Re: Persian musical koron and sori

[Graham Breed]

Kees van den Doel wrote:
> > Then in "\context" add
> >
> > \override Accidental #'stencil = #ly:text-interface::print
> > \override Accidental #'font-name = #"???"
> > \override Accidental #'font-size = #?
> > \override Accidental #'text = #(lambda (grob)
> >          (cdr (assoc 
> > (ly:grob-property grob 'alteration)
> >                   persianStrings)))
> > \override Accidental #'X-extent = #'(0 . 1)
> > \override Accidental #'Y-extent = #'(-1 . 1)
>
> Works great with the typo's fixed. Is there a way to do this only for koron and 
> sori and render the
> normal accidentals as usual?

There surely is, but it won't be pretty.  You can try:

-- Scheme functions for all these properties, that check if 
the alteration requires the new font, and default to the 
original values if it doesn't.

-- Putting all the \override commands in a variable, and 
calling it with \once when you need it.

-- Writing all the normal accidentals as \markup blocks that 
load the correct glyphs.

Note that if you want two glyphs at the same time for the 
same note they have to be strings or markup.

> > and so on for KeySignature 
>
> If I do the same for KeySignature
>
> \override KeySignature #'text = #(lambda (grob)
>           (cdr (assoc 
>  (ly:grob-property grob 'alteration)
>                    persianStrings)))
>
> gives me an error. It's been almost 20 years since I've used Scheme and I don't 
> remember
> enough to be able to guess what the problem is...

Ah, yes.  That's not going to work.  The key signatures are 
drawn differently to accidentals.  They have to place all 
the glyphs, not only one glyph for a given accidental. 
Maybe somebody on the list can suggest a way to override
them...


                    Graham