ref: 2a83ebb7dc6f8f719e2018df7a3a6b090e6541c9
dir: /lib/vimfiles/ftplugof.vim/
" Vim support file to switch off loading plugins for file types
"
" Maintainer: Bram Moolenaar <Bram@vim.org>
" Last Change: 2002 Apr 04
if exists("did_load_ftplugin")
unlet did_load_ftplugin
endif
" Remove all autocommands in the filetypeplugin group
silent! au! filetypeplugin *