patch 8.2.2481: Vim9: confusing error when variable arguments have default Commit: https://github.com/vim/vim/commit/4f53b79bf5f8b0de7c6933fd157894ba7a53f35e Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 7 15:59:49 2021 +0100 patch 8.2.2481: Vim9: confusing error when variable arguments have default Problem: Vim9: confusing error when variable arguments have a default value. Solution: Give a specific error message. (closes #7793)