patch 9.0.2181: Vim9: missing error messages Commit: https://github.com/vim/vim/commit/5e133157785dd2fdcfaaecd4822f2793e28b466d Author: Ernie Rael <errael@raelity.com> Date: Tue Dec 19 22:15:27 2023 +0100 patch 9.0.2181: Vim9: missing error messages Problem: Vim9: missing error messages Solution: Add one more error message closes: #13729 Signed-off-by: Ernie Rael <errael@raelity.com> Signed-off-by: Christian Brabandt <cb@256bit.org>

" Vim indent file
" Language:	Mail
" Maintainer:	The Vim Project <https://github.com/vim/vim>
" Last Change:	2023 Aug 13

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=

let b:undo_indent = "setl ai< cin< inde< si<"