From e8f20b77af5e9333a4bae27d6f6ed4ea5ae9dd16 Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Tue, 23 Jul 2002 19:08:14 +0000
Subject: [PATCH] (Fmessage): Treat "" like nil.

---
 src/editfns.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/editfns.c b/src/editfns.c
index 2244668649e..e8b12d76a3c 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -2918,7 +2918,9 @@ usage: (message STRING &rest ARGS)  */)
      int nargs;
      Lisp_Object *args;
 {
-  if (NILP (args[0]))
+  if (NILP (args[0])
+      || (STRINGP (args[0])
+	  && SBYTES (args[0]) == 0))
     {
       message (0);
       return Qnil;
-- 
2.30.2