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343 lines
14 KiB
Plaintext
343 lines
14 KiB
Plaintext
*airline.txt* Lean and mean statusline that's light as air
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_ _ _ _ ~
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__ _(_)_ __ ___ __ _(_)_ __| (_)_ __ ___ ~
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\ \ / / | '_ ` _ \ _____ / _` | | '__| | | '_ \ / _ \ ~
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\ V /| | | | | | |_____| (_| | | | | | | | | | __/ ~
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\_/ |_|_| |_| |_| \__,_|_|_| |_|_|_| |_|\___| ~
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~
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==============================================================================
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INTRODUCTION *airline*
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vim-airline is a fast and lightweight alternative to powerline, written
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in 100% vimscript with no outside dependencies.
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==============================================================================
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FEATURES *airline-features*
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* tiny core written with extensibility in mind.
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* integrates with many popular plugins.
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* looks good with regular fonts, and provides configuration points so you
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can use unicode or powerline symbols.
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* optimized for speed; it loads in under a millisecond.
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* fully customizable; if you know a little |statusline| syntax you can
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tweak it to your needs.
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* extremely easy to write themes.
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==============================================================================
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NAME *airline-name*
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Where did the name come from?
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I wrote this on an airplane, and since it's light as air it turned out to be a
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good name :-)
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==============================================================================
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CONFIGURATION *airline-configuration*
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There are a couple configuration values available (shown with their default
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values):
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* the separator used on the left side >
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let g:airline_left_sep='>'
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<
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* the separator used on the right side >
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let g:airline_right_sep='<'
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<
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* enable modified detection >
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let g:airline_detect_modified=1
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* enable paste detection >
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let g:airline_detect_paste=1
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<
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* enable iminsert detection >
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let g:airline_detect_iminsert=1
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<
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* enable whitespace detection >
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let g:airline_detect_whitespace=0 "disabled
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let g:airline_detect_whitespace=1 "icon and message (default)
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let g:airline_detect_whitespace=2 "icon only
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<
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* determine whether inactive windows should have the left section collapsed to
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only the filename of that buffer. >
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let g:airline_inactive_collapse=1
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<
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* themes are automatically selected based on the matching colorscheme. this
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can be overridden by defining a value. >
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let g:airline_theme=
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<
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* enable/disable usage of patched powerline font symbols >
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let g:airline_powerline_fonts=0
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<
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* define the set of text to display for each mode. >
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let g:airline_mode_map = {} " see source for the defaults
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" or copy paste the following into your vimrc for shortform text
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let g:airline_mode_map = {
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\ '__' : '-',
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\ 'n' : 'N',
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\ 'i' : 'I',
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\ 'R' : 'R',
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\ 'c' : 'C',
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\ 'v' : 'V',
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\ 'V' : 'V',
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\ '' : 'V',
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\ 's' : 'S',
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\ 'S' : 'S',
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\ '' : 'S',
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\ }
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<
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* define the set of filename match queries which excludes a window from having
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its statusline modified >
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let g:airline_exclude_filenames = [] " see source for current list
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<
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* define the set of filetypes which are excluded from having its window
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statusline modified >
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let g:airline_exclude_filetypes = [] " see source for current list
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<
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* defines whether the preview window should be excluded from have its window
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statusline modified (may help with plugins which use the preview window
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heavily) >
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let g:airline_exclude_preview = 0
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<
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==============================================================================
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COMMANDS *airline-commands*
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:AirlineTheme {theme-name} *:AirlineTheme*
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Displays or changes the current theme.
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:AirlineToggleWhitespace *:AirlineToggleWhitespace*
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Toggles whitespace detection.
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:AirlineToggle *:AirlineToggle*
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Toggle this plugin (e.g. the nice statusline)
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==============================================================================
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CUSTOMIZATION *airline-customization*
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The following are some unicode symbols for customizing the left/right
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separators, as well as the powerline font glyths.
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>
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" unicode symbols
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let g:airline_left_sep = '»'
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let g:airline_left_sep = '▶'
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let g:airline_right_sep = '«'
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let g:airline_right_sep = '◀'
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let g:airline_linecolumn_prefix = '␊ '
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let g:airline_linecolumn_prefix = ' '
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let g:airline_linecolumn_prefix = '¶ '
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let g:airline_branch_prefix = '⎇ '
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let g:airline_paste_symbol = 'ρ'
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let g:airline_paste_symbol = 'Þ'
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let g:airline_paste_symbol = '∥'
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let g:airline#extensions#whitespace#symbol = 'Ξ'
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" powerline symbols
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let g:airline_left_sep = ''
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let g:airline_left_alt_sep = ''
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let g:airline_right_sep = ''
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let g:airline_right_alt_sep = ''
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let g:airline_branch_prefix = ' '
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let g:airline_readonly_symbol = ''
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let g:airline_linecolumn_prefix = ' '
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" old vim-powerline symbols
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let g:airline_left_sep = '⮀'
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let g:airline_left_alt_sep = '⮁'
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let g:airline_right_sep = '⮂'
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let g:airline_right_alt_sep = '⮃'
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let g:airline_branch_prefix = '⭠'
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let g:airline_readonly_symbol = '⭤'
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let g:airline_linecolumn_prefix = '⭡'
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<
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For more intricate customizations, you can replace the predefined sections
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with the usual statusline syntax. Note that many of these settings can also be
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controlled with |airline-configuration| variables, which is useful for
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sections which by default host more than one extension.
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>
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variable names default contents
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----------------------------------------------------------------------------
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let g:airline_section_a (the mode/paste indicator)
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let g:airline_section_b (the fugitive/lawrencium branch indicator)
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let g:airline_section_c (bufferline or filename)
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let g:airline_section_gutter (csv)
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let g:airline_section_x (tagbar, filetype)
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let g:airline_section_y (fileencoding, fileformat)
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let g:airline_section_z (percentage, line number, column number)
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let g:airline_section_warning (syntastic, whitespace)
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" here is an example of how you could replace the branch indicator with
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" the current working directory, followed by the filename.
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let g:airline_section_b = '%{getcwd()}'
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let g:airline_section_c = '%t'
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<
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==============================================================================
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EXTENSIONS *airline-extensions*
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*airline-branch*
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fugitive.vim <https://github.com/tpope/vim-fugitive>
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lawrencium <https://bitbucket.org/ludovicchabant/vim-lawrencium>
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* enable/disable fugitive/lawrencium integration >
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let g:airline_enable_branch = 1
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<
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* change the text for when no branch is detected >
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let g:airline_branch_empty_message = ''
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<
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*airline-syntastic*
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syntastic <https://github.com/scrooloose/syntastic>
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* enable/disable syntastic integration >
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let g:airline_enable_syntastic = 1
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<
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*airline-tagbar*
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tagbar <https://github.com/majutsushi/>
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* enable/disable tagbar integration >
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let g:airline_enable_tagbar = 1
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<
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*airline-csv*
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csv.vim <https://github.com/chrisbra/csv.vim>
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* enable/disable csv integration for displaying the current column. >
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let g:airline_enable_csv = 1
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<
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* change how columns are displayed. >
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let g:airline#extensions#csv#column_display = 'Number' (default)
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let g:airline#extensions#csv#column_display = 'Name'
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<
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*airline-hunks*
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vim-gitgutter <https://github.com/airblade/vim-gitgutter>
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* enable/disable detecting changed hunks under source control. >
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let g:airline_enable_hunks = 1
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<
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* enable/disable showing only non-zero hunks. >
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let g:airline#extensions#hunks#non_zero_only = 0
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<
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* set hunk count symbols. >
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let g:airline#extensions#hunks#hunk_symbols = ['+', '~', '-']
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<
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==============================================================================
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FUNCREFS *airline-funcrefs*
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vim-airline internally uses funcrefs to integrate with third party plugins,
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and you can tap into this functionality to extend it for you needs.
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*g:airline_statusline_funcrefs*
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The g:airline_statusline_funcrefs variable is an array of funcrefs that get
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invoked before the statusline gets overwritten for each window. The following
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is an example of how you can extend vim-airline to support a new plugin.
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>
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function! MyPlugin()
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if &filetype == 'MyPluginFileType'
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let w:airline_section_a = 'MyPlugin'
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let w:airline_section_b = '%f'
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let w:airline_section_c = '%{MyPlugin#function()}'
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let g:airline_variable_referenced_in_statusline = 'foo'
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endif
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endfunction
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call add(g:airline_statusline_funcrefs, function('MyPlugin'))
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<
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*g:airline_exclude_funcrefs*
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The g:airline_exclude_funcrefs variable is an array that's returns 1 or 0 to
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determine whether that particular window should be excluded from having its
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statusline modified. Here is an example:
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>
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function! ExcludeFoo()
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return &filetype == 'FooType'
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endfunction
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call add(g:airline_exclude_funcrefs, function('ExcludeFoo'))
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<
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==============================================================================
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WRITING EXTENSIONS *airline-writing-extensions*
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The basic idea is that the statusline is rendered with a series of overrides.
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For each section that the algorithm encounters, it will first check to see if
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there is a window-local variable of the section. If it exists, the value will
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be used, otherwise, the global variable of the section will be used. This
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means it is possible to override only one or two sections of the statusline.
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See |g:airline_statusline_funcrefs| for an example of a simple extension.
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For contributions into the plugin, here are the following guidelines:
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1. For simple |&filetype| checks, they can be added directly into the
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`extensions.vim` file.
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2. Pretty much everything else should live as a separate file under the
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`extensions/` directory.
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a. Inside `extensions.vim`, add a check for some variable or command that
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is always available (these must be defined in `plugin`, and _not_
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`autoload` of the other plugin). If it exists, then initialize the
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extension. This ensures that the extension is loaded if and only if the
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user has the other plugin installed.
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b. Extension specific variables should be defined in the extension, e.g.
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`g:airline#extensions#foo_plugin#bar_variable`. Unfortunately, the
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branch extension does not follow this convention, but for legacy reasons
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those variables are kept as is.
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See the source of |example.vim| for a working extension.
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==============================================================================
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WRITING THEMES *airline-themes*
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Themes are written "close to the metal" -- you will need to know some basic
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VimL syntax to write a theme, but if you've written in any programming
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language before it will be easy to pick up.
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The |dark.vim| theme fully documents this procedure and will guide you through
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the process. The |jellybeans.vim| theme is another example of how to write a
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theme, but instead of manually declaring colors, it extracts the values from
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highlight groups.
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==============================================================================
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TROUBLESHOOTING *airline-troubleshooting*
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Q. There are no colors.
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A. You need to set up your terminal correctly. For more details, see
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<http://vim.wikia.com/wiki/256_colors_in_vim>. Alternatively, if you want
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to bypass the automatic detection of terminal colors, you can force Vim
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into 256 color mode with this: >
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set t_Co=256
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<
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Q. The statusline does not appear until I create a split.
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A. This is the default setting of |laststatus|. If you want it to appear all
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the time, add the following to your vimrc: >
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set laststatus=2
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<
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Q. Powerline symbols are not showing up.
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A. First, you must install patched powerline fonts. Second, you must enable
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unicode in vim. >
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set encoding=utf-8
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<
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Q. There is a pause when leaving insert mode.
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A. Add the following to your vimrc. >
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set ttimeoutlen=50
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<
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Q. The colors look a little off for some themes.
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A. Certain themes are derived from the active colorscheme by extracting colors
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from predefined highlight groups. These airline themes will look good for
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their intended matching colorschemes, but will be hit or miss when loaded
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with other colorschemes.
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Solutions to other common problems can be found in the Wiki:
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<https://github.com/bling/vim-airline/wiki/FAQ>
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==============================================================================
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CONTRIBUTIONS *airline-contributions*
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Contributions and pull requests are welcome.
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==============================================================================
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LICENSE *airline-license*
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MIT License. Copyright © 2013 Bailey Ling.
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vim:tw=78:ts=8:ft=help:norl:
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