[PATCH] revset: document the choice made in _generatorset.__iter__

[Durham Goode]

On 9/17/14, 9:36 AM, Pierre-Yves David wrote:
> # HG changeset patch
> # User Pierre-Yves David <pierre-yves.david at fb.com>
> # Date 1410936161 25200
> #      Tue Sep 16 23:42:41 2014 -0700
> # Node ID e282c07bac1a5627920f53bd8b233a55ce42d05d
> # Parent  a476ee0b8e799c1b9b82ad2db350c90a31274879
> revset: document the choice made in _generatorset.__iter__
>
> The method code looks a bit ugly but have good reason to do so. We document them
> to prevent naive refactoring in the future.
>
Queued to clowncopter.