Re: Octavation syntax consistency (was: grand predefined-command thread)

[Reinhold Kainhofer]

Am Samstag, 28. Juni 2008 schrieb Valentin Villenave:
> This is not really a predef, but for the past couple of weeks I've
> been trying to implement an easier syntax for octavations, e.g.
>
> \octava 1
> or
> \octava #1
>
> instead of
>
> #(set-octavation 1)
>
> Such a command would be much more consistent with the rest of the
> (non-Scheme) LilyPond syntax (not to mention much easier to type,
> since typing the hash character on a French keyboard requires you to
> twist your arm ;-)...
>
> I couldn't come up with a patch, but I thought someone more skilled
> than me could write it in a sec...

Well, you don't need to be skilled too much, but that part about "a sec" is 
definitely true ;-) Attached is an example. 

Basically, you write a music-function and inside that music function you 
simply copy the stripped-down contents (which is only one line, anyway!) of 
the set-octavation function, which is for some strange reason defined as a 
scheme function rather than a music function. What's the reason for this? 
AFAICS, that scheme function is not used inside any other code, so I see no 
reason why that shouldn't be a music function.

So the whole function boils down to:

ottava = #(define-music-function (parser location octave) (number?)
  (_i "set the octavation ")
  (make-ottava-set octave)
)

Unfortunately, this will still leave you French users the joy of twisting your 
fingers;-) I don't think there is any way to implement a function in scheme 
that uses \ottava 1 rather than \ottava #1. The only way I'm aware of is to 
implement that in the parser...

Cheers,
Reinhold



-- 
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Reinhold Kainhofer, Vienna University of Technology, Austria
email: address@hidden, http://reinhold.kainhofer.com/
 * Financial and Actuarial Mathematics, TU Wien, http://www.fam.tuwien.ac.at/
 * K Desktop Environment, http://www.kde.org, KOrganizer maintainer
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octavation.ly
Description: Text Data

octavation.pdf
Description: Adobe PDF document