>
> To do something like you want, you really would need access to context
> properties....
>
Ok — good to know I haven't missed some simple solution.
It seems like there ought to be some way of smuggling information out of an
\applyContext. But I guess there's a variable scope issue that keeps you
from doing it straightforwardly:
k = "OOPS"
text = #(define-music-function (parser location music) (ly:music?)
#{
\applyContext
#(lambda (context)
(set! k
(ly:context-property context 'tonic))
(display k)
)
\transpose #(ly:make-pitch 0 0) #k #music
#}
)
\score {
\new Staff {
\key a \major
\test { Fa So La fa so }
}
}
In that code, the (display k) works fine, displaying #<Pitch a>. But then the
\transpose #(ly:make-pitch 0 0) #k #music gets ahold of the global
definition of #k rather than the local one and so you end up with a type
error: expecting pitch, found "OOPS".
So maybe the question is, does Lilypond Scheme have anything like global
variables?
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