Run lint in latest python + update precommit (#2081)

[etc/vim.git] / README.md

diff --git a/README.md b/README.md
index 89ef4271d41db013d35ae3344ff0d60b8ecf0bc0..b19e6e5e0982630a2f35a54f5f2e11fe76ee5d70 100644 (file)
--- a/README.md
+++ b/README.md
@@ -49,8 +49,9 @@ _Contents:_ **[Installation and usage](#installation-and-usage)** |
 
 ### 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
 
@@ -135,11 +136,17 @@ Options:
                                   hg|\.mypy_cache|\.nox|\.tox|\.venv|\.svn|_bu
                                   ild|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
                                   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
@@ -151,7 +158,7 @@ Options:
 
   -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.
@@ -263,7 +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
-`--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.
@@ -286,6 +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.
 
+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.
 
@@ -313,25 +334,10 @@ expressions by Black. Use `[ ]` to denote a significant space character.
 line-length = 88
 target-version = ['py37']
 include = '\.pyi?$'
-exclude = '''
+extend-exclude = '''
 # A regex preceded with ^/ will apply only to files and directories
 # in the root of the project.
-^/(
-  (
-      \.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
-)
+^/foo.py  # exclude a file named foo.py in the root of the project (in addition to the defaults)
 '''
 ```
 
@@ -419,7 +425,7 @@ jobs:
       - uses: actions/setup-python@v2
       - uses: psf/black@stable
         with:
-          black_args: ". --check"
+          args: ". --check"
 ```
 
 ### Inputs
@@ -616,6 +622,7 @@ Multiple contributions by:
 - [Joseph Larson](mailto:larson.joseph@gmail.com)
 - [Josh Bode](mailto:joshbode@fastmail.com)
 - [Josh Holland](mailto:anowlcalledjosh@gmail.com)
+- [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)