Re: Getting back the dynamically coloured freboard dots on L2.20

[Jean Abou Samra]

> I can access the value of the first override from inside
> `make-fret-diagram` , ok.
>
> The second override does not work and I currently don't know why not.
> I can access the value of this override from inside make-fret-diagram as well.
> Though, it's the procedure not it's return value.
>
> Cheers,
>   Harm
>       
      David on -devel:

"Callbacks are not supported for subproperties."

https://lists.gnu.org/archive/html/lilypond-devel/2020-08/msg00024.html

And later:

   I may change that eventually, but that's basically a
   possibility at the bottom of a stack of rather extensive
   purportive changes, so don't hold your breath for it.

That explains why, I think.

Best,
Jean