[PATCH 1 of 3 V2] ancestor: a new algorithm for ancestors of a set of revs not in another set that is faster when the sets are close

[Siddharth Agarwal]

On 11/22/2012 07:56 AM, Greg Ward wrote:
> To my surprise, http://mercurial.selenic.com/wiki/ContributingChanges
> says nothing about how long the first line of a commit message should
> be. But I'm pretty sure 80 chars is the absolute maximum beyond which
> thou shalt not go, and 75 chars is much better.
>
> How about:
>
>    ancestor: add faster algorithm for computing difference of ancestor sets
>
> Then immediately qualify in the next paragraph that it's geared
> towards the "sets are close" case that is common in rebase.

Thanks; I did mean to shorten it before sending but somehow forgot.