/usr/share/vim/vim73/syntax/nosyntax.vim is in vim-runtime 2:7.3.429-2ubuntu2.
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 | " Vim syntax support file
" Maintainer: Bram Moolenaar <Bram@vim.org>
" Last Change: 2006 Apr 16
" This file is used for ":syntax off".
" It removes the autocommands and stops highlighting for all buffers.
if !has("syntax")
finish
endif
" Remove all autocommands for the Syntax event. This also avoids that
" "syntax=foo" in a modeline triggers the SynSet() function of synload.vim.
au! Syntax
" remove all syntax autocommands and remove the syntax for each buffer
augroup syntaxset
au!
au BufEnter * syn clear
au BufEnter * if exists("b:current_syntax") | unlet b:current_syntax | endif
doautoall syntaxset BufEnter *
au!
augroup END
if exists("syntax_on")
unlet syntax_on
endif
if exists("syntax_manual")
unlet syntax_manual
endif
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