From 5d3f3288d221c2e1bbe7c7d1464171ac0a4cfb05 Mon Sep 17 00:00:00 2001
From: Eli Zaretskii <eliz@gnu.org>
Date: Sun, 15 Oct 2023 12:37:25 +0300
Subject: [PATCH] ; * doc/emacs/search.texi (Regexp Backslash): Improve
 indexing.

---
 doc/emacs/search.texi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/doc/emacs/search.texi b/doc/emacs/search.texi
index e5542a0fcf3..66a55f09220 100644
--- a/doc/emacs/search.texi
+++ b/doc/emacs/search.texi
@@ -1158,6 +1158,8 @@ surrounding @samp{\( @dots{} \)} grouping can limit the grouping power of
 
 Full backtracking capability exists to handle multiple uses of @samp{\|}.
 
+@cindex sub-expressions, in regular expressions
+@cindex grouping, in regular expressions
 @item \( @dots{} \)
 is a grouping construct that serves three purposes:
 
-- 
2.39.2