patch 8.0.0594: build failure when windows feature is missing commit https://github.com/vim/vim/commit/66c0e70b806cd8afdc9da9ddae11945ddf29841a Author: Bram Moolenaar <Bram@vim.org> Date: Sun Apr 30 20:46:32 2017 +0200 patch 8.0.0594: build failure when windows feature is missing Problem: Build failure when windows feature is missing. Solution: Add #ifdef.

" 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

source setup.vim