Symlink docs/change_log.md to CHANGES.md, don't copy (#2146)

[etc/vim.git] / README.md

diff --git a/README.md b/README.md
index d4b239b7358494f35893774de0f816fc422fbad8..ed9f105f5aa60419f2000117b17f158ee8c8dc53 100644 (file)
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@
 <a href="https://github.com/psf/black/blob/master/LICENSE"><img alt="License: MIT" src="https://black.readthedocs.io/en/stable/_static/license.svg"></a>
 <a href="https://pypi.org/project/black/"><img alt="PyPI" src="https://img.shields.io/pypi/v/black"></a>
 <a href="https://pepy.tech/project/black"><img alt="Downloads" src="https://pepy.tech/badge/black"></a>
 <a href="https://github.com/psf/black/blob/master/LICENSE"><img alt="License: MIT" src="https://black.readthedocs.io/en/stable/_static/license.svg"></a>
 <a href="https://pypi.org/project/black/"><img alt="PyPI" src="https://img.shields.io/pypi/v/black"></a>
 <a href="https://pepy.tech/project/black"><img alt="Downloads" src="https://pepy.tech/badge/black"></a>

+<a href="https://anaconda.org/conda-forge/black/"><img alt="conda-forge" src="https://img.shields.io/conda/dn/conda-forge/black.svg?label=conda-forge"></a>

 <a href="https://github.com/psf/black"><img alt="Code style: black" src="https://img.shields.io/badge/code%20style-black-000000.svg"></a>
 </p>
 
 <a href="https://github.com/psf/black"><img alt="Code style: black" src="https://img.shields.io/badge/code%20style-black-000000.svg"></a>
 </p>
 


@@ -48,8 +49,9 @@ _Contents:_ **[Installation and usage](#installation-and-usage)** |
 
 ### Installation
 
 
 ### Installation
 

-_Black_ can be installed by running `pip install black`. It requires Python 3.6.0+ to
-run but you can reformat Python 2 code with it, too.
+_Black_ can be installed by running `pip install black`. It requires Python 3.6.2+ to
+run. If you want to format Python 2 code as well, install with
+`pip install black[python2]`.

 
 #### Install from GitHub
 
 
 #### Install from GitHub
 


@@ -85,7 +87,7 @@ Options:
   -l, --line-length INTEGER       How many characters per line to allow.
                                   [default: 88]
 
   -l, --line-length INTEGER       How many characters per line to allow.
                                   [default: 88]
 

-  -t, --target-version [py27|py33|py34|py35|py36|py37|py38]
+  -t, --target-version [py27|py33|py34|py35|py36|py37|py38|py39]

                                   Python versions that should be supported by
                                   Black's output. [default: per-file auto-
                                   detection]
                                   Python versions that should be supported by
                                   Black's output. [default: per-file auto-
                                   detection]


@@ -96,9 +98,13 @@ Options:
 
   -S, --skip-string-normalization
                                   Don't normalize string quotes or prefixes.
 
   -S, --skip-string-normalization
                                   Don't normalize string quotes or prefixes.

+  -C, --skip-magic-trailing-comma
+                                  Don't use trailing commas as a reason to
+                                  split lines.
+

   --check                         Don't write the files back, just return the
   --check                         Don't write the files back, just return the

-                                  status.  Return code 0 means nothing would
-                                  change.  Return code 1 means some files
+                                  status. Return code 0 means nothing would
+                                  change. Return code 1 means some files

                                   would be reformatted. Return code 123 means
                                   there was an internal error.
 
                                   would be reformatted. Return code 123 means
                                   there was an internal error.
 


@@ -113,26 +119,38 @@ Options:
 
   --include TEXT                  A regular expression that matches files and
                                   directories that should be included on
 
   --include TEXT                  A regular expression that matches files and
                                   directories that should be included on

-                                  recursive searches.  An empty value means
+                                  recursive searches. An empty value means

                                   all files are included regardless of the
                                   all files are included regardless of the

-                                  name.  Use forward slashes for directories
-                                  on all platforms (Windows, too).  Exclusions
+                                  name. Use forward slashes for directories
+                                  on all platforms (Windows, too). Exclusions

                                   are calculated first, inclusions later.
                                   [default: \.pyi?$]
 
   --exclude TEXT                  A regular expression that matches files and
                                   directories that should be excluded on
                                   are calculated first, inclusions later.
                                   [default: \.pyi?$]
 
   --exclude TEXT                  A regular expression that matches files and
                                   directories that should be excluded on

-                                  recursive searches.  An empty value means no
+                                  recursive searches. An empty value means no

                                   paths are excluded. Use forward slashes for
                                   directories on all platforms (Windows, too).
                                   Exclusions are calculated first, inclusions
                                   paths are excluded. Use forward slashes for
                                   directories on all platforms (Windows, too).
                                   Exclusions are calculated first, inclusions

-                                  later.  [default: /(\.eggs|\.git|\.hg|\.mypy
-                                  _cache|\.nox|\.tox|\.venv|\.svn|_build|buck-
-                                  out|build|dist)/]
+                                  later. [default: /(\.direnv|\.eggs|\.git|\.
+                                  hg|\.mypy_cache|\.nox|\.tox|\.venv|venv|\.sv
+                                  n|_build|buck-out|build|dist)/]
+
+  --extend-exclude TEXT           Like --exclude, but adds additional files
+                                  and directories on top of the excluded
+                                  ones (useful if you simply want to add to
+                                  the default).

 
   --force-exclude TEXT            Like --exclude, but files and directories
                                   matching this regex will be excluded even
 
   --force-exclude TEXT            Like --exclude, but files and directories
                                   matching this regex will be excluded even

-                                  when they are passed explicitly as arguments
+                                  when they are passed explicitly as
+                                  arguments.
+
+
+  --stdin-filename TEXT           The name of the file when passing it through
+                                  stdin. Useful to make sure Black will
+                                  respect --force-exclude option on some
+                                  editors that rely on using stdin.

 
   -q, --quiet                     Don't emit non-error messages to stderr.
                                   Errors are still emitted; silence those with
 
   -q, --quiet                     Don't emit non-error messages to stderr.
                                   Errors are still emitted; silence those with


@@ -140,7 +158,7 @@ Options:
 
   -v, --verbose                   Also emit messages to stderr about files
                                   that were not changed or were ignored due to
 
   -v, --verbose                   Also emit messages to stderr about files
                                   that were not changed or were ignored due to

-                                  --exclude=.
+                                  exclusion patterns.

 
   --version                       Show the version and exit.
   --config FILE                   Read configuration from FILE path.
 
   --version                       Show the version and exit.
   --config FILE                   Read configuration from FILE path.


@@ -163,7 +181,7 @@ about _Black_'s changes or will overwrite _Black_'s changes. A good example of t
 should be configured to neither warn about nor overwrite _Black_'s changes.
 
 Actual details on _Black_ compatible configurations for various tools can be found in
 should be configured to neither warn about nor overwrite _Black_'s changes.
 
 Actual details on _Black_ compatible configurations for various tools can be found in

-[compatible_configs](https://github.com/psf/black/blob/master/docs/compatible_configs.md).
+[compatible_configs](https://github.com/psf/black/blob/master/docs/compatible_configs.md#black-compatible-configurations).

 
 ### Migrating your code style without ruining git blame
 
 
 ### Migrating your code style without ruining git blame
 


@@ -211,12 +229,13 @@ know!)
 
 ### NOTE: This is a beta product
 
 
 ### NOTE: This is a beta product
 

-_Black_ is already [successfully used](#used-by) by many projects, small and big. It
-also sports a decent test suite. However, it is still very new. Things will probably be
-wonky for a while. This is made explicit by the "Beta" trove classifier, as well as by
-the "b" in the version number. What this means for you is that **until the formatter
-becomes stable, you should expect some formatting to change in the future**. That being
-said, no drastic stylistic changes are planned, mostly responses to bug reports.
+_Black_ is already [successfully used](https://github.com/psf/black#used-by) by many
+projects, small and big. It also sports a decent test suite. However, it is still very
+new. Things will probably be wonky for a while. This is made explicit by the "Beta"
+trove classifier, as well as by the "b" in the version number. What this means for you
+is that **until the formatter becomes stable, you should expect some formatting to
+change in the future**. That being said, no drastic stylistic changes are planned,
+mostly responses to bug reports.

 
 Also, as a temporary safety measure, _Black_ will check that the reformatted code still
 produces a valid AST that is equivalent to the original. This slows it down. If you're
 
 Also, as a temporary safety measure, _Black_ will check that the reformatted code still
 produces a valid AST that is equivalent to the original. This slows it down. If you're


@@ -227,8 +246,9 @@ feeling confident, use `--fast`.
 _Black_ is a PEP 8 compliant opinionated formatter. _Black_ reformats entire files in
 place. It is not configurable. It doesn't take previous formatting into account. Your
 main option of configuring _Black_ is that it doesn't reformat blocks that start with
 _Black_ is a PEP 8 compliant opinionated formatter. _Black_ reformats entire files in
 place. It is not configurable. It doesn't take previous formatting into account. Your
 main option of configuring _Black_ is that it doesn't reformat blocks that start with

-`# fmt: off` and end with `# fmt: on`. `# fmt: on/off` have to be on the same level of
-indentation. To learn more about _Black_'s opinions, to go
+`# fmt: off` and end with `# fmt: on`, or lines that ends with `# fmt: skip`. Pay
+attention that `# fmt: on/off` have to be on the same level of indentation. To learn
+more about _Black_'s opinions, to go

 [the_black_code_style](https://github.com/psf/black/blob/master/docs/the_black_code_style.md).
 
 Please refer to this document before submitting an issue. What seems like a bug might be
 [the_black_code_style](https://github.com/psf/black/blob/master/docs/the_black_code_style.md).
 
 Please refer to this document before submitting an issue. What seems like a bug might be


@@ -250,7 +270,7 @@ above. What seems like a bug might be intended behaviour.
 
 _Black_ is able to read project-specific default values for its command line options
 from a `pyproject.toml` file. This is especially useful for specifying custom
 
 _Black_ is able to read project-specific default values for its command line options
 from a `pyproject.toml` file. This is especially useful for specifying custom

-`--include` and `--exclude` patterns for your project.
+`--include` and `--exclude`/`--extend-exclude` patterns for your project.

 
 **Pro-tip**: If you're asking yourself "Do I need to configure anything?" the answer is
 "No". _Black_ is all about sensible defaults.
 
 **Pro-tip**: If you're asking yourself "Do I need to configure anything?" the answer is
 "No". _Black_ is all about sensible defaults.


@@ -273,6 +293,20 @@ parent directories. It stops looking when it finds the file, or a `.git` directo
 If you're formatting standard input, _Black_ will look for configuration starting from
 the current working directory.
 
 If you're formatting standard input, _Black_ will look for configuration starting from
 the current working directory.
 

+You can use a "global" configuration, stored in a specific location in your home
+directory. This will be used as a fallback configuration, that is, it will be used if
+and only if _Black_ doesn't find any configuration as mentioned above. Depending on your
+operating system, this configuration file should be stored as:
+
+- Windows: `~\.black`
+- Unix-like (Linux, MacOS, etc.): `$XDG_CONFIG_HOME/black` (`~/.config/black` if the
+  `XDG_CONFIG_HOME` environment variable is not set)
+
+Note that these are paths to the TOML file itself (meaning that they shouldn't be named
+as `pyproject.toml`), not directories where you store the configuration. Here, `~`
+refers to the path to your home directory. On Windows, this will be something like
+`C:\\Users\UserName`.
+

 You can also explicitly specify the path to a particular file that you want with
 `--config`. In this situation _Black_ will not look for any other file.
 
 You can also explicitly specify the path to a particular file that you want with
 `--config`. In this situation _Black_ will not look for any other file.
 


@@ -293,31 +327,17 @@ the equivalent of r-strings in Python. Multiline strings are treated as verbose
 expressions by Black. Use `[ ]` to denote a significant space character.
 
 <details>
 expressions by Black. Use `[ ]` to denote a significant space character.
 
 <details>

-<summary>Example `pyproject.toml`</summary>
+<summary>Example <code>pyproject.toml</code></summary>

 
 ```toml
 [tool.black]
 line-length = 88
 target-version = ['py37']
 include = '\.pyi?$'
 
 ```toml
 [tool.black]
 line-length = 88
 target-version = ['py37']
 include = '\.pyi?$'

-exclude = '''
-
-(
-  /(
-      \.eggs         # exclude a few common directories in the
-    | \.git          # root of the project
-    | \.hg
-    | \.mypy_cache
-    | \.tox
-    | \.venv
-    | _build
-    | buck-out
-    | build
-    | dist
-  )/
-  | foo.py           # also separately exclude a file named foo.py in
-                     # the root of the project
-)
+extend-exclude = '''
+# A regex preceded with ^/ will apply only to files and directories
+# in the root of the project.
+^/foo.py  # exclude a file named foo.py in the root of the project (in addition to the defaults)

 '''
 ```
 
 '''
 ```
 


@@ -370,7 +390,7 @@ Use [pre-commit](https://pre-commit.com/). Once you
 ```yaml
 repos:
   - repo: https://github.com/psf/black
 ```yaml
 repos:
   - repo: https://github.com/psf/black

-    rev: 19.10b0 # Replace by any tag/version: https://github.com/psf/black/tags
+    rev: 20.8b1 # Replace by any tag/version: https://github.com/psf/black/tags

     hooks:
       - id: black
         language_version: python3 # Should be a command that runs python3.6+
     hooks:
       - id: black
         language_version: python3 # Should be a command that runs python3.6+


@@ -404,8 +424,16 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
       - uses: psf/black@stable
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
       - uses: psf/black@stable

+        with:
+          args: ". --check"

 ```
 
 ```
 

+### Inputs
+
+#### `black_args`
+
+**optional**: Black input arguments. Defaults to `. --check --diff`.
+

 ## Ignoring unmodified files
 
 _Black_ remembers files it has already formatted, unless the `--diff` flag is used or
 ## Ignoring unmodified files
 
 _Black_ remembers files it has already formatted, unless the `--diff` flag is used or


@@ -433,7 +461,7 @@ then write the above files to `.cache/black/<version>/`.
 The following notable open-source projects trust _Black_ with enforcing a consistent
 code style: pytest, tox, Pyramid, Django Channels, Hypothesis, attrs, SQLAlchemy,
 Poetry, PyPA applications (Warehouse, Bandersnatch, Pipenv, virtualenv), pandas, Pillow,
 The following notable open-source projects trust _Black_ with enforcing a consistent
 code style: pytest, tox, Pyramid, Django Channels, Hypothesis, attrs, SQLAlchemy,
 Poetry, PyPA applications (Warehouse, Bandersnatch, Pipenv, virtualenv), pandas, Pillow,

-every Datadog Agent Integration, Home Assistant.
+every Datadog Agent Integration, Home Assistant, Zulip.

 
 The following organizations use _Black_: Facebook, Dropbox, Mozilla, Quora.
 
 
 The following organizations use _Black_: Facebook, Dropbox, Mozilla, Quora.
 


@@ -464,7 +492,7 @@ Twisted and CPython:
 
 Use the badge in your project's README.md:
 
 
 Use the badge in your project's README.md:
 

-```markdown
+```md

 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 ```
 
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 ```
 


@@ -548,6 +576,7 @@ Multiple contributions by:
 - [Christian Clauss](mailto:cclauss@bluewin.ch)
 - [Christian Heimes](mailto:christian@python.org)
 - [Chuck Wooters](mailto:chuck.wooters@microsoft.com)
 - [Christian Clauss](mailto:cclauss@bluewin.ch)
 - [Christian Heimes](mailto:christian@python.org)
 - [Chuck Wooters](mailto:chuck.wooters@microsoft.com)

+- [Chris Rose](mailto:offline@offby1.net)

 - Codey Oxley
 - [Cong](mailto:congusbongus@gmail.com)
 - [Cooper Ry Lees](mailto:me@cooperlees.com)
 - Codey Oxley
 - [Cong](mailto:congusbongus@gmail.com)
 - [Cooper Ry Lees](mailto:me@cooperlees.com)


@@ -571,6 +600,7 @@ Multiple contributions by:
 - [Gregory P. Smith](mailto:greg@krypto.org)
 - Gustavo Camargo
 - hauntsaninja
 - [Gregory P. Smith](mailto:greg@krypto.org)
 - Gustavo Camargo
 - hauntsaninja

+- [Hadi Alqattan](mailto:alqattanhadizaki@gmail.com)

 - [Heaford](mailto:dan@heaford.com)
 - [Hugo Barrera](mailto::hugo@barrera.io)
 - Hugo van Kemenade
 - [Heaford](mailto:dan@heaford.com)
 - [Hugo Barrera](mailto::hugo@barrera.io)
 - Hugo van Kemenade


@@ -592,6 +622,7 @@ Multiple contributions by:
 - [Joseph Larson](mailto:larson.joseph@gmail.com)
 - [Josh Bode](mailto:joshbode@fastmail.com)
 - [Josh Holland](mailto:anowlcalledjosh@gmail.com)
 - [Joseph Larson](mailto:larson.joseph@gmail.com)
 - [Josh Bode](mailto:joshbode@fastmail.com)
 - [Josh Holland](mailto:anowlcalledjosh@gmail.com)

+- [Joshua Cannon](mailto:joshdcannon@gmail.com)

 - [José Padilla](mailto:jpadilla@webapplicate.com)
 - [Juan Luis Cano Rodríguez](mailto:hello@juanlu.space)
 - [kaiix](mailto:kvn.hou@gmail.com)
 - [José Padilla](mailto:jpadilla@webapplicate.com)
 - [Juan Luis Cano Rodríguez](mailto:hello@juanlu.space)
 - [kaiix](mailto:kvn.hou@gmail.com)


@@ -624,7 +655,7 @@ Multiple contributions by:
 - [Miroslav Shubernetskiy](mailto:miroslav@miki725.com)
 - MomIsBestFriend
 - [Nathan Goldbaum](mailto:ngoldbau@illinois.edu)
 - [Miroslav Shubernetskiy](mailto:miroslav@miki725.com)
 - MomIsBestFriend
 - [Nathan Goldbaum](mailto:ngoldbau@illinois.edu)

-- [Nathan Hunt](mailtoneighthan.hunt@gmail.com)
+- [Nathan Hunt](mailto:neighthan.hunt@gmail.com)

 - [Neraste](mailto:neraste.herr10@gmail.com)
 - [Nikolaus Waxweiler](mailto:madigens@gmail.com)
 - [Ofek Lev](mailto:ofekmeister@gmail.com)
 - [Neraste](mailto:neraste.herr10@gmail.com)
 - [Nikolaus Waxweiler](mailto:madigens@gmail.com)
 - [Ofek Lev](mailto:ofekmeister@gmail.com)


@@ -634,6 +665,7 @@ Multiple contributions by:
 - [Paul Ganssle](mailto:p.ganssle@gmail.com)
 - [Paul Meinhardt](mailto:mnhrdt@gmail.com)
 - [Peter Bengtsson](mailto:mail@peterbe.com)
 - [Paul Ganssle](mailto:p.ganssle@gmail.com)
 - [Paul Meinhardt](mailto:mnhrdt@gmail.com)
 - [Peter Bengtsson](mailto:mail@peterbe.com)

+- [Peter Grayson](mailto:pete@jpgrayson.net)

 - [Peter Stensmyr](mailto:peter.stensmyr@gmail.com)
 - pmacosta
 - [Quentin Pradet](mailto:quentin@pradet.me)
 - [Peter Stensmyr](mailto:peter.stensmyr@gmail.com)
 - pmacosta
 - [Quentin Pradet](mailto:quentin@pradet.me)


@@ -683,3 +715,4 @@ Multiple contributions by:
 - Yazdan
 - [Yngve Høiseth](mailto:yngve@hoiseth.net)
 - [Yurii Karabas](mailto:1998uriyyo@gmail.com)
 - Yazdan
 - [Yngve Høiseth](mailto:yngve@hoiseth.net)
 - [Yurii Karabas](mailto:1998uriyyo@gmail.com)

+- [Zac Hatfield-Dodds](mailto:zac@zhd.dev)