Re: Issue 1613 in lilypond: Beamed stems too long when avoiding low note in other voice

[lilypond]

Comment #9 on issue 1613 by address@hidden: Beamed stems too long  
when avoiding low note in other voice
http://code.google.com/p/lilypond/issues/detail?id=1613

http://codereview.appspot.com/4426072/

This patch fits with option #2 as described above (build a list of  
intervals to describe where a beam may not go, then thread the beam between  
those intervals), and I believe it works.  The problem with making  
collision-voice-only the default is that it seems not to be that which a  
user would expect from automated engraving - I think that most people will  
want automatic collision avoidance (albeit non-buggy automatic avoidance,  
which I think the patch on issue 4426072 offers).