From de0524ff7d7d9ea2a5a73c30a1e7b1214f7db5e6 Mon Sep 17 00:00:00 2001
From: Hal Abelson <edu/mit/hal>
Date: Thu, 16 May 1991 17:47:23 +0000
Subject: [PATCH] Fix think-o in M-x rmail-reply.

---
 v7/src/edwin/rmail.scm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/v7/src/edwin/rmail.scm b/v7/src/edwin/rmail.scm
index 00c027b66..472ef833d 100644
--- a/v7/src/edwin/rmail.scm
+++ b/v7/src/edwin/rmail.scm
@@ -1,6 +1,6 @@
 ;;; -*-Scheme-*-
 ;;;
-;;;	$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/edwin/rmail.scm,v 1.4 1991/05/15 19:10:11 cph Exp $
+;;;	$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/edwin/rmail.scm,v 1.5 1991/05/16 17:47:23 hal Exp $
 ;;;
 ;;;	Copyright (c) 1991 Massachusetts Institute of Technology
 ;;;
@@ -888,7 +888,7 @@ original message into it."
 			(or (and resent-reply-to
 				 (fetch-last-field "resent-subject" start end))
 			    (fetch-first-field "subject" start end))))
-		   (if (string-prefix-ci? "re: " subject)
+		   (if (and subject (string-prefix-ci? "re: " subject))
 		       (string-tail subject 4)
 		       subject))
 		 (if resent-reply-to
-- 
2.25.1