Re: [Lilypond-auto] Issue 3156 in lilypond: Patch: Prevents vertical axis groups with empty skylines

[lilypond]

Updates:
        Blockedon: lilypond:3160

Comment #5 on issue 3156 by address@hidden: Patch: Prevents vertical  
axis groups with empty skylines
http://code.google.com/p/lilypond/issues/detail?id=3156

This happens to hide the bug in issue 3160, so let's at least find out what  
went wrong there before doing this.

Somehow, this input was spaced properly in version 2.16,
whereas we know that lines with empty extents were not removed (i.e., no  
VerticalAxisGroup::suicide() ) because Trevor B's use of zero-extents was  
working then
<https://lists.gnu.org/archive/html/lilypond-devel/2013-02/msg00032.html>