This is a mirror of http://www.vim.org/scripts/script.php?script_id=2682

colorsupport.vim
================
Use colorschemes written for gvim in color terminals.
Tested with many colorschemes including color sampler pack (vimscript #625)

To set up a 256-color terminal, see

- http://push.cx/2008/256-color-xterms-in-ubuntu
- http://robotsrule.us/vim/

And don't forget to rate ;^)

Simple usage
------------
- Drop 'colorsupport.vim' in '~/.vim/plugin'.

  At next startup, colorscheme loaded by '.vimrc' will be reloaded with gui
  colors mapped to terminal palette.  That is, if you already have gvim
  colorscheme set in '~/.vimrc', then it'll work as soon as you install the
  'colorsupport.vim' script.

- Browse and preview colorschemes in your &runtimepath by
  ':ColorSchemeBrowse'.  You can also manually try colorschemes using
  ':ColorScheme', just like ':colorscheme'.

- On slow systems, it can take long to convert colorscheme every time vim
  starts up.  For faster start-up, save last colorscheme by ':ColorSchemeSave'.

  By default, this saves last colorscheme loaded by ':ColorScheme' in the first 
  &runtimepath (usually, ~/.vim/colors on Unix).

  If last colorscheme is already from '~/.vim/colors', error will occur,  and
  you should use ':ColorSchemeSave <new-colorscheme-name>' instead.

Upgrade
-------
When upgrading colorsupport.vim, additional color groups can be set, 
but color schemes saved by :ColorSchemeSave passes conversion by :ColorScheme.
Delete old (converted and saved) color schemes if you want re-convert.

Customization
-------------
- g:colorsupport_palette_name (one of "tango" (default), "console", "xterm", "rxvt")
- g:colorsupport_palette (e.g., ['#000000',  ...]. (length better be =16))

- g:colorsupport_cube_name (one of "xterm256", "xterm88", "konsole", "eterm")
- g:colorsupport_cube (e.g. [0x00, 0x2A, 0x55, 0xAA, 0xD4])

- g:colorsupport_grey (e.g., range(0x1C, 0xFF, 30))

- g:colorsupport_rgbs (e.g., ['/usr/X11/share/X11'])

Keep {len(g:colorsupport_palette) + len(g:colorsupport_cube)^3 + len(g:colorsupport_grey) == &t_Co}

Commands
--------
- Highlight ... 

  Arguments are the same as :highlight
  Set 'cterm', 'ctermfg', 'ctermbg' based on 'gui', 'guifg', 'guibg',
  respectively.  Note that given 'cterm.*' settings are ignored.

- ColorScheme <path-or-name>

  Load a colorscheme using ':Highlight', instead of ':highlight'.
  Unlike colorscheme, path is accepted as well as colorscheme name.

- ColorSchemeBrowse [<path>]

  Browse colorschemes in <path> (or &runtimepath, if no arguments given)

- ColorSchemeSave [<name>]

  Save last colorscheme loaded by ':ColorScheme' (or, equivalently, browsed by
  ':ColorSchemeViewer') in the first &runtimepath.  If <name> is not given,
  original name of last colorscheme is used.


Comparison
----------
At the time that I uploaded this script, I was unaware of other color conversion scripts.
And I've tried them later.

vimscript #2390. (Thank you marty)

Key difference is that vimscript #2390 practically requires gvim installed.
And major difficulty (and dirty tricks) of this script was to get gui 
attributes from colorschemes, which are not obtainable from series of 
synIDxxx() functions without +gui feature.  

vimscript #1809

vimscript #1809 tries to extract hilight information by string match.
(I assume that this approach is what most conversion script have took)
By contrast, colorsupport.vim actually run the original color scheme 
with highlight command substituted with Highlight command.
Later works better because many color schemes have highlights
in conditional block, which should not be extracted.

Furthermore, vimscript #1809 does not support color names.