Graham Percival <gpermus <at> gmail.com> writes:
> I understand even less about the two-pass stuff.
:-)
I looked again yesterday, and either I didn't look very well last time or
someone has written something. I also looked a bit in the code, now that I knew
what to look for. I'm not sure it works the way I was expecting, though.
In the score I was preparing, two systems per page (on four pages) became one
per page (on eight pages) with two-pass vertical spacing. It looks like the
systems were stretched a bit too much.
I haven't reduced this to a minimal example yet; I'll try to do that and report
a bug. I did, however, find a workaround today:
- manually reduce system-stretch in the tweaks file for the systems on the first
page, and then:
- adjust the tweak by a factor, thus:
#(define tweakFactor 0.5)
spacingTweaks =
#(define-music-function (parser location parameters) (list?)
"Set the system stretch, by reading the 'system-stretch property of
the `parameters' assoc list."
#{
\overrideProperty #"Score.NonMusicalPaperColumn"
#'line-break-system-details
#$(list (cons 'alignment-extra-space
(* tweakFactor (cdr (assoc 'system-stretch parameters)))))
#})
It also looks like this could be used from lilypond-book. *clickety-click*
(That was the sound of me, testing.) And, lo and behold: This seems to work. I
now have a lilypond-book book with the same line breaks as the individual score.
So, that part works and I seem to have answered my own question. I'll try
boiling this down to a bug report and a bit of documentation, but probably not
this year...
Cheers,
--
Arvid
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