patch 8.2.1376: Vim9: expression mapping causes error for using :import Commit: https://github.com/vim/vim/commit/803af686e23c7bb17273bb0c78ff0bf97e8d23f4 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 5 16:20:03 2020 +0200 patch 8.2.1376: Vim9: expression mapping causes error for using :import Problem: Vim9: expression mapping causes error for using :import. Solution: Add EX_LOCK_OK to :import and :export. (closes 3606)