Re: Using Scheme

[Graham Percival]

On 12-May-06, at 11:37 AM, Nicolas Sceaux wrote:
>   manBeam =
>   #(define-music-function (parser location beg-end)
>                           (cons?)
>     #{ \once \override Beam #'positions = #$beg-end #})
>
>   \manBeam #'(3 . 6)
>   \manBeam #(cons 3 6)


Are you sure about that (cons?)  ?  The following gives me this:
GNU LilyPond 2.8.2
Processing `bug.ly'
Parsing...ERROR: Unbound variable: cons?


manualBeam =
#(define-music-function (parser location beg-end)
                        (cons?)
#{
  \once \override Beam #'positions = #$beg-end
#})

\relative {
 c'4
%  \manualBeam #'(3 . 6) c8 d e f
}

Cheers,
- Graham