patch 8.1.1675: listener list not correctly updated on listener_remove() commit https://github.com/vim/vim/commit/7b73f914c4fc5a3f7ad97b678cc8137f964e3d62 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jul 13 13:03:02 2019 +0200 patch 8.1.1675: listener list not correctly updated on listener_remove() Problem: Listener list not correctly updated on listener_remove(). Solution: Only set "prev" when not removing a listener. Return one if the listener was found and removed.