Re: [Lilypond-auto] Issue 3631 in lilypond: 2.17 does a worse job with vertical spacing and/or the page layout than 2.16

[lilypond]

Comment #16 on issue 3631 by address@hidden: 2.17 does a worse job  
with vertical spacing and/or the page layout than 2.16
http://code.google.com/p/lilypond/issues/detail?id=3631

By turning off the pure approximation, it will have an estimated Y-offset  
of 0, which would cause more compression than 2.17.14 but is not  
necessarily a good idea for scores that need to reserve this space.  For  
example...

\new Voice \repeat unfold 50
{
\override Score.BarNumber #'self-alignment-X = #LEFT
\override Score.BarNumber #'stencil =
#(lambda (grob)
  (grob-interpret-markup grob (markup #:abs-fontsize 60 "1" )))
\override Score.BarNumber #'Y-offset =  
#ly:side-position-interface::y-aligned-side
c''1 \break
}

whereas...

\new Voice \repeat unfold 50
{
\override Score.BarNumber #'self-alignment-X = #LEFT
\override Score.BarNumber #'stencil =
#(lambda (grob)
  (grob-interpret-markup grob (markup #:abs-fontsize 60 "1" )))
c''1 \break
}

is fine.  It is an improvement on 2.14, which gives too much space.

I'm pretty sure, however, that bar numbers are the culprit, as it is  
certain that turning off the pure estimation gives a more compressed  
result.  But I think the solution is to give a better pure estimation  
rather than turning it off.


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