Re: Scheme Problem

[ian_hulin]

Hi Brett,
Just a thought - the normal syntax for \repeat is 

\repeat unfold 9 { <music statements> }

in your declaration you've put the keyword in quotes.  Does it help if you
remove them? E.g. 

--------------------------------------------
compFor = #(define-music-function (parser location beats) (number?)
        #{
            \override Rest #'stencil = 
#ly:percent-repeat-item-interface::beat-slash
            \override Rest #'thickness = #'0.48
            \override Rest #'slope = #'1.7
           
            \repeat unfold $beats { r4 }
           
            \revert Rest #'stencil
        #})
--------------------------------------------
I don't know any of the Lilypond or Scheme internals but there's a chance
that this could be confusing a parser or lexical analyzer somewhere along
the line.  Software diagnostic messages are sometimes just an opener for
negotiation...

Cheers,
Ian


Brett Duncan-2 wrote:
> 
> The following function is an attempt on my part to learn how to create 
> such functions, based on what appears in the User Manual. The function 
> itself is not really important, just a problem I set for myself. It's 
> supposed to take a number as its argument and produce the equivalent 
> number of slashes, the idea being to use the slash as a comping symbol, 
> and substituting the slash for the normal appearance of a quarter rest.
> 
> --------------------------------------------
> compFor = #(define-music-function (parser location beats) (number?)
>         #{
>             \override Rest #'stencil = 
> #ly:percent-repeat-item-interface::beat-slash
>             \override Rest #'thickness = #'0.48
>             \override Rest #'slope = #'1.7
>            
>             \repeat "unfold" $beats { r4 }
>            
>             \revert Rest #'stencil
>         #})
> --------------------------------------------
> 
> But when I put
> 
>     \compFor #16
> 
> into my .ly file, the following error occurs:
> 
> syntax error, unexpected NUMBER_IDENTIFIER, expecting DIGIT or UNSIGNED
>             \repeat "unfold"
>                                          \lilyvartmpb { r4 }
> 
> 
> Can someone point out to me where I'm going wrong?
> 
> Thanks,
> 
> Brett
> 
> -- 
> Brett Duncan
> address@hidden
> 
> "Always do right - this will gratify some and astonish the rest."
> 
> Mark Twain
> 
> 
> _______________________________________________
> lilypond-user mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/lilypond-user
> 
> 

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