[GX] Add hb_ot_layout_table_find_feature_variations()
diff --git a/src/hb-ot-layout.h b/src/hb-ot-layout.h
index eb23d45..2e3db8c 100644
--- a/src/hb-ot-layout.h
+++ b/src/hb-ot-layout.h
@@ -95,6 +95,7 @@
#define HB_OT_LAYOUT_NO_SCRIPT_INDEX 0xFFFFu
#define HB_OT_LAYOUT_NO_FEATURE_INDEX 0xFFFFu
#define HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX 0xFFFFu
+#define HB_OT_LAYOUT_NO_VARIATIONS_INDEX 0xFFFFFFFFu
HB_EXTERN unsigned int
hb_ot_layout_table_get_script_tags (hb_face_t *face,
@@ -236,6 +237,15 @@
void *user_data);
#endif
+/* Variations support */
+
+HB_EXTERN hb_bool_t
+hb_ot_layout_table_find_feature_variations (hb_face_t *face,
+ hb_tag_t table_tag,
+ const int *coords,
+ unsigned int num_coords,
+ unsigned int *variations_index /* out */);
+
/*
* GSUB
