commit https://github.com/vim/vim/commit/46643713dc6bb04b4e84986b1763ef309e960161 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Sep 9 21:42:36 2016 +0200 patch 7.4.2357 Problem: Attempt to read history entry while not initialized. Solution: Skip when the index is negative.

" Vim support file to switch off loading indent files for file types
"
" Maintainer:	Bram Moolenaar <Bram@vim.org>
" Last Change:	2001 Jun 11

if exists("did_indent_on")
  unlet did_indent_on
endif

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