From 2221451f5b42937f978a10a64e6ed6e409d43d7e Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Tue, 18 Dec 2001 02:15:53 +0000
Subject: [PATCH] (Fcompare_buffer_substrings): Add QUIT to main loop.

---
 src/editfns.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/editfns.c b/src/editfns.c
index f8edbadc05a..9c118cc67b1 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -2473,6 +2473,8 @@ determines whether case is significant or ignored.  */)
 	 characters, not just the bytes.  */
       int c1, c2;
 
+      QUIT;
+
       if (! NILP (bp1->enable_multibyte_characters))
 	{
 	  c1 = BUF_FETCH_MULTIBYTE_CHAR (bp1, i1_byte);
-- 
2.39.5