- SCM definition = scm_car (s);
- bool is_scheme = false;
-
- Translator *type = 0;
- if (ly_is_symbol (definition))
- type = get_translator (definition);
- else if (ly_is_pair (definition))
- {
- type = get_translator (ly_symbol2scm ("Scheme_engraver"));
- is_scheme = true;
- }
- else if (ly_is_procedure (definition))
- {
- // `definition' is a procedure, which takes the context as
- // an argument and evaluates to an a-list scheme engraver
- // definition.
- definition = scm_call_1 (definition, cs);
- type = get_translator (ly_symbol2scm ("Scheme_engraver"));
- is_scheme = true;
- }
-
- if (!type)
- warning (_f ("cannot find: `%s'", ly_symbol2string (scm_car (s)).c_str ()));
+ SCM trans = scm_car (s);
+
+ if (ly_is_symbol (trans))
+ trans = get_translator_creator (trans);
+ if (ly_is_procedure (trans))
+ trans = scm_call_1 (trans, cs);
+ if (ly_cheap_is_list (trans))
+ trans = (new Scheme_engraver (trans, new_context))->unprotect ();
+ Translator *instance = unsmob<Translator> (trans);
+ if (!instance)
+ {
+ warning (_f ("cannot find: `%s'", ly_scm_write_string (trans).c_str ()));
+ continue;
+ }
+
+ if (instance->must_be_last ())
+ {
+ SCM cons = scm_cons (trans, SCM_EOL);
+ if (scm_is_pair (trans_list))
+ scm_set_cdr_x (scm_last_pair (trans_list), cons);
+ else
+ trans_list = cons;
+ }