patch 8.2.4938: crash when matching buffer with invalid pattern Commit: https://github.com/vim/vim/commit/a59f2dfd0cf9ee1a584d3de5b7c2d47648e79060 Author: Bram Moolenaar <Bram@vim.org> Date: Wed May 11 11:42:28 2022 +0100 patch 8.2.4938: crash when matching buffer with invalid pattern Problem: Crash when matching buffer with invalid pattern. Solution: Check for NULL regprog.

" 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