commit https://github.com/vim/vim/commit/885f24fbcae2a39ae496ffb3a1e139379be8fae1 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Feb 1 22:54:46 2016 +0100 patch 7.4.1236 Problem: When "syntax manual" was used switching between buffers removes the highlighting. Solution: Set the syntax option without changing the value. (Anton Lindqvist)

" Settings for test script execution
" Always use "COMMAND.COM", don't use the value of "$SHELL".
set shell=c:\COMMAND.COM shellquote= shellxquote= shellcmdflag=/c shellredir=>
" This is used only when the +eval feature is available.
if executable("cmd.exe")
   set shell=cmd.exe
endif