patch 8.2.4505: Vim9: outdated "autocmd nested" still works Commit: https://github.com/vim/vim/commit/f07751457c39a645009c17cd837131f6bcdd7d55 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Mar 4 20:10:38 2022 +0000 patch 8.2.4505: Vim9: outdated "autocmd nested" still works Problem: Vim9: outdated "autocmd nested" still works. Solution: Do not accept the :autocmd argument "nested" without "++" in Vim9 script.

" 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