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.

" Vim filetype plugin file
" Language:	hg (Mercurial) commit file
" Maintainer:	Ken Takata <kentkt at csc dot jp>
" Last Change:	2016 Jan 6
" Filenames:	hg-editor-*.txt
" License:	VIM License
" URL:		https://github.com/k-takata/hg-vim

if exists("b:did_ftplugin")
  finish
endif
let b:did_ftplugin = 1

setlocal nomodeline

let b:undo_ftplugin = 'setl modeline<'