FcPublic FcCharSet*
FcCharSetSubtract (const FcCharSet *a, const FcCharSet *b);
-FcPublic FcCharSet *
-FcCharSetMerge (FcCharSet *a, const FcCharSet *b);
+FcPublic FcBool
+FcCharSetMerge (FcCharSet *a, const FcCharSet *b, FcBool *changed);
FcPublic FcBool
FcCharSetHasChar (const FcCharSet *fcs, FcChar32 ucs4);
FcPublic FcChar32
FcLangSetHash (const FcLangSet *ls);
+FcPublic FcStrSet *
+FcLangSetGetLangs (const FcLangSet *ls);
+
/* fclist.c */
FcPublic FcObjectSet *
FcObjectSetCreate (void);