patch 8.2.1578: Vim9: popup_clear() does not take "true" as argument Commit: https://github.com/vim/vim/commit/62f93f4ec9db1deca088bab7783a35306e2ed4cb Author: Bram Moolenaar <Bram@vim.org> Date: Wed Sep 2 22:33:24 2020 +0200 patch 8.2.1578: Vim9: popup_clear() does not take "true" as argument Problem: Vim9: popup_clear() does not take "true" as argument. Solution: Use tv_get_bool(). (closes https://github.com/vim/vim/issues/6826)