===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/cmd.c,v
retrieving revision 1.90
retrieving revision 1.91
diff -u -r1.90 -r1.91
--- src/usr.bin/tmux/cmd.c	2014/01/09 14:20:55	1.90
+++ src/usr.bin/tmux/cmd.c	2014/03/31 21:32:31	1.91
@@ -1,4 +1,4 @@
-/* $OpenBSD: cmd.c,v 1.90 2014/01/09 14:20:55 nicm Exp $ */
+/* $OpenBSD: cmd.c,v 1.91 2014/03/31 21:32:31 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -138,6 +138,9 @@
 {
 	size_t	arglen;
 	int	i;
+
+	if (argc == 0)
+		return (0);
 
 	*buf = '\0';
 	for (i = 0; i < argc; i++) {