commit https://github.com/vim/vim/commit/22e421549d54147d003f6444de007cb1d73f1d27 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Apr 3 14:02:02 2016 +0200 patch 7.4.1700 Problem: Equivalence classes are not properly tested. Solution: Add tests for multi-byte and latin1. Fix an error. (Owen Leibman)

" 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