patch 8.1.1419: listener callbacks may be called recursively commit https://github.com/vim/vim/commit/68a4b04a8d2471adf9de595745437c7cf20b98d8 Author: Bram Moolenaar <Bram@vim.org> Date: Wed May 29 22:28:29 2019 +0200 patch 8.1.1419: listener callbacks may be called recursively Problem: Listener callbacks may be called recursively. Solution: Set "updating_screen" while listener callbacks are invoked.

" Vim indent file
" Language:	Mail
" Maintainer:	Bram Moolenaar
" Last Change:	2009 Jun 03

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

" What works best is auto-indenting, disable other indenting.
" For formatting see the ftplugin.
setlocal autoindent nosmartindent nocindent indentexpr=