Re: „Anonymous” properties, deafening engravers and font features

[Lukas-Fabian Moser]

Hi Valentin,
> For example we might have Staves that should behave differently if certain
> other Staves are present. E.g. if we have some splitted staves and we want to
> have voices behave differently depending on whether they are in a separate
> staff or in the common staff. So for this it would be nice if we could simply
> save information in the Staff context that tells us things like how many
> different Parts we currently have in the Staff, for example.
>
> For example we could handle properties that begin with „custom” as custom
> properties, so we could say \override Staff.custom-my-property = something.

Can't we already do this within the details property of grobs? So not 
for a whole context (as in your Staff example), but you can already do

\override Staff.StaffSymbol.details.my-property = "I am too hard to play"

or in very much any other grob.

Lukas