Re: Issue 1846 in lilypond: Improves horizontal spacing of axis groups that SpanBar grobs traverse

[lilypond]

Updates:
        Labels: Patch-new

Comment #18 on issue 1846 by address@hidden: Improves horizontal spacing  
of axis groups that SpanBar grobs traverse
http://code.google.com/p/lilypond/issues/detail?id=1846

Fix for comment 17 at http://codereview.appspot.com/5528081

This sorting can be deleted because  the order in which contexts report  
their information to engravers is always top to bottom, so the sorting is  
unnecessary.  I put that code in there in case one day someone undoes this  
ordering.  However, as these programming erros show, it doesn't always work  
in the "Interpreting Music" phase, when grobs are not yet assured to have  
parents.

I think that if the top-to-bottom ordering of contexts is undone, it'll  
wreak havoc in many engravers, so this sorting of the vector is likely  
redundant and therefore unnecessary.