$NetBSD: patch-aj,v 1.1 2005/03/22 14:57:12 cube Exp $

--- src/mail.c.orig	2005-03-19 17:00:16.000000000 +0100
+++ src/mail.c
@@ -1297,7 +1297,7 @@ check_mh_dir(Mailbox *mbox)
 	while ((name = (gchar *) g_dir_read_name(dir)) != NULL)
 		{
 		/* Files starting with a digit are messages. */
-		if (isdigit(name[0]))
+		if (isdigit((unsigned char)name[0]))
 			mbox->mail_count++;
 		}
 	g_dir_close(dir);
