Re: [Question] How to increment the current bar number

[Malte Meyn]

Am 02.09.18 um 20:52 schrieb David Kastrup:
> > You have to get the Score context somehow. This can be done by using
> > \applyContext. I don’t know what context the procedure then is called
> > with (maybe the current Bottom?)
>
> The current "whatever".  Since you already had R1*3 descend to Bottom,
> that would be Bottom.
>
> But you can certainly write
>
> \context Score \applyContext ...
>
> or similar (possibly Timing instead of Score in polyrhythmic stuff).

Oh, that’s how it’s done … I always wondered what context \applyContext 
applies to; I don’t really know better now (therefore, \applyContext 
always has been sort of magic in my eyes) but at least I learned how to 
control that.

Neither 
http://lilypond.org/doc/v2.19/Documentation/extending/context-evaluation 
nor 
http://lilypond.org/doc/v2.19/Documentation/notation/available-music-functions 
takes that “magic” away; is there any documentation that explains what 
is going on here?