commit https://github.com/vim/vim/commit/97b0b0ec764d3a247ef600d809b965d5ab37155d Author: Bram Moolenaar <Bram@vim.org> Date: Thu Nov 19 20:23:37 2015 +0100 patch 7.4.930 Problem: MS-Windows: Most users appear not to like the window border. Solution: Remove WS_EX_CLIENTEDGE. (Ian Halliday)

" 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