Issue 1550 in lilypond: Cannot place ossia staves with lyrics correctly

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Critical Regression

New issue 1550 by address@hidden: Cannot place ossia staves  
with lyrics correctly
http://code.google.com/p/lilypond/issues/detail?id=1550

In 2.12, the placement of ossia staves over the main stave, with lyrics  
under the ossia staff was simple and compliled with no errors.  In 2.13.52,  
it appears impossible to space the ossia staff away from the main staff  
above it, and attempts to do this using

        \override VerticalAxisGroup #'nonstaff-relatedstaff-spacing  
#'basic-distance = 30

have no effect. Using minimum-distance or padding instead of basic-distance  
pushes the ossia up away from the main staff, but it's then immediately  
below the main staff above, which is should be away from.  Spacing the main  
staves using

\paper {
  system-system-spacing #'basic-distance = #30
}

does leave room for the ossia, but spaces all the other music far too  
widely.

Finally, placing the lyrics under the ossia staff, which worked correctly  
in 2.12, now throws literally hundreds of error messages in 2.13.52,  
saying "warning: staff-affinities should only decrease".

Attachments:
        NewOssiaTest2.12.png  18.6 KB
        NewOssiaTest2.13.png  17.1 KB
        NewOssiaTest2.12.ly  875 bytes
        NewOssiaTest2.13.ly  967 bytes