commit https://github.com/vim/vim/commit/60422e68a3a555144f8c76c666f050e8d104c16b Author: Bram Moolenaar <Bram@vim.org> Date: Wed Nov 25 23:53:01 2015 +0100 patch 7.4.942 Problem: test_tagcase breaks for small builds. Solution: Bail out of the test early. (Hirohito Higashi)

" 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