Re: Basic function question

[Urs Liska]

Am 26.07.2011 10:27, schrieb address@hidden:
> On Jul 26, 2011, at 10:14 AM, Urs Liska wrote:
>
> > Hello list members,
> >
> > after fiddling around too long and getting lost with the basics, I decided to 
> > ask my question here.
> > I know it's basic, and I wonder why I get stuck this way, but obviously I'm 
> > confused and unable to find the right place in the docs.
> >
> > I want to write a function "instr" to produce formatted markup that I can use 
> > like
> >
> > { c d e f^\instr "Vl." }
> >
> > which should be translated to (e.g.)
> >
> > { c d e f^\markup \bold \italic \huge { "Vl." } }
> >
> > Unfortunately I seem absolutely unable to find out how to define the function 
> > so I can attach it to the note like in the example.
> >
> > Hopefully someone can either give me a working example or point me to the exact 
> > location in the docs where I can fully understand this issue.
> >
> > Thanks in advance
> > Urs
> To do this, you need to use a music function.
>
> instr = #(define-music-function (parser location m s) (ly:music? string?)
>    (make-music 'EventChord 'elements (append (ly:music-property m 'elements)
>                                              (list (make-music 'TextScriptEvent 
> 'direction 1
>                                                                                 
>  'text (markup #:huge #:bold #:italic s))))))
>
> \instr a4 "foo"
>
> Cheers,
> MS
OK, thank you very much.
I think with this example I can work my way through the doc (analyzing a 
working example is much easier than analyzing error messages ...).

But is it also possible to replace a \markup command with a function as 
in my example above?

Best
Urs