commit https://github.com/vim/vim/commit/fb6ffc732e65dbc459c89247ff78134402f1a18b Author: Bram Moolenaar <Bram@vim.org> Date: Mon May 9 17:58:04 2016 +0200 patch 7.4.1827 Problem: No error when invoking a callback when it's not safe. Solution: Add an error message. Avoid the error when freeing a channel.

" Vim support file to switch off detection of file types
"
" Maintainer:	Bram Moolenaar <Bram@vim.org>
" Last change:	2001 Jun 11

if exists("did_load_filetypes")
  unlet did_load_filetypes
endif

" Remove all autocommands in the filetypedetect group
silent! au! filetypedetect *