Comment #5 on issue 2445 by [email protected]: Center a number above a measure
http://code.google.com/p/lilypond/issues/detail?id=2445
@David N: You could have a look at the Contributors' Guide (CG), specifically starting with section 2 in its entirety, then jumping to http://www.lilypond.org/doc/v2.15/Documentation/contributor/commits-and-patches. That said, the CG *is* under constant revision, so don't hesitate to question anything which seems odd or unreasonable. Basically, you want to install lily-git and get comfortable with git-cl. If you run into a snag, I'd be glad to try and help, and I'm sure a posting on devel- would be answered quickly, too.
