patch 8.0.0649: when opening a help file the filetype is set several times commit https://github.com/vim/vim/commit/9049298f8d0bbc237b7c666c7ad6cdabe738e8fc Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jun 22 14:16:31 2017 +0200 patch 8.0.0649: when opening a help file the filetype is set several times Problem: When opening a help file the filetype is set several times. Solution: When setting the filetype to the same value from a modeline, don't trigger FileType autocommands. Don't set the filetype to "help" when it's already set correctly.

" Vim compiler file
" Compiler:             BDF to PCF Conversion
" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
" Latest Revision:      2006-04-19

if exists("current_compiler")
  finish
endif
let current_compiler = "bdf"

let s:cpo_save = &cpo
set cpo-=C

setlocal makeprg=bdftopcf\ $*

setlocal errorformat=%ABDF\ %trror\ on\ line\ %l:\ %m,
      \%-Z%p^,
      \%Cbdftopcf:\ bdf\ input\\,\ %f\\,\ corrupt,
      \%-G%.%#

let &cpo = s:cpo_save
unlet s:cpo_save