Grob *slur = Grob::unsmob (me->get_object ("slur"));
SCM avoid_slur = me->get_property ("avoid-slur");
if (slur && to_boolean (slur->get_property ("cross-staff"))
Grob *slur = Grob::unsmob (me->get_object ("slur"));
SCM avoid_slur = me->get_property ("avoid-slur");
if (slur && to_boolean (slur->get_property ("cross-staff"))