patch 8.1.1387: calling prop_add() in an empty buffer doesn't work commit https://github.com/vim/vim/commit/d79eef2eb1f24b53206c4e55b80a4634f548c429 Author: Bram Moolenaar <Bram@vim.org> Date: Fri May 24 20:41:55 2019 +0200 patch 8.1.1387: calling prop_add() in an empty buffer doesn't work Problem: Calling prop_add() in an empty buffer doesn't work. (Dominique Pelle) Solution: Open the memline before adding a text property. (closes #4412)