It seems that the (older) MarkAttachmentType lookup flag is not applied by HarfBuzz, while the (newer) UseMarkFilteringSet flag works fine.
Here is the same font font once using MarkAttachmentType and once using UseMarkFilteringSet with the same mark glyph class in both cases (and it is the only one used), and if applied the final dots in the words تختة, تخنة, تخئة, تخثة and تخٹة should be raised up whether vowel marks are used or not. http://khaledhosny.org/files/tmp/hussaini-nastaleeq_MarkAttachmentType.ttf http://khaledhosny.org/files/tmp/hussaini-nastaleeq_UseMarkFilteringSet.ttf Regards, Khaled _______________________________________________ HarfBuzz mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/harfbuzz
