bug#17350: [PATCH] grep: speed up for a case to repeat failure in DFA after success in kwset

[Norihiro Tanaka]

Paul Eggert wrote:
> "Iff" means "if and only if"; see <http://en.wikipedia.org/wiki/Iff>.  I
> got the habit of trying to be logically-precise from RMS, who I guess
> got it back in the days when he was doing AI.

Wow, I understand it.

Thanks,
Norihiro