patch 8.2.1996: Vim9: invalid error for argument of extend() Commit: https://github.com/vim/vim/commit/193f6201b4d5c76f8dc1faa1dcf369575d93fe3a Author: Bram Moolenaar <Bram@vim.org> Date: Mon Nov 16 20:08:35 2020 +0100 patch 8.2.1996: Vim9: invalid error for argument of extend() Problem: Vim9: invalid error for argument of extend(). Solution: Check if the type could match. (closes https://github.com/vim/vim/issues/7299)