Comment #49 on issue 2527 by [email protected]: Finger-flag collision http://code.google.com/p/lilypond/issues/detail?id=2527
The most recent patchset makes NoteColumn cross-staff when it contains a cross-staff stem. Using this model, most (if not all) problems from the previous patch-sets are cleared up.
Sorry for the commented-out printf's - they'll disappear with the final push.
