runtime: Set b:undo_indent where missing (#12944) Commit: https://github.com/vim/vim/commit/0382f05dbd659d8e39ee4e71c1e5062ac5c0a8fd Author: dkearns <dougkearns@gmail.com> Date: Tue Aug 29 05:32:59 2023 +1000 runtime: Set b:undo_indent where missing (https://github.com/vim/vim/issues/12944) Signed-off-by: Christian Brabandt <cb@256bit.org>

" Vim indent file
" Language:	generic Changelog file
" Maintainer:	noone
" Last Change:	2005 Mar 29

" Only load this indent file when no other was loaded.
if exists("b:did_indent")
   finish
endif
let b:did_indent = 1

setlocal ai

let b:undo_indent = "setl ai<"