=== Vim ===
To make [[Vim (text editor)|Vim]] (Amiga, Linux, Mac OS X, Windows, OpenVMS, OS/2, Unix) support the MediaWiki 
markup used on Wikipedia (basically syntax highlighting; see 
[[#IATgvim|It's All Text and vim/gvim]] for how to set up vim/gvim to edit wiki pages), 
save [{{SERVER}}/w/index.php?title=User:Samsara/Wikipedia.vim&action=raw&ctype=text/css Wikipedia.vim]
to your "syntax" directory. By default, this directory is "<tt>~/.vim/syntax</tt>" on a Unix system, and "<tt>C:\Program Files\Vim\vimfiles\syntax</tt>" on a Windows system.  If any of the directories above don't exist you may create them (the Unix/Linux command is <tt>[[mkdir]]</tt>).

To autodetect files ending in "<tt>.wiki</tt>", add the following lines to "<tt>.vim/filetype.vim</tt>" or "<tt>vimfiles\filetype.vim</tt>" (or create the file if it doesn't exist):

 augroup filetypedetect
     autocmd BufRead,BufNewFile *.wiki setfiletype Wikipedia
     autocmd BufRead,BufNewFile *.wikipedia.org.* setfiletype Wikipedia
 augroup END

Alternatively, add the following line to the <code>vimrc</code> file (typically <tt>~/.vimrc</tt> on Unix and <tt>C:\Program Files\Vim\_vimrc</tt> on Windows) (this doesn't work in Vim 7, use the above example):

 autocmd BufRead,BufNewFile *.wiki setfiletype Wikipedia
 autocmd BufRead,BufNewFile *.wikipedia.org.* setfiletype Wikipedia

Alternatively, the command "<tt>:setf Wikipedia</tt>" will temporarily set the syntax for the current file.

The above mentioned Firefox extension Mozex creates a temporary file ending in "<tt>.txt</tt>" rather than "<tt>.wiki</tt>" so the above autodetection will not work in combination with that plugin.  One solution is to have Mozex invoke vim with these arguments:

 -c "setf Wikipedia"

Wikipedia articles often only have line-breaks at the end of each paragraph, a situation Vim doesn't handle gracefully by default. Save the following lines to "<tt>~/.vim/ftplugin/Wikipedia.vim</tt>" or "<tt>vimfiles\ftplugin\Wikipedia.vim</tt>" to make it easier (you may need to put "<tt>filetype plugin on</tt>" in your <code>vimrc</code>).

 setlocal fileencoding=utf-8
 setlocal textwidth=0
 setlocal linebreak
 setlocal matchpairs+=<:>
 setlocal comments=n:#,n:*,n:\:,s:{\|,m:\|,ex:\|} 
 setlocal formatoptions=rol
 noremap <buffer> k gk
 noremap <buffer> j gj
 noremap <buffer> <Up> gk
 noremap <buffer> <Down> gj
 noremap <buffer> 0 g0
 noremap <buffer> ^ g^
 noremap <buffer> $ g$
 inoremap <buffer> <Up> <C-O>gk
 inoremap <buffer> <Down> <C-O>gj
 
 " match HTML tags (taken directly from $VIM/ftplugin/html.vim)
 if exists("loaded_matchit")
     let b:match_ignorecase=0
     let b:match_skip = 's:Comment'
     let b:match_words = '<:>,' .
     \ '<\@<=[ou]l\>[^>]*\%(>\|$\):<\@<=li\>:<\@<=/[ou]l>,' .
     \ '<\@<=dl\>[^>]*\%(>\|$\):<\@<=d[td]\>:<\@<=/dl>,' .
     \ '<\@<=\([^/][^ \t>]*\)[^>]*\%(>\|$\):<\@<=/\1>'
 endif

Please feel free to edit Wikipedia.vim and [[:Image:Wikipedia.vim|upload an improved copy]], or to check on the [http://news.gmane.org/gmane.editors.vim.devel vim-devel list] if anyone has requested the upload of Wikipedia.vim, and if not, to request it. (As of [[2008]]-[[07-11]], it is not in [http://vim.svn.sourceforge.net/viewvc/vim/vim7/runtime/syntax/ Vim's "syntax/" directory].)

The above scripts are also posted in the [http://www.vim.org/scripts/script.php?script_id=1787 vim.org script collection], where they are occasionally updated with newer versions taken from community contributions on this site.  Feel free to remind [[User:Mvcorks|mvc]] to upload a newer copy periodically if those become stale, since they were uploaded from his vim.org account.