Re: Did VerticalAxisGroup default-staff-staff-spacing stop respecting padding in 2.17.10?

[Keith OHara]

On Thu, 07 Feb 2013 20:56:06 -0800, Trevor Bača <address@hidden> wrote:

> On Thu, Feb 7, 2013 at 2:02 PM, Keith OHara <address@hidden> wrote:
>
> > Trevor Bača <trevorbaca <at> gmail.com> writes:
> >
> > > Did VerticalAxisGroup's default-staff-staff-spacing property stop
> > > respecting the 'padding' attribute between 2.17.9 and 2.17.10?
> > >
> > > I ask because I use a custom time signature context in my scores.
> >
> > No, padding still works.  The latest LilyPond misunderstood what you
> > want with the zero-dimension TimeSignature.

> Good point. I set zero-extent time signatures so that the notes in the
> score will be positioned exactly where they are supposed to begin when
> proportional notation is turned on. (You can see this in the small PNGs
> sent along with the original post.) With nonzero-extent time signatures we
> wind up with notes being pushed slightly to the right of where they should
> begin in order to accommodate the X-extent of time signatures that come
> between notes.

> Other than that there's no particular allure to the zero-extent time
> signatures: they're just the mechanism I was best able to use to achieve
> the precision of horizontal layout. Quite happy to solve the problem a
> different way if some newer mechanism is recommended.

Probably you should adjust your solution, because Mike's next patch completely 
removes lines of music that have only zero-size extents.

If I comment out the following four overrides, the output looks correct to me.

% \override TimeSignature #'X-extent = #'(0 . 0)
% \override TimeSignature #'Y-extent = #'(0 . 0)
% \override TimeSignature #'self-alignment-X = #center
% \override VerticalAxisGroup #'staff-staff-spacing =
%     #'((basic-distance . 8) (minimum-distance . 8) (padding . 6) 
(stretchability . 0))

Notice that basic-distance, etc., take hyphens where you had underscores (and 
there are no error messages for typos when setting these low-level options).

If it is important for the bar line to be close to the following note, maybe 
something like
   \override TimeSignature #'X-extent = #'(0 . 0.1)