This is a mirror of http://www.vim.org/scripts/script.php?script_id=3893

Flexible viewer for any documentation source (help/man/perldoc/etc.) for any
file type inside Vim in easy to use, consistent, smart and configurable way.

 * You can configure how (keys/commands) documentation will be open.
   By default it will replace standard mapping for key K and command :help
   plus add mapping for <F1> key and new commands :man, :doc, etc.

 * You can configure where (buffer/window/tab) documentation will be open.
   Can open new docs in one dedicated (K) or new (<F1>) buffer/window/tab. 
   Support all work styles:

   - full screen (no tabs, one window, open files/docs are in hidden buffers), 
   - windowed (no tabs, many windows with open files/docs), 
   - tabbed full screen (many tabs, each with one window, open files/docs are
     in different tabs), 
   - tabbed (many tabs with many windows inside tabs). 

 * You can easily navigate to next/previous topic while viewing documentation
   using <C-]> and <C-T> (or alternative keys <CR> and <BS>), just
   like you use tags for navigation within source code and Vim's help.

 * Even closing documentation buffer/window/tab is easier, smarter and more
   configurable than ever before. :)

 * Smart detection of documentation source and topic when opening
   documentation for <cword> (word under cursor) - can use current syntax
   highlight (to find topic's context) and surrounding text (when topic
   doesn't include important special symbols because of 'iskeyword' value).

 * Smart completion for available documentation topics when opening
   documentation using command (just like Vim's :help command works).
   (Some documentation sources may not support this.)

 * Supported documentation sources:

   - man pages
   - Vim's help
   - custom documentation in vim help format: (CSS 2.1, CMake, LaTeX, �)
   - perldoc
   - godoc
   - pydoc (python)
   - pman (php)
   - OS Inferno man pages
   - ri (ruby)
   - bash's help
   - GNU info (smart support for: awk, make, m4, automake)

 * Support for new documentation sources and file types can be easily added by
   external plugins or within ~/.vimrc file.

 * You can have several documentation sources for same file type, and choose
   which one should be used on-the-fly.

 * Can be used as console man page viewer instead of /usr/bin/man.

Tested only in Linux, but should work in any *NIX.

Source: https://github.com/powerman/vim-plugin-viewdoc