Re: \stopStaff \startStaff bug

[David Kastrup]

Jean Abou Samra <jean@abou-samra.fr> writes:

> Le 07/01/2023 à 17:58, David Kastrup a écrit :
>>> In that case, the NoteHead one has no effect, because \once applies to
>>> the next time step only, and the next time step is for a grace note
>>> another voice.
>> The recovery action of \once should likely occur after the next _local_
>> timestep.
>
> OK, that is an interesting idea, although I would personally find ...
>
>
>> With that interpretation, \once \override Staff.NoteHead.color would
>> color _all_ grace notes.
>
>
> ... this somewhat confusing.
>
>
>
>> An alternative would be to try to involve
>> \context ... constructs in the grace fixup decisions, in which case
>> NoteHead.color and Staff.NoteHead.color would lead to different timings
>> of the result.
>
>
>
> That would presumably lead to
>
> {
>   \once \override NoteHead.color = ...
>   \once \override Staff.NoteHead.color = ...
>   ...
> }
>
> getting the events reordered so that the Staff.NoteHead override
> starts before graces and the NoteHead one starts after, which I
> would definitely find surprising.
>
>
> Either way, stuff like
>
>
> \version "2.24.0"
>
> articulations = {
>   <>\< \after 8 \! s4
> }
>
> \new Voice <<
>   { \grace b8 c'8 d'8 }
>   \articulations
>>>
>
>
> would have its output changed in a way that I would consider
> unwanted.

Well, this was sort of saying that there may be no silver bullet, but we
may have to pick between chrome and aluminum ones.

Sometimes there is a solution that blends better into human expectations
than strict logic.

-- 
David Kastrup