Re: Regression: spacing single full-bar notes with ragged-right=##f

[Trevor Daniels]

Neil Puttock wrote Thursday, August 27, 2009 10:21 PM
>

> 2009/8/25 Trevor Daniels <address@hidden>:
> > I'd forgotten that news item, but the extra space seems to be
> > too large. I've checked the scores of three publishers and all
> > of them position a single note in a bar close to the left bar
> > line. One of the LilyPond examples I showed positioned the
> > note almost in the centre of the measure - surely that cannot
> > be correct.
>
> Hmm, with current git, the first 1/4 bar is even worse: the 
> crotchet
> is positioned in the last third of the bar's width; furthermore, 
> it's
> not possible to correct this by overriding 
> 'full-measure-extra-space
> unless you use negative values.

The default value for 'full-measure-spacing-width appears to
be just the default value for the distance property of a Spring
object, which is 1, so setting 'full-measure-extra-space to -1
effectively sets the space added to all but the first bar to 0.
This looks like it might be a solution to Werner's original
problem, and it also gives a means for reducing the extra
space when bars are seriously stretched.

I'll explore it a little more.

> > Furthermore, the positioning in the first measure of every line 
> > is
> > different to the rest of the measures on the line. The first bar 
> > is
> > correct, I believe, but surely the positioning should be 
> > consistent.
>
> Yes, I've noticed that before; I'm not sure whether that is by 
> design though.
>
> Looking in spacing-spanner.cc, it appears that the criterion for 
> the
> extra space is that the paper column to the left of the 
> SpacingSpanner
> has a break status of CENTER, which explains why the first bar in 
> each
> system doesn't get any extra space.

OK, thanks for the explanation.  There doesn't seem to be
anything we can do about this (other than changing the code).

Trevor