runtime: Set b:undo_indent where missing (#12944)
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/indent/logtalk.vim b/runtime/indent/logtalk.vim
index 8e36f86..f7a8b03 100644
--- a/runtime/indent/logtalk.vim
+++ b/runtime/indent/logtalk.vim
@@ -1,5 +1,6 @@
" Maintainer: Paulo Moura <pmoura@logtalk.org>
" Revised on: 2018.08.04
+" 2023 Aug 28 by Vim Project (undo_indent)
" Language: Logtalk
" This Logtalk indent file is a modified version of the Prolog
@@ -16,6 +17,8 @@
setlocal indentkeys-=:,0#
setlocal indentkeys+=0%,-,0;,>,0)
+let b:undo_indent = "setlocal indentexpr< indentkeys<"
+
" Only define the function once.
if exists("*GetLogtalkIndent")
finish