Re: Scheme variables and chordmode

[Mats Bengtsson]

Unfortunately, there are some limitations on what you can do, 
syntactically,
within a #{ ... #} construct and you have hit upon one of these limitations.
If you read section "Building complicated functions" in the manual, you will
see how to handle such cases using pure Scheme constructs.


   /Mats

Timothy S. Nelson wrote:
>     Hi all.  I'm a programmer, but a scheme beginner.  I'm using the
> following code.
>
> ------------------------------------------------------------
>
> dostroke = #(define-music-function (parser location chord length) 
> (ly:music? num
> ber?)
>         #{
>                 \chordmode { e,$length:5.8 }
>         #}
> )
>
> ------------------------------------------------------------
>
>         I presume you can all see what I'm trying to achieve here.  
> However, I
> can't get it to work, because it says "Parsing...ERROR: Unbound variable:
> length:5.8".  The other variations I've tried all also give errors.  
> Is there some way I can do this using chordmode, or do I have to do it 
> the long way?
>
>     Thanks,
>
>
> ---------------------------------------------------------------------
> | Name: Tim Nelson                 | Because the Creator is,        |
> | E-mail: address@hidden    | I am                           |
> ---------------------------------------------------------------------
>
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--
=============================================
        Mats Bengtsson
        Signal Processing
        School of Electrical Engineering
        Royal Institute of Technology (KTH)
        SE-100 44  STOCKHOLM
        Sweden
        Phone: (+46) 8 790 8463                         
       Fax:   (+46) 8 790 7260
        Email: address@hidden
        WWW: http://www.s3.kth.se/~mabe
=============================================