else if (qualifies (i))
{
Pointer_group_interface::add_grob (valign_, ly_symbol2scm ("elements"), i.grob ());
- i.grob ()->set_object ("staff-grouper", valign_->self_scm ());
+ if (!unsmob_grob (i.grob ()->get_object ("staff-grouper")))
+ i.grob ()->set_object ("staff-grouper", valign_->self_scm ());
}
}