+ if (klass == ly_symbol2scm ("Item"))
+ grob = new Item (props);
+ else if (klass == ly_symbol2scm ("Spanner"))
+ grob = new Spanner (props);
+ else if (klass == ly_symbol2scm ("Paper_column"))
+ grob = new Paper_column (props);
+
+ assert (grob);
+ announce_grob (grob, cause);
+
+#ifndef NDEBUG
+ if (ly_is_procedure (creation_callback))
+ scm_apply_0 (creation_callback,
+ scm_list_n (grob->self_scm (), scm_from_locale_string (file),
+ scm_from_int (line), scm_from_locale_string (fun), SCM_UNDEFINED));
+#endif
+
+ return grob;
+}
+
+Item *
+Engraver::internal_make_item (SCM x, SCM cause,
+ char const *name,
+ char const *file, int line, char const *fun)