Stupic question, I assume...
In a scheme function I have a symbol that is the name of a lilypond
expression. How can I get its music value?
E.g.
ifDefined =
#(define-music-function
(parser location sym)
(symbol?)
(if (defined? sym)
??? return the value of the expression ???
(make-music 'SequentialMusic 'void #t)))
So I can write:
\ifDefined #'myNotes
and have it expand to myNotes (if defined), or a void music expression
otherwise.
-- Johan
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