Re: [Lilypond-auto] Issue 2460 in lilypond: StaffGroup barlines should be whited-out to allow better Lyrics and Dynamics placement

[lilypond]

Comment #4 on issue 2460 by address@hidden: StaffGroup barlines  
should be whited-out to allow better Lyrics and Dynamics placement
http://code.google.com/p/lilypond/issues/detail?id=2460

I generally agree that vocal scores shouldn't have barlines across the  
whole StaffGroup.  However, i see two possible cases when they might be  
acceptable:
- when someone wants to reproduce an old score which uses this
- in full score for conductor: barlines spanning whole ChoirStaff can  
improve the visual separation of the group from other groups.  This would  
be especially helpful in a multi-chorus score: imagine a piece for 2 SATB  
choirs and 6 soloists in two gropus (and no instruments).  Without  
staffGroup barlines it would be hard to distinguish the vocal groups from  
themselves.