]} as before.
  - Removed tests/Tests/Arbitrary.hs and added a Text.Pandoc.Arbitrary module to pandoc-types (Jesse Rosenthal). This makes it easier to use QuickCheck with pandoc types outside of pandoc itself.
  - Add bracketed_spans Markdown extension, enabled by default in pandoc markdown. This allows you to create a native span using this syntax: [Here is my span]{#id .class key="val"}.
  - Added angle_brackets_escapable Markdown extension (#2846). This is needed because github flavored Markdown has a slightly different set of escapable symbols than original Markdown; it includes angle brackets.
  - Export Text.Pandoc.Error in Text.Pandoc [API change].
  - Print highlighting-kate version in --version.
  - Text.Pandoc.Options:
    - Extension has new constructors Ext_brackted_spans and Ext_angle_brackets_escapable [API change].
    - Added ReferenceLocation type [API change] (Jesse Rosenthal).
    - Added writerReferenceLocation field to WriterOptions (Jesse Rosenthal).
  - --filter: we now check $DATADIR/filters for filters before looking in the path (#3127, Jesse Rosenthal, thanks to Jakob Voß for the idea). Filters placed in this directory need not be executable; if the extension is .hs, .php, .pl, .js, or .rb, pandoc will run the right interpreter.
  - For --webtex, replace deprecated Google Chart API by CodeCogs as default (Kolen Cheung).
  - Removed raw_tex extension from markdown_mmd defaults (Kolen Cheung).
  - Execute .js filters with node (Jakob Voß).
  - Textile reader:
    - Support bc.. extended code blocks (#3037). Also, remove trailing newline in code blocks (consistently with Markdown reader).
    - Improve table parsing. We now handle cell and row attributes, mostly by skipping them. However, alignments are now handled properly. Since in pandoc alignment is per-column, not per-cell, we try to devine column alignments from cell alignments. Table captions are also now parsed, and textile indicators for thead and tfoot no longer cause parse failure. (However, a row designated as tfoot will just be a regular row in pandoc.)
    - Improve definition list parsing. We now allow multiple terms (which we concatenate with linebreaks). An exponential parsing bug (#3020) is also fixed.
    - Disallow empty URL in explicit link (#3036).
  - RST reader:
    - Use Div instead of BlockQuote for admonitions (#3031). The Div has class admonition and (if relevant) one of the following: attention, caution, danger, error, hint, important, note, tip, warning. Note: This will change the rendering of some RST documents! The word ("Warning", "Attention", etc.) is no longer added; that must be done with CSS or a filter.
    - A Div is now used for sidebar as well.
    - Skip whitespace before note (Jesse Rosenthal, #3163). RST requires a space before a footnote marker. We discard those spaces so that footnotes will be adjacent to the text that comes before it. This is in line with what rst2latex does.
    - Allow empty lines when parsing line blocks (Albert Krewinkel).
  - Markdown reader:
    - Allow empty lines when parsing line blocks (Albert Krewinkel).
    - Allow attributes on autolinks (#3183, Daniele D'Orazio).
  - LaTeX reader:
    - More robust parsing of unknown environments (#3026). We no longer fail on things like ^ inside options for tikz.
    - Be more forgiving of non-standard characters, e.g. ^ outside of math. Some custom environments give these a meaning, so we should try not to fall over when we encounter them.
    - Drop duplicate * in bibtexKeyChars (Albert Krewinkel)
  - MediaWiki reader:
    - Fix for unquoted attribute values in mediawiki tables (#3053). Previously an unquoted attribute value in a table row could cause parsing problems.
    - Improved treatment of verbatim constructions (#3055). Previously these yielded strings of alternating Code and Space elements; we now incorporate the spaces into the Code. Emphasis etc. is still possible inside these.
    - Properly interpret XML tags in pre environments (#3042). They are meant to be interpreted as literal text.
  - EPUB reader: don't add root path to data: URIs (#3150). Thanks to @lep for the bug report and patch.
  - Org reader (Albert Krewinkel):
    - Preserve indentation of verse lines (#3064). Leading spaces in verse lines are converted to non-breaking spaces, so indentation is preserved.
    - Ensure image sources are proper links. Image sources as those in plain images, image links, or figures, must be proper URIs or relative file paths to be recognized as images. This restriction is now enforced for all image sources. This also fixes the reader's usage of uncleaned image sources, leading to file: prefixes not being deleted from figure images. Thanks to @bsag for noticing this bug.
    - Trim verse lines properly (Albert Krewinkel).
    - Extract meta parsing code to module. Parsing of meta-data is well separable from other block parsing tasks. Moving into new module to get small files and clearly arranged code.
    - Read markup only for special meta keys. Most meta-keys should be read as normal string values, only a few are interpreted as marked-up text.
    - Allow multiple, comma-separated authors. Multiple authors can be specified in the #+AUTHOR meta line if they are given as a comma-separated list.
    - Give precedence to later meta lines. The last meta-line of any given type is the significant line. Previously the value of the first line was kept, even if more lines of the same type were encountered.
    - Read LaTeX_header as header-includes. LaTeX-specific header commands can be defined in #+LaTeX_header lines. They are parsed as format-specific inlines to ensure that they will only show up in LaTeX output.
    - Set documentclass meta from LaTeX_class.
    - Set classoption meta from LaTeX_class_options.
    - Read HTML_head as header-includes. HTML-specific head content can be defined in #+HTML_head lines. They are parsed as format-specific inlines to ensure that they will only show up in HTML output.
    - Respect author export option. The author option controls whether the author should be included in the final markup. Setting #+OPTIONS: author:nil will drop the author from the final meta-data output.
    - Respect email export option. The email option controls whether the email meta-field should be included in the final markup. Setting #+OPTIONS: email:nil will drop the email field from the final meta-data output.
    - Respect creator export option. The creator option controls whether the creator meta-field should be included in the final markup. Setting #+OPTIONS: creator:nil will drop the creator field from the final meta-data output. Org-mode recognizes the special value comment for this field, causing the creator to be included in a comment. This is difficult to translate to Pandoc internals and is hence interpreted the same as other truish values (i.e. the meta field is kept if it's present).
    - Respect unnumbered header property (#3095). Sections the unnumbered property should, as the name implies, be excluded from the automatic numbering of section provided by some output formats. The Pandoc convention for this is to add an "unnumbered" class to the header. The reader treats properties as key-value pairs per default, so a special case is added to translate the above property to a class instead.
    - Allow figure with empty caption (Albert Krewinkel, #3161). A #+CAPTION attribute before an image is enough to turn an image into a figure. This wasn't the case because the parseFromString function, which processes the caption value, would fail on empty values. Adding a newline character to the caption value fixes this.
  - Docx reader:
    - Use XML convenience functions (Jesse Rosenthal). The functions isElem and elemName (defined in Docx/Util.hs) make the code a lot cleaner than the original XML.Light functions, but they had been used inconsistently. This puts them in wherever applicable.
    - Handle anchor spans with content in headers. Previously, we would only be able to figure out internal links to a header in a docx if the anchor span was empty. We change that to read the inlines out of the first anchor span in a header.
    - Let headers use existing id. Previously we always generated an id for headers (since they wouldn't bring one from Docx). Now we let it use an existing one if possible. This should allow us to recurs through anchor spans.
    - Use all anchor spans for header ids. Previously we only used the first anchor span to affect header ids. This allows us to use all the anchor spans in a header, whether they're nested or not (#3088).
    - Test for nested anchor spans in header. This ensures that anchor spans in header with content (or with other anchor spans inside) will resolve to links to a header id properly.
  - ODT reader (Hubert Plociniczak)
    - Include list's starting value. Previously the starting value of the lists' items has been hardcoded to 1. In reality ODT's list style definition can provide a new starting value in one of its attributes.
    - Infer caption from the text following the image. Frame can contain other frames with the text boxes.
    - Add fig: to title for Image with a caption (as expected by pandoc's writers).
    - Basic support for images in ODT documents.
    - Don't duplicate text for anchors (#3143). When creating an anchor element we were adding its representation as well as the original content, leading to text duplication.
  - DocBook writer:
    - Include an anchor element when a div or span has an id (#3102). Note that DocBook does not have a class attribute, but at least this provides an anchor for internal links.
  - LaTeX writer:
    - Don't use * for unnumbered paragraph, subparagraph. The starred variants don't exist. This helps with part of #3058...it gets rid of the spurious *s. But we still have numbers on the 4th and 5th level headers.
    - Properly escape backticks in verbatim (#3121, Jesse Rosenthal). Otherwise they can cause unintended ligatures like ?`.
    - Handle NARRAOW NO-BREAK SPACE into LaTeX (Vaclav Zeman) as \,.
    - Don't include [htbp] placement for figures (#3103, Václav Haisman). This allows figure placement defaults to be changed by the user in the template.
  - TEI writer: remove heuristic to detect book template (Albert Krewinkel). TEI doesn't have <book> elements but only generic <divN> division elements. Checking the template for a trailing </book> is nonsensical.
  - MediaWiki writer: transform filename with underscores in images (#3052). foo bar.jpg becomes foo_bar.jpg. This was already done for internal links, but it also needs to happen for images.
  - ICML writer: replace partial function (!!) in table handling (#3175, Mauro Bieg).
  - Man writer: allow section numbers that are not a single digit (#3089).
  - AsciiDoc writer: avoid unnecessary use of "unconstrained" emphasis (#3068). In AsciiDoc, you must use a special form of emphasis (double __) for intraword emphasis. Pandoc was previously using this more than necessary.
  - EPUB writer: use stringify instead of plain writer for metadata (#3066). This means that underscores won't be used for emphasis, or CAPS for bold. The metadata fields will just have unadorned text.
  - Docx Writer:
    - Implement user-defined styles (Jesse Rosenthal). Divs and Spans with a custom-style key in the attributes will apply the corresponding key to the contained blocks or inlines.
    - Add ReaderT env to the docx writer (Jesse Rosenthal).
    - Clean up and streamline RTL behavior (Jesse Rosenthal, #3140). You can set dir: rtl in YAML metadata, or use -M dir=rtl on the command line. For finer-grained control, you can set the dir attribute in Div or Span elements.
  - Org writer (Albert Krewinkel):
    - Remove blank line after figure caption. Org-mode only treats an image as a figure if it is directly preceded by a caption.
    - Ensure blank line after figure. An Org-mode figure should be surrounded by blank lines. The figure would be recognized regardless, but images in the following line would unintentionally be treated as figures as well.
    - Ensure link targets are paths or URLs. Org-mode treats links as document internal searches unless the link target looks like a URL or file path, either relative or absolute. This change ensures that this is always the case.
    - Translate language identifiers. Pandoc and Org-mode use different programming language identifiers. An additional translation between those identifiers is added to avoid unexpected behavior. This fixes a problem where language specific source code would sometimes be output as example code.
    - Drop space before footnote markers (Albert Krewinkel, #3162). The writer no longer adds an extra space before footnote markers.
  - Markdown writer:
    - Don't emit HTML for tables unless raw_html extension is set (#3154). Emit [TABLE] if no suitable table formats are enabled and raw HTML is disabled.
    - Check for the raw_html extension before emitting a raw HTML block.
    - Abstract out note/ref function (Jesse Rosenthal).
    - Add ReaderT monad for environment variables (Jesse Rosenthal).
  - HTML, EPUB, slidy, revealjs templates: Use <p> instead of <h1> for subtitle, author, date (#3119). Note that, as a result of this change, authors may need to update CSS.
  - revealjs template: Added notes-server option (jgm/pandoc-templates#212, Yoan Blanc).
  - Beamer template:
    - Restore whitespace between paragraphs. This was a regression in the last release (jgm/pandoc-templates#207).
    - Added themeoptions variable (Carsten Gips).
    - Added beamerarticle variable. This causes the beamerarticle package to be loaded in beamer, to produce an article from beamer slides. (Carsten Gips)
    - Added support for fontfamilies structured variable (Artem Klevtsov).
    - Added hypersetup options (Jake Zimmerman).
  - LaTeX template:
    - Added dummy definition for \institute. This isn't a standard command, and we want to avoid a crash when institute is used with the default template.
    - Define default figure placement (Václav Haisman), since pandoc no longer includes [htbp] for figures. Users with custom templates will want to add this. See #3103.
    - Use footnote package to fix notes in tables (jgm/pandoc-templates#208, Václav Haisman).
  - Moved template compiling/rendering code to a separate library. doctemplates. This allows the pandoc templating system to be used independently.
  - Text.Pandoc.Error: Fix out of index error in handleError (Matthew Pickering). The fix is to not try to show the exact line when it would cause an out-of-bounds error as a result of included files.
  - Text.Pandoc.Shared: Add linesToBlock function (Albert Krewinkel).
  - Text.Pandoc.Parsing.emailAddress: tighten up parsing of email addresses. Technically **@user is a valid email address, but if we allow things like this, we get bad results in markdown flavors that autolink raw email addresses (see #2940). So we exclude a few valid email addresses in order to avoid these more common bad cases.
  - Text.Pandoc.PDF: Don't crash with nonexistent image (#3100). Instead, emit the alt text, emphasized. This accords with what the ODT writer currently does. The user will still get a warning about a nonexistent image.
  - Fix example in API documentation (#3176, Thomas Weißschuh).
  - Tell where to get tarball in INSTALL (#3062).
  - Rename README to MANUAL.txt and add GitHub-friendly README.md (Albert Krewinkel, Kolen Cheung).
  - Replace COPYING with Markdown version COPYING.md from GNU (Kolen Cheung).
  - MANUAL.txt:
    - Put note on structured vars in separate paragraph (#2148, Albert Krewinkel). Make it clearer that structured author variables require a custom template
    - Note that --katex works best with html5 (#3077).
    - Fix the LaTeX and EPUB links in manual (Morton Fox).
    - Document biblio-title variable.
  - Improve spacing of footnotes in --help output (Waldir Pimenta).
  - Update KaTeX to v0.6.0 (Kolen Cheung).
  - Allow latest dependencies.
  - Use texmath 0.8.6.6 (#3040).
  - Allow http-client 0.4.30, which is the version in stackage lts. Previously we required 0.5. Remove CPP conditionals for earlier versions.
  - Remove support for GHC < 7.8 (Jesse Rosenthal).
    - Remove Compat.Monoid.
    - Remove an inline monad compatibility macro.
    - Remove Text.Pandoc.Compat.Except.
    - Remove directory compat.
    - Change constraint on mtl.
    - Remove unnecessary CPP condition in UTF8.
    - Bump base lower bound to 4.7.
    - Remove 7.6 build from .travis.yaml.
    - Bump supported ghc version in CONTRIBUTING.md.
    - Add note about GHC version support to INSTALL.
    - Remove GHC 7.6 from list of tested versions (Albert Krewinkel).
    - Remove TagSoup compat.
    - Add EOL note to time compat module. Because time 1.4 is a boot library for GHC 7.8, we will support the compatibility module as long as we support 7.8. But we should be clear about when we will no longer need it.
    - Remove blaze-html CPP conditional.
    - Remove unnecessary CPP in custom Prelude.
  pandoc 1.17.2 (2016-07-17)
  - Added Zim Wiki writer, template and tests. zimwiki is now a valid output format. (Alex Ivkin)
  - Changed email-obfuscation default to no obfuscation (#2988).
    - writerEmailObfuscation in defaultWriterOptions is now NoObfuscation.
    - the default for the command-line --email-obfuscation option is now none.
  - Docbook writer: Declare xlink namespace in Docbook5 output (Ivo Clarysse).
  - Org writer:
    - Support arbitrary raw inlines (Albert Krewinkel). Org mode allows arbitrary raw inlines ("export snippets" in Emacs parlance) to be included as @@format:raw foreign format text@@.
    - Improve Div handling (Albert Krewinkel). Div blocks handling is changed to make the output look more like idiomatic org mode:
      
      Div-wrapped content is output as-is if the div's attribute is the null attribute.
      
      Div containers with an id but neither classes nor key-value pairs are unwrapped and the id is added as an anchor.
      
      Divs with classes associated with greater block elements are wrapped in a #+BEGIN...#+END block.
      
      The old behavior for Divs with more complex attributes is kept.
  - HTML writer: Better support for raw LaTeX environments (#2758). Previously we just passed all raw TeX through when MathJax was used for HTML math. This passed through too much. With this patch, only raw LaTeX environments that MathJax can handle get passed through. This patch also causes raw LaTeX environments to be treated as math, when possible, with MathML and WebTeX output.
  - Markdown writer: use raw HTML for simple, pipe tables with linebreaks (#2993). Markdown line breaks involve a newline, and simple and pipe tables can't contain one.
  - Make --webtex work with the Markdown writer (#1177). This is a convenient option for people using websites whose Markdown flavors don't provide for math.
  - Docx writer:
    - Set paragraph to FirstPara after display math (Jesse Rosenthal). We treat display math like block quotes, and apply FirstParagraph style to paragraphs that follow them. These can be styled as the user wishes. (But, when the user is using indentation, this allows for paragraphs to continue after display math without indentation.)
    - Use actual creation time as doc prop (Jesse Rosenthal). Previously, we had used the user-supplied date, if available, for Word's document creation metadata. This could lead to weird results, as in cases where the user post-dates a document (so the modification might be prior to the creation). Here we use the actual computer time to set the document creation.
  - LaTeX writer:
    - Don't URI-escape image source (#2825). Usually this is a local file, and replacing spaces with %20 ruins things.
    - Allow 'standout' as a beamer frame option (#3007). ## Slide title {.standout}.
  - RST reader: Fixed links with no explicit link text. The link `<foo>`_ should have foo as both its link text and its URL. See RST spec at http://docutils.sourceforge.net/docs/ref/rst/restructuredtext.html#embedded-uris-and-aliases Closes Debian #828167 -- reported by Christian Heller.
  - Textile reader:
    - Fixed attributes (#2984). Attributes can't be followed by a space. So, _(class)emph_ but _(noclass) emph_.
    - Fixed exponential parsing bug (#3020).
    - Fix overly aggressive interpretation as images (#2998). Spaces are not allowed in the image URL in textile.
  - LaTeX reader:
    - Fix \cite so it is a NormalCitation not AuthorInText.
    - Strip off double quotes around image source if present (#2825). Avoids interpreting these as part of the literal filename.
  - Org reader:
    - Add semicolon to list of special chars (Albert Krewinkel) Semicolons are used as special characters in citations syntax. This ensures the correct parsing of Pandoc-style citations: [prefix; @key; suffix]. Previously, parsing would have failed unless there was a space or other special character as the last character.
    - Add support for "Berkeley-style" cites (Albert Krewinkel, #1978). A specification for an official Org-mode citation syntax was drafted by Richard Lawrence and enhanced with the help of others on the orgmode mailing list. Basic support for this citation style is added to the reader.
    - Support arbitrary raw inlines (Albert Krewinkel). Org mode allows arbitrary raw inlines ("export snippets" in Emacs parlance) to be included as @@format:raw foreign format text@@.
    - Remove partial functions (Albert Krewinkel, #2991). Partial functions like head lead to avoidable errors and should be avoided. They are replaced with total functions.
    - Support figure labels (Albert Krewinkel, #2496, #2999). Figure labels given as #+LABEL: thelabel are used as the ID of the respective image. This allows e.g. the LaTeX to add proper \label markup.
    - Improve tag and properties type safety (Albert Krewinkel). Specific newtype definitions are used to replace stringly typing of tags and properties. Type safety is increased while readability is improved.
    - Parse as headlines, convert to blocks (Albert Krewinkel). Emacs org-mode is based on outline-mode, which treats documents as trees with headlines are nodes. The reader is refactored to parse into a similar tree structure. This simplifies transformations acting on document (sub-)trees.
    - Refactor comment tree handling (Albert Krewinkel). Comment trees were handled after parsing, as pattern matching on lists is easier than matching on sequences. The new method of reading documents as trees allows for more elegant subtree removal.
    - Support archived trees export options (Albert Krewinkel). Handling of archived trees can be modified using the arch option. Archived trees are either dropped, exported completely, or collapsed to include just the header when the arch option is nil, non-nil, or headline, respectively.
    - Put export setting parser into module (Albert Krewinkel). Export option parsing is distinct enough from general block parsing to justify putting it into a separate module.
    - Support headline levels export setting (Albert Krewinkel). The depths of headlines can be modified using the H option. Deeper headlines will be converted to lists.
    - Replace ugly code with view pattern (Albert Krewinkel). Some less-than-smart code required a pragma switching of overlapping pattern warnings in order to compile seamlessly. Using view patterns makes the code easier to read and also doesn't require overlapping pattern checks to be disabled.
    - Fix parsing of verbatim inlines (Albert Krewinkel, #3016). Org rules for allowed characters before or after markup chars were not checked for verbatim text. This resultet in wrong parsing outcomes of if the verbatim text contained e.g. space enclosed markup characters as part of the text (=is_substr = True=). Forcing the parser to update the positions of allowed/forbidden markup border characters fixes this.
  - LaTeX template: fix for obscure hyperref/xelatex issue. Here's a minimal case:
```
\documentclass[]{article}
\usepackage{hyperref}
\begin{document}
\section{\%á}
\end{document}
```
    Without this change, this fails on the second invocation of xelatex. This affects inputs this like # %á with pdf output via xelatex.
  - trypandoc: call results 'html' instead of 'result'. This is for better compatibility with babelmark2.
  - Document MultiMarkdown as input/output format (Albert Krewinkel, #2973). MultiMarkdown was only mentioned as a supported Markdown dialect but not as a possible input or output format. A brief mention is added everywhere the other supported markdown dialects are mentioned.
  - Document Org mode as a format containing raw HTML (Albert Krewinkel) Raw HTML is kept when the output format is Emacs Org mode.
  - Implement RawInline and RawBlock in sample lua custom writer (#2985).
  - Text.Pandoc.Shared:
    - Introduce blocksToInlines function (Jesse Rosenthal). This is a lossy function for converting [Block] -> [Inline]. Its main use, at the moment, is for docx comments, which can contain arbitrary blocks (except for footnotes), but which will be converted to spans. This is, at the moment, pretty useless for everything but the basic Para and Plain comments. It can be improved, but the docx reader should probably emit a warning if the comment contains more than this.
    - Add BlockQuote to blocksToInlines (Jesse Rosenthal).
    - Add further formats for normalizeDate (Jesse Rosenthal). We want to avoid illegal dates -- in particular years with greater than four digits. We attempt to parse series of digits first as %Y%m%d, then %Y%m, and finally %Y.
    - normalizeDate should reject illegal years (Jesse Rosenthal). We only allow years between 1601 and 9999, inclusive. The ISO 8601 actually says that years are supposed to start with 1583, but MS Word only allows 1601-9999. This should stop corrupted word files if the date is out of that range, or is parsed incorrectly.
    - Improve year sanity check in normalizeDate (Jesse Rosenthal). Previously we parsed a list of dates, took the first one, and then tested its year range. That meant that if the first one failed, we returned nothing, regardless of what the others did. Now we test for sanity before running msum over the list of Maybe values. Anything failing the test will be Nothing, so will not be a candidate.
  - Docx reader:
    - Add simple comment functionality. (Jesse Rosenthal). This adds simple track-changes comment parsing to the docx reader. It is turned on with --track-changes=all. All comments are converted to inlines, which can list some information. In the future a warning will be added for comments with formatting that seems like it will be excessively denatured. Note that comments can extend across blocks. For that reason there are two spans: comment-start and comment-end. comment-start will contain the comment. comment-end will always be empty. The two will be associated by a numeric id.
    - Enable warnings in top-level reader (Jesse Rosenthal). Previously we had only allowed for warnings in the parser. Now we allow for them in the Docx.hs as well. The warnings are simply concatenated.
    - Add warning for advanced comment formatting. (Jesse Rosenthal). We can't guarantee we'll convert every comment correctly, though we'll do the best we can. This warns if the comment includes something other than Para or Plain.
    - Add tests for warnings. (Jesse Rosenthal).
    - Add tests for comments (Jesse Rosenthal). We test for comments, using all track-changes options. Note that we should only output comments if --track-changes=all. We also test for emitting warnings if there is complicated formatting.
  - README: update to include track-changes comments. (Jesse Rosenthal)
  - Improved Windows installer - don't ignore properties set on command-line. See #2708. Needs testing to see if this resolves the issue. Thanks to @nkalvi.
  - Process markdown extensions on command line in L->R order (#2995). Previously they were processed, very unintuitively, in R->L order, so that markdown-tex_math_dollars+tex_math_dollars had tex_math_dollars disabled.
  - Added secnumdepth variable to LaTeX template (#2920).
  - Include table of contents in README.html in Windows package.
  - Writers: treat SoftBreak as space for stripping (Jesse Rosenthal) In Writers.Shared, we strip leading and trailing spaces for display math. Since SoftBreak's are treated as spaces, we should strip those too.
  - beamer, latex templates: pass biblatexoptions directly in package load. This allows runtime optinos to be used. Fixes jgm/pandoc-citeproc#201
  - CPP workaround for deprecation of parseUrl in http-client.
  - Removed some redundant class constraints.
  - make_oxs_package.sh - use OSX env variable.
  - Added winpkg target to Makefile. This downloads the windows package from appveyor and signs it using the key.
  - Document Org mode as a format containing raw TeX (Albert Krewinkel). Raw TeX is kept verbatim when the output format is Emacs Org mode.
  - Support math with haddock-library >= 1.4.
  - Removed -rtsopts from library stanza. It has no effect, and Hackage wouldn't accept the package.
  - Update library dependency versions.
  pandoc 1.17.1 (2016-06-04)
  - New output format: docbook5 (Ivo Clarysse).
  - Text.Pandoc.Options: Add writerDocBook5 to WriterOptions (API change).
  - Org writer:
    - Add :PROPERTIES: drawer support (Albert Krewinkel, #1962). This allows header attributes to be added to org documents in the form of :PROPERTIES: drawers. All available attributes are stored as key/value pairs. This reflects the way the org reader handles :PROPERTIES: blocks.
    - Add drawer capability (Carlos Sosa). For the implementation of the Drawer element in the Org Writer, we make use of a generic Block container with attributes. The presence of a drawer class defines that the Div constructor is a drawer. The first class defines the drawer name to use. The key-value list in the attributes defines the keys to add inside the Drawer. Lastly, the list of Block elements contains miscellaneous blocks elements to add inside of the Drawer.
    - Use CUSTOM_ID in properties (Albert Krewinkel). The ID property is reserved for internal use by Org-mode and should not be used. The CUSTOM_ID property is to be used instead, it is converted to the ID property for certain export format.
  - LaTeX writer:
    - Ignore --incremental unless output format is beamer (#2843).
    - Fix polyglossia to babel env mapping (Mauro Bieg, #2728). Allow for optional argument in square brackets.
    - Recognize la-x-classic as Classical Latin (Andrew Dunning). This allows one to access the hyphenation patterns in CTAN's hyph-utf8.
    - Add missing languages from hyph-utf8 (Andrew Dunning).
    - Improve use of \strut with \minipage inside tables (Jose Luis Duran). This improves spacing in multiline tables.
    - Use {} around options containing special chars (#2892).
    - Avoid lazy foldl.
    - Don't escape underscore in labels (#2921). Previously they were escaped as ux5f.
    - brazilian -> brazil for polyglossia (#2953).
  - HTML writer: Ensure mathjax link is added when math appears in footnote (#2881). Previously if a document only had math in a footnote, the MathJax link would not be added.
  - EPUB writer: set navpage variable on nav page. This allows templates to treat it differently.
  - DocBook writer:
    - Use docbook5 if writerDocbook5 is set (Ivo Clarysse).
    - Properly handle ulink/link (Ivo Clarysse).
  - EPUB reader:
    - Unescape URIs in spine (#2924).
    - EPUB reader: normalise link id (Mauro Bieg).
  - Docx Reader:
    - Parse moveTo and moveFrom (Jesse Rosenthal). moveTo and moveFrom are track-changes tags that are used when a block of text is moved in the document. We now recognize these tags and treat them the same as insert and delete, respectively. So, --track-changes=accept will show the moved version, while --track-changes=reject will show the original version.
    - Tests for track-changes moving (Jesse Rosenthal).
  - ODT, EPUB, Docx readers: throw PandocError on unzip failure (Jesse Rosenthal) Previously, readDocx, readEPUB, and readOdt would error out if zip-archive failed. We change the archive extraction step from toArchive to toArchiveOrFail, which returns an Either value.
  - Markdown, HTML readers: be more forgiving about unescaped & in HTML (#2410). We are now more forgiving about parsing invalid HTML with unescaped & as raw HTML. (Previously any unescaped & would cause pandoc not to recognize the string as raw HTML.)
  - Markdown reader:
    - Fix pandoc title blocks with lines ending in 2 spaces (#2799).
    - Added -s to markdown-reader-more test.
  - HTML reader: fixed bug in pClose. This caused exponential parsing behavior in documnets with unclosed tags in dl, dd, dt.
  - MediaWiki reader: Allow spaces before ! in MediaWiki table header (roblabla).
  - RST reader: Support :class: option for code block in RST reader (Sidharth Kapur).
  - Org reader (all Albert Krewinkel, except where noted otherwise):
    - Stop padding short table rows. Emacs Org-mode doesn't add any padding to table rows. The first row (header or first body row) is used to determine the column count, no other magic is performed.
    - Refactor rows-to-table conversion. This refactors the codes conversing a list table lines to an org table ADT. The old code was simplified and is now slightly less ugly.
    - Fix handling of empty table cells, rows (Albert Krewinkel, #2616). This fixes Org mode parsing of some corner cases regarding empty cells and rows. Empty cells weren't parsed correctly, e.g. ||| should be two empty cells, but would be parsed as a single cell containing a pipe character. Empty rows where parsed as alignment rows and dropped from the output.
    - Fix spacing after LaTeX-style symbols. The org-reader was dropping space after unescaped LaTeX-style symbol commands: \ForAll \Auml resulted in ∀Ä but should give ∀ Ä instead. This seems to be because the LaTeX-reader treats the command-terminating space as part of the command. Dropping the trailing space from the symbol-command fixes this issue.
    - Print empty table rows. Empty table rows should not be dropped from the output, so row-height is always set to be at least 1.
    - Move parser state into separate module. The org reader code has become large and confusing. Extracting smaller parts into submodules should help to clean things up.
    - Add support for sub/superscript export options. Org-mode allows to specify export settings via #+OPTIONS lines. Disabling simple sub- and superscripts is one of these export options, this options is now supported.
    - Support special strings export option Parsing of special strings (like ... as ellipsis or -- as en dash) can be toggled using the - option.
    - Support emphasized text export option. Parsing of emphasized text can be toggled using the * option. This influences parsing of text marked as emphasized, strong, strikeout, and underline. Parsing of inline math, code, and verbatim text is not affected by this option.
    - Support smart quotes export option. Reading of smart quotes can be toggled using the ' option.
    - Parse but ignore export options. All known export options are parsed but ignored.
    - Refactor block attribute handling. A parser state attribute was used to keep track of block attributes defined in meta-lines. Global state is undesirable, so block attributes are no longer saved as part of the parser state. Old functions and the respective part of the parser state are removed.
    - Use custom anyLine. Additional state changes need to be made after a newline is parsed, otherwise markup may not be recognized correctly. This fixes a bug where markup after certain block-types would not be recognized.
    - Add support for ATTR_HTML attributes (#1906). Arbitrary key-value pairs can be added to some block types using a #+ATTR_HTML line before the block. Emacs Org-mode only includes these when exporting to HTML, but since we cannot make this distinction here, the attributes are always added. The functionality is now supported for figures.
    - Add :PROPERTIES: drawer support (#1877). Headers can have optional :PROPERTIES: drawers associated with them. These drawers contain key/value pairs like the header's id. The reader adds all listed pairs to the header's attributes; id and class attributes are handled specially to match the way Attr are defined. This also changes behavior of how drawers of unknown type are handled. Instead of including all unknown drawers, those are not read/exported, thereby matching current Emacs behavior.
    - Use CUSTOM_ID in properties. See above on Org writer changes.
    - Respect drawer export setting. The d export option can be used to control which drawers are exported and which are discarded. Basic support for this option is added here.
    - Ignore leading space in org code blocks (Emanuel Evans, #2862). Also fix up tab handling for leading whitespace in code blocks.
    - Support new syntax for export blocks. Org-mode version 9 uses a new syntax for export blocks. Instead of #+BEGIN_<FORMAT>, where <FORMAT> is the format of the block's content, the new format uses #+BEGIN_export <FORMAT> instead. Both types are supported.
    - Refactor BEGIN...END block parsing.
    - Fix handling of whitespace in blocks, allowing content to be indented less then the block header.
    - Support org-ref style citations. The org-ref package is an org-mode extension commonly used to manage citations in org documents. Basic support for the cite:citeKey and [[cite:citeKey][prefix text::suffix text]] syntax is added.
    - Split code into separate modules, making for cleaner code and better decoupling.
  - Added docbook5 template.
  - --mathjax improvements:
    - Use new CommonHTML output for MathJax (updated default MathJax URL, #2858).
    - Change default mathjax setup to use TeX-AMS_CHTML configuration. This is designed for cases where the input is always TeX and maximal conformity with TeX is desired. It seems to be smaller and load faster than what we used before. See #2858.
    - Load the full MathJax config to maximize loading speed (KolenCheung).
  - Bumped upper version bounds to allow use of latest packages and compilation with ghc 8.
  - Require texmath 0.8.6.2. Closes several texmath-related bugs (#2775, #2310, #2310, #2824). This fixes behavior of roots, e.g. \sqrt[3]{x}, and issues with sub/superscript positioning and matrix column alignment in docx.
  - README:
    - Clarified documentation of implicit_header_references (#2904).
    - Improved documentation of --columns option.
  - Added appveyor setup, with artefacts (Jan Schulz).
  - stack.yaml versions: Use proper flags used for texmath, pandoc-citeproc.
  - LaTeX template: support for custom font families (vladipus). Needed for correct polyglossia operation with Cyrillic fonts and perhaps can find some other usages. Example usage in YAML metadata:
```
  fontfamilies:
  - name: \cyrillicfont
    font: Liberation Serif
  - name: \cyrillicfonttt
    options: Scale=MatchLowercase
    font: Liberation
```
  - Create unsigned msi as build artifact in appveyor build.
  - On travis, test with ghc 8.0.1; drop testing for ghc 7.4.1.
  pandoc 1.17.0.3 (2016-03-24)
  - LaTeX writer: Fixed position of label in figures (#2813). Previously the label wasn't in the right place, and \ref wouldn't work properly.
  - Added .tei test files to pandoc.cabal so they'll be included in tarball (#2811).
  - Updated copyright dates.
  pandoc 1.17.0.2 (2016-03-23)
  - Fixed serious regression in htmlInBalanced, which caused newlines to be omitted in some raw HTML blocks in Markdown (#2804).
  pandoc 1.17.0.1 (2016-03-21)
  - File scope is no longer used when there are no input files (i.e., when input comes from stdin). Previously file scope was triggered when the json reader was specified and input came from stdin, and this caused no output to be produced. (Fix due to Jesse Rosenthal; thanks to Fedor Sheremetyev for calling the bug to our attention.)
  - Improved documentation of templates (#2797).
  pandoc 1.17 (2016-03-20)
  - Added --file-scope option (Jesse Rosenthal). By default pandoc operates on multiple files by first concatenating them (around extra line breaks) and then processing the joined file. So it only parses a multi-file document at the document scope. This has the benefit that footnotes and links can be in different files, but for some purposes it is useful to parse the individual files first and then combine their outputs (e.g. when the files use footnotes or links with the same labels). The --file-scope option causes pandoc to parse the files first, and then combine the parsed output, instead of combining before parsing. --file-scope is selected automatically for binary input files (which cannot be concatenated) and for pandoc json.
  - Add TEI Writer (Chris Forster) and tei output format.
  - Added a general ByteStringReader with warnings, used by the docx reader (API change, Jesse Rosenthal).
  - Add readDocxWithWarnings (API change, Jesse Rosenthal).
  - Changed type of Shared.uniqueIdent argument from [String] to Set String. This avoids performance problems in documents with many identically named headers (API change, #2671).
  - Removed tex_math_single_backslash from markdown_github options (#2707).
  - Make language extensions as well as full language names trigger syntax highlighting. For example, py will now work as well as python (jgm/highlighting-kate#83).
  - Added institute variable to latex, beamer templates (Fraser Tweedale, Josef Svenningsson).
  - Docx reader (Jesse Rosenthal):
    - Handle alternate content. Some word functions (especially graphics) give various choices for content so there can be backwards compatibility.
    - Don't turn numbered headers into lists.
    - Docx Reader: Add state to the parser, for warnings
    - Update feature checklist in source code.
    - Get rid of Modifiable typeclass.
    - Add tests for adjacent hyperlinks.
    - Add a "Link" modifier to Reducible. We want to make sure that links have their spaces removed, and are appropriately smushed together (#2689).
  - HTML reader:
    - Fixed behavior of base tag (#2777). If the base path does not end with slash, the last component will be replaced. E.g. base = http://example.com/foo combines with bar.html to give http://example.com/bar.html. If the href begins with a slash, the whole path of the base is replaced. E.g. base = http://example.com/foo/ combines with /bar.html to give http://example.com/bar.html.
    - Rewrote htmlInBalanced. This version avoids an exponential performance problem with <script> tags, and it should be faster in general (#2730).
    - Properly handle an empty cell in a simple table (#2718).
    - Handle multiple <meta> tags with same name. Put them in a list in the metadata so they are all preserved, rather than (as before) throwing out all but one..
  - Markdown reader:
    - Improved pipe table parsing (#2765).
    - Allow + separators in pipe table cells. We already allowed them in the header, but not in the body rows, for some reason. This gives compatibility with org-mode tables.
    - Don't cross line boundary parsing pipe table row. Previously an Emph element could be parsed across the newline at the end of the pipe table row.
    - Use htmlInBalanced for rawVerbatimBlock, for better performance (#2730).
    - Fixed bug with smart quotes around tex math.
  - LaTeX reader:
    - Handle interior $ characters in math (#2743). For example, $$\hbox{$i$}$$.
    - inlineCommand now gobbles an empty {} after any command (#2687). This gives better results when people write e.g. \TeX{} in Markdown.
    - Properly handle LaTeX "math" environment as inline math (#2171).
  - Textile reader: Support >, <, =, <> text alignment attributes. Closes #2674.
  - Org reader (Albert Krewinkel):
    - Prefix even empty figure names with "fig:" (#2643). The convention used by pandoc for figures is to mark them by prefixing the name with fig:. The org reader failed to do this if a figure had no name.
    - Refactor link-target processing (#2684).
  - ConTeXt writer: Fix whitespace at line beginning in line blocks (#2744). Thanks to @c-foster.
  - HTML writer: Don't include alignment attribute for default table columns. Previously these were given "left" alignment. Better to leave off alignment attributes altogether (#2694).
  - Markdown writer: Use hyphens for YAML metadata block bottom line, for better compatibility with other Markdown flavors (Henrik Tramberend).
  - LaTeX writer:
    - Use image identifier to create a label and hypertarget for figures (Mauro Bieg).
    - Avoid double toprule in headerless table with caption (#2742).
    - Clean up options parser (Jesse Rosenthal).
    - Treat memoir template with article option as article, instead of treating all memoir templates as books.
    - Allow more flexible table alignment (Henrik Tramberend, #2665). New default is not to include [c] option (which is the default anyway if no positioning is specified). Now LaTeX emplates can control the overall table alignment in a document by setting the longtable length variables LTleft and LTright. For example, \setlength\LTleft\parindent\setlength\LTright\fill will create left-aligned tables that respect paragraph indentation.
  - Docx writer: Handle image alt text (#2754, Mauro Bieg).
  - Org writer - pass through RawInline with format "org".
  - DokuWiki writer: use $$ for display math.
  - Custom writer: Pass attributes parameter to CaptionedImage (#2697).
  - Make protocol-relative URIs work again (#2737).
  - make_osx_package.sh: Use env variable for developer id certs.
  - Raise tagsoup lower bound to 0.13.7 to fix entity-related problems (#2734).
  - Allow zip-archive 0.3.
  - Allow aeson 0.11.
  pandoc 1.16.0.2 (2016-01-12)
  - Depend on deepseq rather than deepseq-generics (fpco/stackage#1096).
  - Fixed regression in latex smart quote parsing (#2645). In cases where a match was not found for a quote, everything from the open quote to the end of the paragraph was being dropped.
  pandoc 1.16.0.1 (2016-01-10)
  - Fixed regression with --latex-engine (#2618). In 1.16 --latex-engine raises an error if a full path is given.
  - Org reader: Fix function dropping subtrees tagged :noexport (Albert Krewinkel, #2628):
  - Markdown reader: renormalize table column widths if they exceed 100% (#2626).
  - Textile reader: don't allow block HTML tags in inline contexts. The reader previously did allow this, following redcloth, which happily parses
```
Html blocks can be <div>inlined</div> as well.
```
    as
```
<p>Html blocks can be <div>inlined</div> as well.</p>
```
    This is invalid HTML. The above sample now produces;
```
<p>Html blocks can be</p>
<div>
<p>inlined</p>
</div>
<p>as well.</p>
```
  - Improved default template lookup for custom lua scripts (#2625). Previously, if you tried to do pandoc -s -t /path/to/lua/script.lua, pandoc would look for the template in ~/.pandoc/templates/default./path/to/lua/script.lua. With this change it will look in the more reasonable ~/.pandoc/templates/default.script.lua. This makes it possible to store default templates for custom writers.
  - RST, Markdown writers: Fixed rendering of grid tables with blank rows (#2615).
  - LaTeX writer: restore old treatment of Span (#2624). A Span is now rendered with surrounding {}, as it was before 1.16.
  - Entity handling fixes: improved handling of entities like &lang; that require a trailing semicolon. Allow uppercase x in numerical hexadecimal character references, working around a tagsoup bug.
  - stack.yaml - use lts-4.0, but with older aeson to avoid excessive memory use on compile. With aeson 0.10 we were getting an out of memory error on a 2GB Ubuntu 64-bit VM.
  - Improved deb package creation script. Made DPKGVER work. Renamed COMMIT to TREE. You should now be able to do TREE=1.16.0.1 DPKGVER=2 make deb.
  pandoc 1.16 (2016-01-02)
  - Added Attr field to Link and Image (Mauro Bieg, #261, API change).
    - Added syntax for link and image attributes to pandoc's Markdown.
    - Updated readers and writers to use link and image attributes when appropriate.
    - Support image attributes in Docx, Textile, RST readers.
  - Renamed link attribute extensions. The old link_attributes is now mmd_link_attributes, and link_attributes now enables the new pandoc-style link and image attributes (API change). Note: this change could break some existing workflows.
  - Implemented SoftBreak and new --wrap option (#1701, API change). Added threefold wrapping option.
    - Command line option: deprecated --no-wrap, added --wrap=[auto|none|preserve]
    - Added WrapOption, exported from Text.Pandoc.Options
    - Changed type of writerWrapText in WriterOptions from Bool to WrapOption.
    - Modified Text.Pandoc.Shared functions to allow SoftBreak.
    - Supported SoftBreak in readers and writers.
  - Text.Pandoc.Options: Added writerDpi to WriterOptions (API change, Mauro Bieg).
  - Added --dpi command-line option (Mauro Bieg).
  - Rationalized behavior of --no-tex-ligatures and --smart (#2541). This change makes --no-tex-ligatures affect the LaTeX reader as well as the LaTeX and ConTeXt writers. If it is used, the LaTeX reader will parse characters `, ', and - literally, rather than parsing ligatures for quotation marks and dashes. And the LaTeX writer will print unicode quotation mark and dash characters literally, rather than converting them to the standard ASCII ligatures. Note that --smart has no effect on the LaTeX reader. --smart is still the default for all input formats when LaTeX or ConTeXt is the output format, unless --no-tex-ligatures is used.
    
    Some examples to illustrate the logic:
```
% echo "'hi'" | pandoc -t latex
`hi'
% echo "'hi'" | pandoc -t latex --no-tex-ligatures
'hi'
% echo "'hi'" | pandoc -t latex --no-tex-ligatures --smart
‘hi’
% echo "'hi'" | pandoc -f latex --no-tex-ligatures
<p>'hi'</p>
% echo "'hi'" | pandoc -f latex
<p>’hi’</p>
```
  - Removed deprecated options --offline and --html5.
  - Fixed language code for Czech (cs not cz) (#2597).
  - Implemented east_asian_line_breaks extension (#2586). In Text.Pandoc.Options, added Ext_east_asian_line_breaks constructor to Extension (API change). This extension is like ignore_line_breaks, but smarter -- it only ignores line breaks between two East Asian wide characters. This makes it better suited for writing with a mix of East Asian and non-East Asian scripts.
  - Added support for PDF creation via wkhtmltopdf. To use this: pandoc -t html5 -o result.pdf (and add --mathjax if you have math.) Margins can be set using the variables margin-top, margin-bottom, margin-left, margin-right. Other styling can be done through CSS.
  - Fixed cite key parsing regression (jgm/pandoc-citeproc#201). We were capturing final colons as in [@foo: bar]; the citation id was being parsed as @foo:.
  - ICML writer:
    - Fixed image syntax for local files (#2589).
    - Changed type of writeICML (Mauro Bieg). API change: It is now WriterOptions -> Pandoc -> IO String. Also handle new image attributes.
    - Intersperse line breaks instead of appending them to every ParagraphStyleRange (Mauro Bieg, #2501).
    - Add Cite style to citations (Mauro Bieg).
    - Added figure handling (#2590, Mauro Bieg).
    - Better handling of math. Instead of just printing the raw tex, we now try to fake it with unicode characters.
  - HTML writer: Include example class for example lists (#2524).
  - ODT/OpenDocument writer: improved image attributes (Mauro Bieg).
    - Support for percentage widths/heights
    - Use Attr instead of title to get dimensions from ODT walker to writeOpenDocument.
  - AsciiDoc writer:
    - Support anchors in spans and divs with id elements (jgm/pandoc-citeproc#143).
    - Fixed code blocks (#1861).
  - Haddock writer: omit formatting inside links, which isn't supported by Haddock (#2515).
  - MediaWiki writer: Fixed spacing issues in table cells.
    - Start cell on new line unless it's a single Para or Plain (#2606).
    - For single Para or Plain, insert a space after the | to avoid problems when the text begins with a character like - (#2604).
  - Beamer writer: mark frame as fragile when it contains verbatim (#1613).
  - LaTeX writer:
    - Add support for GAP highlighting using listings (Raniere Silva).
    - Consider header-includes content as well as templates when determining whether to use csquotes (Andreas Lööw).
    - Create defaults for geometry using margin-left etc. If geometry has no value, but margin-left, margin-right, margin-top, and/or -margin-bottom are given, a default value for geometry is created from these. Note that these variables already affect PDF production via HTML5 with wkhtmltopdf.
  - ConTeXt writer: set default layout based on margin-left, etc. This sets up \setuplayout based on the variables margin-left, margin-right, margin-bottom, and margin-top, if no layout is given.
  - Docx writer: better handling of PDF images. Previously we tried to get the image size from the image even if an explicit size was specified. Since we still can't get image size for PDFs, this made it impossible to use PDF images in docx. Now we don't try to get the image size when a size is already explicitly specified.
  - Markdown writer: use raw HTML for link/image attributes when the link_attributes extension is unset and raw_html is set (#2554).
  - MediaWiki reader: interpret markup inside <tt>, <code> (#2607).
  - LaTeX reader:
    - Improved smart quote parsing (#2555). This fixes redering of unmatched quotes.
    - Use curly quotes for unmatched ` (#2555).
    - Allow blank space between braced arguments of commands (#2592).
  - Markdown reader:
    - Improved pipe table relative widths. Previously pipe table columns got relative widths (based on the header underscore lines) when the source of one of the rows was greater in width than the column width. This gave bad results in some cases where much of the width of the row was due to nonprinting material (e.g. link URLs). Now pandoc only looks at printable width (the width of a plain string version of the source), which should give better results. Thanks to John Muccigrosso for bringing up the issue.
    - Fixed parsing bug with macros. Previously macro definitions in indented code blocks were being parsed as macro definitions, not code.
  - Textile reader: skip over attribute in image source (#2515). We don't have a place yet for styles or sizes on images, but we can skip the attributes rather than incorrectly taking them to be part of the filename.
  - Docx reader: Handle dummy list items (Jesse Rosenthal). These come up when people create a list item and then delete the bullet. It doesn't refer to any real list item, and we used to ignore it.
  - CommonMark reader/writer rewritten to use latest cmark.
  - Fixed Emoji character definitions (#2523). There were many bugs in the definitions.
  - Text.Pandoc.CSS:
    - Added pickStylesToKVs function to extract multiple properties at once (API change, Mauro Bieg).
    - Parse CSS that doesn't contain the optional semicolon (Mauro Bieg).
  - trypandoc: sort drop-down lists.
  - Beamer template:
    - Made \euro conditional on presence of character. for xelatex and lualatex, as it is for pdflatex (Andrew Dunning).
    - Moved header-includes before setting of title (Thomas Hodgson), to match the LaTeX template (jgm/pandoc-templates#168).
    - Added section-titles variable (defaults to true) to enable/suppress section title pages in beamer slide shows (Thomas Hodgson).
    - Moved beamer themes after fonts, so that themes can change fonts. (Previously the fonts set were being clobbered by lmodern.sty.) (Thomas Hodgson).
  - Beamer/LaTeX template changes (Thomas Hodgson):
    - Added thanks variable
    - Use parskip.sty when indent isn't set (fall back to using setlength as before if parskip.sty isn't available).
    - Use biblio-style with biblatex.
    - Added biblatexoptions variable.
  - LaTeX template changes:
    - Added paper after $papersize$ variable in latex template. Thus you can say papersize: a4 and the latex will contain a4paper. This change may break some existing workflows; if you currently specify a4paper, you'll get a4paperpaper which is meaningless. However, the change seems worth it, as it will make the papersize variable work uniformly across ConTeXt, LaTeX, and html->pdf via wkhtmltopdf.
    - Only pass options to color package if colorlinks is set (Andrew Dunning).
    - Make definition of \euro conditional in xelatex/lualatex, as it is already for pdflatex (Andrew Dunning).
    - Removed setting of subject in PDF metadata. This used to be set to the subtitle, but really the subtitle need not give the subject. Also, subtitle can contain formatting, so we'd need, at least, a plain text version for this.
    - Moved header-includes before setting of \title, \author, etc. This allows these macros to be redefined.
    - Use \subtitle command for subtitle, instead of tacking it on to the title as before. We give a no-op fallback definition if it is not defined. This change should produce much better results in classes that support \subtitle. With the default article class, which does not define \subtitle, subtitles will no longer be printed unless the user defines \subtitle and redefines \maketitle.
    - Moved redefinitions of \paragraph and \subparagraph to before header-includes.
  - Context template:
    - Use simplefonts for font loading (Paolo Rodríguez). This is needed for things to work on ConTeXt stable from TeXLive 2015.
    - Revert use of \setuphead in title block (Andrew Dunning, Rik Kabel).
  - Update LaTeX/ConTeXt link colour usage (Andrew Dunning).
  - Fixed man template so disabling hyphenation actually works. The command needs to come after .TH.
  - Added 'navigation' variable to beamer template (#2543). Valid values are empty (the default), horizontal, vertical, and frame. Note that this changes the default behavior from horizontal to empty. Closes #2543.
  - Added toc to HTML slide format templates (Andrew Dunning), so that --toc creates a contents slide.
  - Added stack.full.yaml to build pandoc-citeproc as well.
  - Allow pipe tables with no body rows (#2556). Previously this raised a runtime error.
  - Shared: Improved fetchItem so that C:/Blah/Blah.jpg isn't treated as URL. The Haskell URI parsing routines will accept "C:" as a scheme, so we rule that out manually. This helps with --self-contained and absolute Windows paths.
  - Define a meta-json variable for all writers (#2019). This contains a JSON version of all the metadata, in the format selected for the writer. So, for example, to get just the YAML metadata, you can run pandoc with the following custom template: $meta-json$ . The intent is to make it easier for static site generators and other tools to get at the metadata.
  - Document limitations of --self-contained (#2553).
  - Improved Citations section of README (#2551). Added information about link-citations and a link to the pandoc-citeproc man page.
  - ImageSize: use safeRead instead of readMaybe, which isn't in base < 4.6.
  - Allow .adoc file extension for AsciiDoc (Andrew Dunning).
  - Improved implicit pandoc-citeproc inclusion. The filter pandoc-citeproc is automatically used when --bibliography is specified on the command line, unless --natbib or --biblatex is used. However, previously this only worked if --bibliography was spelled out in full, and not if --biblio was used.
  - reveal.js: Interpret pauses correctly for all headers (#2530). Previously, when using headers below the slide level, pauses are left uninterpreted into pauses. In my opinion, unexpected behavior but intentional looking at the code.
  - Remove redundant center variable for reveal.js (Andrew Dunning).
  - Parsing: Add extractIdClass, modified type of KeyTable (Mauro Bieg, API change).
  - ImageSize: Added functions for converting between image dimensions (Mauro Bieg).
  - Use lts-3.18 in stack.yaml. This avoids Windows build issues with the HTTP library.
  - Bump version bounds for dependencies.
  pandoc 1.15.2.1 (2015-11-16)
  - Added two missing test files, and stack.yaml, to extra-source-files so they're included in the source tarball.
  - reveal.js template: Fixed parallaxBackground options. parallaxBackgroundHorizontal and parallaxBackgroundVertical need integer values, not strings. (Vaughn Iverson)
  pandoc 1.15.2 (2015-11-15)
  - pandoc my.md -t context -o my.pdf will now create a PDF using ConTeXt rather than LaTeX (#2463).
  - Fixed omitted url(...) in CSS data-uri with --self-contained (#2489).
  - Added emoji Markdown extension, enabled by default in markdown_github (#2523). Added Ext_emoji to Extension in Text.Pandoc.Options (API change).
  - Text.Pandoc.Readers.HTML.parseTags: Fixed over-eager raw HTML inline parsing (#2469). Tightened up the inline HTML parser so it disallows TagWarnings.
  - Derive Generic instances for the types in Text.Pandoc.Options.
  - Org reader:
    - Fix paragraph/list interaction (Albert Krewinkel, #2464). Paragraphs can be followed by lists, even if there is no blank line between the two blocks. However, this should only be true if the paragraph is not within a list, were the preceding block should be parsed as a plain instead of paragraph (to allow for compact lists). Thanks to @rgaiacs for bringing this up.
    - Allow toggling header args (Albert Krewinkel, #2269). Org-mode allows to skip the argument of a code block header argument if it's toggling a value. Argument-less headers are now recognized, avoiding weird parsing errors.
    - Fix markup parsing in headers (Albert Krewinkel, #2504). Markup as the very first item in a header wasn't recognized. This was caused by an incorrect parser state: positions at which inline markup can start need to be marked explicitly by changing the parser state. This wasn't done for headers. The proper function to update the state is now called at the beginning of the header parser, fixing this issue.
    - Fix emphasis rules for smart parsing (Albert Krewinkel, #2513). Smart quotes, ellipses, and dashes should behave like normal quotes, single dashes, and dots with respect to text markup parsing.
    - Require whitespace around definition list markers (#2518). This rule was not checked before, resulting in bugs with footnotes and some link types.
  - Markdown reader:
    - Pipe tables with long lines now get relative cell widths (#2471). If a pipe table contains a line longer than the column width (as set by --columns or 80 by default), relative widths are computed based on the widths of the separator lines relative to the column width. This should solve persistent problems with long pipe tables in LaTeX/PDF output, and give more flexibility for determining relative column widths in other formats, too. For narrower pipe tables, column widths of 0 are used, telling pandoc not to specify widths explicitly in output formats that permit this.
    - Improved parser for mmd_title_block. We now allow blank metadata fields. These were explicitly disallowed before.
    - Citation keys can now contain ://, so URLs and DOIs can be used as citation keys (jgm/pandoc-citeproc#166).
  - Beamer template: fix incompatibility of section slides with natbib. Natbib (and presumably biblatex) bibliography commands create their own section. Since these are in frame environments, we have an incompatibility with the \AtBeginSection macro which creates a special frame when a new section occurs. (We can't have a frame inside another frame.) This change disables \AtBeginSection inside bibliography slides. Thinks to Yihui Xie for bringing the problem to my attention. This supersedes #145. See discussion there.
  - Textile reader: don't do smart punctuation unless explicitly asked (#2480). Note that although smart punctuation is part of the textile spec, it's not always wanted when converting from textile to, say, Markdown. So it seems better to make this an option.
  - LaTeX reader: Handle comment environment (Arata Mizuki). The comment environment is handled in a similar way to the verbatim environment, except that its content is discarded.
  - Docx reader: Follow relationships correctly in foot/endnotes (#2258, Jesse Rosenthal). This fixes a problem with links in notes.
  - LaTeX and ConTeXt writers: support lang attribute on divs and spans (mb21). For LaTeX, also collect lang and dir attributes on spans and divs to set the lang, otherlangs and dir variables if they aren’t set already. See #895.
  - LaTeX writer:
    - Use proper command for \textarabic (mb21).
    - Added de-CH-1901, fixed el-polyton in toPloyglossia (Nick Bart).
    - Use \hypertarget and \hyperlink for links. This works correctly to link to Div or Span elements. We now don't bother defining \label for Div or Span elements. Closes jgm/pandoc-citeproc#174.
    - Avoid footnotes in list of figures (#1506).
    - Properly handle footnotes in captions (#1506).
    - Add \protect to \hyperlink (#2490). Thanks to Hadrien Mary.
    - Set colorlinks if linkcolor, urlcolor, citecolor, or toccolor is set (#2508).
  - Textile writer: support start number in ordered lists (#2465).
  - OpenDocument writer: Allow customization of opendocument automatic styles. Automatic styles can now be inserted in the template, which now provides the enclosing <office:automatic-styles> tags (#2520).
  - Docx writer: insert space between footnote reference and note (#2527). This matches Word's default behavior.
  - EPUB writer: don't download linked media when data-external attribute set (#2473). By default pandoc downloads all linked media and includes it in the EPUB container. This can be disabled by setting data-external on the tags linking to media that should not be downloaded. Example:
```
<audio controls="1">
 <source src="http://www.sixbarsjail.it/tmp/bach_toccata.mp3"
 type="audio/mpeg"></source>
</audio>
```
  - HTML writer: use width on whole table if col widths sum to < 100%. Otherwise some browsers display the table with the columns separated far apart.
  - AsciiDoc template: Fix author and date; add keywords, abstract (Andrew Dunning).
  - HTML-based templates (Andrew Dunning):
    - Use en dash instead of hyphen between title prefix and title.
    - Add keywords to metadata.
    - Add lang, dir, quotes where missing.
    - Always make author and date display conditional.
    - Updated dzslides template from source.
  - Man template: make "generated by" comment conditional.
  - LaTeX, Beamer templates:
    - Add babel-otherlangs for language divs/spans; babel-newcommands, filled by commands that make babel understand the polyglossia-style language directives (mb21, #137).
    - Improved formatting of conditionals; $for$ is always provided to allow multiple options (Andrew Dunning, #141).
    - Use Ligatures=TeX rather than Mapping=tex-text with fontspec to improve support for LuaTeX (Andrew Dunning, #135).
    - Revise hyperref usage (Andrew Dunning, #139, #141):
      
      use same options for all LaTeX engines;
      
      add subtitle and keywords to PDF metadata;
      
      do not override hyperref link coloring without user input, effectively making the hidelinks option the default (removed as a separate variable);
      
      link colors can be enabled (using a slightly darker version of the old defaults) using a new colorlinks variable, automatically used by the LaTeX writer when custom colors are specified;
      
      pdfborder={0 0 0} is automatically set by hyperref with colorlinks, and is only applied if colorlinks is disabled.
  - ConTeXt template (Andrew Dunning):
    - New variables for controlling styles: linkstyle, linkcolor, linkcontrastcolor, layout, pagenumbering, whitespace, indenting, interlinespace, headertext, footertext, mainfont, sansfont, monofont, mathfont, fontsize.
    - Default template no longer supports MkII.
    - Improve writing of title block (suppressing numbering of first page).
    - Add title subtitle, author, date, keywords to PDF metadata.
    - Support subtitle, abstract.
    - Support list of figures (lof), list of tables (lot).
    - Disable link styling by default.
    - Define styles for all section types.
    - Enable microtype.
    - Improved formatting of conditionals.
  - Beamer template: added code to prevent slide breaks inside paragraphs (#2422, thanks to Nick Bart). This will matter, in practice, only when allowframebreaks is used. It is especially helpful for bibliography slides.
  - OpenDocument template: Add <office:automatic-styles> tag around automatic styles. The writer now longer provides this (see #2520).
  - Restored Text.Pandoc.Compat.Monoid.
  - Do not export (<>) from custom Prelude. The Prelude now matches base 4.8 Prelude's API.
  - Don't use custom prelude with ghc 7.10. Use the custom prelude only for earlier versions. This change makes stack ghci and cabal repl work (#2503), at least with ghc 7.10.
  - Changed § to % in operators from Odt.Arrows.Utils (#2457). This prevents problems building haddocks with "C" locale.
  - Change default for old-locale flag to False.
  - Use stack in deb, osx, and Windows package generators.
  - Added Vagrantfile for building deb in vm. This should help in automating binary package creation. 'make package' will make the package. 'make package COMMIT=blah' will make the package from commit blah.
  - README:
    - Consistent capitalization for pandoc and Markdown.
    - Fixed auto_identifiers examples (Benoit Schweblin).
    - Improved documentation of template variables (Andrew Dunning).
  pandoc 1.15.1 (2015-10-15)
  - pandocVersion is now defined in Text.Pandoc.Shared and reexported from Text.Pandoc (Alex Vong). This allows writers to access it. (Alex Vong) (API change)
  - For markdown_mmd, add: implicit_figures, superscripts, subscripts (#2401).
  - Added odt as input format (MarLinn). Added new module Text.Pandoc.Reader.ODT (API change). Fully implemented features: Paragraphs, Headers, Basic styling, Unordered lists, Ordered lists, External Links, Internal Links, Footnotes, Endnotes, Blockquotes. Partly implemented features: Citations, Tables.
  - Markdown Reader:
    - Add basic tests for each header style (Ophir Lifshitz).
    - Add implicit header ref tests for headers with spaces (Ophir Lifshitz).
    - Skip spaces in headers (Ophir Lifshitz).
    - Handle 'id' and 'class' in parsing key/value attributes (#2396). # Header {id="myid" class="foo bar"} is now equivalent to # Header {#myid .foo .bar}.
    - Use '=' instead of '#' for atx-style headers in markdown+lhs. (Kristof Bastiaensen)
    - Pipe tables: allow indented columns. Previously the left-hand column could not start with 4 or more spaces indent. This was inconvenient for right-aligned left columns. Note that the first (header column) must still have 3 or fewer spaces indentation, or the table will be treated as an indented code block.
    - Fix regression: allow HTML comments containing --. Technically this isn't allowed in an HTML comment, but we've always allowed it, and so do most other implementations. It is handy if e.g. you want to put command line arguments in HTML comments.
  - LaTeX reader:
    - Don't eat excess whitespace after macros with only optional arguments (#2446).
    - Support longtable (#2411).
    - Implement \Cite (#2335).
    - Support abstract environment. The abstract populates an abstract metadata field.
    - Properly handle booktabs lines. Lines aren't part of the pandoc table model, so we just ignore them (#2307).
  - HTML reader:
    - Handle type attribute on ol, e.g. <ol type="i"> (#2313).
    - Updated for new automatic header attributes.
    - Add auto identifiers if not present on headers. This makes TOC linking work properly.
    - Detect font-variant with pickStyleAttrProps (Ophir Lifshitz).
    - Test <ol> type, class, and inline list-style(-type) CSS (Ophir Lifshitz).
    - Better handling of "section" elements (#2438). Previously <section> tags were just parsed as raw HTML blocks. With this change, section elements are parsed as Div elements with the class "section".
  - MediaWiki reader: handle unquoted table attributes (#2355).
  - DocBook reader:
    - Added proper support for DocBook xref elements (Frerich Raabe). Added dbContent field to reader state, so we can lookup cross refs.
    - Handle informalexample (#2319).
  - Docx Reader:
    - Create special punctuation test (Ophir Lifshitz).
    - Parse soft, no-break hyphen elements (Ophir Lifshitz).
    - Updated headers test (Ophir Lifshitz). Replaced styles.xml in headers.docx with pandoc's current styles.xml, which contains styles for Heading 1 through 6. Added Heading 4 through 7 to the test document. Note that Heading 7 is not parsed as a Heading because there is no Heading 7 style.
  - RST reader: better handling of indirect roles. Previously the parser failed on this kind of case
```
.. role:: indirect(code)

.. role:: py(indirect)
   :language: python

:py:`hi`
```
    Now it correctly recognizes :py: as a code role.
  - Org reader:
    - Add auto identifiers if not present on headers (#2354, Juliusz Gonera).
    - Allow verse blocks to contain empty lines (#2402, Albert Krewinkel).
  - EPUB reader: stop mangling external URLs (#2284).
  - RST writer:
    - Don't insert \ when complex expression in matched pairs. E.g. [:sup:`3`] is okay; you don't need [:sup:`3`\ ].
    - Ensure that \ is inserted when needed before Cite and Span elements that begin with a "complex" element (jgm/pandoc-citeproc#157).
    - Normalize headers only in "standalone" mode (#2394).
  - Haddock writer: escape * and ^ (G. Bataille).
  - Markdown writer:
    - In TOC, add links to headers (#829).
    - Use unicode super/subscripts for digits in plain output (when the superscripts and subscripts extensions are not enabled).
  - Docx writer:
    - Moved invalid character stripping to formattedString. This avoids an inefficient generic traversal (#2356).
    - Use user data directory for reference.docx archive. This allows the test suite to work without installing pandoc first. It also brings the docx writer in line with the odt writer.
    - Tests: docx writer tests now use ../data for data directory. This allows tests to be run without installing first.
    - Tests: Use real jpg (not empty) for docx tests to avoid warning.
  - LaTeX writer:
    - Fixed detection of 'chapters' from template. If a documentclass isn't specified in metadata, but the template has a hardwired bookish documentclass, act as if --chapters was used. This was the default in earlier versions, but it has been broken for a little while.
    - Correctly recognize book documentclass in metadata (#2395).
    - Set language-related variables automatically, depending on the value of the lang field, which is now always assumed to be in BCP47 format (mb21, #1614, #2437).
    - Add \protect to \hyperdef in inline context. This way we don't get an error when this is used as a moveable argument (#2136).
    - Support all frame attributes in Beamer.
    - Percent-encode more special characters in URLs (#1640, #2377). The special characters are '<','>','|','"','{','}','[',']','^', '`'.
  - HTML writer:
    - Update KaTeX JS and CSS versions (Emily Eisenberg).
    - For dzslides, add role="note" for speaker notes (#1693).
    - Percent-encode more special characters in URLs (#1640, #2377). The special characters are '<','>','|','"','{','}','[',']','^', '`'.
    - Render Div with class section as <section> in HTML5.
  - EPUB writer:
    - In TOC, replace literal <br/> with space (#2105).
    - With --webtex, include image file rather than data: URI (#2363).
  - Native writer: format Div properly, with blocks separated.
  - Support bidirectional text output with XeLaTeX, ConTeXt and HTML (#2191, mb21).
  - Reference Docx:
    - Add missing Header 6 style (steel blue) (Ophir Lifshitz).
    - Correct outlineLvl for Header styles (Ophir Lifshitz).
  - Templates
    - Beamer: Add innertheme, outertheme variables (Guilhem Bonnefille, #121). Add space after colon in figure caption. Integrate recent font and language updates from LaTeX template; allow use of mainfont variable for changing the slide text in XeTeX and LuaTeX (Andrew Dunning, #131).
    - LaTeX: Add mainfontoptions, sansfontoptions, monofontoptions, mathfontoptions, fontfamilyoptions (Andrew Dunning, #122). Support handling of bidirectional text (mb21, #120). Improve reliability of superscripts/subscripts under XeTeX and prevent letters and numbers from appearing on a different baseline by removing use of the realscripts package (via xltxtra). To restore use of OpenType characters for these features under XeTeX or LuaTeX, add \usepackage{realscripts} to header-includes (Andrew Dunning, #130). Remove redundant reference to xunicode (Andrew Dunning, #130). Add fontenc, indent, subparagraph variables (Andrew Dunning). Allow use of hidelinks variable for hyperref package (Hugo Roy, #113). Prevent package clash with tufte-latex and other classes that include hyperref or color (Xavier Olive, #115).
    - ConTeXt: Support handling of bidirectional text (mb21, #120).
    - LaTeX and ConTeXt: Use more specific language variables. Instead of directly using lang, we now use babel-lang and polyglossia-lang and context-lang. These variables are set by the writers to the necessary values, based on the lang variable (which now always takes a value in BCP47 format). (mb21, #114, #129).
    - HTML: Support handling of bidirectional text (mb21, #120). Move HTML5 shiv after CSS and fix URL (Andrew Dunning). Add dir attribute in html5 (Andrew Dunning).
    - reveal.js: Add controls, progress variables (Grégoire Pineau, #127). Add width, height variables (Anrew Dunning). Update template from 3.1 source (Andrew Dunning). All configuration options are now available as variables, but are only be included if set (reveal.js uses defaults otherwise).
    - man: Added comment stating that the page is autogenerated by pandoc, giving version. Added adjusting and hyphenate variables (Alex Vong, #123).
  - epub.css: added selectors for nested emphasis (Pablo Rodriguez).
  - MediaBag: ensure that / is always used as path separator.
  - sample.lua: define CaptionedImage, add newline at end (#2393).
  - Added --bash-completion option. This generates a bash completion script. To use: eval "$(pandoc --bash-completion)".
  - Text.Pandoc.Error: Define Typeable and Exception instances for PandocError (#2386).
  - Text.Pandoc.Parsing: toKey: strip off outer brackets. This makes keys with extra space at the beginning and end work: e.g.
```
[foo]: bar

[ foo ]
```
    will now be a link to bar (it wasn't before).
  - Text.Pandoc: disable auto_identifiers for epub. The epub writer inserts its own auto identifiers; this is more complex due to splitting into "chapter" files.
  - Renamed Text.Pandoc.Compat.Locale -> Text.Pandoc.Compat.Time. It now reexports Data.Time.
  - Use custom Prelude to avoid compiler warnings.
    - The (non-exported) prelude is in prelude/Prelude.hs.
    - It exports Monoid and Applicative, like base 4.8 prelude, but works with older base versions.
    - It exports (<>) for mappend.
    - It hides 'catch' on older base versions.
  - Added a stack.ymal and stack install instructions to INSTALL.
  - Clarified what is "out of scope" in README and CONTRIBUTING.md.
  - Added note to CONTRIBUTING.md about ghc versions and travis.
  - Clarify docs on block quotes. The space after > is optional (#2346).
  - Removed obsolete reference to default.csl (#2372).
  - List all styles in manual for --reference-docx (Chris Black)
  - Don't capitalize header links in man page.
  - Added section on repl to CONTRIBUTING.md.
  - README: Added space after backslash in image example (#2329).
  - Document details of citation locator terms (Nick Bart).
  - Fixed some internal links in README (#2309).
  - Improve CSL documentation, variables documentations, links, and cross-references in README. (Andrew Dunning)
  - Fix build failure with --flags=-https (Sergei Trofimovich).
  - Use newManager instead of withManager in recent http-client. This avoids a deprecation warning.
  - Allow building with latest versions of http-types, HUnit, criterion, syb, aeson.
  - Updated benchmark program for new criterion API.
  - Setup.hs: rewrite so as not to use process, directory, filepath. Using anything outside base is dangerous, since older versions of ghc may link against two different versions.
  - Added appveyor (Windows continuous integration) builds.
  - New .travis.yml. Autgenerated using make_travis_yml.hs. This script has been modified in a few ways, e.g. to add GHCOPTS. make .travis.yml regenerates it based on the tested-with field of the cabal file.
  pandoc 1.15.0.6 (2015-07-15)
  - --self-contained: Fixed overaggressive CSS minimization (#2301, 2286). Previously --self-contained wiped out all spaces in CSS, including semantically significant spaces. This was a regression from 1.14.x.
  - Markdown reader: don't allow bare URI links or autolinks in link label (#2300). Added test cases.
  - Text.Pandoc.Parsing, uri: Improved bare autolink detection (#2299). Previously we disallowed - at the end of an autolink, and disallowed the combination =-. This commit liberalizes the rules for allowing punctuation in a bare URI, and adds test cases. One potential drawback is that you can no longer put a bare URI in em dashes like this: this uri---http://example.com---is an example. But in this respect we now match github's treatment of bare URIs.
  - HTML writer: support speaker notes in dzslides. With this change <div class="notes"> and also <div class="notes" role="note"> will be output if -t dzslides is used. So we can have speaker notes in dzslides too. Thanks to maybegeek.
  - Updated dzslides template.
  - Improved documentation of options to print system default files (#2298). --print-default-data-file and --print-default-template.
  - DokuWiki writer: use $..$ for Math instead of <math>..</math> (Tiziano Müller). MathJax seems currently to be the only maintained math rendering extension for DokuWiki.
  - Text.Pandoc.Shared: Changed hierarchicalize so it treats references div as top-level header (#2294). This fixes a bug with --section-divs, where the final references section added by pandoc-citeproc, enclosed in its own div, got nested in the div for the section previous to it.
  - Allow vector 0.11.
  - Require cmark > 0.4.
  pandoc 1.15.0.5 (2015-07-10)
  - HTML writer: Fixed email javascript obfuscation with mailto: URLs (#2280). This fixes a potential security issue. Because single quotes weren't being escaped in the link portion, a specially crafted email address could allow javascript code injection.
  - RST reader: allow inline formatting in definition list field names (Lars-Dominik Braun).
  - PDF: Make sure --latex-engine-opt goes before the filename on the command line. LaTeX needs the argument to come after the options (#1779).
  - CommonMark writer: fixed tags used for super/subscript.
  - ConTeXt template: activate hanging indent for definition lists (mb21).
  - Make cabal require hsb2hs >= 0.3.1 if embed_data_files specified. This is done by adding hookedPrograms in Setup.hs, which allows us to include hsb2hs in Build-Tools in cabal.
  - Improved Windows installer (thanks to nkalvi).
    - When per-machine installation is chosen, the system path is updated instead of the user's.
    - An appropriate default is used for per-machine installation directory.
    - Admin privileges are no longer required for a per-user install
  - Travis: unpack sdist for build to catch packaging bugs.
  - Improved documentation on where user templates go (#2272).
  pandoc 1.15.0.4 (2015-07-03)
  - Added pandoc.1 man page to the repository. It is no longer built as part of the cabal build process. (This proved too fragile.) pandoc.1 can be regenerated (make man/pandoc.1) when README is changed.
  - Copying of the man page now respects --destdir (#2262).
  - Improved error messages for filters. User is now informed if the filter requires an interpreter that isn't found in the path, or if the filter returns an error status.
  pandoc 1.15.0.3 (2015-07-02)
  - Ensure target directory is created when installing man page.
  pandoc 1.15.0.2 (2015-07-02)
  - Added files needed for building man page to Extra-Source-Files.
  pandoc 1.15.0.1 (2015-07-01)
  - Man page is now built and installed as part of the cabal build process. Removed Makefile target for man page.
  pandoc 1.15 (2015-07-01)
  - Man page changes:
    - Removed --man1, --man5 options (breaking change).
    - Removed Text.Pandoc.ManPages module (breaking API change).
    - Makefile target for man/man1/pandoc.1. This uses pandoc to create the man page from README using a custom template and filters.
    - Added man/ directory with template and filters needed to build man page.
    - We no longer have two man pages: pandoc.1 and pandoc_markdown.5. Now there is just pandoc.1, which has all the content from README. This change was needed because of the extensive cross-references between parts of the README.
    - Removed old data/pandoc.1.template and data/pandoc_markdown.5.template.
  - OpenDocument writer: Do not add a carriage return after a hard line break (Michael Chladek).
  - ConTeXt writer:
    - use \goto for internal links.
    - Added a % at end for \reference to avoid spurious space.
  - Ignore sandbox on 'make quick'
  pandoc 1.14.1 (2015-06-30)
  - Added --man1 and --man5 options to pandoc, allowing pandoc to generate its own man pages. Man pages are no longer automatically generated in the build process (the process for this was too complex and prone to failure, #2190). The make-pandoc-man-pages executable has been removed. The man/ directory has been removed, and man page templates have been moved to data/. NOTE TO PACKAGERS: You will no longer find pandoc's man pages in man/, but you can generate them using pandoc --man1 > pandoc.1 and pandoc --man5 > pandoc_markdown.5.
  - Added new unexported module: Text.Pandoc.ManPages.
  - README now acts like a data file (even though it isn't in data/). So, for example, pandoc --print-default-data-file README will produce the README.) This change was required for the --man1 and --man5 options, since the man pages are produced from the README, but it may be useful for other purposes as well.
  - Allow reference.docx and reference.odt to be used with --print-default-data-file and to shadow defaults if placed in the user data directory. Note that as of 1.14, we no longer include these files as data files; instead, we include their components. This change causes pandoc to behave as if it has these data files; they are constructed on demand when needed using getDefaultReferenceDocx and getDefaultReferenceODT.
  - Fixed regression in CSS parsing with --self-contained (#2224). Pandoc 1.14.0.x used css-text to parse the CSS, but its parser silently drops big sections of CSS. This commit replaces the use of css-text with a small but principled CSS preprocessor, which removes whitespace and comments and replaces url() with base 64 data when possible.
  - Use https:// instead of // for MathJax and KaTeX CDN URLs (#1920). This will allow math to work when pages are being viewed locally.
  - Text.Pandoc.Options: Export plainExtensions. These are the extensions used in plain output.
  - LaTeX reader: Don't parse _ and ^ as sub/superscript outside of math mode; treat them as regular inline text. Normally these will cause an error in LaTeX, but there are contexts (e.g. alltt environments) where they are allowed.
  - HTML reader: allow <body> to close <head>.
  - DocBook reader: support mediaobjects and figures (#2184, mb21).
  - RST reader: Fix reference names with special characters (Lars-Dominik Braun).
  - Textile writer: escape + and - as entities (#2225).
  - DokuWiki writer: Use proper <code> tags for code blocks (#2213).
  - Plain writer: don't use symbols for super/subscript (#2237). Simplified code by using plainExtensions.
  - InDesign writer: Properly escape URLs containing more than one colon character (gohai).
  - Docx writer: Make sure we use dist version of reference.docx (and not the user's version) for certain settings. Taking some settings values from a user-supplied reference.docx can lead to corruption. This fixes a regression from the last release (#2249).
  - Text.Pandoc.Shared: exports getDefaultReferenceDocx and getDefaultReferenceODT (API change). These functions have been removed from the Docx and ODT writers.
  - LaTeX template (Xavier Olive):
    - Added CJKmainfont and CJKoptions variables.
    - Allow dvipsnames (e.g. MidnightBlue) for colors (Xavier Olive).
  - Epub templates: use author.role, not author.type.
  - Bump cmark version to >= 0.3.4.
  - Improved Windows installer (#2205, thanks to nkalvi). Users can now select a per-user or systemwide install, and can set the installation path. At the end of installation, the install location is given. The install location is also now given in the list of installed programs in Control Panel. Cleaner WiX syntax is used for setting the path.
  - Added download_stats target to Makefile.
  pandoc 1.14.0.4 (2015-06-02)
  - Added missing commonmark template.
  - Improved try pandoc (moved button, show raw command).
  pandoc 1.14.0.3 (2015-06-01)
  - Allow compilation with syb 0.5.*.
  - Custom writer: fixed some compiler warnings for ghc < 7.10.
  pandoc 1.14.0.2 (2015-05-31)
  - Allow building with hslua 0.4.
  pandoc 1.14.0.1 (2015-05-28)
  - Fixed problem with building of reference.docx and reference.odt when the embed_data_files flag is used. Instead of having a phase of the build where reference.docx and reference.odt are created from their constituent data files, we now construct these archives from their constituents when a docx or odt is built. The constituent files have been moved from extra-source-files to data-files, and reference.docx and reference.odt have been removed. Users can create their own reference.docx or reference.odt by using pandoc to create a simple docx or odt. make-reference-files.hs has been removed, simplifying the build process (#2187)
  - Don't include generated man pages in extra-source-files (#2189).
  - Bumped upper bound for aeson.
  - ConTeXt writer: create internal link anchors for Div elements with identifiers. (This is needed for linked citations to work.)
  pandoc 1.14 (2015-05-27)
  
  New features
  - Added commonmark as input and output format.
  - Added --verbose flag for debugging output in PDF production (#1840, #1653).
  - Allow wildcards in --epub-embed-font arguments (#1939).
  - Added --latex-engine-opt option (#969, #1779, Sumit Sahrawat).
  - Added shortcut_reference_links extension (Konstantin Zudov, #1977). This is enabled by default for those markdown flavors that support reading shortcut reference links, namely: markdown, markdown_strict, markdown_github, markdown_php. If the extension is enabled, the reader parses shortcut reference links like [foo], and the writer creates such links unless doing so would cause problems. Users of markdown flavors that support shortcut reference links should not notice a difference in reading markdown, but the markdown pandoc produces may differ. If shortcut links are not desired, the extension can be disabled in the normal way.
  Behavior changes
  - --toc is now supported for docx output (#458, Nikolay Yakimov). A "dirty" TOC is created at the beginning of document. It can be regenerated after the document has been opened.
  - An implicit --filter pandoc-citeproc is now triggered only when the --bibliography option is used, and not when the bibliography field in metadata is specified (#1849).
  - Markdown reader:
    - Reference links with implicit_header_references are no longer case-sensitive (#1606).
    - Definition lists no longer require indentation for first line (#2087). Previously the body of the definition (after the : or ~ marker) needed to be in column 4. This commit relaxes that requirement, to better match the behavior of PHP Markdown Extra. So, now this is a valid definition list:
      
      foo : bar
    - Resolve a potentially ambiguity with table captions:
      
      foo : bar ----- table -----
      
      Is "bar" a definition, or the caption for the table? We'll count it as a caption for the table.
    - Disallow headerless pipe tables (#1996), to conform to GFM and PHP Markdown Extra. Note: If you have been using headerless pipe tables, this change may cause existing tables to break.
    - Allow pipe tables with header but no body (#2017).
    - Allow a digit as first character of a citation key (Matthias Troffaes). See https://github.com/jgm/pandoc-citeproc/issues/97
  - LaTeX reader:
    - Don't limit includes to .tex extension (#1882). If the extension is not .tex, it must be given explicitly in the \input or \include.
  - Docx reader:
    - Allow numbering in the style file. This allows inherited styles with numbering (lists) (Jesse Rosenthal).
  - Org reader:
    - Support smart punctuation (Craig Bosma).
    - Drop trees with a :noexport: tag (Albert Krewinkel). Trees having a :noexport: tag set are not exported. This mirrors org-mode.
    - Put header tags into empty spans (Albert Krewinkel, #2160). Org mode allows headers to be tagged: * Headline :TAG1:TAG2. Instead of being interpreted as part of the headline, the tags are now put into the attributes of empty spans. Spans without textual content won't be visible by default, but they are detectable by filters. They can also be styled using CSS when written as HTML.
    - Generalize code block result parsing (Albert Krewinkel). Previously, only code blocks were recognized as result blocks; now, any kind of block can be the result.
  - Append newline to the LineBreak in Dokuwiki, HTML, EPUB, LaTeX, MediaWiki, OpenDocument, Texinfo writers (#1924, Tim Lin).
  - HTML writer:
    - Add "inline" or "display" class to math spans (#1914). This allows inline and display math to be styled differently.
    - Include raw latex blocks if --mathjax specified (#1938).
    - Require highlighting-kate >= 0.5.14 (#1903). This ensures that all code blocks will be wrapped in a div with class sourceCode. Also, the default highlighting CSS now adds div.sourceCode { x-overflow: auto; }, which means that code blocks (even with line numbers) will acquire a scroll bar on screens too small to display them (e.g. mobile phones). See also jgm/highlighting-kate#65.
  - LaTeX writer:
    - Use a declaration for tight lists (Jose Luis Duran, Joseph Harriott). Previously, pandoc hard-coded some commands to make tight lists in LaTeX. Now we use a custom command instead, allowing the styling to be changed in a macro in the header. (Note: existing templates may need to be modified to include the definition of this macro. See the current template.)
    - Beamer output: if the header introducing a slide has the class fragile, add the [fragile] option to the slide (#2119).
  - MediaWiki writer:
    - Use File: instead of the deprecated Image: for images and other media files (Greg Rundlett).
  - DocBook writer:
    - Render a Div (id,_,_) [Para _] element as a para element with an id attribute. This makes links to citations work in DocBook with pandoc-citeproc.
  - RST writer:
    - Normalize headings to sequential levels (Nikolay Yakimov). This is pretty much required by docutils.
    - Treat headings in block quotes, etc as rubrics (Nikolay Yakimov).
    - Better handling of raw latex inline (#1961). We use :raw-latex:`...` and add a definition for this role to the template.
  - EPUB writer:
    - Remove linear=no from cover itemref (#1609).
    - Don't use sup element for epub footnotes (#1995). Instead, just use an a element with class footnoteRef. This allows more styling options, and provides better results in some readers (e.g. iBooks, where anything inside the a tag breaks popup footnotes).
    - Take TOC title from toc-title metadata field.
  - Docx writer:
    - Implemented FirstParagraph style (Jesse Rosenthal). Following the ODT writer, we add the FirstParagraph style to the first text paragraph following an image, blockquote, table, heading, or beginning of document. This allows it to be styled differently. The default is for it to be the same as Normal.
    - Added BodyText style (Jesse Rosenthal). We apply a BodyText style to all unstyled paragraphs. This is, essentially, the same as Normal, except that since not everything inherits from BodyText (the metadata won't, for example, or the headers or footnote numbers), we can change the text in the body without having to make exceptions for everything. If we do want to change everything, we can still do it through Normal.
    - Altered Blockquote style slightly (Jesse Rosenthal). Since BlockQuote derives from BodyText, we just want to specify by default that it won't indent, regardless of what BodyText does. Note that this will not produce any visible difference in the default configuration.
    - Take TOC title from toc-title metadata field (Nikolay Yakimov).
    - Added a style to figure images (Nikolay Yakimov). Figures with empty captions use style Figure. Figures with nonempty captions use style Figure with Caption, which is based on Figure, and additionally has keepNext set.
  - ODT writer:
    - Added figure captions (Nikolay Yakimov). The following styles are used for figures: Figure -- for figure with empty caption), FigureWithCaption (based on Figure) -- for figure with caption, FigureCaption (based on Caption) -- for figure captions. Also, TableCaption (based on Caption) is used for table captions.
  API changes
  - New Text.Pandoc.Error module with PandocError type (Matthew Pickering).
  - All readers now return Either PandocError Pandoc instead of Pandoc (Matthew Pickering). This allows better handling of errors.
  - Added Text.Pandoc.Writers.CommonMark, exporting writeCommonMark.
  - Added Text.Pandoc.Readers.CommonMark, exporting readCommonMark.
  - Derive Data and Typeable instances for MediaBag, Extension, ReaderOptions, EPUBVersion, CiteMethod, ObfuscationMethod, HTMLSlideVariant, TrackChanges, WriterOptions (Shabbaz Youssefi).
  - New Ext_shortcut_reference_links constructor for Extension (Konstantin Zudov).
  Bug fixes
  - Markdown reader:
    - Allow smart ' after inline math (#1909, Nikolay Yakimov).
    - Check for tex macros after indented code (#1973).
    - Rewrote charsInBalancedBrackets for efficiency.
    - Make sure a closing </div> doesn't get included in a definition list item (#2127).
    - Don't parse bracketed text as citation if it might be a link, image, or footnote (Nikolay Yakimov).
    - Require space after key in mmd title block (#2026, Nikolay Yakimov). Require space after key-value delimiter colon in mmd title block.
    - Require nonempty value in mmd title block (Nikolay Yakimov).
    - Disable all metadata block extensions when parsing metadata field values (#2026, Nikolay Yakimov). Otherwise we could get a mmd title block inside YAML metadata, for example.
  - HTML reader:
    - Improve self-closing tag detection in htmlInBalanced (#2146).
    - Handle tables with <th> in body rows (#1859, mb21).
    - Fixed htmlTag (#1820). If the tag parses as a comment, we check to see if the input starts with  bbb can be a single paragraph.
    - Fixed superscripts with links: ^[link](/foo)^ gets recognized as a superscripted link, not an inline note followed by garbage.
    - Fixed regression, making markdown reference keys case-insensitive again. Resolves Issue #272.
    - Properly handle abbreviations (like Mr.) at the end of a line.
    - Better handling of intraword underscores, avoiding exponential slowdowns in some cases. Resolves Issue #182.
    - Fixed bug in alignments in tables with blank rows in the header.
  - RST reader:
    - Field lists now allow spaces in field names, and block content in field values. (Thanks to Lachlan Musicman for pointing out the bug.)
    - Definition list items are now always Para instead of Plain, matching behavior of rst2xml.py.
    - In image blocks, the description is parsed properly and used for the alt attribute, not also the title.
    - Skip blank lines at beginning of file. Resolves Debian #611328.
  - LaTeX reader:
    - Improved parsing of preamble. Previously you'd get unexpected behavior on a document that contained \begin{document} in, say, a verbatim block.
    - Allow spaces between \begin or \end and {.
    - Support \L and \l.
    - Skip comments inside paragraphs.
  - LaTeX writer:
    - Escape strings in \href{..}.
    - In nonsimple tables, put cells in \parbox.
  - OpenDocument writer: don't print raw TeX.
  - Markdown writer:
    - Fixed bug in Image. URI was getting unescaped twice!
    - Avoid printing extra blank lines at the end if there are no notes or references.
  - LaTeX and ConTeXt: Escape [ and ] as {[} and {]}. This avoids unwanted interpretation as an optional argument.
  - ConTeXt writer: Fixed problem with inline code. Previously } would be rendered \type{}}. Now we check the string for '}' and '{'. If it contains neither, use \type{}; otherwise use \mono{} with an escaped version of the string.
  - : now allowed in HTML tags. Resolves Issue #274.
  pandoc 1.6 (2010-07-24)
  - New EPUB and HTML Slidy writers. (Issue #122)
    - EPUB is a standard ebook format, used in Apple's iBooks for the iPad and iPhone, Barnes and Noble's nook reader, the Sony reader, and many other devices, and by online ebook readers like bookworm. (Amazon's Kindle uses a different format, MobiPocket, but EPUB books can easily be converted to Kindle format.) Now you can write your book in markdown and produce an ebook with a single command! I've put up a short tutorial here.
    - Slidy, like S5, is a system for producing HTML+javascript slide shows.
  - All input is assumed to be UTF-8, no matter what the locale and ghc version, and all output is UTF-8. This reverts to pre-1.5 behavior. Also, a BOM, if present, is stripped from the input.
  - Markdown now supports grid tables, whose cells can contain arbitrary block elements. (Issue #43)
  - Sequentially numbered example lists in markdown with @ marker.
  - Markdown table captions can begin with a bare colon and no longer need to include the English word "table." Also, a caption can now occur either before or after the table. (Issue #227)
  - New command-line options:
    - --epub-stylesheet allows you to specify a CSS file that will be used to style your ebook.
    - --epub-metadata allows you to specify metadata for the ebook.
    - --offline causes the generated HTML slideshow to include all needed scripts and stylesheets.
    - --webtex causes TeX math to be converted to images using the Google Charts API (unless a different URL is specified).
    - --section-divs causes div tags to be added around each section in an HTML document. (Issue #230, 239)
  - Default behavior of S5 writer in standalone mode has changed: previously, it would include all needed scripts and stylesheets in the generated HTML; now, only links are included unless the --offline option is used.
  - Default behavior of HTML writer has changed. Between 1.2 and 1.5, pandoc would enclose sections in div tags with identifiers on the div tags, so that the sections can be manipulated in javascript. This caused undesirable interactions with raw HTML div tags. So, starting with 1.6, the default is to put the identifiers directly on the header tags, and not to include the divs. The --section-divs option selects the 1.2-1.5 behavior.
  - API changes:
    - HTMLMathMethod: Added WebTeX, removed MimeTeX.
    - WriterOptions: Added writerUserDataDir, writerSourceDirectory, writerEPUBMetadata fields. Removed writerIncludeBefore, writerIncludeAfter.
    - Added headerShift to Text.Pandoc.Shared.
    - Moved parsing code and ParserState from Text.Pandoc.Shared to a new module, Text.Pandoc.Parsing.
    - Added stateHasChapters to ParserState.
    - Added HTMLSlideVariant.
    - Made KeyTable a map instead of an association list.
    - Added accessors for Meta fields (docTitle, docAuthors, docDate).
    - Pandoc, Meta, Inline, and Block have been given Ord instances.
    - Reference keys now have a type of their own (Key), with its own Ord instance for case-insensitive comparison.
    - Added Text.Pandoc.Writers.EPUB.
    - Added Text.Pandoc.UUID.
    - Removed Text.Pandoc.ODT, added Text.Pandoc.Writers.ODT. Removed saveOpenDocumentAsODT, added writeODT.
    - Added Text.Pandoc.Writers.Native and writeNative. Removed prettyPandoc.
    - Added Text.Pandoc.UTF8 for portable UTF8 string IO.
    - Removed Text.Pandoc.Writers.S5 and the writeS5 function. Moved s5Includes to a new module, Text.Pandoc.S5. To write S5, you now use writeHtml with writerSlideVariant set to S5Slides or SlidySlides.
  - Template changes. If you use custom templates, please update them, particularly if you use syntax highlighting with pandoc. The old HTML templates hardcoded highlighting CSS that will no longer work with the most recent version of highlighting-kate.
    - HTML template: avoid empty meta tag if no date.
    - HTML template: Use default highlighting CSS from highlighting-kate instead of hard-coding the CSS into the template.
    - HTML template: insert-before text goes before the title, and immediately after the <body> tag, as documented. (Issue #241)
    - Added slidy and s5 templates.
    - Added amssymb to preamble of latex template. (github Issue 1)
  - Removed excess newlines at the end of output. Note: because output will not contain an extra newline, you may need to make adjustments if you are inserting pandoc's output into a template.
  - In S5 and slidy, horizontal rules now cause a new slide, so you are no longer limited to one slide per section.
  - Improved handling of code in man writer. Inline code is now monospace, not bold, and code blocks now use .nf (no fill) and .IP (indented para).
  - HTML reader parses <tt> as Code. (Issue #247)
  - html+lhs output now contains bird tracks, even when compiled without highlighting support. (Issue #242)
  - Colons are now no longer allowed in autogenerated XML/HTML identifiers, since they have a special meaning in XML.
  - Code improvements in ODT writer. Remote images are now replaced with their alt text rather than a broken link.
  - LaTeX reader improvements:
    - Made latex \section, \chapter parsers more forgiving of whitespace.
    - Parse \chapter{} in latex.
    - Changed rawLaTeXInline to accept \section, \begin, etc.
    - Use new rawLaTeXInline' in LaTeX reader, and export rawLaTeXInline for use in markdown reader.
    - Fixes bug wherein \section{foo} was not recognized as raw TeX in markdown document.
  - LaTeX writer: images are automatically shrunk if they would extend beyond the page margin.
  - Plain, markdown, RST writers now use unicode for smart punctuation.
  - Man writer converts math to unicode when possible, as in other writers.
  - markdown2pdf can now recognize citeproc options.
  - Command-line arguments are converted to UTF-8. (Issue #234)
  - Text.Pandoc.TeXMath has been rewritten to use texmath's parser. This allows it to handle a wider range of formulas. Also, if a formula cannot be converted, it is left in raw TeX; formulas are no longer partially converted.
  - Unicode curly quotes are left alone when parsing smart quotes. (Issue #143)
  - Cabal file changes:
    - Removed parsec < 3 restriction.
    - Added 'threaded' flag for architectures where GHC lacks a threaded runtime.
    - Use 'threaded' only for markdown2pdf; it is not needed for pandoc.
    - Require highlighting-kate 0.2.7.
  - Use explicit imports from Data.Generics. Otherwise we have a conflict with the 'empty' symbol, introduced in syb >= 0.2. (Issue #237)
  - New data files: slidy/slidy.min.js, slidy/slidy.min.css, epub.css.
  pandoc 1.5.1.1 (2010-03-29)
  - Fixed header identifiers (uniqueIdent in Shared) so they work as advertized in README and are guaranteed to be valid XHTML names. Thanks to Xyne for reporting the bug.
  pandoc 1.5.1 (2010-03-23)
  - Fixed treatment of unicode characters in URIs.
  - Revised Setup.hs so it works with debian's build process.
  - Fixed bug in OpenDocument writer that led to invalid XML for some input.
  pandoc 1.5.0.1 (2010-03-21)
  - HTML writer: Fixed error in math writer (with MathML option) that caused an infinite loop for unparsable MathML.
  pandoc 1.5 (2010-03-20)
  - Moved repository to github.
  - New --mathml option, for display of TeX math as MathML.
  - New --data-dir option, allowing users to specify a data directory other than ~/.pandoc. Files placed in this directory will be used instead of system defaults.
  - New --base-header-level option. For example, --base-header-level=2 changes level 1 headers to level 2, level 2 to level 3, etc.
  - New 'plain' output format: plain text without pictures, hyperlinks, inline formatting, or anything else that looks even vaguely markupish.
  - Titles and authors in title blocks can now span multiple lines, as long as the continuation lines begin with a space character.
  - When given an absolute URI as a parameter, pandoc will fetch the content via HTTP.
  - The HTML reader has been made much more forgiving. It no longer requires well-formed xhtml as input.
  - html2markdown has been removed; it is no longer necessary, given the last two changes. pandoc can be used by itself to convert web pages to markdown or other formats.
  - hsmarkdown has also been removed. Use pandoc --strict instead. Or symlink pandoc's executable to hsmarkdown; pandoc will then behave like hsmarkdown used to.
  - An image in a paragraph by itself is now rendered as a figure in most writers, with the alt text as the caption.
  - Incomplete support for reST tables (simple and grid). Thanks to Eric Kow. Colspans and rowspans not yet supported.
  - In mediawiki, links with relative URLs are now formatted as wikilinks. Also, headers have been promoted: = head = is now level 1 instead of level 2.
  - The markdown reader now handles "inverse bird tracks" when parsing literate haskell. These are used for haskell example code that is not part of the literate program.
  - The -B and -A options now imply -s and no longer work in fragment mode.
  - Headerless tables are now printed properly in all writers. In addition, tbody, thead, and cols are used in HTML and Docbook tables.
  - Improved build system; removed obsolete Makefile.
  - In LaTeX writer, \chapter is now used instead of \section. when the documentclass is book, report, or memoir.
  - Many small bug fixes. See [changelog] for details.
  pandoc 1.4 (2010-01-02)
  - New template system replaces old headers, giving users much more control over pandoc's output in --standalone mode. Added --template and --variable options. The --print-default-header option is now --print-default-template. See README under "Templates" for details.
  - The old --custom-header option should still work, but it has been deprecated.
  - New --reference-odt option allows users to customize styles in ODT output.
  - Users may now put custom templates, s5 styles, and a reference ODT in the ~/.pandoc directory, where they will override system defaults. See README for details.
  - Unicode is now used whenever possible in HTML and XML output. Entities are used only where necessary (>, <, ", &).
  - Authors and dates may now include formatting and notes.
  - Added --xetex option for pandoc and markdown2pdf.
  - Windows installer now includes highlighting support and markdown2pdf and hsmarkdown wrappers.
  - Pandoc no longer requires Template Haskell, which should make it more portable.
  - Pandoc can now be built on GHC 6.12, as well as earlier versions.
  - See README for other small improvements and bug fixes.
  pandoc 1.3 (2009-12-10)
  - Added --id-prefix option to help prevent duplicate identifiers when you're generating HTML fragments.
  - Added --indented-code-classes option, which specifies default highlighting syntax for indented code blocks.
  - --number-sections now affects HTML output.
  - Improved syntax for markdown definition lists.
  - Better looking simple tables.
  - Markdown tables without headers are now possible.
  - New hard line break syntax: backslash followed by newline.
  - Improved performance of markdown reader by ~10% by eliminating the need for a separate parsing pass for notes.
  - Improved syntax highlighting for literate Haskell.
  - Support for "..code-block" directive in RST reader.
  - Windows binary now includes highlighting support.
  - Many bug fixes and small improvements. See [changelog] for details.
  pandoc 1.2.1 (2009-07-18)
  - Improved the efficiency of the markdown reader's abbreviation parsing (should give a big performance boost with --smart).
  - HTML writer now wraps sections in divs with unique identifiers, for easier manipulation.
  - Improved LaTeX reader's coverage of math modes.
  - Added a portable Haskell version of markdown2pdf (thanks to Paolo Tanimoto).
  - Made --strict compatible with --standalone and --toc.
  - Many other small improvements and bug fixes. See [changelog] for details.
  pandoc 1.2 (2009-03-01)
  - Added support for literate Haskell. lhs support is triggered by '+lhs' suffixes in formats. For example, 'latex+lhs' is literate Haskell LaTeX. '.lhs' files are treated by default as literate markdown.
  - Added --email-obfuscation option.
  - Brought citeproc support up to date for citeproc-hs-0.2.
  - Many bugs fixed. See [changelog] for details.
  pandoc 1.1 (2008-11-06)
  - New --jsmath option supporting use of pandoc with [jsMath].
  - Classes on HTML table output for better CSS styling.
  - Windows installer no longer requires admin privileges.
  - Many bugs fixed. See [changelog] for details.
  pandoc 1.0 (2008-09-13)
  - New writers for MediaWiki, GNU Texinfo (thanks to Peter Wang), OpenDocument XML (thanks to Andrea Rossato), and ODT (OpenOffice document).
  - New delimited code blocks, with optional syntax highlighting.
  - Reorganized build system: pandoc can now be built using standard Cabal tools. It can be compiled on Windows without Cygwin. The tests can also be run without perl or unix tools.
  - LaTeXMathML replaces ASCIIMathML for rendering math in HTML.
  - Support for "displayed" math.
  - Common abbreviations are now handled more intelligently, with a non-breaking space (and not a sentence-ending space) after the period.
  - Code is -Wall clean.
  - Many bug fixes and small improvements. See [changelog] for full details.
  pandoc 0.46 (2008-01-08)
  - Added a --sanitize-html option (and a corresponding parameter in ParserState for those using the pandoc libraries in programs). This option causes pandoc to sanitize HTML (in HTML or Markdown input) using a whitelist method. Possibly harmful HTML elements are replaced with HTML comments. This should be useful in the context of web applications, where pandoc may be used to convert user input into HTML.
  - Made -H, -A, and -B options cumulative: if they are specified multiple times, multiple files will be included.
  - Many bug fixes and small improvements. See [changelog] for full details.
  pandoc 0.45 (2007-12-09)
  - Many bug fixes and structural improvements. See [changelog] for full details.
  - Improved treatment of math. Math is now rendered using unicode by default in HTML, RTF, and DocBook output. For more accurate display of math in HTML, --gladtex, --mimetex, and --asciimathml options are provided. See the User's Guide for details.
  - Removed support for box-style block quotes in markdown.
  - More idiomatic ConTeXt output.
  - Text wrapping in ConTeXt and LaTeX output.
  - Pandoc now correctly handles all standard line endings (CR, LF, CRLF).
  - New --no-wrap option that disables line wrapping and minimizes whitespace in HTML output.
  - Build process is now compatible with both GHC 6.8 and GHC 6.6. GHC and GHC_PKG environment variables may be used to specify which version of the compiler to use, when multiple versions are installed.
  pandoc 0.44 (2007-09-03)
  
  [ John MacFarlane ]
  - Fixed bug in HTML writer: when --toc was used, anchors were put around headers, which is invalid XHTML (block content within inline element). Now the anchors are put inside the header tags. Resolves Issue #23.
  - Added xmlns attribute to html element in html writer tests. This attribute is added by more recent versions of the xhtml library (>= 3000), and is required for valid XHTML.
  [ Recai Oktaş ]
  - On configure, compile 'Setup.hs' to 'setup' and use 'setup' as the build command instead of 'runhaskell', which, on some platforms (such as s390, alpha, m68k), throws the following error:
```
runhaskell Setup.hs configure --prefix=/usr
ghc-6.6.1: not built for interactive use
```
    This causes a serious FTBFS bug. Closes: #440668.
  pandoc 0.43 (2007-09-02)
  
  [ John MacFarlane ]
  - The focus of this release is performance. The markdown parser is about five times faster than in 0.42, based on benchmarks with the TextMate manual.
  - Main.hs: Replaced CRFilter and tabFilter with single function tabFilter, which operates on the whole string rather than breaking it into lines, and handles dos-style line-endings as well as tabs.
  - Added separate LaTeX reader and native reader tests; removed round-trip tests.
  - Text.Pandoc.Shared:
    - Removed tabsToSpaces and tabsInLine (they were used only in Main.hs.)
    - General code cleanup (to elimante warnings when compiling with -Wall.)
    - Added 'wrapped' function, which helps wrap text into paragraphs, using the prettyprinting library.
    - Rewrote charsInBalanced and charsInBalanced'.
      
      Documented restriction: open and close must be distinct characters.
      
      Rearranged options for greater efficiency.
      
      Bug fix: Changed inner call to charsInBalanced inside charsInBalanced' to charsInBalanced'.
    - anyLine now requires that the line end with a newline (not eof). This is a harmless assumption, since we always add newlines to the end of a block before parsing with anyLine, and it yields a 10% speed boost.
    - Removed unnecessary 'try' in anyLine.
    - Removed unneeded 'try' from romanNumeral parser.
    - Use notFollowedBy instead of notFollowedBy' in charsInBalanced.
    - Removed unneeded 'try' in parseFromString.
    - Removed unneeded 'try' from stringAnyCase. (Now it behaves like 'string'.)
    - Changed definition of 'enclosed' in Text.Pandoc.Shared so that 'try' is not automatically applied to the 'end' parser. Added 'try' in calls to 'enclosed' where needed. Slight speed increase.
  - Writers:
    - Replaced individual wrapping routines in RST, Man, and Markdown writers with 'wrapped' from Text.Pandoc.Shared.
    - Rewrote LaTeX writer to use the prettyprinting library, so we get word wrapping, etc.
    - Modified latex writer tests for new latex writer using prettyprinter.
    - Fixed bug in LaTeX writer: autolinks would not cause \usepackage{url} to be put in the document header. Also, changes to state in enumerated list items would be overwritten.
    - In Markdown writer, escape paragraphs that begin with ordered list markers, so they don't get interpreted as ordered lists.
  - Text.Pandoc.Reades.LaTeX:
    - Fixed bug in LaTeX reader, which wrongly assumed that the roman numeral after "enum" in "setcounter" would consist entirely of "i"s. 'enumiv' is legitimate.
    - LaTeX command and environment names can't contain numbers.
    - Rearranged order of parsers in inline for slight speed improvement.
    - Added '`' to special characters and 'unescapedChar'.
  - Text.Pandoc.Readers.RST:
    - Removed unneeded try's in RST reader; also minor code cleanup.
    - Removed tabchar.
    - Rearranged parsers in inline (doubled speed).
  - Text.Pandoc.Readers.Markdown:
    - Skip notes parsing if running in strict mode. (This yields a nice speed improvement in strict mode.)
    - Simplify autolink parsing code, using Network.URI to test for URIs. Added dependency on network library to debian/control and pandoc.cabal.
    - More perspicuous definition of nonindentSpaces.
    - Removed unneeded 'try' in 'rawLine'.
    - Combined linebreak and whitespace into a new whitespace parser, to avoid unnecessary reparsing of space characters.
    - Removed unnecessary 'try' in 'codeBlock', 'ellipses', 'noteMarker', 'multilineRow', 'dashedLine', 'rawHtmlBlocks'.
    - Use lookAhead in parsers for setext headers and definition lists to see if the next line begins appropriately; if not, don't waste any more time parsing.
    - Don't require blank lines after code block. (It's sufficient to end code block with a nonindented line.)
    - Changed definition of 'emph': italics with '_' must not be followed by an alphanumeric character. This is to help prevent interpretation of e.g. [LC_TYPE]: my_type as [LC<em>TYPE]:my</em>type.
    - Improved Markdown.pl-compatibility in referenceLink: the two parts of a reference-style link may be separated by one space, but not more... [a] [link], [not] [a link].
    - Fixed markdown inline code parsing so it better accords with Markdown.pl: the marker for the end of the code section is a clump of the same number of 's with which the section began, followed by a non- character. So, for example, h ``` i -> <code>h ``` i</code>.
    - Split 'title' into 'linkTitle' and 'referenceTitle', since the rules are slightly different.
    - Rewrote 'para' for greater efficiency.
    - Rewrote link parsers for greater efficiency.
    - Removed redundant 'referenceLink' in definition of inline (it's already in 'link').
    - Refactored escapeChar so it doesn't need 'try'.
    - Refactored hrule for performance in Markdown reader.
    - More intelligent rearranging of 'inline' so that most frequently used parsers are tried first.
    - Removed tabchar parser, as whitespace handles tabs anyway.
  - Text.Pandoc.CharacterReferences:
    - Refactored.
    - Removed unnecessary 'try's for a speed improvement.
    - Removed unnecessary '&' and ';' from the entity table.
  - Build process:
    - Makefile: Get VERSION from cabal file, not Main.hs.
    - Modified MacPorts Portfile:
      
      Depend on haddock
      
      Build and install libraries and library documentation in addition to pandoc executable
      
      Added template item for md5 sum in Portfile.in.
      
      Incorporated changes from MacPorts repository (r28278).
    - FreeBSD port: Don't try to generate distinfo in Makefile. It can be made using 'make makesum' in FreeBSD.
    - Make both freebsd and macports targets depend on tarball.
  - Website and documentation:
    - Updated INSTALL instructions.
    - Added pandocwiki demo to website.
    - Removed local references to Portfile, since pandoc is now in the MacPorts repository.
  pandoc 0.42 (2007-08-26)
  
  [ John MacFarlane ]
  - Main.hs: Use utf8 conversion on the extra files loaded with the -H, -C, -B, and -A options. This fixes problems with unicode characters in these files.
  - Exposed Text.Pandoc.ASCIIMathML, since it is imported in Text.Pandoc.Readers.HTML and without it we get a linking error when using the library.
  - Markdown reader:
    - Added new rule for enhanced markdown ordered lists: if the list marker is a capital letter followed by a period (including a single-letter capital roman numeral), then it must be followed by at least two spaces. The point of this is to avoid accidentally treating people's initials as list markers: a paragraph might begin, "B. Russell was an English philosopher," and this shouldn't be treated as a list. Documented change in README.
    - Blocks that start with "p. " and a digit are no longer treated as ordered lists (it's a page number).
    - Added a needed 'try' to listItem.
    - Removed check for a following setext header in endline. A full test is too inefficient (doubles benchmark time), and the substitute we had before is not 100% accurate.
    - Don't use Code elements for autolinks if --strict specified.
  - LaTeX writer: When a footnote ends with a Verbatim environment, the close } of the footnote cannot occur on the same line or an error occurs. Fixed this by adding a newline before the closing } of every footnote.
  - HTML writer:
    - Removed incorrect "{}" around style information in HTML tables. Column widths now work properly in HTML.
    - If --strict option is specified (and --toc is not), don't include identifiers in headers, for better Markdown compatibility.
  - Build process:
    - Separated $(web_dest) and website targets.
    - In website, index.txt is now constructed from template index.txt.in.
    - Added freebsd target to Markefile. This creates the freebsd Makefile from Makefile.in, and creates distinfo. Removed Makefile and distinfo from the repository.
    - Added macport target to Makefile. Portfile is built from template Portfile.in.
    - Removed OSX package targets. (Too many difficulties involving dependencies on dynamic libraries.)
    - More complete INSTALL instructions for all architectures.
  - Website:
    - Added a programming demo, pandocwiki.
  [ Recai Oktaş ]
  - Do not forget to close pandoc's ITP. Closes: #391666
  pandoc 0.41 (2007-08-19)
  
  [ John MacFarlane ]
  - Fixed bugs in HTML reader:
    - Skip material at end only if </html> is present (previously, only part of the document would be parsed if an error was found; now a proper error message is given).
    - Added new constant eitherBlockOrInline with elements that may count either as block-level or as inline. Modified isInline and isBlock to take this into account.
    - Modified rawHtmlBlock to accept any tag (even an inline tag): this is innocuous, because rawHtmlBlock is tried only if a regular inline element can't be parsed.
    - Added a necessary 'try' in definition of 'para'.
  - Fixed bug in markdown ordered list parsing. The problem was that anyOrderedListStart did not check for a space following the ordered list marker. So in 'A.B. 2007' the parser would be expecting a list item, but would not find one, causing an error. Fixed a similar bug in the RST reader. Resolves Issue #22.
  - Refactored RST and Markdown readers using parseFromString.
  - LaTeX reader will now skip anything after \end{document}.
  - Fixed blockquote output in markdown writer: previously, block quotes in indented contexts would be indented only in the first line.
  - Added note to INSTALL about variations in versions of the xhtml library that can lead to failed tests (thanks to Leif LeBaron).
  pandoc 0.4 (2007-01-16)
  
  [ John MacFarlane ]
  - Added two new output formats: groff man pages and ConTeXt. By default, output files with extensions ".ctx" and ".context" are assumed to be ConTeXt, and output files with single-digit extensions are assumed to be man pages.
  - Enhanced ordered lists (documented in README, under Lists):
    - The OrderedList block element now stores information about list number style, list number delimiter, and starting number.
    - The readers parse this information when possible.
    - The writers use this information to style ordered lists.
    - The enhancement can be disabled using the --strict option.
  - Added support for tables (with a new Table block element). Two kinds of tables are supported: a simple table with one-line rows, and a more complex variety with multiline rows. All output formats are supported, but only markdown tables are parsed at the moment. The syntax is documented in README.
  - Added support for definition lists (with a new DefinitionList block element). All output and input formats are supported. The syntax is documented in README.
  - Added support for superscripts and subscripts (with new Superscript and Subscript inline elements). All input and output formats. The syntax is documented in README.
  - Added support for strikeout (with a new Strikeout inline element). All input and output formats are supported. Thanks to Bradley Kuhn, who contributed a patch. The syntax is documented in README. Resolves Issue #18.
  - Added a --toc|--table-of-contents option. This causes an automatically generated table of contents (or an instruction that creates one) to be inserted at the beginning of the document. Not supported in S5, DocBook, or man page writers.
  - Modified the -m|--asciimathml option:
    - If an optional URL argument is provided, a link is inserted instead of the contents of the ASCIIMathML.js script.
    - Nothing is inserted unless the document actually contains LaTeX math.
  - Removed Blank block element as unnecessary.
  - Removed Key and Note blocks from the Pandoc data structure. All links are now stored as explicit links, and note contents are stored with the (inline) notes.
    - All link Targets are now explicit (URL, title) pairs; there is no longer a 'Ref' target.
    - Markdown and RST parsers now need to extract data from key and note blocks and insert them into the relevant inline elements. Other parsers have been simplified, since there is no longer any need to construct separate key and note blocks.
    - Markdown, RST, and HTML writers need to construct lists of notes; Markdown and RST writers need to construct lists of link references (when the --reference-links option is specified); and the RST writer needs to construct a list of image substitution references. All writers have been rewritten to use the State monad when state is required.
    - Several functions (generateReference, keyTable, replaceReferenceLinks, replaceRefLinksBlockList, and some auxiliaries used by them) have been removed from Text.Pandoc.Shared, since they are no longer needed. New functions and data structures (Reference, isNoteBlock, isKeyBlock, isLineClump) have been added. The functions inTags, selfClosingTag, inTagsSimple, and inTagsIndented have been moved to the DocBook writer, since that is now the only module that uses them. NoteTable is now exported in Text.Pandoc.Shared.
    - Added stateKeys and stateNotes to ParserState; removed stateKeyBlocks, stateKeysUsed, stateNoteBlocks, stateNoteIdentifiers, stateInlineLinks.
    - Added writerNotes and writerReferenceLinks to WriterOptions.
  - Added Text.Pandoc module that exports basic readers, writers, definitions, and utility functions. This should export everything needed for most uses of Pandoc libraries. The haddock documentation includes a short example program.
  - Text.Pandoc.ASCIIMathML is no longer an exported module.
  - Added Text.Pandoc.Blocks module to help in printing markdown and RST tables. This module provides functions for working with fixed-width blocks of text--e.g., placing them side by side, as in a table row.
  - Refactored to avoid reliance on Haskell's Text.Regex library, which (a) is slow, and (b) does not properly handle unicode. This fixed some strange bugs, e.g. in parsing S-cedilla, and improved performance.
    - Replaced 'gsub' with a general list function 'substitute' that does not rely on Text.Regex.
    - Rewrote extractTagType in HTML reader so that it doesn't use regexs.
    - In Markdown reader, replaced email regex test with a custom email autolink parser (autoLinkEmail). Also replaced selfClosingTag regex with a custom function isSelfClosingTag.
    - Modified Docbook writer so that it doesn't rely on Text.Regex for detecting 'mailto' links.
    - Removed escapePreservingRegex and reamped entity-handling functions in Text.Pandoc.Shared and Text.Pandoc.CharacterReferences to avoid reliance on Text.Regex (see below on character reference handling changes).
  - Renamed Text.Pandoc.Entities as Text.Pandoc.CharacterReferences.
  - Changed handling of XML entities. Entities are now parsed (and unicode characters returned) in the Markdown and HTML readers, rather than being handled in the writers. In HTML and Docbook writers, UTF-8 is now used instead of entities for characters above 128. This makes the HTML and DocBook output much more readable and more easily editable.
    - Removed sgmlHexEntity, sgmlDecimalEntity, sgmlNamedEntity, and sgmlCharacterEntity regexes from Text.Pandoc.Shared.
    - Renamed escapeSGMLChar to escapeCharForXML. Added escapeStringForXML. Moved both functions to Text.Pandoc.Writers.Docbook.
    - Added characterReference parser to Text.Pandoc.CharacterReferences. This parses a string and return a unicode character.
    - Rewrote decodeCharacterReferences to use the new parser instead of Text.Regex.
    - Added new charRef parser for Markdown and HTML, which replaces the old 'entity' parser. Added '&' as a special character in Markdown reader.
    - Modified HTML and Markdown readers to call decodeEntities on all raw strings (e.g. authors, dates, link titles), to ensure that no unprocessed entities are included in the native representation of the document. (In the HTML reader, most of this work is done by a change in extractAttributeName.)
    - In XML and Markdown output, escape unicode nonbreaking space as ' ', since a unicode non-breaking space is impossible to distinguish visually from a regular space. (Resolves Issue #3.)
    - Removed encodeEntitiesNumerical.
    - Use Data.Map for entityTable and (new) reverseEntityTable, for a slight performance boost over the old association list.
    - Removed unneeded decodeEntities from 'str' parser in HTML and Markdown readers.
  - Text.Pandoc.UTF8: Renamed encodeUTF8 to toUTF8, decodeUTF8 to fromUTF8, for clarity.
  - Replaced old haskell98 module names replaced by hierarchical module names, e.g. List by Data.List. Removed haskell98 from dependencies in pandoc.cabal, and added mtl (needed for state monad). Substituted xhtml for html.
  - Refactored and cleaned up character escaping in writers, using backslashEscapes and escapeStringUsing functions.
  - Instead of adding \n\n to the end of an input string in Main.hs, this is now done in the readers. This makes the libraries behave the way you'd expect from the pandoc program. Resolves Issue #10.
  - URLs and email addresses in autolinks are now typeset as Code.
  - In Main.hs, changed putStr to putStrLn -- mainly because MacOS X doesn't display the whole output unless there's a line ending.
  - Major code cleanup in all modules, for greater consistency, concision, and readability.
  - HTML reader:
    - Fixed several bugs (extractTagType, attribute parsing).
    - Remove Null blocks in lists of blocks when possible.
    - Allow HTML comments as raw HTML inline.
  - Markdown reader:
    - Ordered list items may no longer begin with uppercase letters, or letters greater than 'n'. (This prevents first initials and page reference, e.g. 'p. 400', from being parsed as beginning lists.) Also, numbers beginning list items may no longer end with ')', which is now allowed only after letters. Note: These changes may cause documents to be parsed differently. Users should take care in upgrading.
    - Changed autoLink parsing to conform better to Markdown.pl's behavior. <google.com> is not treated as a link, but <http://google.com>, <ftp://google.com>, and <mailto:google@google.com> are.
    - Cleaned up handling of embedded quotes in link titles. Now these are stored as a '"' character, not as '"'.
    - Use lookAhead parser for the 'first pass' (looking for reference keys), instead of parsing normally, then using setInput to reset input. This yields a slight performance boost.
    - Fixed several bugs in smart quote recognition.
    - Fixed bug in indentSpaces (which didn't properly handle cases with mixed spaces and tabs).
    - Consolidated 'text', 'special', and 'inline' into 'inline'.
    - Fixed bug which allowed URL and title to be separated by multiple blank lines in links and reference keys. They can be on separate lines but can't have blank lines between them.
    - Correctly handle bracketed text inside inline footnotes and links,using new function inlinesInBalanced. Resolves Issue #14.
    - Fixed bug in footnotes: links in footnotes were not being processed. Solution: three-stage parse. First, get all the reference keys and add information to state. Next, get all the notes and add information to state. (Reference keys may be needed at this stage.) Finally, parse everything else.
    - Replaced named constants like 'emphStart' with literals.
    - Removed an extra occurrence of escapedChar in definition of inline.
  - RST reader:
    - Allow the URI in a RST hyperlink target to start on the line after the reference key.
    - Added 'try' in front of 'string', where needed, or used a different parser. This fixes a bug where ````` would not be correctly parsed as a verbatim `.
    - Fixed slow performance in parsing inline literals in RST reader. The problem was that # was seen by 'inline' as a potential link or image. Fix: inserted 'notFollowedBy (char '`')' in link parsers. Resolves Issue #8.
    - Use lookAhead instead of getInput/setInput in RST reader. Removed unneeded getState call, since lookAhead automatically saves and restores the parser state.
    - Allow hyperlink target URIs to be split over multiple lines, and to start on the line after the reference. Resolves Issue #7.
    - Fixed handling of autolinks.
  - LaTeX reader:
    - Replaced choice [(try (string ...), ...] idiom with oneOfStrings, for clarity.
    - Added clauses for tilde and caret. Tilde is \ensuremath{\sim}, and caret is \^{}, not \^ as before.
    - Added parsing for \url.
    - Parse \texttt{} as code, provided there's nothing fancy inside.
  - HTML writer:
    - Modified HTML writer to use the Text.XHtml library. This results in cleaner, faster code, and it makes it easier to use Pandoc in other projects, like wikis, which use Text.XHtml. Two functions are now provided, writeHtml and writeHtmlString: the former outputs an Html structure, the latter a rendered string. The S5 writer is also changed, in parallel ways (writeS5, writeS5String).
    - The Html header is now written programmatically, so it has been removed from the 'headers' directory. The S5 header is still needed, but the doctype and some of the meta declarations have been removed, since they are written programmatically. This change introduces a new dependency on the xhtml package.
    - Fixed two bugs in email obfuscation involving improper escaping of '&' in the <noscript> section and in --strict mode. Resolves Issue #9.
    - Fixed another bug in email obfuscation: If the text to be obfuscated contains an entity, this needs to be decoded before obfuscation. Thanks to thsutton for the patch. Resolves Issue #15.
    - Changed the way the backlink is displayed in HTML footnotes. Instead of appearing on a line by itself, it now generally appears on the last line of the note. (Exception: when the note does not end with a Plain or Para block.) This saves space and looks better.
    - Added automatic unique identifiers to headers:
      
      The identifier is derived from the header via a scheme documented in README.
      
      WriterState now includes a list of header identifiers and a table of contents in addition to notes.
      
      The function uniqueIdentifiers creates a list of unique identifiers from a list of inline lists (e.g. headers).
      
      This list is part of WriterState and gets consumed by blockToHtml each time a header is encountered.
    - Include CSS for .strikethrough class in header only if strikethrough text appears in the document.
    - If the 'strict' option is specified, elements that do not appear in standard markdown (like definition lists) are passed through as raw HTML.
    - Simplified treatment of autolinks, using pattern matching instead of conditionals.
  - Markdown writer:
    - Links in markdown output are now printed as inline links by default, rather than reference links. A --reference-links option has been added that forces links to be printed as reference links. Resolves Issue #4.
    - Use autolinks when possible. Instead of [site.com](site.com), use <site.com>.
  - LaTeX writer:
    - Rewrote to use the State monad. The preamble now includes only those packages that are actually required, given the document's content. Thus, for example, if strikeout is not used, ulem is not required. Modified LaTeXHeader accordingly.
    - Modified LaTeX writer to insert \, between consecutive quotes.
    - Removed unused function tableRowColumnWidths.
    - Simplified code for escaping special characters.
    - Leave extra blank line after \maketitle.
    - Include empty \author{} when no author specified to avoid LaTeX errors.
    - Include fancyvrb code in header only if needed -- that is, only if there is actually code in a footnote.
    - Use \url{} for autolinks.
    - Include [mathletters] option in ucs package, so that basic unicode Greek letters will work correctly.
  - RST writer: Force blank line before lists, so that sublists will be handled correctly.
  - Docbook writer: Fixed a bug: email links with text, like foo, were being incorrectly treated as autolinks.
  - Removed Text.ParserCombinators.Pandoc and moved all its functions to Text.Pandoc.Shared.
  - Text.Pandoc.Shared:
    - Added defaultWriterOptions.
    - Added writerTableOfContents to WriterOptions.
    - Added writerIgnoreNotes option to WriterOptions. This is needed for processing header blocks for a table of contents, since notes on headers should not appear in the TOC.
    - Added prettyprinting for native Table format.
    - Removed some unneeded imports.
    - Moved escape and nullBlock parsers from Text.ParserCombinators.Pandoc, since the latter is for general-purpose parsers that don't depend on Text.Pandoc.Definition.
    - Moved isHeaderBlock from Text.Pandoc.Writers.HTML.
    - Moved Element, headerAtLeast, and hierarchicalize from Docbook writer, because HTML writer now uses these in constructing a table of contents.
    - Added clauses for new inline elements (Strikeout, Superscript, Subscript) to refsMatch.
    - Removed backslashEscape; added new functions escapeStringUsing and backslashEscapes.
    - Moved failIfStrict from markdown reader, since it is now used also by the HTML reader.
    - Added a 'try' to the definition of indentSpaces.
    - In definition of 'reference', added check to make sure it's not a note reference.
    - Added functions: camelCaseToHyphenated, toRomanNumeral, anyOrderedListMarker, orderedListmarker, orderedListMarkers, charsInBalanced', withHorizDisplacement, romanNumeral
    - Fixed a bug in the anyLine parser. Previously it would parse an empty string "", but it should fail on an empty string, or we get an error when it is used inside "many" combinators.
    - Removed followedBy' parser, replacing it with the lookAhead parser from Parsec.
    - Added some needed 'try's before multicharacter parsers, especially in 'option' contexts.
    - Removed the 'try' from the 'end' parser in 'enclosed', so that 'enclosed' behaves like 'option', 'manyTill', etc.
    - Added lineClump parser, which parses a raw line block up to and including any following blank lines.
    - Renamed parseFromStr to parseFromString.
    - Added a 'try' to the 'end' parser in 'enclosed'. This makes errors in the use of 'enclosed' less likely. Removed some now-unnecessary 'try's in calling code.
    - Removed unneeded 'try' in blanklines.
    - Removed endsWith function and rewrote calling functions to use isSuffixOf instead.
    - Added >>~ combinator.
    - Fixed bug in normalizeSpaces: Space:Str "":Space should compress to Space.
  - Refactored runtests.pl; added separate tests for tables.
  - Shell scripts:
    - Added -asxhtml flag to tidy in html2markdown. This will perhaps help the parser, which expects closing tags.
    - Modified markdown2pdf to run pdflatex a second time if --toc or --table-of-contents was specified; otherwise the table of contents won't appear.
    - Modified markdown2pdf to print a helpful message if the 'ulem' LaTeX package is required and not found.
  - Changes to build process:
    - Dropped support for compilation with GHC 6.4. GHC 6.6 or higher is now required.
    - Removed cabalize and Pandoc.cabal.in. The repository now contains pandoc.cabal itself.
    - Pandoc.cabal has been changed to pandoc.cabal, because HackageDB likes the cabal file to have the same name as the tarball.
    - Expanded and revised the package description in pandoc.cabal. Revised the package synopsis.
    - The tarball built by 'make tarball' now contains files built from templates (including man pages and shell scripts), so pandoc can be built directly using Cabal tools, without preprocessing.
    - Executable binaries are now stripped before installing.
    - Man pages are now generated from markdown sources, using pandoc's man page writer.
    - Use HTML version of README (instead of RTF) in Mac OS X installer.
    - Instead of testing for the existence of a pandoc symlink in build-exec, use ln -f.
  - Documentation:
    - Updated README and man pages with information on new features.
    - Updated INSTALL instructions with some useful clarifications and links.
    - Updated web content.
  - Added FreeBSD port.
  [ Recai Oktaş ]
  - debian/control:
    - Changed pandoc's Build-Depends to include libghc6-mtl-dev and libghc6-xhtml-dev. Removed libghc6-html-dev.
    - Suggest texlive-latex-recommended | tetex-extra instead of tetex-bin. This brings in fancyvrb and unicode support.
  pandoc 0.3 (2007-01-05)
  
  [ John MacFarlane ]
  - Changes in pandoc options:
    - Allow options to follow or precede arguments.
    - Changed '--smartypants' to '--smart' and adjusted symbols accordingly.
    - Added '--strict' option.
    - Added '-o/--output' option.
    - Added '--dump-args' and '--ignore-args' options (for use in wrappers).
    - Modified '-v' and '-h' output to go to STDERR, not STDOUT, and return error conditions. This is helpful for writing wrappers.
    - Added copyright message to '-v' output, modeled after FSF messages.
    - Reformatted usage message so that it doesn't wrap illegibly.
    - Removed extra blanks after '-h' and '-D' output.
  - Added docbook writer.
  - Added implicit setting of default input and output format based on input and output filename extensions. These defaults are overridden if explicit input and output formats are specified using '-t', '-f', '-r', or '-w' options. Documented in pandoc(1) man page and README.
  - Allow ordered list items to begin with (single) letters, as well as numbers. The list item marker may now be terminated either by '.' or by ')'. This extension to standard markdown is documented in README.
  - Revised footnote syntax. (See README for full details.) The '[^1]' format now standard in markdown extensions is supported, as are inline footnotes with this syntax: ^[My note.]. The earlier footnote syntax ^(1) is no longer supported.
  - Improved HTML representation of footnotes. All footnotes are now auto-numbered and appear in an ordered list at the end of the HTML document. Since the default appearance is now acceptable, the old footnote styles have been removed from the HTML header.
  - Bug fixes:
    - Fixed a serious bug in the markdown, LaTeX, and RST readers. These readers ran 'runParser' on processed chunks of text to handle embedded block lists in lists and quotation blocks. But then any changes made to the parser state in these chunks was lost, as the state is local to the parser. So, for example, footnotes didn't work in quotes or list items. The fix: instead of calling runParser on some raw text, use setInput to make it the input, then parse it, then use setInput to restore the input to what it was before. This is shorter and more elegant, and it fixes the problem.
    - Fixed bug in notFollowedBy' combinator (adding 'try' before 'parser'). Adjusted code that uses this combinator accordingly.
    - Fixed bug in RTF writer that caused improper indentation on footnotes occurring in indented blocks like lists.
    - Fixed parsing of metadata in LaTeX reader. Now the title, author, and date are parsed correctly. Everything else in the preamble is skipped.
    - Modified escapedChar in LaTeX reader to allow a \ at the end of a line to count as escaped whitespace.
    - Modified LaTeX reader to produce inline links rather than reference links. Otherwise, links in footnotes aren't handled properly.
    - Fixed handling of titles in links in Markdown reader, so that embedded quotation marks are now handled properly.
    - Fixed Markdown reader's handling of embedded brackets in links.
    - Fixed Markdown reader so that it only parses bracketed material as a reference link if there is actually a corresponding key.
    - Revised inline code parsing in Markdown reader to conform to markdown standard. Now any number of s can begin inline code, which will end with the same number of s. For example, to have two backticks as code, write ``. Modified Markdown writer accordingly.
    - Fixed bug in text-wrapping routine in Markdown and RST writers. Now LineBreaks no longer cause wrapping problems.
    - Supported hexadecimal numerical entity references as well as decimal ones.
    - Fixed bug in Markdown reader's handling of underscores and other inline formatting markers inside reference labels: for example, in '[A_B]: /url/a_b', the material between underscores was being parsed as emphasized inlines.
    - Changed Markdown reader's handling of backslash escapes so that only non-alphanumeric characters can be escaped. Strict mode follows Markdown.pl in only allowing a select group of punctuation characters to be escaped.
    - Modified HTML reader to skip a newline following a <br> tag. Otherwise the newline will be treated as a space at the beginning of the next line.
  - Made handling of code blocks more consistent. Previously, some readers allowed trailing newlines, while others stripped them. Now, all readers strip trailing newlines in code blocks. Writers insert a newline at the end of code blocks as needed.
  - Modified readers to make spacing at the end of output more consistent.
  - Minor improvements to LaTeX reader:
    - \thanks now treated like a footnote.
    - Simplified parsing of LaTeX command arguments and options. commandArgs now returns a list of arguments OR options (in whatever order they appear). The brackets are included, and a new stripFirstAndLast function is provided to strip them off when needed. This fixes a problem in dealing with \newcommand and \newenvironment.
  - Revised RTF writer:
    - Default font is now Helvetica.
    - An \f0 is added to each \pard, so that font resizing works correctly.
  - Moved handling of "smart typography" from the writers to the Markdown and LaTeX readers. This allows great simplification of the writers and more accurate smart quotes, dashes, and ellipses. DocBook can now use <quote>. The '--smart' option now toggles an option in the parser state rather than a writer option. Several new kinds of inline elements have been added: Quoted, Ellipses, Apostrophe, EmDash, EnDash.
  - Changes in HTML writer:
    - Include title block in header even when title is null.
    - Made javascript obfuscation of emails even more obfuscatory, by combining it with entity obfuscation.
  - Changed default ASCIIMathML text color to black.
  - Test suite:
    - Added --strip-trailing-cr option to diff in runtests.pl, for compatibility with Windows.
    - Added regression tests with footnotes in quote blocks and lists.
  - Makefile changes:
    - osx-pkg target creates a Mac OS X package (directory). New osx directory contains files needed for construction of the package.
    - osx-dmg target creates a compressed disk image containing the package.
    - win-pkg target creates Windows binary package.
    - tarball target creates distribution source tarball.
    - website target generates pandoc's website automatically, including demos. New 'web' directory contains files needed for construction of the website (which will be created as the 'pandoc' subdirectory of 'web').
    - Makefile checks to see if we're running Windows/Cygwin; if so, a '.exe' extension is added to each executable in EXECS.
  - Removed all wrappers except markdown2pdf and html2markdown.
  - Added new wrapper hsmarkdown, to be used as a drop-in replacement for Markdown.pl. hsmarkdown calls pandoc with the '--strict' option and disables other options.
  - Added code to html2markdown that tries to determine the character encoding of an HTML file, by parsing the "Content-type" meta tag.
    - If the encoding can't be determined, then if the content is local, the local encoding is used; if it comes from a URL, UTF-8 is used by default.
    - If input is from STDIN, don't try to determine character encoding.
    - Encoding can be specified explicitly using '-e' option.
  - Improved warning messages in wrappers:
    - Print warning if iconv not available
    - More user-friendly error messages in markdown2pdf, when pdflatex fails.
  - Code cleanup:
    - Renamed 'Text/Pandoc/HtmlEntities' module to 'Text/Pandoc/Entities'. Also changed function names so as not to be HTML-specific.
    - Refactored SGML string escaping functions from HTML and Docbook writers into Text/Pandoc/Shared. (escapeSGML, stringToSGML)
    - Removed 'BlockQuoteContext' from ParserContext, as it isn't used anywhere.
    - Removed splitBySpace and replaced it with a general, polymorphic splitBy function.
    - Refactored LaTeX reader for clarity (added isArg function).
    - Converted some CR's to LF's in src/ui/default/print.css.
    - Added license text to top of source files.
    - Added module data for haddock to source files.
    - Reformatted code for consistency.
  - Rewrote documentation and man pages. Split README into INSTALL and README.
  - Split LICENSE into COPYING and COPYRIGHT.
  - Removed TODO, since we now maintain ToDo on the wiki.
  - Made COPYRIGHT in top level a symlink to debian/copyright, to avoid duplication.
  [ Recai Oktaş ]
  - Revamped build process to conform to debian standards and created a proper debian package. Closes: #391666.
  - Modified build process to support GHC 6.6.
    - The package can still be compiled using GHC 6.4.2, though because of dependencies the "make deb" target works only with GHC 6.6+.
    - The script 'cabalize' is used to create an appropriate 'Pandoc.cabal' from 'Pandoc.cabal.in', depending on the GHC and Cabal versions.
  - Refactored template processing (fillTemplates.pl).
  - Modified wrapper scripts to make them more robust and portable. To avoid code duplication and ensure consistency, wrappers are generated via a templating system from templates in src/wrappers.
    - Wrappers now accept multiple filenames, when appropriate.
    - Spaces and tabs allowed in filenames.
    - getopts shell builtin is used for portable option parsing.
    - Improved html2markdown's web grabber code, making it more robust, configurable and verbose. Added '-e', '-g' options.
  pandoc 0.2 (2006-08-14)
  - Fixed unicode/utf-8 translation
  pandoc 0.1 (2006-08-14)
  - Initial creation of debian package

Changelog for pandoc-3.1.10

Revision history for pandoc

pandoc 3.1.10 (2023-12-12)

pandoc 3.1.9 (2023-10-27)

pandoc 3.1.8 (2023-09-08)

pandoc 3.1.7 (2023-08-31)

pandoc 3.1.6.2 (2023-08-22)

pandoc 3.1.6.1 (2023-08-11)

pandoc 3.1.6 (2023-07-20)

pandoc 3.1.5 (2023-07-07)

pandoc 3.1.4 (2023-06-24)

pandoc 3.1.3 (2023-06-07)

pandoc 3.1.2 (2023-03-26)

pandoc 3.1.1 (2023-03-05)

pandoc 3.1 (2023-02-09)

pandoc 3.0.1 (2023-01-25)

pandoc 3.0 (2023-01-18)

pandoc 2.19.2 (2022-08-22)

pandoc 2.19.1 (2022-08-18)

pandoc 2.19 (2022-08-03)

pandoc 2.18 (2022-04-04)

pandoc 2.17.1.1 (2022-01-31)

pandoc 2.17.1 (2022-01-30)

pandoc 2.17.0.1 (2022-01-14)

pandoc 2.17 (2022-01-12)

pandoc 2.16.2 (2021-11-21)

pandoc 2.16.1 (2021-11-02)

pandoc 2.16 (2021-10-31)

pandoc 2.15 (2021-10-23)

pandoc 2.14.2 (2021-08-21)

pandoc 2.14.1 (2021-07-18)

pandoc 2.14.0.3 (2021-06-22)

pandoc 2.14.0.2 (2021-06-13)

pandoc 2.14.0.1 (2021-06-01)

pandoc 2.14 (2021-05-28)

pandoc 2.13 (2021-03-21)

pandoc 2.12 (2021-03-08)

pandoc 2.11.4 (2021-01-22)

pandoc 2.11.3.2 (2020-12-29)

pandoc 2.11.3.1 (2020-12-18)

pandoc 2.11.3 (2020-12-17)

pandoc 2.11.2 (2020-11-19)

pandoc 2.11.1.1 (2020-11-07)

pandoc 2.11.1 (2020-11-03)

pandoc 2.11.0.4 (2020-10-21)

pandoc 2.11.0.3 (2020-10-20)

pandoc 2.11.0.2 (2020-10-15)

pandoc 2.11.0.1 (2020-10-13)

pandoc 2.11 (2020-10-11)

pandoc 2.10.1 (2020-07-23)

pandoc 2.10 (2020-06-29)

pandoc 2.9.2.1 (2020-03-23)

pandoc 2.9.2 (2020-02-15)

pandoc 2.9.1.1 (2020-01-05)

pandoc 2.9.1 (2019-12-23)

pandoc 2.9 (2019-12-11)

pandoc 2.8.1 (2019-12-05)

pandoc 2.8.0.1 (2019-11-26)

pandoc 2.8 (2019-11-22)

pandoc 2.7.3 (2019-06-11)

pandoc 2.7.2 (2019-04-05)

pandoc 2.7.1 (2019-03-14)

pandoc 2.7 (2019-03-03)

pandoc 2.6 (2019-01-30)

pandoc 2.5 (2018-11-27)

pandoc 2.4 (2018-11-03)

New features

Behavior changes

API changes

Bug fixes and under-the-hood improvements

Default template changes

Documentation improvements

Build infrastructure improvements

pandoc 2.3.1 (2018-09-28)

pandoc 2.3 (2018-09-16)

pandoc 2.2.3.2 (2018-08-07)

pandoc 2.2.3.1 (2018-08-06)

pandoc 2.2.3 (2018-08-05)

pandoc 2.2.2.1 (2018-07-19)

pandoc 2.2.2 (2018-07-16)