Re: 2.13.40 regtests

[Keith E OHara]

On Sun, 28 Nov 2010 21:10:03 -0800, Graham Percival wrote:

> les-nerides: this is definitely an improvement.  I'm surprised to
> see that the old version involved a collision between fingering
> and a slur in different staves, though!  (end of bar 2)
> Could somebody look into whether this is a known bug, and report
> it if it isn't?

*Red* is the new version 2.13.40, so we see the opposite of improvement, but it 
is all known issue.

The slurs in the upper system, and the fingering in the upper system that 
avoids those slurs, are considered cross-staff objects for which Lilypond does 
no collision avoidance.  This is noted in comments in the code and is logged in 
issues such as 36, 439, 721, and 1043.

The fact that the 5-4-1 fingering stack gets so close the the pedal indication 
looks like the first reported sighting of issue 1290 in real music.

(The fix to 1385 explains the difference shown by Phil's image : the old spacing code 
thought it needed to let the low a,, clear the "m.g." because the old code was 
ignorant of the first-line indent.  This fix also explains the difference seen in 
utf-8.ly.)

Version 2.12.3 gives similar output, just one staff-space more separation due 
to its 2-space default padding where 2.13 has 1-space.


> page-breaking-min-systems-per-page2 and -page-count-3: I see music
> going off the end of the page.  Are these known issues?

Both these over-fillings of the page are forced by options under user control.  
Lilypond gives overflow warnings.  So, it seems these are not issues at all.
--
Keith