Re: \stopStaff \startStaff bug

[Kieren MacMillan]

Hi Jean,

> Just take the example I gave earlier and remove the grace skips.
> 
> \version "2.24.0"
> <<
>   \new Staff { \grace { c'8 d'8 } c'1 }
>   \new Staff {
>     \once \override Staff.TimeSignature.color = "red"
>     \once \override NoteHead.color = "red"
>     c'1
>   }
> >>
> Do the overrides occur before the graces?

No: “obviously” (to me), all \once \override or \tweak commands are attached to 
the moment they occur in, not to some “liminal space” created by another 
context. This example doesn’t convince me: I can still easily find a single 
rule that covers this case [as I understand it] and the alternative [given 
clear documentation/instructions on how to apply the override before the grace 
music].

In my mind, grace time exists like the dialogue over a barline-with-fermata in 
a musical or opera: If you say that the downbeat of the next measure is spoken 
by Frank, that doesn’t retroactively change the dialogue over the barline to be 
spoken by Frank. (It's a twisted analogy, but it’s essentially what you’re 
suggesting.)

Cheers,
Kieren.