Re: [Lilypond-auto] Issue 2990 in lilypond: \RemoveEmptyStaves in StaffGroup context crashes

[lilypond]

Comment #11 on issue 2990 by address@hidden: \RemoveEmptyStaves in  
StaffGroup context crashes
http://code.google.com/p/lilypond/issues/detail?id=2990

Back in version 2.12, this was called \RemoveEmptyStaffContext and it could  
not be put in a \with block, but if we moved the /contents/ of its old  
definition,
  \new StaffGroup \with {
    \remove Axis_group_engraver
    \consists Hara_kiri_engraver
    \override VerticalAxisGroup #'remove-empty = ##t
  }  << { b1 \break b1 \break b1}
        { b1 \break b1 \break b1 }>>
then Lilypond version 2.12 does not crash.   Version 2.12 handles the  
example of comment 5 as well.  That means version 2.12 avoided whatever  
confusion versions 2.14 and later are having.

The construction above is not useful, though.  The items that  
removeEmptyStaves considers when deciding if the context is empty, are not  
seen at the StaffGroup level, so the construction above causes LilyPond  
ver2.12 to remove all the staves.