[patch/RFA] rebase: Add -n option.

[Jason Tishler]

Corinna,

On Sun, May 06, 2012 at 12:02:51PM +0200, Corinna Vinschen wrote:
> Jason, ping?

Did we reach consensus on the approach to resolve the bug found by Achim
Gratz?

    http://cygwin.com/ml/cygwin/2012-05/msg00027.html

Are we going with the sed -r or escaping the question mark option?

Thanks,
Jason