+SCM
+New_dynamic_engraver::get_property_setting (Stream_event *evt, char const *evprop, char const *ctxprop)
+{
+ SCM spanner_type = evt->get_property (evprop);
+ if (spanner_type == SCM_EOL)
+ spanner_type = get_property (ctxprop);
+ return spanner_type;
+}