patch 8.0.1431: MS-Windows: vimtutor fails if %TMP% has special chars commit https://github.com/vim/vim/commit/0cbcd949e15ad95171e5b33881d3a30f17073dda Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jan 26 22:22:55 2018 +0100 patch 8.0.1431: MS-Windows: vimtutor fails if %TMP% has special chars Problem: MS-Windows: vimtutor fails if %TMP% has special chars. Solution: Add quotes. (Tamce, closes https://github.com/vim/vim/issues/2561)

" Settings for test script execution
" Always use "sh", don't use the value of "$SHELL".
set shell=sh

" Only when the +eval feature is present. 
if 1
  " While some tests overwrite $HOME to prevent them from polluting user files,
  " we need to remember the original value so that we can tell external systems
  " where to ask about their own user settings.
  let g:tester_HOME = $HOME
endif

source setup.vim