Aaron Hill <lilyp...@hillvisions.com> writes:
> On 2020-03-08 3:57 pm, Stephan Schöll wrote:
>> It looks as if the "output" (return value) of a function can only be of
>> type "music", not "score", "book" aso, which would disappoint me. Am I
>> right? Or is there a way to define/change the type of the return value?
>
> Music functions are for music. Books and scores are not music.
>
> Scheme functions are capable of returning arbitrary information.
> Scores, for instance, can be returned and handled properly. Books
> cannot.
>
> => David K., do you know why the parser balks at such a top-level
> ly:book?
How can a book be distinguished from a bookpart? Without an answer to
that question, we cannot implement this. But have you tried explicitly
using
\book { ... }
for getting a book?
--
David Kastrup
