2010/12/16 Rob Canning <r...@goto10.org>:
> David Kastrup said :
>> r...@goto10.org writes:
>>
>> > beza #0.4
>> >
>> > feeding into something like this: (which doesn't work)
>> >
>> > beza = #(define-music-function (parser location thickness) (number?)
>> > #{
>> > \bezier #'( 0.1 1.0 0.15 1.0 $number )
>> > #})
>>
>> What happens if you write $thickness instead?
>
>
>
> here is a simplified version of the problem and the lilypond error:
>
> hpRot = #(define-music-function (parser location rot) (list?)
> #{
> \once \override Hairpin #'rotation = $rot
> #})
>
> fooBar = #(define-music-function (parser location zabadoo) (number?)
> #{
> { a b c d \hpRot #'($zabadoo 0 1) s2^\< s s s \! }
> #})
>
> \fooBar #3
>
>
> Drawing systems.../usr/share/lilypond/2.12.2/scm/layout-page-layout.scm:53:9:
> In
> procedure ly:system-print in expression (ly:system-print sys):
> /usr/share/lilypond/2.12.2/scm/layout-page-layout.scm:53:9: Wrong type
> (expecting real number): lilyvartmpc
>
>
>
> from what i can guess the variable is not being evaluated but instead being
> passed as lilyvartmpc ...
>
in that case, try
try #(list $zabadoo 0 1) instead of #'($zabadoo 0 1)
... I havent tested it myself though...
> thanks
>
> rob
>
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