patch 8.2.3848: cannot use reduce() for a string Commit: https://github.com/vim/vim/commit/0ccb5842f5fb103763d106c7aa364d758343c35a Author: rbtnn <naru123456789@gmail.com> Date: Sat Dec 18 18:33:46 2021 +0000 patch 8.2.3848: cannot use reduce() for a string Problem: Cannot use reduce() for a string. Solution: Make reduce() work with a string. (Naruhiko Nishino, closes https://github.com/vim/vim/issues/9366)

" 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