Re: how does uniform-stretching work?

[Juergen Reuter]

On Tue, 21 Feb 2006, Han-Wen Nienhuys wrote:

> ...
>
> there is only 1 SpacingSpanner in the entire score. You can only override it 
> at the start.

Just a half-baken, weired idea (and not at all thoroughly thought 
through):  Are there much more examples of properties that can be 
overridden only once at start?  For example, StaffSymbol #'line-count 
comes into my mind.  If yes, and if the syntax for 3.0 will change anyway 
heavily, you may want to model these properties as arguments that 
are passed to a context upon instantiation, maybe something like:

\new Staff = "chant" [StaffSymbol #'line-count = #4] { \myMusic }

If the user tries to modify line-count at any other place than at context 
instantiation, lily could emit an error, saying that this property may 
only be initialized once at context instantiation.

However, if there are only very few such properties, then it's probably 
not at all worth introducing a new syntactical construct.

Greetings,
Juergen