patch 8.2.1019: mapping <M-S-a> does not work in the GUI Commit: https://github.com/vim/vim/commit/ef6746f637adbdb6860b4fa0266c43c49fa498bc Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jun 20 14:43:23 2020 +0200 patch 8.2.1019: mapping <M-S-a> does not work in the GUI Problem: Mapping <M-S-a> does not work in the GUI. Solution: Move the logic to remove the shift modifier to may_remove_shift_modifier() and also use it in the GUI.