Re: bar numbers at beginning of bar - partial solution

[Paul Scott]

Kieren MacMillan wrote:
> Hi Paul,
>
> > > Thanks for answering, Mats.  With the following code the bar number
> > > displaces the notes in each bar to the right.  If I remove the two
> > > self-alignment-X overrides the bar number does not displace any music.
>
> \layout
> {
>     \context
>     {
>         \Score
>         \override BarNumber #'X-extent = #'(0 . 0)
>     }
> }

Hi Kieren,

I just searched through the docs and I don't find the meaning of 
X-extent.  What does it mean?  What does the above do?
> Now just solve the collision appropriately (with padding or whatever).

Why doesn't outside-staff-priority alone solve this?

Thanks,

Paul