Re: Issue 1967 in lilypond: Concurrent slurs that start and end at the same moment should not produce a warning

[lilypond]

Comment #15 on issue 1967 by address@hidden: Concurrent slurs that start and  
end at the same moment should not produce a warning
http://code.google.com/p/lilypond/issues/detail?id=1967

I am not sure how your simplified example should be typeset.  Is there a  
situation where it should result in a double slur?  If there is, should the  
part combiner aim for events corresponding to a double, or to a single slur?

I think we had a separate report where people complained about identical  
markups not being folded when part combining.  Should the part combiner  
fold here?  Should the normal parallel music fold?

So I really am unsure whether adjusting the circumstances around the  
warning will be all that should be done, even though it should be all for  
removing the "Regression" part of this report.