Lukas-Fabian Moser <l...@gmx.de> writes:
> Elaborating on David's explanation, it might be instructive to study the
> output of:
>
> \version "2.25.9"
>
> mappingFunction =
> #(define-music-function (music) (ly:music?)
> (music-map
> (lambda (m)
> (ly:message "Considering music:\n~a\n---------\n"
> ((@@ (lily) music->lily-string) m))
> m)
> music))
>
> \mappingFunction
> \new PianoStaff
> <<
> \new Staff \relative { c'4 d e c }
> \new Staff \relative { c' g c c }
>>>
If you don't want to call upon undocumented internals of LilyPond (the
(@@ (lily) ...) bit), you can just use
\version "2.25.9"
mappingFunction =
#(define-music-function (music) (ly:music?)
(music-map
(lambda (m)
(ly:message "Considering music:~a---------\n"
(with-output-to-string (lambda () (displayLilyMusic m))))
m)
music))
\mappingFunction
\new PianoStaff
<<
\new Staff \relative { c'4 d e c }
\new Staff \relative { c' g c c }
>>
--
David Kastrup
