doclayout

0.4

• Expose unfoldD [API change].
• Remove realLengthNoShortcut, isEmojiModifier, and isEmojiJoiner [API change] (Stephen Morgan).
• Add new exported functions realLengthNarrowContext, realLengthWideContext, realLengthNarrowContextNoShortcut, realLengthWideContextNoShortcut, isSkinToneModifier, isZWJ [API change] (Stephen Morgan).
• Compute realLength strictly.
• Make getOffset stricter.
• Drop support for ghc <= 8.4, add test for ghc 9.2.
• Don't collapse the CarriageReturn + Newline combination (#20). We want to ensure that a literal starting with a Newline doesn't lose the newline if it occurs after a CarriageReturn. This affects code blocks in pandoc that begin with newlines.
• Improve performance of NoShortcut code (Stephen Morgan).
• Simplify emoji processing (Stephen Morgan).
• Add benchmarking for code with no shortcuts (Stephen Morgan).
• Add unicodeWidth.inc to cabal file.
• Fix offset, minOffset, updateColumn so they don't re-render.
• Get unicode block widths directly from the Unicode specification, rather than writing it out ourselves (Stephen Morgan).
• Resolve the width of ambiguous characters based on their context (Stephen Morgan).
• Spacing marks should have nonzero width, even though they are combining characters (Stephen Morgan).
• Add shortcuts for extended Latin, Arabic, Cyrillic, Greek, Devangari, Bengali, Korean, Telugu, and Tamil (Stephen Morgan).
• Fix location of extra-source-files in cabal.
• update.hs: require text package
• Handle emoji variation modifiers specially, so the keypad emoji can be ignored (Stephen Morgan). This results in a 16% speedup of realLength on ascii text.
• Add benchmarks for all scripts used by more than 50 million people, plus a couple more. (#9, Stephen Morgan).

0.3.1.1

• Fix the end of the block of zero width characters which contains the zero-width joiners and directional markings (Stephen Morgan, #5). This fixes a regression introduced in 0.3.1, affecting code points 0x2010 to 0x2030.

0.3.1

• Improved handling of emojis. Emojis are double-wide, but previously this library did not treat them as such. We now have comprehensive support of emojis, including variation modifiers and zero-width joiners, verified by a test suite. Performance has been confirmed to be no worse for text without emojis. (Stephen Morgan, #1). API changes: export realLengthNoShortcut, isEmojiModifier, isEmojiVariation, isEmojiJoiner.

0.3.0.2

• NOINLINE literal instead of fromString (#2, sjakobi). This produces a further reduction in allocations and pandoc compile time.

0.3.0.1

• NOINLINE fromString (#1). @sjakobi reports that this change reduced total allocations for building pandoc-2.12 with GHC 8.10.4 by 8.5% and reduced peak allocations are reduced from 3854MB to 3389MB.

0.3

• Add foldlChar to signature of HasChars [API change].
• Use foldlChar in realLength. This avoids a stack overflow we were getting with long strings in the previous version (with foldrChar). See jgm/pandoc#6031.
• Replace isBlank with isBreakable and improved startsWithBlank. Previously isBlank was used in the layout algorithm where what we really wanted was isBreakable.
• Avoid unnecessary calculation in updateColumns.
• Replace a right fold with a strict left fold.
• Add strictness annotations in realLength and updateColumn.

0.2.0.1

• Made realLength smarter about combining characters. If a string starts with a combining character, that character takes up a width of 1; if the combining character occurs after another character, it takes 0. See jgm/pandoc#5863.
• Improve isBlank, re-use in rendering code for BreakingSpace.
• Fixed incorrect Text width in renderig blocks.

0.2

• Add instances for Doc: Data, Typeable, Ord, Read, Generic.
• Add literal (like text, but polymorphic).
• Change some IsString constraints to HasChars.
• Add some default definitions for methods in HasChars.
• Change offset and minOffset to be more efficient (in simple cases they no longer render and count line lengths).
• Add updateColumn.
• Fix problem with lblock/cblock/rblock when chop is invoked. This caused very strange behavior in which text got reversed in certain circumstances.

0.1

• Initial release.