commit https://github.com/vim/vim/commit/f416086f264c1d998863b2e600f4c14f799d0d99 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Feb 5 23:09:12 2016 +0100 patch 7.4.1265 Problem: Not all channel commands are tested. Solution: Add a test for "normal", "expr" and "redraw".

" 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