patch 8.2.3994: Vim9: extend() complains about type when it was not declared Commit: https://github.com/vim/vim/commit/ad8f2485856eadb931ebd1f633ca366a40e415b8 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jan 3 16:52:28 2022 +0000 patch 8.2.3994: Vim9: extend() complains about type when it was not declared Problem: Vim9: extend() complains about the type even when it was not declared. Solution: Only check the list or dict type when it was declared.