patch 8.2.2805: Vim9: cannot use legacy syntax in Vim9 script Commit: https://github.com/vim/vim/commit/96cf4ba8fb96e5778192d2dab7458b9a7da0a49d Author: Bram Moolenaar <Bram@vim.org> Date: Sat Apr 24 14:15:41 2021 +0200 patch 8.2.2805: Vim9: cannot use legacy syntax in Vim9 script Problem: Vim9: cannot use legacy syntax in Vim9 script. Solution: Add the :legacy command.

" 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