Re: Status on 1474

[Bernard Hurley]

On Wed, 2011-01-19 at 20:48 +0000, Keith OHara wrote:
> Carl Sorensen <c_sorensen <at> byu.edu> writes:
> 
> > So what is the current status on 1474?
> > 
> > I think that the latest proposal from Keith O'Hara was to revert ee0488.
> > 
> Issue 1474 looks like intentional behavior to me, and non-regressive to 
> Janek.   We'll see what Bernard says after he gives this a fresh look with a 
> clear mind.
> 
Yes, I think the current version is better than the old. It looks to me
that something like the new version is what was intended. (I say
something like because I don't want to argue about a pixel here or
there!). I ran lily 2.13.47 on a large score with a lot of passages like
the test passage and the results look good to me. 

However if we accept the new behaviour then that is a change and ought
to be documented somewhere.

/Bernard

> Reverting ee0488 (fixed 1120) looked fine at first, but with the example at 
> the 
> bottom, reverting ee0488 results in lyrics stretching the note spacing, the 
> essence of 1120.   
> 
> Lyrics 'padding needs to be greater than the sum of effective extra-spacing-
> heights of the LyricsText plus the relevant Notehead, or Stem, or etc.,  so 
> that the NoteColumns can slide ('tuck') over the Lyrics.
> 
> ee0488 made this happen by removing a default extra-spacing-height and giving 
> extra-spacing-height explicitly to the items who need it.  This had side-
> effects.  KeySignatures used extra-spacing-height (in a perverse way) to keep 
> multimeasure rests from colliding (1472).  Accidentals more often got space, 
> to 
> which I became accustomed (1474).
> 
> We can finish the job of re-distributing extra-spacing-height to complete 
> ee0488, or find a better solution for issue 1120 (maybe LyricText 
> extra-spacing 
> height '(+1 . -1) ? ).  
> 
> My current frustration with redistribution: anything that should slide over 
> Lyrics needs zero extra-height, but then those things tuck very closely with 
> each other.  
> 
> What I most want to determine is whether there is a wiser fix to issue 1120, 
> so 
> that spacing rules involving Lyrics do not compete with other spacing 
> desires. 
> I am still absorbing the depth of Neil's last comment on the issue
> <http://lists.gnu.org/archive/html/bug-lilypond/2011-01/msg00169.html>
> 
> ==
> \score { % essence of issue 1120
>   << \context Voice = "v" {
>     \stemDown g'~ g' g' 
>   }
>   \new Lyrics \lyricsto "v" { 
>     \lyricmode { Ammmmmm A }
>   } >>          
>   \layout { \context {
>     \Score
>       \override PaperColumn #'stencil = #ly:separation-item::print
>   }}} #(ly:set-option 'debug-skylines
> 
> 
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