/usr/share/vim/vim74/ftplugin/tex.vim is in vim-runtime 2:7.4.052-1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | " LaTeX filetype plugin
" Language: LaTeX (ft=tex)
" Maintainer: Benji Fisher, Ph.D. <benji@member.AMS.org>
" Version: 1.4
" Last Change: Wed 19 Apr 2006
" URL: http://www.vim.org/script.php?script_id=411
" Only do this when not done yet for this buffer.
if exists("b:did_ftplugin")
finish
endif
" Start with plain TeX. This will also define b:did_ftplugin .
source $VIMRUNTIME/ftplugin/plaintex.vim
" Avoid problems if running in 'compatible' mode.
let s:save_cpo = &cpo
set cpo&vim
let b:undo_ftplugin .= "| setl inex<"
" Allow "[d" to be used to find a macro definition:
" Recognize plain TeX \def as well as LaTeX \newcommand and \renewcommand .
" I may as well add the AMS-LaTeX DeclareMathOperator as well.
let &l:define .= '\|\\\(re\)\=new\(boolean\|command\|counter\|environment\|font'
\ . '\|if\|length\|savebox\|theorem\(style\)\=\)\s*\*\=\s*{\='
\ . '\|DeclareMathOperator\s*{\=\s*'
" Tell Vim how to recognize LaTeX \include{foo} and plain \input bar :
let &l:include .= '\|\\include{'
" On some file systems, "{" and "}" are inluded in 'isfname'. In case the
" TeX file has \include{fname} (LaTeX only), strip everything except "fname".
let &l:includeexpr = "substitute(v:fname, '^.\\{-}{\\|}.*', '', 'g')"
" The following lines enable the macros/matchit.vim plugin for
" extended matching with the % key.
" ftplugin/plaintex.vim already defines b:match_skip and b:match_ignorecase
" and matches \(, \), \[, \], \{, and \} .
if exists("loaded_matchit")
let b:match_words .= ',\\begin\s*\({\a\+\*\=}\):\\end\s*\1'
endif " exists("loaded_matchit")
let &cpo = s:save_cpo
unlet s:save_cpo
" vim:sts=2:sw=2:
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