patch 8.2.2750: Vim9: error for using underscore in nested function Commit: https://github.com/vim/vim/commit/da479c7597a61c4d50c842df21c9294bd9bf1037 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Apr 10 21:01:38 2021 +0200 patch 8.2.2750: Vim9: error for using underscore in nested function Problem: Vim9: error for using underscore in nested function. Solution: Do not consider "_" already defined. (closes https://github.com/vim/vim/issues/8096)