+ span_events_[LEFT] = 0;
+ span_events_[RIGHT] = 0;
+}
+
+IMPLEMENT_TRANSLATOR_LISTENER (Staff_symbol_engraver, staff_span);
+void
+Staff_symbol_engraver::listen_staff_span (Stream_event *ev)
+{
+ Direction d = to_dir (ev->get_property ("span-direction"));
+ if (d)
+ ASSIGN_EVENT_ONCE (span_events_[d], ev);
+ else
+ programming_error (_ ("staff-span event has no direction"));