X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/21c32d80b6f505db545840be21030ddbeef9224e..92957a41e3f909c7b813b448f65cd437cf0139f2:/README.md diff --git a/README.md b/README.md index cef3283..02cf2f9 100644 --- a/README.md +++ b/README.md @@ -230,11 +230,9 @@ are always reformatted to fit minimal space, this whitespace is lost. It will also insert proper spacing before and after function definitions. It's one line before and after inner functions and two lines before and -after module-level functions. *Black* will put those empty lines also -between the function definition and any standalone comments that -immediately precede the given function. If you want to comment on the -entire function, use a docstring or put a leading comment in the function -body. +after module-level functions. *Black* will not put empty lines between +function/class definitions and standalone comments that immediately precede +the given function/class. ### Trailing commas @@ -289,6 +287,33 @@ a bit easier than double quotes. The latter requires use of the Shift key. My recommendation here is to keep using whatever is faster to type and let *Black* handle the transformation. +### Line Breaks & Binary Operators + +*Black* will break a line before a binary operator when splitting a block +of code over multiple lines. This is so that *Black* is compliant with the +recent changes in the [PEP 8](https://www.python.org/dev/peps/pep-0008/#should-a-line-break-before-or-after-a-binary-operator) +style guide, which emphasizes that this approach improves readability. + +This behaviour may raise ``W503 line break before binary operator`` warnings in +style guide enforcement tools like Flake8. Since ``W503`` is not PEP 8 compliant, +you should tell Flake8 to ignore these warnings. + +### Parentheses + +Some parentheses are optional in the Python grammar. Any expression can +be wrapped in a pair of parentheses to form an atom. There are a few +interesting cases: + +- `if (...):` +- `while (...):` +- `for (...) in (...):` +- `assert (...), (...)` +- `from X import (...)` + +In those cases, parentheses are removed when the entire statement fits +in one line, or if the inner expression doesn't have any delimiters to +further split on. Otherwise, the parentheses are always added. + ## Editor integration @@ -297,6 +322,36 @@ and let *Black* handle the transformation. Use [proofit404/blacken](https://github.com/proofit404/blacken). +### PyCharm + +1. Install `black`. + + $ pip install black + +2. Locate your `black` installation folder. + + On MacOS / Linux / BSD: + + $ which black + /usr/local/bin/black # possible location + + On Windows: + + $ where black + %LocalAppData%\Programs\Python\Python36-32\Scripts\black.exe # possible location + +3. Open External tools in PyCharm with `File -> Settings -> Tools -> External Tools`. + +4. Click the + icon to add a new external tool with the following values: + - Name: Black + - Description: Black is the uncompromising Python code formatter. + - Program: + - Arguments: $FilePath$ + +5. Format the currently opened file by selecting `Tools -> External Tools -> black`. + - Alternatively, you can set a keyboard shortcut by navigating to `Preferences -> Keymap`. + + ### Vim Commands and shortcuts: @@ -311,9 +366,21 @@ Configuration: * `g:black_linelength` (defaults to `88`) * `g:black_virtualenv` (defaults to `~/.vim/black`) -To install, copy the plugin from [vim/plugin/black.vim](https://github.com/ambv/black/tree/master/vim/plugin/black.vim). +To install with [vim-plug](https://github.com/junegunn/vim-plug): + +``` +Plug 'ambv/black', +``` + +or with [Vundle](https://github.com/VundleVim/Vundle.vim): + +``` +Plugin 'ambv/black' +``` + +or you can copy the plugin from [plugin/black.vim](https://github.com/ambv/black/tree/master/plugin/black.vim). Let me know if this requires any changes to work with Vim 8's builtin -`packadd`, or Pathogen, or Vundle, and so on. +`packadd`, or Pathogen, and so on. This plugin **requires Vim 7.0+ built with Python 3.6+ support**. It needs Python 3.6 to be able to run *Black* inside the Vim process which @@ -340,6 +407,9 @@ to do this. Use [joslarson.black-vscode](https://marketplace.visualstudio.com/items?itemName=joslarson.black-vscode). +### SublimeText 3 + +Use [sublack plugin](https://github.com/jgirardet/sublack). ### Other editors @@ -357,6 +427,42 @@ affect your use case. This can be used for example with PyCharm's [File Watchers](https://www.jetbrains.com/help/pycharm/file-watchers.html). +## Version control integration + +Use [pre-commit](https://pre-commit.com/). Once you [have it +installed](https://pre-commit.com/#install), add this to the +`.pre-commit-config.yaml` in your repository: +```yaml +repos: +- repo: https://github.com/ambv/black + rev: stable + hooks: + - id: black + args: [--line-length=88, --safe] + python_version: python3.6 +``` +Then run `pre-commit install` and you're ready to go. + +`args` in the above config is optional but shows you how you can change +the line length if you really need to. If you're already using Python +3.7, switch the `python_version` accordingly. Finally, `stable` is a tag +that is pinned to the latest release on PyPI. If you'd rather run on +master, this is also an option. + + +## Ignoring non-modified files + +*Black* remembers files it already formatted, unless the `--diff` flag is used or +code is passed via standard input. This information is stored per-user. The exact +location of the file depends on the black version and the system on which black +is run. The file is non-portable. The standard location on common operating systems +is: + +* Windows: `C:\\Users\\AppData\Local\black\black\Cache\\cache..pickle` +* macOS: `/Users//Library/Caches/black//cache..pickle` +* Linux: `/home//.cache/black//cache..pickle` + + ## Testimonials **Dusty Phillips**, [writer](https://smile.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=dusty+phillips): @@ -412,10 +518,53 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md). ## Change Log +### 18.4a3 (unreleased) + +* added a "cache"; files already reformatted that haven't changed on disk + won't be reformatted again (#109) + +* `--check` and `--diff` are no longer mutually exclusive (#149) + +* generalized star expression handling, including double stars; this + fixes multiplication making expressions "unsafe" for trailing commas (#132) + +* fixed comment indentation when a standalone comment closes a block (#16, #32) + +* fixed standalone comments receiving extra empty lines if immediately preceding + a class, def, or decorator (#56, #154) + +* fixed `--diff` not showing entire path (#130) + +* fixed parsing of complex expressions after star and double stars in + function calls (#2) + +* fixed invalid splitting on comma in lambda arguments (#133) + +### 18.4a2 + +* fixed parsing of unaligned standalone comments (#99, #112) + +* fixed placement of dictionary unpacking inside dictionary literals (#111) + +* Vim plugin now works on Windows, too + +* fixed unstable formatting when encountering unnecessarily escaped quotes + in a string (#120) + + ### 18.4a1 * added `--quiet` (#78) +* added automatic parentheses management (#4) + +* added [pre-commit](https://pre-commit.com) integration (#103, #104) + +* fixed reporting on `--check` with multiple files (#101, #102) + +* fixed removing backslash escapes from raw strings (#100, #105) + + ### 18.4a0 * added `--diff` (#87) @@ -540,14 +689,18 @@ More details can be found in [CONTRIBUTING](CONTRIBUTING.md). Glued together by [Łukasz Langa](mailto:lukasz@langa.pl). -Maintained with [Carol Willing](mailto:carolcode@willingconsulting.com) -and [Carl Meyer](mailto:carl@oddbird.net). +Maintained with [Carol Willing](mailto:carolcode@willingconsulting.com), +[Carl Meyer](mailto:carl@oddbird.net), +[Mika Naylor](mailto:mail@autophagy.io), and +[Zsolt Dollenstein](mailto:zsol.zsol@gmail.com). Multiple contributions by: +* [Anthony Sottile](mailto:asottile@umich.edu) * [Artem Malyshev](mailto:proofit404@gmail.com) * [Daniel M. Capella](mailto:polycitizen@gmail.com) * [Eli Treuherz](mailto:eli.treuherz@cgi.com) * Hugo van Kemenade -* [Mika Naylor](mailto:mail@autophagy.io) +* [Ivan Katanić](mailto:ivan.katanic@gmail.com) +* [Jonas Obrist](mailto:ojiidotch@gmail.com) * [Osaetin Daniel](mailto:osaetindaniel@gmail.com) -* [Zsolt Dollenstein](mailto:zsol.zsol@gmail.com) +* [Vishwas B Sharma](mailto:sharma.vishwas88@gmail.com)