/usr/share/vim/vim74/ftplugin/lua.vim is in vim-runtime 2:7.4.052-1ubuntu3.1.
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 | " Vim filetype plugin file.
" Language: Lua 4.0+
" Maintainer: Max Ischenko <mfi@ukr.net>
" Last Change: 2012 Mar 07
" 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
let s:cpo_save = &cpo
set cpo&vim
" 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
setlocal com=:--
setlocal cms=--%s
setlocal suffixesadd=.lua
" The following lines enable the macros/matchit.vim plugin for
" extended matching with the % key.
if exists("loaded_matchit")
let b:match_ignorecase = 0
let b:match_words =
\ '\<\%(do\|function\|if\)\>:' .
\ '\<\%(return\|else\|elseif\)\>:' .
\ '\<end\>,' .
\ '\<repeat\>:\<until\>'
endif " exists("loaded_matchit")
let &cpo = s:cpo_save
unlet s:cpo_save
let b:undo_ftplugin = "setlocal fo< com< cms< suffixesadd<"
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