Re: ragged-last-bottom only affects last score in book

[Graham Percival]

Nicolas Sceaux wrote:
> Paul Scott <address@hidden> writes:
>
> > Nicolas Sceaux wrote:
> > > Graham Percival <address@hidden> writes:
> > >   
> > > > Could ragged-last-bottom be changed to affect all scores in a book?
> > > > Currently it only applies to the last one.  (even better: could this
> > > > be alterable in separate scores?)
> > > >     
> Still, it does not make sense to say that ragged-last-bottom should
> apply to the last page of a score, for this page could also be the first
> page on another score. What you and Graham seem to be requesting is a
> way to split a book into several sections, with a page break between
> sections, and the last page of a section with ragged-last-bottom.

Ok... if introducing sections is the easiest way to solve this.

The only place in the source code that ragged-last-bottom appears is in 
scm/layout-page-layout.scm

...
     (this-page (make-page
           page-alist
           'paper-book paper-book
           'is-last last?
           'page-number this-page-num))

     (ragged-all? (eq? #t (ly:output-def-lookup paper 'ragged-bottom)))
     (ragged-last? (eq? #t (ly:output-def-lookup paper 
'ragged-last-bottom)))
     (ragged? (or ragged-all?
      (and ragged-last?
           last?)))
           (height (page-printable-height this-page))
     (vertical-spacing (space-systems height current-lines ragged?))
...

I guess this problem boils down to
        'is-last last?
returning the final page of the book (as a boolean), rather than the 
final page of the current score.


Hmm, that still wouldn't let me alter the vertical spacing for the last 
page of different scores.  I guess we'd need to make ragged-last-bottom 
a layout variable for that... maybe "book sections" is a better way to 
go after all.

Cheers,
- Graham