+static Lisp_Object
+find_char_feature_in_family (Lisp_Object character,
+ Lisp_Object con_feature,
+ Lisp_Object feature,
+ Lisp_Object feature_rel_max)
+{
+ Lisp_Object ancestors
+ = Fget_char_attribute (character, con_feature, Qnil);
+
+ while (!NILP (ancestors))
+ {
+ Lisp_Object ancestor = XCAR (ancestors);
+ Lisp_Object ret;
+
+ if (EQ (ancestor, character))
+ return Qunbound;
+
+ ret = Fchar_feature (ancestor, feature, Qunbound,
+ Qnil, make_int (0));
+ if (!UNBOUNDP (ret))
+ return ret;
+
+ ancestors = XCDR (ancestors);
+
+ ret = Fget_char_attribute (ancestor, Q_subsumptive_from, Qnil);
+ if (!NILP (ret))
+ ancestors = nconc2 (Fcopy_sequence (ancestors), ret);
+
+ ret = Fget_char_attribute (ancestor, Q_denotational_from, Qnil);
+ if (!NILP (ret))
+ ancestors = nconc2 (Fcopy_sequence (ancestors), ret);
+ }
+ return Qunbound;
+}
+