Re: modular "markup" and arguments

[Bric]

On 11/05/2013 03:08 PM, David Kastrup wrote:
> Paul Morris <address@hidden> writes:
>
> > But I think what you really want is a music function:
> >
> > \version "2.17.29"
> >
> > boo =
> > #(define-music-function
> >       (parser location the-music)
> >       (ly:music?)
> >     #{
> >       \override NoteHead.color = #red
> >       #the-music
> >       \revert NoteHead.color
> >     #})
> >
> > \relative c' { c4 d e f \boo { g a b } c d e }
> For such fixed override/revert pairings you should write
> \temporary\override in the music function instead of just \override:
> otherwise any previous \override NoteHead.color = #blue will get
> overwritten and not get restored afterwards.


You rock!  This forum rocks!  Lilypond rocks!

That said:  how do I parametrize \boo ?

With the color as parameter, for example, for something like:

 c4 d e f \boo #'red  { g a b } c d e f8 g \boo #'blue { b d a4 d } dis 
e fis

I realize I'm completely clueless about the syntax