+void
+Span_bar::notify_grobs_of_my_existence (Grob *me)
+{
+ extract_grob_set (me, "elements", elts);
+ vector<Grob *> sortable (elts.begin (), elts.end ());
+ vector_sort (sortable, Grob::vertical_less);
+ for (vsize i = 0; i < sortable.size (); i++)
+ sortable[i]->set_property ("has-span-bar",
+ scm_cons (i != sortable.size () - 1 ? me->self_scm () : scm_from_bool (false),
+ i != 0 ? me->self_scm () : scm_from_bool (false)));
+}
+