patch 8.2.4408: Vim9: some code not covered by tests Commit: https://github.com/vim/vim/commit/ea5c898b5fb60828b0223f258910f84f5c645e63 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Feb 17 14:42:02 2022 +0000 patch 8.2.4408: Vim9: some code not covered by tests Problem: Vim9: some code not covered by tests. Solution: Add a few more tests. Correct error message. Allow unlet on dict with a number key.