$NetBSD: patch-ai,v 1.2 2005/04/13 16:45:46 rillig Exp $

--- charset/xenc.c.orig	2005-04-06 23:29:15.000000000 +0200
+++ charset/xenc.c	2005-04-06 23:29:31.000000000 +0200
@@ -80,7 +80,7 @@
 	p = name;
 	q = xencs[i].name;
 	while (*p || *q) {
-	    if (tolower(*p) != tolower(*q))
+	    if (tolower((unsigned char)*p) != tolower((unsigned char)*q))
 		break;
 	    p++; q++;
 	}