runtime/ftplugin/c.vim

" Vim filetype plugin file
" Language:	C
" Maintainer:	Bram Moolenaar <Bram@vim.org>
" Last Change:	2005 Mar 27

" Only do this when not done yet for this buffer
if exists("b:did_ftplugin")
  finish
endif

" Don't load another plugin for this buffer
let b:did_ftplugin = 1

" Using line continuation here.
set cpo-=C

let b:undo_ftplugin = "setl fo< com< | if has('vms') | setl isk< | endif"

" Set 'formatoptions' to break comment lines but not other lines,
" and insert the comment leader when hitting <CR> or using "o".
setlocal fo-=t fo+=croql

" Set 'comments' to format dashed lists in comments.
setlocal comments=sO:*\ -,mO:*\ \ ,exO:*/,s1:/*,mb:*,ex:*/,://

" In VMS C keywords contain '$' characters.
if has("vms")
  setlocal iskeyword+=$
endif

" Win32 can filter files in the browse dialog
if has("gui_win32") && !exists("b:browsefilter")
  if &ft == "cpp"
    let b:browsefilter = "C++ Source Files (*.cpp *.c++)\t*.cpp;*.c++\n" .
	  \ "C Header Files (*.h)\t*.h\n" .
	  \ "C Source Files (*.c)\t*.c\n" .
	  \ "All Files (*.*)\t*.*\n"
  elseif &ft == "ch"
    let b:browsefilter = "Ch Source Files (*.ch *.chf)\t*.ch;*.chf\n" .
	  \ "C Header Files (*.h)\t*.h\n" .
	  \ "C Source Files (*.c)\t*.c\n" .
	  \ "All Files (*.*)\t*.*\n"
  else
    let b:browsefilter = "C Source Files (*.c)\t*.c\n" .
	  \ "C Header Files (*.h)\t*.h\n" .
	  \ "Ch Source Files (*.ch *.chf)\t*.ch;*.chf\n" .
	  \ "C++ Source Files (*.cpp *.c++)\t*.cpp;*.c++\n" .
	  \ "All Files (*.*)\t*.*\n"
  endif
endif