runtime: Set b:undo_indent where missing (#12944)
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/indent/rst.vim b/runtime/indent/rst.vim
index a31ad8e..e3c1086 100644
--- a/runtime/indent/rst.vim
+++ b/runtime/indent/rst.vim
@@ -4,6 +4,7 @@
" Maintainer: Marshall Ward <marshall.ward@gmail.com>
" Previous Maintainer: Nikolai Weibull <now@bitwi.se>
" Latest Revision: 2020-03-31
+" 2023 Aug 28 by Vim Project (undo_indent)
if exists("b:did_indent")
finish
@@ -14,6 +15,8 @@
setlocal indentkeys=!^F,o,O
setlocal nosmartindent
+let b:undo_indent = "setlocal indentexpr< indentkeys< smartindent<"
+
if exists("*GetRSTIndent")
finish
endif