> static void pack_list(t_pack *x, t_symbol *s, int ac, t_atom *av) > { > if (ac==0) > pack_bang(x); > else > obj_list(&x->x_obj, 0, ac, av); > } Many thanks for this contribution! I will add this to pd-l2ork. However, shouldn't also route output bang when having an empty list? Best wishes, Ico