Add CORS support to blackd (#627)

[etc/vim.git] / README.md

diff --git a/README.md b/README.md
index 244f60d776c06df92ac15f02bc3dc4ecf43471f6..7be809371ede219d5d093e408913e75228801287 100644 (file)
--- a/README.md
+++ b/README.md
@@ -81,6 +81,8 @@ Options:
                               source on standard input).
   -S, --skip-string-normalization
                               Don't normalize string quotes or prefixes.
                               source on standard input).
   -S, --skip-string-normalization
                               Don't normalize string quotes or prefixes.

+  -N, --skip-numeric-underscore-normalization
+                              Don't normalize underscores in numeric literals.

   --check                     Don't write the files back, just return the
                               status.  Return code 0 means nothing would
                               change.  Return code 1 means some files would be
   --check                     Don't write the files back, just return the
                               status.  Return code 0 means nothing would
                               change.  Return code 1 means some files would be


@@ -98,8 +100,8 @@ Options:
                               directories that should be excluded on
                               recursive searches. On Windows, use forward
                               slashes for directories.  [default:
                               directories that should be excluded on
                               recursive searches. On Windows, use forward
                               slashes for directories.  [default:

-                              build/|buck-out/|dist/|_build/|\.git/|\.hg/|
-                              \.mypy_cache/|\.tox/|\.venv/]
+                              build/|buck-out/|dist/|_build/|\.eggs/|\.git/|
+                              \.hg/|\.mypy_cache/|\.nox/|\.tox/|\.venv/]

   -q, --quiet                 Don't emit non-error messages to stderr. Errors
                               are still emitted, silence those with
                               2>/dev/null.
   -q, --quiet                 Don't emit non-error messages to stderr. Errors
                               are still emitted, silence those with
                               2>/dev/null.


@@ -141,7 +143,8 @@ original.  This slows it down.  If you're feeling confident, use
 
 *Black* reformats entire files in place.  It is not configurable.  It
 doesn't take previous formatting into account.  It doesn't reformat
 
 *Black* reformats entire files in place.  It is not configurable.  It
 doesn't take previous formatting into account.  It doesn't reformat

-blocks that start with `# fmt: off` and end with `# fmt: on`.  It also
+blocks that start with `# fmt: off` and end with `# fmt: on`. `# fmt: on/off`
+have to be on the same level of indentation. It also

 recognizes [YAPF](https://github.com/google/yapf)'s block comments to
 the same effect, as a courtesy for straddling code.
 
 recognizes [YAPF](https://github.com/google/yapf)'s block comments to
 the same effect, as a courtesy for straddling code.
 


@@ -235,13 +238,13 @@ the following configuration.
 multi_line_output=3
 include_trailing_comma=True
 force_grid_wrap=0
 multi_line_output=3
 include_trailing_comma=True
 force_grid_wrap=0

-combine_as_imports=True
+use_parentheses=True

 line_length=88
 ```
 
 The equivalent command line is:
 ```
 line_length=88
 ```
 
 The equivalent command line is:
 ```

-$ isort --multi-line=3 --trailing-comma --force-grid-wrap=0 --combine-as --line-width=88 [ file.py ]
+$ isort --multi-line=3 --trailing-comma --force-grid-wrap=0 --use-parentheses --line-width=88 [ file.py ]

 ```
 </details>
 
 ```
 </details>
 


@@ -277,7 +280,8 @@ ignore = E501
 ```
 
 You'll find *Black*'s own .flake8 config file is configured like this.
 ```
 
 You'll find *Black*'s own .flake8 config file is configured like this.

-If you're curious about the reasoning behind B950, Bugbear's documentation
+If you're curious about the reasoning behind B950, 
+[Bugbear's documentation](https://github.com/PyCQA/flake8-bugbear#opinionated-warnings)

 explains it.  The tl;dr is "it's like highway speed limits, we won't
 bother you if you overdo it by a few km/h".
 
 explains it.  The tl;dr is "it's like highway speed limits, we won't
 bother you if you overdo it by a few km/h".
 


@@ -355,8 +359,8 @@ string literals that ended up on the same line (see
 [#26](https://github.com/ambv/black/issues/26) for details).
 
 Why settle on double quotes?  They anticipate apostrophes in English
 [#26](https://github.com/ambv/black/issues/26) for details).
 
 Why settle on double quotes?  They anticipate apostrophes in English

-text.  They match the docstring standard described in PEP 257.  An
-empty string in double quotes (`""`) is impossible to confuse with
+text.  They match the docstring standard described in [PEP 257](https://www.python.org/dev/peps/pep-0257/#what-is-a-docstring).
+An empty string in double quotes (`""`) is impossible to confuse with

 a one double-quote regardless of fonts and syntax highlighting used.
 On top of this, double quotes for strings are consistent with C which
 Python interacts a lot with.
 a one double-quote regardless of fonts and syntax highlighting used.
 On top of this, double quotes for strings are consistent with C which
 Python interacts a lot with.


@@ -374,12 +378,18 @@ an adoption helper, avoid using this for new projects.
 
 ### Numeric literals
 
 
 ### Numeric literals
 

-*Black* standardizes most numeric literals to use lowercase letters: `0xab`
+*Black* standardizes most numeric literals to use lowercase letters for the
+syntactic parts and uppercase letters for the digits themselves: `0xAB`

 instead of `0XAB` and `1e10` instead of `1E10`. Python 2 long literals are
 styled as `2L` instead of `2l` to avoid confusion between `l` and `1`. In
 Python 3.6+, *Black* adds underscores to long numeric literals to aid
 readability: `100000000` becomes `100_000_000`.
 
 instead of `0XAB` and `1e10` instead of `1E10`. Python 2 long literals are
 styled as `2L` instead of `2l` to avoid confusion between `l` and `1`. In
 Python 3.6+, *Black* adds underscores to long numeric literals to aid
 readability: `100000000` becomes `100_000_000`.
 

+For regions where numerals are grouped differently (like [India](https://en.wikipedia.org/wiki/Indian_numbering_system)
+and [China](https://en.wikipedia.org/wiki/Chinese_numerals#Whole_numbers)),
+the `-N` or `--skip-numeric-underscore-normalization` command line option
+makes *Black* preserve underscores in numeric literals.
+

 ### Line breaks & binary operators
 
 *Black* will break a line before a binary operator when splitting a block
 ### Line breaks & binary operators
 
 *Black* will break a line before a binary operator when splitting a block


@@ -538,6 +548,8 @@ other file.
 If you're running with `--verbose`, you will see a blue message if
 a file was found and used.
 
 If you're running with `--verbose`, you will see a blue message if
 a file was found and used.
 

+Please note `blackd` will not use `pyproject.toml` configuration.
+

 
 ### Configuration format
 
 
 ### Configuration format
 


@@ -561,7 +573,8 @@ py36 = true
 include = '\.pyi?$'
 exclude = '''
 /(
 include = '\.pyi?$'
 exclude = '''
 /(

-    \.git
+    \.eggs
+  | \.git

   | \.hg
   | \.mypy_cache
   | \.tox
   | \.hg
   | \.mypy_cache
   | \.tox


@@ -663,7 +676,7 @@ Configuration:
 To install with [vim-plug](https://github.com/junegunn/vim-plug):
 
 ```
 To install with [vim-plug](https://github.com/junegunn/vim-plug):
 
 ```

-Plug 'ambv/black',
+Plug 'ambv/black'

 ```
 
 or with [Vundle](https://github.com/VundleVim/Vundle.vim):
 ```
 
 or with [Vundle](https://github.com/VundleVim/Vundle.vim):


@@ -714,7 +727,7 @@ Use the [Python extension](https://marketplace.visualstudio.com/items?itemName=m
 Use [sublack plugin](https://github.com/jgirardet/sublack).
 
 
 Use [sublack plugin](https://github.com/jgirardet/sublack).
 
 

-### IPython Notebook Magic
+### Jupyter Notebook Magic

 
 Use [blackcellmagic](https://github.com/csurfer/blackcellmagic).
 
 
 Use [blackcellmagic](https://github.com/csurfer/blackcellmagic).
 


@@ -780,14 +793,14 @@ Options:
 ### Protocol
 
 `blackd` only accepts `POST` requests at the `/` path. The body of the request
 ### Protocol
 
 `blackd` only accepts `POST` requests at the `/` path. The body of the request

-should contain the python source code to be formatted, encoded 
+should contain the python source code to be formatted, encoded

 according to the `charset` field in the `Content-Type` request header. If no
 `charset` is specified, `blackd` assumes `UTF-8`.
 
 There are a few HTTP headers that control how the source is formatted. These
 correspond to command line flags for *Black*. There is one exception to this:
 `X-Protocol-Version` which if present, should have the value `1`, otherwise the
 according to the `charset` field in the `Content-Type` request header. If no
 `charset` is specified, `blackd` assumes `UTF-8`.
 
 There are a few HTTP headers that control how the source is formatted. These
 correspond to command line flags for *Black*. There is one exception to this:
 `X-Protocol-Version` which if present, should have the value `1`, otherwise the

-request is rejected with `HTTP 501` (Not Implemented). 
+request is rejected with `HTTP 501` (Not Implemented).

 
 The headers controlling how code is formatted are:
 
 
 The headers controlling how code is formatted are:
 


@@ -795,6 +808,8 @@ The headers controlling how code is formatted are:
  - `X-Skip-String-Normalization`: corresponds to the `--skip-string-normalization`
     command line flag. If present and its value is not the empty string, no string
     normalization will be performed.
  - `X-Skip-String-Normalization`: corresponds to the `--skip-string-normalization`
     command line flag. If present and its value is not the empty string, no string
     normalization will be performed.

+ - `X-Skip-Numeric-Underscore-Normalization`: corresponds to the
+    `--skip-numeric-underscore-normalization` command line flag.

  - `X-Fast-Or-Safe`: if set to `fast`, `blackd` will act as *Black* does when
     passed the `--fast` command line flag.
  - `X-Python-Variant`: if set to `pyi`, `blackd` will act as *Black* does when
  - `X-Fast-Or-Safe`: if set to `fast`, `blackd` will act as *Black* does when
     passed the `--fast` command line flag.
  - `X-Python-Variant`: if set to `pyi`, `blackd` will act as *Black* does when


@@ -925,18 +940,28 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md).
 
   * numeric literals are normalized to include `_` separators on Python 3.6+ code
 
 
   * numeric literals are normalized to include `_` separators on Python 3.6+ code
 

+  * added `--skip-numeric-underscore-normalization` to disable the above behavior and
+    leave numeric underscores as they were in the input
+

   * code with `_` in numeric literals is recognized as Python 3.6+
 
   * code with `_` in numeric literals is recognized as Python 3.6+
 

-  * most letters in numeric literals are lowercased (e.g., in `1e10` or `0xab`)
+  * most letters in numeric literals are lowercased (e.g., in `1e10`, `0x01`)
+
+  * hexadecimal digits are always uppercased (e.g. `0xBADC0DE`)

 
 * added `blackd`, see [its documentation](#blackd) for more info (#349)
 
 * adjacent string literals are now correctly split into multiple lines (#463)
 
 
 * added `blackd`, see [its documentation](#blackd) for more info (#349)
 
 * adjacent string literals are now correctly split into multiple lines (#463)
 

+* trailing comma is now added to single imports that don't fit on a line (#250)
+

 * cache is now populated when `--check` is successful for a file which speeds up
   consecutive checks of properly formatted unmodified files (#448)
 
 * cache is now populated when `--check` is successful for a file which speeds up
   consecutive checks of properly formatted unmodified files (#448)
 

-* code with `_` in numeric literals is recognized as Python 3.6+ (#461)
+* whitespace at the beginning of the file is now removed (#399)
+
+* fixed mangling [pweave](http://mpastell.com/pweave/) and
+  [Spyder IDE](https://pythonhosted.org/spyder/) special comments (#532)

 
 * fixed unstable formatting when unpacking big tuples (#267)
 
 
 * fixed unstable formatting when unpacking big tuples (#267)
 


@@ -953,7 +978,6 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md).
   to be a bad idea (#415)
 
 
   to be a bad idea (#415)
 
 

-

 ### 18.6b4
 
 * hotfix: don't freeze when multiple comments directly precede `# fmt: off` (#371)
 ### 18.6b4
 
 * hotfix: don't freeze when multiple comments directly precede `# fmt: off` (#371)


@@ -1328,3 +1352,4 @@ Multiple contributions by:
 * [Stavros Korokithakis](mailto:hi@stavros.io)
 * [Sunil Kapil](mailto:snlkapil@gmail.com)
 * [Vishwas B Sharma](mailto:sharma.vishwas88@gmail.com)
 * [Stavros Korokithakis](mailto:hi@stavros.io)
 * [Sunil Kapil](mailto:snlkapil@gmail.com)
 * [Vishwas B Sharma](mailto:sharma.vishwas88@gmail.com)

+* [Chuck Wooters](mailto:chuck.wooters@microsoft.com)