- SCM data = g->get_property_data (axis_offset_symbol (a));
- if (!scm_is_number (data)
- && !ly_is_procedure (data)
- && !unsmob<Simple_closure> (data))
- {
- g->set_property (axis_offset_symbol (a), proc);
- return;
- }
-
- if (ly_is_procedure (data) || unsmob<Unpure_pure_container> (data))
- data = Simple_closure::make_smob (scm_list_1 (data));
- else if (Simple_closure *sc = unsmob<Simple_closure> (data))
- data = sc->expression ();
-
- SCM plus = ly_lily_module_constant ("+");
-
- if (ly_is_procedure (proc))
- proc = Simple_closure::make_smob (scm_list_1 (proc));
-
- SCM expr = scm_list_3 (plus, proc, data);
- g->set_property (axis_offset_symbol (a), Simple_closure::make_smob (expr));
+ SCM sym = axis_offset_symbol (a);
+ SCM data = g->get_property_data (sym);
+ g->set_property (sym, Lily::grob_offset_function (proc, data));