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

[lilypond]

Comment #7 on issue 2990 by address@hidden: \RemoveEmptyStaves in StaffGroup  
context crashes
http://code.google.com/p/lilypond/issues/detail?id=2990

So the right post-problem check would be not adding any VerticalAxisGroup  
to a VerticalAxisGroup.  A more timely check would have the  
Axis_group_engraver barf when it wants to create a VerticalAxisGroup and  
there is already one visible in its context(?).