Re: [PATCH 1/7] grep: move thread initialization a little lower

> Originally, we set up the threads for grep before parsing
> the non-option arguments. In 53b8d931b (grep: disable
> threading in non-worktree case, 2011-12-12), the thread code
> got bumped lower in the function because it now needed to
> know whether we got any revision arguments.
> 
> That put a big block of code in between the parsing of revs
> and the parsing of pathspecs, both of which share some loop
> variables. That makes it harder to read the code than the
> original, where the shared loops were right next to each
> other.
> 
> Let's bump the thread initialization until after all of the
> parsing is done.
> 
> Signed-off-by: Jeff King <peff@peff.net>
> ---
> I double-checked to make sure no other code was relying on
> the thread setup having happened. I think we could actually
> bump it quite a bit lower (to right before we actually start
> grepping), but I doubt it matters much in practice.