(face_for_char): If face->fontset is negative, just return ascii_face.

src/ChangeLog

@@ -1,3 +1,11 @@
+2008-10-09  Kenichi Handa  <handa@m17n.org>
+
+	* fontset.c (face_for_char): If face->fontset is negative, just
+	return ascii_face.
+
+	* font.c (font_delete_unmatched): Fix previous change.  Don't
+	reject an entity if DPI and AVGWIDTH of an entity are 0.
+
 2008-10-09  Martin Rudalics  <rudalics@gmx.at>
 
 	* frame.c (Fraise_frame): On text-only terminals select frame in

src/fontset.c

@@ -876,7 +876,11 @@ face_for_char (f, face, c, pos, object)
   int face_id;
   int id;
 
-  if (ASCII_CHAR_P (c))
+  /* If face->fontset is negative (that happens when no font is found
+     for face), just return face->ascii_face because we can't do
+     anything.  Perhaps, we should fix the callers to assure
+     that face->fontset is always valid.  */
+  if (ASCII_CHAR_P (c) || face->fontset < 0)
     return face->ascii_face->id;
 
   xassert (fontset_id_valid_p (face->fontset));