[Lilypond-auto] Issue 2612 in lilypond: Patch: Issues warning for negative-spanning line spanner.

[lilypond]

Status: New
Owner: ----
Labels: Type-Enhancement Patch-new
New issue 2612 by mts...@gmail.com: Patch: Issues warning for  
negative-spanning line spanner.
http://code.google.com/p/lilypond/issues/detail?id=2612

Issues warning for negative-spanning line spanner.

http://codereview.appspot.com/6302097