Re: calling a music variable using a Scheme function

[Reinhold Kainhofer]

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Am Donnerstag, 3. September 2009 10:47:52 schrieb Valentin Villenave:
> - why does scorify-music fail here?
>
> includeList =
> #(define-music-function (parser location variable-names) (list?)
>   (map (lambda (variable-name)
>          (let ((music (make-this-music variable-name))
>                ; WTF???
>                ;(score (scorify-music music parser))

You have to use let* instead of let. With let* the definitions are evaluated in 
the given order and can depend on each other. With let, you cannot use one of 
the variables in the value of another.

> - how can I add a \header block for each \score produced 

In the OrchestralLily package (http://www.repo.or.cz/w/orchestrallily.git), 
I'm using this to assign a piece name to a score:

#(define (oly:set_piece_header score piecename)
  (if (not-null? piecename)
    (let* ((header (make-module)))
      (module-define! header 'piece piecename)
      (ly:score-set-header! score header)))

Call it like
   (oly:set_piece_header score "Piecetitle")


> (I can't
> figure out where to insert an add-text in this snippet)?

add-text is like add-score, except that it adds a toplevel-markup instead of a 
score. You can call it anywhere you would also call add-score. However, if you 
want the piece name formatting to take place, then you'll have to assign a 
proper header block as given above.

Cheers,
Reinhold

- -- 
- ------------------------------------------------------------------
Reinhold Kainhofer, address@hidden, http://reinhold.kainhofer.com/
 * Financial & Actuarial Math., Vienna Univ. of Technology, Austria
 * http://www.fam.tuwien.ac.at/, DVR: 0005886
 * LilyPond, Music typesetting, http://www.lilypond.org
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