- {
- Music_output *output = unsmob_music_output (scm_car (outputs));
-
- if (Performance *perf = dynamic_cast<Performance *> (output))
- output_paper_book->add_performance (perf->self_scm ());
- else if (Paper_score *pscore = dynamic_cast<Paper_score *> (output))
- {
- if (ly_is_module (score->get_header ()))
- output_paper_book->add_score (score->get_header ());
- output_paper_book->add_score (pscore->self_scm ());
- }
-
- outputs = scm_cdr (outputs);
- }
+ {
+ Music_output *output = unsmob<Music_output> (scm_car (outputs));
+
+ if (Performance *perf = dynamic_cast<Performance *> (output))
+ {
+ output_paper_book->add_performance (perf->self_scm ());
+ // Associate the performance with a \header block (if there is
+ // one in effect in the scope of the current score), to make the
+ // header metadata accessible when outputting the performance.
+ if (ly_is_module (score->get_header ()))
+ perf->set_header (score->get_header ());
+ else if (ly_is_module (output_paper_book->header_))
+ perf->set_header (output_paper_book->header_);
+ else if (ly_is_module (output_paper_book->header_0_))
+ perf->set_header (output_paper_book->header_0_);
+ }
+ else if (Paper_score *pscore = dynamic_cast<Paper_score *> (output))
+ {
+ if (ly_is_module (score->get_header ()))
+ output_paper_book->add_score (score->get_header ());
+ output_paper_book->add_score (pscore->self_scm ());
+ }
+
+ outputs = scm_cdr (outputs);
+ }