patch 8.2.1403: Vim9: Vim highlighting may fail in cmdline window Commit: https://github.com/vim/vim/commit/3896a105eb3697b1a399255ac31c742c8840bd69 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Aug 9 14:33:55 2020 +0200 patch 8.2.1403: Vim9: Vim highlighting may fail in cmdline window Problem: Vim9: Vim highlighting fails in cmdline window if it uses Vim9 commands. Solution: Allow using :vim9script, :import and :export while in the cmdline window. (closes #6656)