patch 8.2.1729: endless loop when ":normal" feeds popup window filter Commit: https://github.com/vim/vim/commit/189832bf661168df7ebd428e4088737718775fbd Author: Bram Moolenaar <Bram@vim.org> Date: Wed Sep 23 12:29:11 2020 +0200 patch 8.2.1729: endless loop when ":normal" feeds popup window filter Problem: Endless loop when ":normal" feeds popup window filter. Solution: Add the ex_normal_busy_done flag.