Re: Repeats and midi blocks

[Ian Hulin]

Hi Johan,

Johan Vromans wrote:
> Graham Percival <address@hidden> writes:
>
> > It depends on why you're listening to the piece.  I *do* want to
> > hear it clunking along, since I only ever listen to midi as a
> > quick "proofread" [...]
>
> Yes, though I'd say Ian has a point, too. I use the midi initially to
> 'proofread', but finally I generate the complete piece with repeats
> unfold. Should I make some corrections, I'd like to hear it without
> repeats, and so on.
>
> This snippet allows a command line option unfold-repeats to control
> this behaviour:
>
>   maybeUnfoldRepeats =
>   #(define-music-function (parser location music) (ly:music?)
>     (if (ly:get-option 'unfold-repeats)
>          #{ \unfoldRepeats $music #}
>          #{ $music #}))
>
>   \score {
>     \maybeUnfoldRepeats \allMusic
>     \midi { }
>   }
>
> Using "lilypond -d unfold-repeats ..." will now generate midi with
> unfolded repeats.
>
> Now, if we could only get rid of the warning "no such internal
> option: unfold-repeats"...
>
> -- Johan

Hmm... I may have a cunning plan.  Write some wrapper functions 
\setMidiRepeats to take a boolean flag and save this in an internal 
Scheme variable, say unfoldmidirepeats.  Your function then tests (if
Reinhold does this sort of thing in orchestrallily, so I should be able 
to steal from the best . . . )
This sort of thing,
\setMidiRepeats = #(define-music-function parser location 
unfoldmidirepeats music) (boolean? ly:music?)
if(unfoldmidirepeats)
 #{ \unfoldRepeats $music}
 #{ $music }
}
)
I'll probably need some extra Scheme functions to set the 
unfoldmidirepeats variable to initial values and a known state but 
you've given me something to work with.

Dankie en groetjes,

Ian