Comment #3 on issue 3119 by [email protected]: Repeat barlines and rests http://code.google.com/p/lilypond/issues/detail?id=3119
So I assume this is down to the improvements made to bar line handling and appreciate that. But why have the bar line types |: and :| disappeared - they still seem to make good alternatives to the new syntax, and actually look like the bar line that's produced?
