+MAKE_SCHEME_CALLBACK(Push_property_iterator,once_finalization, 2);
+SCM
+Push_property_iterator::once_finalization (SCM trans, SCM music)
+{
+ Music * mus = unsmob_music (music);
+ Translator_group *tg
+ = dynamic_cast<Translator_group*> (unsmob_translator (trans));
+
+ SCM sym = mus->get_mus_property ("symbol");
+ if (check_grob (mus, sym))
+ {
+ SCM eprop = mus->get_mus_property ("grob-property");
+
+ Translator_def::apply_pushpop_property (tg, sym, eprop, SCM_UNDEFINED);
+ }
+ return SCM_UNSPECIFIED;
+}
+
+void
+Push_property_iterator::do_quit ()
+{
+ if (to_boolean (get_music ()->get_mus_property ("once")))
+ {
+ SCM trans = report_to()->self_scm();
+ SCM music = get_music ()->self_scm();
+
+ Global_translator * tg= report_to()->top_translator ();
+ tg->add_finalization (scm_list_n (once_finalization_proc,
+ trans, music, SCM_UNDEFINED));
+ }
+}
+