commit https://github.com/vim/vim/commit/f2c4c391192cab6e923b1a418d4af09106fba25f Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jul 29 20:50:24 2016 +0200 patch 7.4.2117 Problem: Deleting an augroup that still has autocmds does not give a warning. The next defined augroup takes its place. Solution: Give a warning and prevent the index being used for another group name.

" Vim filetype plugin file
" Language:         GNU Arch inventory file
" Maintainer:       Nikolai Weibull <now@bitwi.se>
" Latest Revision:  2008-07-09

if exists("b:did_ftplugin")
  finish
endif
let b:did_ftplugin = 1

let s:cpo_save = &cpo
set cpo&vim

let b:undo_ftplugin = "setl com< cms< fo<"

setlocal comments=:# commentstring=#\ %s formatoptions-=t formatoptions+=croql

let &cpo = s:cpo_save
unlet s:cpo_save