--- ../rxvt-unicode-9.02-orig/src/rxvtfont.C	2008-01-27 00:07:30 +0900
+++ src/rxvtfont.C	2008-03-22 01:26:19 +0900
@@ -794,14 +794,17 @@
   char *registry = get_property (f, term->xa [XA_CHARSET_REGISTRY], 0);
   char *encoding = get_property (f, term->xa [XA_CHARSET_ENCODING], 0);
 
+  cs = CS_UNKNOWN;
   if (registry && encoding)
     {
       char charset[64];
       snprintf (charset, 64, "%s-%s", registry, encoding);
 
       cs = codeset_from_name (charset);
+      if (cs == CS_UNKNOWN)
+        fprintf(stderr, "unknown encoding \"%s\" (source: font properties)\n", charset);
     }
-  else
+  if (cs == CS_UNKNOWN)
     {
       const char *charset = get_property (f, XA_FONT, 0);
 
@@ -814,6 +817,8 @@
           break;
 
       cs = codeset_from_name (charset);
+      if (cs == CS_UNKNOWN)
+        fprintf(stderr, "unknown encoding \"%s\" (source: font name)\n", charset);
     }
 
   free (registry);