Comment #12 on issue 2820 by [email protected]: Tab staff repeat sign http://code.google.com/p/lilypond/issues/detail?id=2820
Come to think of it, special-casing two-line staffs will likely not make much sense as long as we don't know a single application for that (1 line is for rhythmic staffs, 4 for plainchant, but I can't think of use for anything in between, at least not with _narrow_ stafflines). Maybe one should test the narrow-even-line-count cases with four lines instead, perhaps even using a VaticanaStaff or so: it will be much more relevant if those change.
