]> git.madduck.net Git - etc/vim.git/blob - README.mdown

madduck's git repository

Every one of the projects in this repository is available at the canonical URL git://git.madduck.net/madduck/pub/<projectpath> — see each project's metadata for the exact URL.

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.

SSH access, as well as push access can be individually arranged.

If you use my repositories frequently, consider adding the following snippet to ~/.gitconfig and using the third clone URL listed for each project:

[url "git://git.madduck.net/madduck/"]
  insteadOf = madduck:

Add explicit instructions about configuring flake8
[etc/vim.git] / README.mdown
1 vim-flake8
2 ==========
3 `vim-flake8` is a Vim plugin that runs the currently open file through Flake8,
4 a static syntax and style checker for Python source code.  It supersedes both
5 [vim-pyflakes](https://github.com/nvie/vim-pyflakes) and
6 [vim-pep8](https://github.com/nvie/vim-pep8).
7
8 [Flake8](https://pypi.python.org/pypi/flake8/) is a wrapper around PyFlakes
9 (static syntax checker), PEP8 (style checker) and Ned's MacCabe script
10 (complexity checker).
11
12
13 Installation
14 ------------
15 Use [vim-pathogen](https://github.com/tpope/vim-pathogen) if you're not using
16 it already.  Make sure you've installed the
17 [flake8](https://pypi.python.org/pypi/flake8/) package.  Then, simply put the
18 contents of this repository in your `~/.vim/bundle` directory.
19
20 Usage
21 -----
22 1. Open a Python file
23 2. Press `<F7>` to run `flake8` on it
24
25 It shows the errors inside a quickfix window, which will allow your to quickly
26 jump to the error locations by simply pressing [Enter].
27
28 If any of `g:flake8_show_in_gutter` or `g:flake8_show_in_file` are set to `1`, call:
29
30     call flake8#Flake8UnplaceMarkers()
31
32 To remove all markers. No default mapping is provided.
33
34 Customization
35 -------------
36 If you don't want to use the `<F7>` key for flake8-checking, simply remap it to
37 another key.  It autodetects whether it has been remapped and won't register
38 the `<F7>` key if so.  For example, to remap it to `<F3>` instead, use:
39
40     autocmd FileType python map <buffer> <F3> :call Flake8()<CR>
41
42 For flake8 configuration options please consult the following page:
43
44 http://flake8.pycqa.org/en/latest/user/configuration.html
45
46 To customize the location of your flake8 binary, set `g:flake8_cmd`:
47
48     let g:flake8_cmd="/opt/strangebin/flake8000"
49
50 To customize the location of quick fix window, set `g:flake8_quickfix_location`:
51
52     let g:flake8_quickfix_location="topleft"
53
54 To customize the height of quick fix window, set `g:flake8_quickfix_height`:
55
56     let g:flake8_quickfix_height=7
57
58 To customize whether the quickfix window opens, set `g:flake8_show_quickfix`:
59
60     let g:flake8_show_quickfix=0  " don't show
61     let g:flake8_show_quickfix=1  " show (default)
62
63 To customize whether the show signs in the gutter, set `g:flake8_show_in_gutter`:
64
65     let g:flake8_show_in_gutter=0  " don't show (default)
66     let g:flake8_show_in_gutter=1  " show
67
68 To customize whether the show marks in the file, set `g:flake8_show_in_file`:
69
70     let g:flake8_show_in_file=0  " don't show (default)
71     let g:flake8_show_in_file=1  " show
72
73 To customize the number of marks to show, set `g:flake8_max_markers`:
74
75     let g:flake8_max_markers=500  " (default)
76
77 To customize the gutter markers, set any of `flake8_error_marker`, `flake8_warning_marker`,
78 `flake8_pyflake_marker`, `flake8_complexity_marker`, `flake8_naming_marker`. Setting one to
79 the empty string disables it. Ex.:
80
81     flake8_error_marker='EE'     " set error marker to 'EE'
82     flake8_warning_marker='WW'   " set warning marker to 'WW'
83     flake8_pyflake_marker=''     " disable PyFlakes warnings
84     flake8_complexity_marker=''  " disable McCabe complexity warnings
85     flake8_naming_marker=''      " disable naming warnings
86
87 To customize the colors used for markers, define the highlight groups, `Flake8_Error`,
88 `Flake8_Warning`, `Flake8_PyFlake`, `Flake8_Complexity`, `Flake8_Naming`:
89
90     " to use colors defined in the colorscheme
91     highlight link Flake8_Error      Error
92     highlight link Flake8_Warning    WarningMsg
93     highlight link Flake8_Complexity WarningMsg
94     highlight link Flake8_Naming     WarningMsg
95     highlight link Flake8_PyFlake    WarningMsg
96
97 Tips
98 ----
99 A tip might be to run the Flake8 check every time you write a Python file, to
100 enable this, add the following line to your `.vimrc` file (thanks
101 [Godefroid](https://github.com/gotcha)!):
102
103     autocmd BufWritePost *.py call Flake8()
104
105 This plugin goes well together with the following plugin:
106
107 - [PyUnit](https://github.com/nvie/vim-pyunit) (unit test helper under `<F8>`
108   and `<F9>`)
109
110
111 Max line lengths
112 ----------------
113
114 One particular customization a lot of people like to make is relaxing the
115 maximum line length default.  This is a config setting that should be set in
116 flake8 itself. (vim-flake8 "just" invokes it and deals with showing the output
117 in Vim's quickfix window.)
118
119 To do so, put the following into your `~/.config/flake8` file:
120
121     [flake8]
122     max-line-length = 120
123
124
125 History
126 -------
127 1.6: Deprecated configuring flake8 options through Vim settings.  Instead,
128 advise users to use the `~/.config/flake8` config file.
129
130     - Decprecated options:
131       - `g:flake8_builtins`
132       - `g:flake8_ignore`
133       - `g:flake8_max_line_length`
134       - `g:flake8_max_complexity`
135
136     - New options:
137       - `g:flake8_quickfix_height`
138
139 1.5: Added markers and the option to don't show the quickfix window, also split
140 functions into a autoload file. Added:
141
142     - Options:
143       - `g:flake8_show_quickfix`
144       - `g:flake8_show_in_gutter`
145       - `g:flake8_show_in_file`
146       - `g:flake8_max_markers`
147       - `flake8_error_marker`
148       - `flake8_warning_marker`
149       - `flake8_pyflake_marker`
150       - `flake8_complexity_marker`
151       - `flake8_naming_marker`
152     - Functions:
153       - `flake8#Flake8UnplaceMarkers()`
154       - `flake8#Flake8()`
155     - Highlighting:
156       - `Flake8_Error`
157       - `Flake8_Warning`
158       - `Flake8_Complexity`
159       - `Flake8_Naming`
160       - `Flake8_PyFlake`
161
162 1.4: Suppress output to stdout.
163
164 1.3: Added the following options:
165
166     - `g:flake8_builtins="_,apply"`
167     - `g:flake8_max_complexity=10`
168
169 1.2: Added the following options:
170
171     - `g:flake8_cmd="/opt/strangebin/flake8000"`
172     - `g:flake8_max_line_length=120`
173     - `g:flake8_ignore="E501,W293"`
174
175 1.1: Added `g:flake8_ignore` option.
176
177 1.0: Initial version.
178
179
180 License
181 -------
182
183 Liberally licensed under BSD terms.