patch 8.1.0840: getchar(0) never returns a character in the terminal commit https://github.com/vim/vim/commit/12dfc9eef14fe74c46145aa9e6cba9666f1bcd40 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jan 28 22:32:58 2019 +0100 patch 8.1.0840: getchar(0) never returns a character in the terminal Problem: getchar(0) never returns a character in the terminal. Solution: Call wait_func() at least once.

" 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