Re: Edition Engraver and staff changes

[Urs Liska]

Hello Auke


Am 14.08.2018 um 21:51 schrieb Partitura Organum:
> Hello all,
>
> In organ music it is quite common that one of the hands plays a part 
> that is either to high or to low for the  'common' clefs, but that can 
> be perfectly rendered with the alto clef. Not many organists are still 
> able to read the alto clef, so I usually make to versions, one with 
> the alto clef, and one with the part distributed over two staves (see 
> images for an example).
>
> ...
>
> Since the notes do not change, only the way they are rendered, I 
> thought it would be a good use case for the edition engraver. Problem 
> however is that the Edition Engraver references contexts and I cannot 
> tell one context to become another. The command 'change Staff' cannot 
> be used with the Edition Engraver. Below is my (not so minimal) 
> not-working example. Is there a way to tell the Edition Engraver that 
> a part should switch Staff? Or is the Edition Engraver not suitable 
> for my use case (which means that I should continue to do it manually)?

I have not tested your example but believe you that it isn't working.
I don't have insight in this kind of inner workings of the 
edition-engraver, but I hope it should be possible to make that work 
(which wouldn't be an input syntax thing but a task for the 
edition-engraver to explicitly support).

I suggest you either wait for Jan-Peter to give his opinion on this or 
just go forward and add this as a feature request on 
https://github.com/openlilylib/edition-engraver/issues.

Best
Urs