hb_ot_tag_from_language ()

hb_tag_t
hb_ot_tag_from_language (hb_language_t language);

hb_ot_tag_to_language ()

hb_language_t
hb_ot_tag_to_language (hb_tag_t tag);

Since 1.0

hb_ot_tag_to_script ()

hb_script_t
hb_ot_tag_to_script (hb_tag_t tag);

hb_ot_tags_from_script ()

void
hb_ot_tags_from_script (hb_script_t script,
                        hb_tag_t *script_tag_1,
                        hb_tag_t *script_tag_2);

HB_OT_TAG_DEFAULT_LANGUAGE

#define HB_OT_TAG_DEFAULT_LANGUAGE HB_TAG ('d', 'f', 'l', 't')

HB_OT_TAG_DEFAULT_SCRIPT

#define HB_OT_TAG_DEFAULT_SCRIPT HB_TAG ('D', 'F', 'L', 'T')