patch 8.2.2021: Vim9: get E1099 when autocommand resets did_emsg Commit: https://github.com/vim/vim/commit/eeece9e4885df6190d2615b199efa2b1d22c4bdb Author: Bram Moolenaar <Bram@vim.org> Date: Fri Nov 20 19:26:48 2020 +0100 patch 8.2.2021: Vim9: get E1099 when autocommand resets did_emsg Problem: Vim9: get E1099 when autocommand resets did_emsg. Solution: Add did_emsg_cumul. (closes https://github.com/vim/vim/issues/7336)