Revision history for brittany

0.12.1.1 -- December 2019

• Bugfixes:
  • Fix layouting regression of record update for many/large fields
  • Fix whitespace regression on ExplicitForall notation (foo :: forall a . Show a => a -> a, note the double space) introduced in 0.12. (#264)
  • Fix roundtripping of type equality constraint f :: ((~) a b) => a -> b (#267)
• One experimental feature addition: Turning brace notation semicolons into newlines when formatting (see #270)

0.12.1.0 -- September 2019

• Support ghc-8.8
• Support for OverloadedLabels extension (thanks to Evan Rutledge Borden @eborden)
• Support for Implicit Params extension (thanks to pepe iborra @pepeiborra)
• Add flag --no-user-config to enable only using manually passed config
• Disable the performance test suite by default to prevent spurious failures on certain CI setups. The github/travis brittany CI still has all tests enabled. See the brittany-test-perf flag in the cabal file.
• Bugfixes:
  • Fix one wandering-comment bug for let-in expressions
  • Fix invalid result for prefix operator pattern matches
  • Fix lambda expression with laziness/strictness annotation
  • Fix parenthesis handling for infix pattern matches with 3+ arguments
• Changes to layouting behaviour:
  • For pattern matching and data/instance definitions, the usage of parenthesis is now "normalized", i.e. superfluous parens are removed by brittany.

0.12.0.0 -- June 2019

• Support for ghc-8.6 (basic support, not necessarily all new syntactic extensions)
• Support -XExplicitNamespaces and -XPatternSynonyms
• Allow a --dry-run sort of operation via flag "-c/--check-mode" (thanks to Doug Beardsley @mightybyte)
• Include file name in errors about unsupported syntax nodes (thanks to @5outh)
• Partially implement layouting class instances: Layouts children, but falls back on ghc-exactprint for the instance head (thanks to Rupert Horlick @ruhatch)
• Implement layouting for type synonyms (thanks to Rupert Horlick @ruhatch)
• Support -XMagicHash, -XUnboxedTuples (thanks to Sergey Vinokurov @sergv)
• Support -XQuasiQuotes (no formatting applied to the splices; they are simply retained without causing the dreaded "Unknown construct: HsSpliceE{}")
  • lconfig_allowHangingQuasiQuotes controls whether multi-line QuasiQuotes are allowed to start at the end of the current line, or whether they are always placed in new lines.
• Bugfixes:
  • Fix rare-case alignment bug with IndentPolicyMultiple (#144)
  • Make inline layout config apply to module header (#151)
  • Fix unaligned import-hiding layout (#150)
  • Fix idempotence violation for comments around if-then-else (#167)
  • Fix comments having an effect on far-away parent node's layout (#159)
  • Fix imports of type operators ("symbolic data types") (thanks to Phil Hazelden @ChickenProp)
  • Work around GHC and cabal-install misfeature ".ghc.environment files" that could break brittany in unexpected and hard-to-understand ways
  • Stop removing empty lines before where keyword in a couple of cases
  • Fix functions with mixing prefix/infix style causing error (#234)
• Changes to layout:
  • Align usage of spaces for record update vs record construction (#126)
  • More indentation to import-hiding-paragraph (follow-up to #150 fix)
  • Record construction and update now are layouted in the same way (thanks to Evan Rutledge Borden @eborden)
  • Stop allowing single-line layout when there are comments between arguments (#214) (thanks to @matt-noonan)
• Various build-instructions and editor integrations

0.11.0.0 -- May 2018

• Support for ghc-8.4

• Implement inline-config e.g. "-- brittany --indent=4"

  respects the following comment forms as input:

  source comment                       affected target
  ======================================================
  "-- brittany CONFIG"                 whole module
  "-- brittany-next-binding CONFIG"    next binding
  "-- brittany-disable-next-binding"   next binding
  "-- brittany @ myExampleFunc CONFIG" `myExampleFunc`
  

  multiline-comments are supported too, although the specification must still be a single line. E.g.

  "{- brittany --columns 50 -}"

  CONFIG is either:

  1. one or more flags in the form of what brittany accepts on the commandline, e.g. "--columns 50", or
  2. one or more specifications in the form of what brittany accepts in its config files for the layouting config (a one-line yaml document), e.g. "{ lconfig_cols: 50 }"

• Implement IndentPolicyMultiple (thanks to Bryan Richter @chreekat) Restrict indentation amounts to n * indentAmount

• Implement --obfuscate that replaces non-keyword identifiers with random names

• Do not write files unless there are changes (don't update modtime) (--write-mode=inplace) (#93)

• Bugfixes:

  • Fix empty function constraints (() => IO ()) (#133)
  • Fix overflowing columns caused by aligning with surrounding lines for certain complex cases
  • Implement hacky workaround for type instances (-XTypeFamilies) (#89)

• Layouting changes:

  • On default settings, allow single-line module header module MyModule where when no exports
  • Fix one case of non-optimal layouting for if-then-else
  • Allow same-line let binding inside do-notation with IndentPolicyLeft/Multiple and indentAmount>=4

0.10.0.0 -- March 2018

• Implement module/exports/imports layouting (thanks to sniperrifle2004)
• Expose config paths/parsing functions (thanks to Alexey Raga)
• Bugfixes:
  • Fix layouting of NOINLINE pragma
  • Fix ticked type operator (e.g. ':-) losing tick (#125)
  • Fix alignment issue with cases involving operators (#65)
  • Fix comments in tuples being dropped (#37)
  • Fix comment placements with let-in (#110)
• Layouting changes:
  • Align arguments only if it is the same function being called (#128)
  • Do not use single-line layout when infix operator expression contains comments (#111)
• New layouting config items:
  • lconfig_importColumn/--import-col: column for import items
  • lconfig_importAsColumn/--import-as-col: column for the "as" name of a module
  • lconfig_reformatModulePreamble: controls module/export/import layouting (default True)
  • lconfig_allowSingleLineExportList: permit one-line module header, e.g. module Main (main) (default False)

0.9.0.1 -- February 2018

• Support TupleSections (thanks to Matthew Piziak)
• Bugfixes:
  • Fix Shebang handling with stdin input (#92)
  • Fix bug that effectively deleted strict/lazy matches (BangPatterns) (#116)
  • Fix infix operator whitespace bug (#101, #114)
  • Fix help command output and its layouting (#103)
  • Fix crash when config dir does not exist yet (#115)
• Layouting changes:
  • no space after opening non-tuple parenthesis even for multi-line case
  • use spaces around infix operators (applies to sections and in pattern matches)
  • Let-in is layouted more flexibly in fewer lines, if possible (thanks to Evan Borden)

0.9.0.0 -- December 2017

• Change default global config path (use XDG spec) Existing config should still be respected, so this should not break compatibility

• Support per-project config

• ! Slight rework of the commandline interface:

  • Support multiple inputs and outputs
  • Support inplace-transformation for multiple files via --write-mode=inplace

• Implement IndentPolicyLeft - the indentation mode that never adds more than the base indentation for nested parts (no hanging indentation)

  (thanks to Evan Borden)

• Fix bug that manifested in bad output for (top-level) template haskell splices

• Extension support:

  • RecordWildCards
  • RecursiveDo (was only partially supported previously)

• Layouting Bugfixes:

  • Properly reproduce parentheses around kind signatures
  • Fix issue around promoted lists (example good: '[ 'True] bad: '['True])
  • Trim text from exactprint used as workaround for unknown nodes (unsupported extension workaround)

• Layouting changes

  • Insert spaces around operator in sections

0.8.0.3 -- September 2017

• Support for ghc-8.2.1
• Bugfixes:
  • Fix quadratic performance issue
  • Fix special "where" indentation with indentAmount /= 2
  • Fix negative literals in patterns
  • Support type applications
• Accept -h for --help and improve help layouting (via butcher-1.1.0.2)
• Add continuous integration via travis (cabal, cabal-new, stack) (brittle due compilation time limit)
• Reduce compilation memory usage a bit

0.8.0.2 -- August 2017

• Add library interface, to be used by haskell-ide-engine.
• Publish to hackage.

0.8.0.1 -- May 2017

• Document the high-level design of the program
• Improve layouting for many different cases, too many to list here. Brittany still does only reformat top-level type signatures and bindings.
• Publish all dependencies on hackage; ghc-exactprint adaptions got merged upstream as well.
• Reduce the aggressiveness of horizontal alignment; this is configurable via the lconfig_alignmentLimit and lconfig_alignmentBreakOnMultiline values (config file only for now).
• (!) Breaking change to the config file format: The keys previously contained underscore (e.g. _econf_Werror) but do not anymore (econf_Werror). Add config version; also
• Move config value conf_errorHandling.econf_CPPMode to conf_preprocessor.ppconf_CPPMode.
• Cope with unhandled syntactical constructs more gracefully by falling back on the ghc-exactprint output; Brittany simply won't touch certain subexpressions instead of aborting. This is further configurable via the econf_omit_output_valid_check config value.
• Due to improvements to the butcher library: Accept --key=value on commandline (only --key value was supported previously).
• Improve testsuite setup: The tests.blt file contains many different testcases that allow quick addition - feel free to report bugs directly by making PRs with additions to that file.
• Release under the terms of the AGPLv3

0.7.1.0 -- 2016-09-06

• Support stack
• Fix --ghc-options handling
• Add commandline param to allow shortcut brittany Foo.hs meaning brittany -i Foo.hs

0.7.0.0 -- 2016-09-04

• First official alpha release
• Fix commandline flag parsing
• Implement/Improve horizontal aligning
• Various minor fixes and layouting improvements

0.6.0.0 -- 2016-08-12

• Add check that output is syntactically valid
• (!) Change config format, breaking previous configs
• Various layouting additions/imporements
• Various minor fixes

0.5.0.0 -- 2016-08-08

• Support --ghc-options
• Support user and local config files: Local config file is not mandatory anymore.

0.4.0.0 -- 2016-08-06

• Make comment handling a bit more clever
• Various layouting additions/imporements

0.3.0.0 -- 2016-08-04

• Various layouting additions/imporements

0.2.0.0 -- 2016-07-30

• Basic and partial implementation for expression/decl/statement/pattern layouting
• Prevent exponential behaviour using manual stablenames

0.1.0.0 -- 2016-06-05

• First working code for type signature layouting