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brittany/ChangeLog.md

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# Revision history for brittany
## 0.14.0.0 -- November 2021
* #357: Added support for GHC 9.0. Dropped support for all other versions of GHC.
* ab59e9acc3069551ac4132321b285d000f5f5691: Removed runtime dependency on `ghc-paths`.
* fa8365a7fa9372043d5a1018f2f7669ce3853edd: Started providing pre-built binaries for Linux, MacOS, and Windows.
* Many other changes to Brittany's internals and exposed Haskell interface, but (hopefully) no changes to its command-line interface.
## 0.13.1.2 -- May 2021
* #347: Allowed hspec 2.8. Thanks @felixonmars!
## 0.13.1.1 -- February 2021
* #333: Allowed random 1.2. Thanks @felixonmars!
* #334: Updated Arch install instructions. Thanks @ahstro!
* #343: Allowed ghc-exactprint 0.6.4. Thanks @maralorn!
## 0.13.1.0 -- December 2020
* #330: Started sorting imports. Thanks @expipiplus1!
## 0.13.0.0 -- December 2020
* #324: Added support for GHC 8.10.
* Dropped support for GHC 8.4, 8.2, and 8.0.
* Thanks @jneira, @bubba, @infinity0, and @expipiplus1!
## 0.12.2.0 -- November 2020
* #207: Fix newtype indent in associated type family.
* #231: Improve comments-affecting-layout behaviour for tuples.
* #259: Data declaration for newtype and records. Thanks @eborden!
* #263: Fix non-idempotent newlines with comment + where.
* #273: Error handling.
* #281: Fix moving comment in export list (haddock header).
* #286: Fix comments in instance/type instances.
* #287: Add support for pattern synonyms. Thanks @RaoulHC!
* #293: Expose main function as a module. Thanks @soareschen!
* #303: Readme: Supports 8.8. Thanks @andys8!
* #311: Allows aeson-1.5.*. Thanks @jkachmar!
* #313: Nondecreasing export list formatting. Thanks @expipiplus1!
## 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 instance`s (`-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
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