Either I've found a bug, or (more likely) I don't understand how variables
are passed between Lilypond and Scheme.
Below is an example, where a #(define-music-function...) block receives a
variable, stringone. That variable seems to be accessible (i.e. bound, if
I have my terminology straight) in two places, but not accesible (i.e.
unbound) in the third place.
1. Accesible by Scheme code within #(define-music-function) but outside of
#{ #} block
2. Accessible by Lilypond input within #{ #} block
3. Not accesible by Scheme code within #{ #} block
Why is this, and is there any way to pass a variable, received by
define-music-function, to Scheme code within the #{ #} block?
Thanks in advance,
Marcus
\version "2.9.23"
function = #(define-music-function
(parser location stringone)
(string?)
(let ((stringone (string-append stringone " foo")))
#{
% uncommenting the following line yields "ERROR: Unbound variable:
stringone"
% #(string-append stringone " bar")
c1^\markup { $stringone }
#}))
\relative c'' { \function #"one" }
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