Re: Why doesn't this work?

[Mats Bengtsson]

I have not idea why it doesn't work. However, if you look in 
ly/music-functions-init.ly,
you will notice that the \tweak command itself is implemented using 
music functions,
so one possibility is to use that definition as a starting point and 
modify it to do
what you want, for example:

blaa = #(define-music-function (parser location Note) (ly:music?)
          (set!
           (ly:music-property Note 'tweaks)
           (acons 'color blue
                  (ly:music-property Note 'tweaks)))
          Note)

   /Mats

Roland Goretzki wrote:
> Hi,
>
> using 2.10.20
>
> I tried to define the following:
>
>   blau = #(define-music-function (parser location Note) (ly:music?)
>          #{ \tweak #'color #blue $Note #})
>
> But it doesn't seem to work ...
> Is there a mistake in the syntax or isn't it possible to define
> music-functions including the "\tweak"?
>
> Can somebody help me, please?
>
> Best Regards           Roland
>
>
> _______________________________________________
> lilypond-user mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/lilypond-user
>   

--
=============================================
        Mats Bengtsson
        Signal Processing
        Signals, Sensors and Systems
        Royal Institute of Technology
        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
=============================================