patch 8.2.1572: Vim9: expand() does not take "true" as argument Commit: https://github.com/vim/vim/commit/551d25e76545df785a9f62df52f34bc1dd368bfb Author: Bram Moolenaar <Bram@vim.org> Date: Wed Sep 2 21:37:56 2020 +0200 patch 8.2.1572: Vim9: expand() does not take "true" as argument Problem: Vim9: expand() does not take "true" as argument. Solution: Use tv_get_bool_chk(). (closes https://github.com/vim/vim/issues/6819)