*Powerline.txt*	For Vim version 7.3.	Last change: 2011 Nov 23

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==============================================================================
CONTENTS                                                  *Powerline-contents*

    1. Introduction ....................... |Powerline-introduction|
    2. Usage .............................. |Powerline-usage|
    3. Requirements ....................... |Powerline-requirements|
       3.1 Recommended settings ........... |Powerline-recommended-settings|
    4. Configuration ...................... |Powerline-configuration|
       4.1 Powerline_cache_file ........... |Powerline_cache_file|
           4.1.1 Clearing the cache ....... |:PowerlineClearCache|
       4.2 Powerline_cache_enabled ........ |Powerline_cache_enabled|
       4.3 Powerline_symbols .............. |Powerline_symbols|
           4.3.1 Compatible symbols ....... |Powerline-symbols-compatible|
           4.3.2 Fancy symbols ............ |Powerline-symbols-fancy|
           4.3.3 Overriding symbols ....... |Powerline_symbols_override|
           4.3.4 Overriding dividers ...... |Powerline_dividers_override|
       4.4 Powerline_theme ................ |Powerline_theme|
       4.5 Powerline_colorscheme .......... |Powerline_colorscheme|
       4.6 Powerline_stl_path_style ....... |Powerline_stl_path_style|
    5. Fonts .............................. |Powerline-fonts|
    6. Customization ...................... |Powerline-customization|
       6.1 Basic customization ............ |Powerline-basic-customization|
       6.2 Advanced customization ......... |Powerline-advanced-customization|
           6.2.1 Colorschemes ............. |Powerline-cust-colorschemes|
           6.2.2 Functions ................ |Powerline-cust-functions|
           6.2.3 Segments ................. |Powerline-cust-segments|
           6.2.4 Themes ................... |Powerline-cust-themes|
    7. License ............................ |Powerline-license|
    8. Known issues ....................... |Powerline-known-issues|
    9. Contributing ....................... |Powerline-contributing|

==============================================================================
1. Introduction                           *Powerline* *Powerline-introduction*

Powerline is a utility plugin which allows you to create better-looking, more 
functional Vim statuslines.

==============================================================================
2. Usage                                                     *Powerline-usage*

Powerline is automatically enabled when it's installed, either by unzipping 
the provided archive or by adding it as a Pathogen/Vundle bundle.

Powerline replaces the standard Vim 'statusline' with a custom statusline made 
up of Powerline segments.

Powerline ignores any 'statusline' customizations you have defined in your 
|vimrc|. If you remove Powerline, your 'statusline' customizations are 
restored.

==============================================================================
3. Requirements                                       *Powerline-requirements*

Powerline has been developed and tested in Vim 7.3, but it should run without 
any problems in Vim 7.2. The default configuration requires a Unix-like system 
to work properly.

The plugin only works with Vim running in an 88/256-color terminal or Gvim.

Vi-compatible mode must be disabled.

------------------------------------------------------------------------------
3.1 Recommended settings                      *Powerline-recommended-settings*

The following configuration options should be set in your |vimrc|: >

    set nocompatible   " Disable vi-compatibility
    set laststatus=2   " Always show the statusline
    set encoding=utf-8 " Necessary to show Unicode glyphs

Note: If you're using an 88/256-color terminal but still don't see the colored 
statusline, you may have to set the following option as well: >

    set t_Co=256 " Explicitly tell Vim that the terminal supports 256 colors

==============================================================================
4. Configuration                                     *Powerline-configuration*

Powerline will work fine without any user configuration, but default behavior 
can be overridden by setting configuration variables globally in your |vimrc| 
file.

------------------------------------------------------------------------------
4.1 Powerline_cache_file                                *Powerline_cache_file*

By default Powerline caches all the statuslines and colors in a cache file in 
the plugin's directory (or the Vim directory, depending on the installation 
method used).

It's recommended that you enable the cache, as this dramatically improves Vim 
startup time after the cache file has been generated (the plugin usually loads 
within ~100ms without the cache and ~1ms with the cache).

Note: The default cache filename includes the current theme, colorscheme and 
symbol settings in order to tie the cache file to your current configuration, 
so the cache file will be regenerated when you change any settings. This may 
leave several old cache files in your Vim folder, and these may safely be 
deleted.

Defaults: "<plugin_directory>/Powerline_<theme>_<colorscheme>_<symbols>.cache"

------------------------------------------------------------------------------
4.1.1 Clearing the cache                                *:PowerlineClearCache*

Powerline provides a command to easily clear the cache after changing your 
settings or updating your theme. Simply run the following command to clear 
your cache, and restart Vim afterwards: >

    :PowerlineClearCache
<
------------------------------------------------------------------------------
4.2 Powerline_cache_enabled                          *Powerline_cache_enabled*

It's possible to disable statusline caching by setting this option to 0. This 
is mostly useful when developing statuslines.

Example: >

    let g:Powerline_cache_enabled = 0
<

Default: 1

------------------------------------------------------------------------------
4.3 Powerline_symbols                                      *Powerline_symbols*

This option defines which set of symbols and dividers you want to use. There 
are currently three available options: "compatible", "unicode" and "fancy".

    TYPE           DESCRIPTION ~
    compatible     Doesn't use any special characters.
    unicode        Simulates icons and arrows using similar Unicode glyphs.
    fancy          Custom icons and arrows. Requires a patched font.

Example: >

    let g:Powerline_symbols = 'fancy'
<

Default: "compatible"

Symbols can be inserted into statuslines by using the following variables 
(just insert the variables as text in your segments):

    VARIABLE       DESCRIPTION ~
    $BRANCH        Inserts a branch symbol
    $RO            Inserts a read-only symbol
    $FT            Inserts a filetype symbol
    $LINE          Inserts a line number symbol

------------------------------------------------------------------------------
4.3.1 Compatible symbols                        *Powerline-symbols-compatible*

These symbols will work in any configuration, and do not require a special 
font to work. This option will replace the fancy icons with plain text, and 
the pointy dividers with straight lines.

------------------------------------------------------------------------------
4.3.2 Fancy symbols                                  *Powerline-symbols-fancy*

These symbols require a custom font to work. A font patcher is provided for 
adding the required symbols to any outline font and some bitmap fonts, see 
|Powerline-fonts| and the provided README file for usage details.

------------------------------------------------------------------------------
4.3.3 Overriding symbols                          *Powerline_symbols_override*

You can override symbols by adding your symbols to the 
g:Powerline_symbols_override dictionary. Example: If you want the branch 
symbol to be "∓" (hex code 0x2213) and the line symbol to be "L" you can add 
the following to your |vimrc|: >

    let g:Powerline_symbols_override = {
        \ 'BRANCH': [0x2213],
        \ 'LINE': 'L',
        \ }
<
------------------------------------------------------------------------------
4.3.4 Overriding dividers                        *Powerline_dividers_override*

If you for some reason want to override the dividers then you can set 
g:Powerline_dividers_override to a list with exactly four elements:

    1: Hard right-pointing arrow
    2: Soft right-pointing arrow
    3: Hard left-pointing arrow
    4: Soft left-pointing arrow

Example: >

    let g:Powerline_dividers_override = ['>>', '>', '<<', '<']
<

------------------------------------------------------------------------------
4.3.5 Overriding mode names                                   *Powerline_mode*

You can change the names used for modes at the far left by setting some
variables in your |vimrc|. For example you can change "N" to "NORMAL" with: >

    let g:Powerline_mode_n = 'NORMAL'
<
The variables are all named beginning with 'g:Powerline_mode_', as follows:

mode                name    default       note ~
Normal              n       ' N '         (surrounded by spaces)
Insert              i       INSERT
Replace             R       REPLACE       |Replace-mode|
Visual              v       VISUAL        |Visual-mode|
Visual linewise     V       V⋅LINE
Visual blockwise    cv      V⋅BLOCK
Select              s       SELECT        |Select-mode|
Select linewise     S       S⋅LINE
Select blockwise    cs      S⋅BLOCK

-----------------------------------------------------------------------------
4.4 Powerline_theme                                          *Powerline_theme*

This option defines the theme Powerline uses. The available themes are located 
in autoload/Powerline/Themes/. A theme is a pre-defined set of Powerline 
segments which make up the statusline.

Example: >

    let g:Powerline_theme = 'skwp'
<

Default: "default"

------------------------------------------------------------------------------
4.5 Powerline_colorscheme                              *Powerline_colorscheme*

This option defines the colorscheme Powerline uses. The available colorschemes 
are located in autoload/Powerline/Colorschemes/.

Example: >

    let g:Powerline_colorscheme = 'skwp'
<

Default: "default"

------------------------------------------------------------------------------
4.6 Powerline_stl_path_style                        *Powerline_stl_path_style*

There are currently four ways to display the current path and file name. The 
default is to only display the file name like the %t statusline item. By 
setting this configuration value you can choose from the following ways 
display the current path and file name:

    VALUE      DESCRIPTION ~
    filename   Display only the file name using the %t statusline item.
    short      Display a short path. The home directory is substituted with
               "~", the first directory is displayed with its full name, and
               subsequent directories are shortened to their first letter.
               I.e. "/home/user/foo/bar/baz.vim" becomes "~/f/b/baz.vim" and
               "long/relative/path/foo/bar/baz.vim becomes
               "long/r/p/f/b/baz.vim".
    relative   Display a relative path, similar to the %f statusline item.
    full       Display the full path, similar to the %F statusline item.

Example: >

    let g:Powerline_stl_path_style = 'full'
<

Default: "relative"

==============================================================================
5. Fonts                                                     *Powerline-fonts*

TODO

==============================================================================
6. Customization                                     *Powerline-customization*

There are currently two ways of customizing Powerline: Basic customization 
using a couple of functions to insert and remove existing segments from the 
statusline, and advanced customization using your own autoload files. The 
customization features of Powerline allow you to create your own statuslines 
without ever touching the original source code.

------------------------------------------------------------------------------
6.1 Basic customization                        *Powerline-basic-customization*

Powerline provides the following functions to alter the default statusline 
look. These functions should be called from your |vimrc| file or another file 
which is sourced at Vim startup.

Note: These functions are currently applied to all statuslines, so if you 
insert a segment after a segment which is present in many statuslines (e.g.  
the "filename" segment), all the statuslines will have the inserted segment.  
This behavior may be changed in a future version of Powerline.

Note: Remember to clear your cache with |:PowerlineClearCache| after changing 
your statusline!

Example: >

    " Insert the charcode segment after the filetype segment
    call Pl#Theme#InsertSegment('charcode', 'after', 'filetype')

    " Replace the scrollpercent segment with the charcode segment
    call Pl#Theme#ReplaceSegment('scrollpercent', 'fileinfo')
<
                                                      *Pl#Theme#InsertSegment*
Pl#Theme#InsertSegment({newsegment}, {location}, {targetsegment})

This function inserts {newsegment} before or after {targetsegment}. The 
{location} parameter specifies the location of the new segment, valid values 
are "before" and "after". You can see all the available segments in 
autoload/Powerline/Segments.vim and the files specified in 
|Powerline-cust-segments|.

Pl#Theme#RemoveSegment({targetsegment})               *Pl#Theme#RemoveSegment*

This function removes the {targetsegment} segment entirely.

Pl#Theme#ReplaceSegment({oldsegment}, {newsegment})  *Pl#Theme#ReplaceSegment*

This function replaces {oldsegment} with {newsegment}.

------------------------------------------------------------------------------
6.2 Advanced customization                  *Powerline-advanced-customization*

Because Powerline utilizes Vim's autoload functionality, you can easily create 
your own segments, themes, functions and colorschemes without touching the 
original source code. This is a bit more complex than using the utility 
functions, but it allows you to do a lot more with your statusline.

Your custom autoload files should be stored in your |runtimepath| (usually in 
"~/.vim/autoload/Powerline/*").

Note: Remember to clear your cache with |:PowerlineClearCache| after changing 
your statusline!

6.2.1 Colorschemes                               *Powerline-cust-colorschemes*
------------------------------------------------------------------------------

Colorschemes should be stored as separate files in 
{runtimepath}/autoload/Powerline/Colorschemes/.

SYNTAX ~

TODO

EXAMPLE ~

TODO

6.2.2 Functions                                     *Powerline-cust-functions*
------------------------------------------------------------------------------

Functions should be stored as separate files in 
{runtimepath}/autoload/Powerline/Functions/.

SYNTAX ~

TODO

EXAMPLE ~

TODO

6.2.3 Segments                                       *Powerline-cust-segments*
------------------------------------------------------------------------------

Segments should be stored as separate files in 
{runtimepath}/autoload/Powerline/Segments/.

SYNTAX ~

TODO

EXAMPLE ~

TODO

6.2.4 Themes                                           *Powerline-cust-themes*
------------------------------------------------------------------------------

Themes should be stored as separate files in 
{runtimepath}/autoload/Powerline/Themes/.

SYNTAX ~

TODO

EXAMPLE ~

TODO

==============================================================================
7. License                                                 *Powerline-license*

Creative Commons Attribution-ShareAlike 3.0 Unported

http://creativecommons.org/licenses/by-sa/3.0/

==============================================================================
8. Known issues                                       *Powerline-known-issues*

See the issue tracker at
https://github.com/Lokaltog/vim-powerline/issues

==============================================================================
9. Contributing                                       *Powerline-contributing*

If you experience any bugs or have feature requests, please open an issue on
GitHub. Fork the source repository on GitHub and send a pull request if you
have any code improvements.

Author: Kim Silkebækken <kim.silkebaekken+vim@gmail.com>
Source repository: https://github.com/Lokaltog/vim-powerline

==============================================================================
vim:tw=78:sw=4:ts=8:ft=help:norl:
