+Translator::derived_mark () const
+{
+}
+
+int
+Translator::print_smob (SCM s, SCM port, scm_print_state *)
+{
+ Translator *me = (Translator *) SCM_CELL_WORD_1 (s);
+ scm_puts ("#<Translator ", port);
+ scm_puts (me->class_name (), port);
+ scm_puts (" >", port);
+ return 1;
+}
+
+void
+add_acknowledger (Engraver_void_function_engraver_grob_info ptr,
+ char const *func_name,
+ vector<Acknowledge_information> *ack_array)
+{
+ Acknowledge_information inf;
+ inf.function_ = ptr;
+
+ string interface_name (func_name);
+
+ interface_name = replace_all (interface_name, '_', '-');
+ interface_name += "-interface";
+
+ /*
+ this is only called during program init, so safe to use scm_gc_protect_object ()
+ */
+ inf.symbol_ = scm_gc_protect_object (ly_symbol2scm (interface_name.c_str ()));
+ ack_array->push_back (inf);
+}
+
+Engraver_void_function_engraver_grob_info
+generic_get_acknowledger (SCM sym, vector<Acknowledge_information> const *ack_array)