patch 8.1.1968: crash when using nested map() Commit: https://github.com/vim/vim/commit/27da7de7c547dbf983ed7dd901ea59be4e7c9ab2 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Sep 3 17:13:37 2019 +0200 patch 8.1.1968: crash when using nested map() Problem: Crash when using nested map(). Solution: Clear the pointer in prepare_vimvar(). (Ozaki Kiichi, closes #4890, closes #4891)

" 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