All patches and comments are welcome. Please squash your changes to logical
commits before using git-format-patch and git-send-email to
patches@git.madduck.net.
If you'd read over the Git project's submission guidelines and adhered to them,
I'd be especially grateful.
7 - `Black` now respects `--skip-string-normalization` when normalizing multiline
8 docstring quotes (#1637)
10 - `Black` no longer removes all empty lines between non-function code and decorators
11 when formatting typing stubs. Now `Black` enforces a single empty line. (#1646)
13 - `Black` no longer adds an incorrect space after a parenthesized assignment expression
14 in if/while statements (#1655)
16 - fixed a crash when PWD=/ on POSIX (#1631)
18 - fixed "I/O operation on closed file" when using --diff (#1664)
20 - Prevent coloured diff output being interleaved with multiple files (#1673)
22 - Added support for PEP 614 relaxed decorator syntax on python 3.9 (#1711)
24 - use lowercase hex strings (#1692)
28 - Self-contained native _Black_ binaries are now provided for releases via GitHub
35 - explicitly depend on Click 7.1.2 or newer as `Black` no longer works with versions
42 - re-implemented support for explicit trailing commas: now it works consistently within
43 any bracket pair, including nested structures (#1288 and duplicates)
45 - `Black` now reindents docstrings when reindenting code around it (#1053)
47 - `Black` now shows colored diffs (#1266)
49 - `Black` is now packaged using 'py3' tagged wheels (#1388)
51 - `Black` now supports Python 3.8 code, e.g. star expressions in return statements
54 - `Black` no longer normalizes capital R-string prefixes as those have a
55 community-accepted meaning (#1244)
57 - `Black` now uses exit code 2 when specified configuration file doesn't exit (#1361)
59 - `Black` now works on AWS Lambda (#1141)
61 - added `--force-exclude` argument (#1032)
63 - removed deprecated `--py36` option (#1236)
65 - fixed `--diff` output when EOF is encountered (#526)
67 - fixed `# fmt: off` handling around decorators (#560)
69 - fixed unstable formatting with some `# type: ignore` comments (#1113)
71 - fixed invalid removal on organizing brackets followed by indexing (#1575)
73 - introduced `black-primer`, a CI tool that allows us to run regression tests against
74 existing open source users of Black (#1402)
76 - introduced property-based fuzzing to our test suite based on Hypothesis and
79 - implemented experimental and disabled by default long string rewrapping (#1132),
80 hidden under a `--experimental-string-processing` flag while it's being worked on;
81 this is an undocumented and unsupported feature, you lose Internet points for
82 depending on it (#1609)
86 - prefer virtualenv packages over global packages (#1383)
90 - added support for PEP 572 assignment expressions (#711)
92 - added support for PEP 570 positional-only arguments (#943)
94 - added support for async generators (#593)
96 - added support for pre-splitting collections by putting an explicit trailing comma
99 - added `black -c` as a way to format code passed from the command line (#761)
101 - --safe now works with Python 2 code (#840)
103 - fixed grammar selection for Python 2-specific code (#765)
105 - fixed feature detection for trailing commas in function definitions and call sites
108 - `# fmt: off`/`# fmt: on` comment pairs placed multiple times within the same block of
109 code now behave correctly (#1005)
111 - _Black_ no longer crashes on Windows machines with more than 61 cores (#838)
113 - _Black_ no longer crashes on standalone comments prepended with a backslash (#767)
115 - _Black_ no longer crashes on `from` ... `import` blocks with comments (#829)
117 - _Black_ no longer crashes on Python 3.7 on some platform configurations (#494)
119 - _Black_ no longer fails on comments in from-imports (#671)
121 - _Black_ no longer fails when the file starts with a backslash (#922)
123 - _Black_ no longer merges regular comments with type comments (#1027)
125 - _Black_ no longer splits long lines that contain type comments (#997)
127 - removed unnecessary parentheses around `yield` expressions (#834)
129 - added parentheses around long tuples in unpacking assignments (#832)
131 - added parentheses around complex powers when they are prefixed by a unary operator
134 - fixed bug that led _Black_ format some code with a line length target of 1 (#762)
136 - _Black_ no longer introduces quotes in f-string subexpressions on string boundaries
139 - if _Black_ puts parenthesis around a single expression, it moves comments to the
140 wrapped expression instead of after the brackets (#872)
142 - `blackd` now returns the version of _Black_ in the response headers (#1013)
144 - `blackd` can now output the diff of formats on source code when the `X-Diff` header is
149 - new option `--target-version` to control which Python versions _Black_-formatted code
152 - deprecated `--py36` (use `--target-version=py36` instead) (#724)
154 - _Black_ no longer normalizes numeric literals to include `_` separators (#696)
156 - long `del` statements are now split into multiple lines (#698)
158 - type comments are no longer mangled in function signatures
160 - improved performance of formatting deeply nested data structures (#509)
162 - _Black_ now properly formats multiple files in parallel on Windows (#632)
164 - _Black_ now creates cache files atomically which allows it to be used in parallel
165 pipelines (like `xargs -P8`) (#673)
167 - _Black_ now correctly indents comments in files that were previously formatted with
170 - `blackd` now supports CORS (#622)
174 - numeric literals are now formatted by _Black_ (#452, #461, #464, #469):
176 - numeric literals are normalized to include `_` separators on Python 3.6+ code
178 - added `--skip-numeric-underscore-normalization` to disable the above behavior and
179 leave numeric underscores as they were in the input
181 - code with `_` in numeric literals is recognized as Python 3.6+
183 - most letters in numeric literals are lowercased (e.g., in `1e10`, `0x01`)
185 - hexadecimal digits are always uppercased (e.g. `0xBADC0DE`)
187 - added `blackd`, see [its documentation](#blackd) for more info (#349)
189 - adjacent string literals are now correctly split into multiple lines (#463)
191 - trailing comma is now added to single imports that don't fit on a line (#250)
193 - cache is now populated when `--check` is successful for a file which speeds up
194 consecutive checks of properly formatted unmodified files (#448)
196 - whitespace at the beginning of the file is now removed (#399)
198 - fixed mangling [pweave](http://mpastell.com/pweave/) and
199 [Spyder IDE](https://www.spyder-ide.org/) special comments (#532)
201 - fixed unstable formatting when unpacking big tuples (#267)
203 - fixed parsing of `__future__` imports with renames (#389)
205 - fixed scope of `# fmt: off` when directly preceding `yield` and other nodes (#385)
207 - fixed formatting of lambda expressions with default arguments (#468)
209 - fixed `async for` statements: _Black_ no longer breaks them into separate lines (#372)
211 - note: the Vim plugin stopped registering `,=` as a default chord as it turned out to
216 - hotfix: don't freeze when multiple comments directly precede `# fmt: off` (#371)
220 - typing stub files (`.pyi`) now have blank lines added after constants (#340)
222 - `# fmt: off` and `# fmt: on` are now much more dependable:
224 - they now work also within bracket pairs (#329)
226 - they now correctly work across function/class boundaries (#335)
228 - they now work when an indentation block starts with empty lines or misaligned
231 - made Click not fail on invalid environments; note that Click is right but the
232 likelihood we'll need to access non-ASCII file paths when dealing with Python source
235 - fixed improper formatting of f-strings with quotes inside interpolated expressions
238 - fixed unnecessary slowdown when long list literals where found in a file
240 - fixed unnecessary slowdown on AST nodes with very many siblings
242 - fixed cannibalizing backslashes during string normalization
244 - fixed a crash due to symbolic links pointing outside of the project directory (#338)
248 - added `--config` (#65)
250 - added `-h` equivalent to `--help` (#316)
252 - fixed improper unmodified file caching when `-S` was used
254 - fixed extra space in string unpacking (#305)
256 - fixed formatting of empty triple quoted strings (#313)
258 - fixed unnecessary slowdown in comment placement calculation on lines without comments
262 - hotfix: don't output human-facing information on stdout (#299)
264 - hotfix: don't output cake emoji on non-zero return code (#300)
268 - added `--include` and `--exclude` (#270)
270 - added `--skip-string-normalization` (#118)
272 - added `--verbose` (#283)
274 - the header output in `--diff` now actually conforms to the unified diff spec
276 - fixed long trivial assignments being wrapped in unnecessary parentheses (#273)
278 - fixed unnecessary parentheses when a line contained multiline strings (#232)
280 - fixed stdin handling not working correctly if an old version of Click was used (#276)
282 - _Black_ now preserves line endings when formatting a file in place (#258)
286 - added `--pyi` (#249)
288 - added `--py36` (#249)
290 - Python grammar pickle caches are stored with the formatting caches, making _Black_
291 work in environments where site-packages is not user-writable (#192)
293 - _Black_ now enforces a PEP 257 empty line after a class-level docstring (and/or
294 fields) and the first method
296 - fixed invalid code produced when standalone comments were present in a trailer that
297 was omitted from line splitting on a large expression (#237)
299 - fixed optional parentheses being removed within `# fmt: off` sections (#224)
301 - fixed invalid code produced when stars in very long imports were incorrectly wrapped
302 in optional parentheses (#234)
304 - fixed unstable formatting when inline comments were moved around in a trailer that was
305 omitted from line splitting on a large expression (#238)
307 - fixed extra empty line between a class declaration and the first method if no class
308 docstring or fields are present (#219)
310 - fixed extra empty line between a function signature and an inner function or inner
315 - call chains are now formatted according to the
316 [fluent interfaces](https://en.wikipedia.org/wiki/Fluent_interface) style (#67)
318 - data structure literals (tuples, lists, dictionaries, and sets) are now also always
319 exploded like imports when they don't fit in a single line (#152)
321 - slices are now formatted according to PEP 8 (#178)
323 - parentheses are now also managed automatically on the right-hand side of assignments
324 and return statements (#140)
326 - math operators now use their respective priorities for delimiting multiline
329 - optional parentheses are now omitted on expressions that start or end with a bracket
330 and only contain a single operator (#177)
332 - empty parentheses in a class definition are now removed (#145, #180)
334 - string prefixes are now standardized to lowercase and `u` is removed on Python 3.6+
335 only code and Python 2.7+ code with the `unicode_literals` future import (#188, #198,
338 - typing stub files (`.pyi`) are now formatted in a style that is consistent with PEP
341 - progress when reformatting many files is now reported incrementally
343 - fixed trailers (content with brackets) being unnecessarily exploded into their own
344 lines after a dedented closing bracket (#119)
346 - fixed an invalid trailing comma sometimes left in imports (#185)
348 - fixed non-deterministic formatting when multiple pairs of removable parentheses were
351 - fixed multiline strings being unnecessarily wrapped in optional parentheses in long
354 - fixed not splitting long from-imports with only a single name
356 - fixed Python 3.6+ file discovery by also looking at function calls with unpacking.
357 This fixed non-deterministic formatting if trailing commas where used both in function
358 signatures with stars and function calls with stars but the former would be
359 reformatted to a single line.
361 - fixed crash on dealing with optional parentheses (#193)
363 - fixed "is", "is not", "in", and "not in" not considered operators for splitting
366 - fixed crash when dead symlinks where encountered
370 - don't populate the cache on `--check` (#175)
374 - added a "cache"; files already reformatted that haven't changed on disk won't be
375 reformatted again (#109)
377 - `--check` and `--diff` are no longer mutually exclusive (#149)
379 - generalized star expression handling, including double stars; this fixes
380 multiplication making expressions "unsafe" for trailing commas (#132)
382 - _Black_ no longer enforces putting empty lines behind control flow statements (#90)
384 - _Black_ now splits imports like "Mode 3 + trailing comma" of isort (#127)
386 - fixed comment indentation when a standalone comment closes a block (#16, #32)
388 - fixed standalone comments receiving extra empty lines if immediately preceding a
389 class, def, or decorator (#56, #154)
391 - fixed `--diff` not showing entire path (#130)
393 - fixed parsing of complex expressions after star and double stars in function calls
396 - fixed invalid splitting on comma in lambda arguments (#133)
398 - fixed missing splits of ternary expressions (#141)
402 - fixed parsing of unaligned standalone comments (#99, #112)
404 - fixed placement of dictionary unpacking inside dictionary literals (#111)
406 - Vim plugin now works on Windows, too
408 - fixed unstable formatting when encountering unnecessarily escaped quotes in a string
413 - added `--quiet` (#78)
415 - added automatic parentheses management (#4)
417 - added [pre-commit](https://pre-commit.com) integration (#103, #104)
419 - fixed reporting on `--check` with multiple files (#101, #102)
421 - fixed removing backslash escapes from raw strings (#100, #105)
425 - added `--diff` (#87)
427 - add line breaks before all delimiters, except in cases like commas, to better comply
430 - standardize string literals to use double quotes (almost) everywhere (#75)
432 - fixed handling of standalone comments within nested bracketed expressions; _Black_
433 will no longer produce super long lines or put all standalone comments at the end of
436 - fixed 18.3a4 regression: don't crash and burn on empty lines with trailing whitespace
439 - fixed 18.3a4 regression: `# yapf: disable` usage as trailing comment would cause
440 _Black_ to not emit the rest of the file (#95)
442 - when CTRL+C is pressed while formatting many files, _Black_ no longer freaks out with
443 a flurry of asyncio-related exceptions
445 - only allow up to two empty lines on module level and only single empty lines within
450 - `# fmt: off` and `# fmt: on` are implemented (#5)
452 - automatic detection of deprecated Python 2 forms of print statements and exec
453 statements in the formatted file (#49)
455 - use proper spaces for complex expressions in default values of typed function
458 - only return exit code 1 when --check is used (#50)
460 - don't remove single trailing commas from square bracket indexing (#59)
462 - don't omit whitespace if the previous factor leaf wasn't a math operator (#55)
464 - omit extra space in kwarg unpacking if it's the first argument (#46)
466 - omit extra space in
467 [Sphinx auto-attribute comments](http://www.sphinx-doc.org/en/stable/ext/autodoc.html#directive-autoattribute)
472 - don't remove single empty lines outside of bracketed expressions (#19)
474 - added ability to pipe formatting from stdin to stdin (#25)
476 - restored ability to format code with legacy usage of `async` as a name (#20, #42)
478 - even better handling of numpy-style array indexing (#33, again)
482 - changed positioning of binary operators to occur at beginning of lines instead of at
484 [a recent change to PEP 8](https://github.com/python/peps/commit/c59c4376ad233a62ca4b3a6060c81368bd21e85b)
487 - ignore empty bracket pairs while splitting. This avoids very weirdly looking
488 formattings (#34, #35)
490 - remove a trailing comma if there is a single argument to a call
492 - if top level functions were separated by a comment, don't put four empty lines after
495 - fixed unstable formatting of newlines with imports
497 - fixed unintentional folding of post scriptum standalone comments into last statement
498 if it was a simple statement (#18, #28)
500 - fixed missing space in numpy-style array indexing (#33)
502 - fixed spurious space after star-based unary expressions (#31)
508 - only put trailing commas in function signatures and calls if it's safe to do so. If
509 the file is Python 3.6+ it's always safe, otherwise only safe if there are no `*args`
510 or `**kwargs` used in the signature or call. (#8)
512 - fixed invalid spacing of dots in relative imports (#6, #13)
514 - fixed invalid splitting after comma on unpacked variables in for-loops (#23)
516 - fixed spurious space in parenthesized set expressions (#7)
518 - fixed spurious space after opening parentheses and in default arguments (#14, #17)
520 - fixed spurious space after unary operators when the operand was a complex expression
525 - first published version, Happy 🍰 Day 2018!
529 - date-versioned (see: https://calver.org/)