Fri Jul 25 22:59:13 2003  Owen Taylor  <otaylor@redhat.com>

        * pango/opentype/ftx{gpos,gsub}.h pango/opentype/ftxgdef.c:
        Add GPOS_LOOKUP_EXTENSION, GSUB_LOOKUP_EXTENSION, which
        allow lookup information to be stored at 32-bit offets
        via a double indirection. (From FreeType, Werner Lemberg,
	2001-08-08)

Index: ftxopen.c
===================================================================
RCS file: /cvs/gnome/pango/pango/opentype/ftxopen.c,v
retrieving revision 1.8
retrieving revision 1.10
diff -u -p -r1.8 -r1.10
--- ftxopen.c	15 Apr 2003 22:15:41 -0000	1.8
+++ ftxopen.c	26 Jul 2003 13:20:52 -0000	1.10
@@ -584,6 +584,8 @@
 
     TTO_SubTable*  st;
 
+    FT_Bool        is_extension = FALSE;
+
 
     base_offset = FILE_Pos();
 
@@ -603,6 +605,10 @@
 
     st = l->SubTable;
 
+    if ( ( type == GSUB && l->LookupType == GSUB_LOOKUP_EXTENSION ) ||
+         ( type == GPOS && l->LookupType == GPOS_LOOKUP_EXTENSION ) )
+      is_extension = TRUE;
+
     for ( n = 0; n < count; n++ )
     {
       if ( ACCESS_Frame( 2L ) )
@@ -613,6 +619,19 @@
       FORGET_Frame();
 
       cur_offset = FILE_Pos();
+
+      if ( is_extension )
+      {
+        if ( FILE_Seek( new_offset ) || ACCESS_Frame( 8L ) )
+          goto Fail;
+
+        (void)GET_UShort();                     /* format should be 1 */
+        l->LookupType = GET_UShort();
+        new_offset = GET_ULong() + base_offset;
+
+        FORGET_Frame();
+      }
+
       if ( FILE_Seek( new_offset ) ||
            ( error = Load_SubTable( &st[n], stream,
                                     type, l->LookupType ) ) != TT_Err_Ok )