(xfont_has_char): Special handling of `ja' and `ko' adstyle.

src/ChangeLog

 2009-04-16  Kenichi Handa  <handa@m17n.org>
+	* xfont.c (xfont_has_char): Special handling of `ja' and `ko'
+	adstyle.
+
+	* xftfont.c (xftfont_has_char): Special handling of `ja' and `ko'
+	adstyle.
+
+	* ftfont.c (Qja, Qko): Don't make them static.
+	(enum ftfont_cache_for): New enum.
+	(fc_charset_table): Undo the previous change.
+	(ftfont_get_latin1_charset): Delete it.
+	(ftfont_pattern_entity): Check cache by ftfont_lookup_cache.  Set
+	FONT_SIZE_INDEX of the entity to 0 for a scalable font.  For a
+	non-scarable font, try to get AVERAGE_WIDTH.
+	(ftfont_lookup_cache): Argument FOR-FACE is changed to CACHE_FOR.
+	Change ft_face_cache from a list of a hash-table.  Don't check
+	`ja' and `ko' adstyle here.
+	(ftfont_get_fc_charset): Call ftfont_lookup_cache with
+	FTFONT_CACHE_FOR_CHARET.
+	(ftfont_get_charset): Undo the previous change.
+	(ftfont_open): Call ftfont_lookup_cache with
+	FTFONT_CACHE_FOR_FACE.
+	(ftfont_close): Likewise.
+	(ftfont_has_char): Special handling of `ja' and `ko' adstyle.
+
+	* font.c (font_sort_entites): Change the meaning of the arg
+	BEST-ONLY.  Don't optimize for VEC of lenght 1.
+	(font_select_entity): Just return the value of font_sort_entites.
+
+	* xfaces.c (merge_face_vectors): Reflect font properties in
+	to[LFACE_FONT_INDEX] to the other face attributes.  Don't call
+	font_clear_prop if a face attribute doesn't change.
+
 	* charset.h (charset_ksc5601): Extern it.
 	* charset.c (charset_ksc5601): New variable.

src/xfont.c

@@ -792,17 +792,33 @@ xfont_prepare_face (f, face)
   return 0;
 }
 
+extern Lisp_Object Qja, Qko;
+
 static int
-xfont_has_char (entity, c)
-     Lisp_Object entity;
+xfont_has_char (font, c)
+     Lisp_Object font;
      int c;
 {
-  Lisp_Object registry = AREF (entity, FONT_REGISTRY_INDEX);
+  Lisp_Object registry = AREF (font, FONT_REGISTRY_INDEX);
   struct charset *encoding;
-  struct charset *repertory;
-
-  if (font_registry_charsets (registry, &encoding, &repertory) < 0)
-    return -1;
+  struct charset *repertory = NULL;
+
+  if (EQ (registry, Qiso10646_1))
+    {
+      /* We use a font of `ja' and `ko' adstyle only for a character
+	 in JISX0208 and KSC5601 charsets respectively.  */
+      if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qja)
+	  && charset_jisx0208 >= 0)
+	encoding = repertory = CHARSET_FROM_ID (charset_jisx0208);
+      else if (EQ (AREF (font, FONT_ADSTYLE_INDEX), Qko)
+	       && charset_ksc5601 >= 0)
+	encoding = repertory = CHARSET_FROM_ID (charset_ksc5601);
+      else
+	encoding = CHARSET_FROM_ID (charset_unicode);
+    }
+  else if (font_registry_charsets (registry, &encoding, &repertory) < 0)
+    /* Unknown REGISTRY, not usable.  */
+    return 0;
   if (ASCII_CHAR_P (c) && encoding->ascii_compatible_p)
     return 1;
   if (! repertory)