patch 8.2.4428: crash when switching tabpage while in the cmdline window Commit: https://github.com/vim/vim/commit/0f6e28f686dbb59ab3b562408ab9b2234797b9b1 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 20 20:49:35 2022 +0000 patch 8.2.4428: crash when switching tabpage while in the cmdline window Problem: Crash when switching tabpage while in the cmdline window. Solution: Disallow switching tabpage when in the cmdline window.