Re: git-bisect feature suggestion: "git-bisect diff"

From: Ingo Molnar <mingo@elte.hu>
Date: Dec 11, 2007, 09:24 UTC
Message-ID: <20071211092446.GA4703@elte.hu>
In-Reply-To: <200712080636.12982.chriscool@tuxfamily.org>

* Christian Couder <chriscool@tuxfamily.org> wrote:

> Tell us if you have other scripts or suggestions related to 
> git-bisect.

not strictly git-bisect related, but i've got the git-authors oneliner script below that i find very useful when figuring out whom to mail to related to a bug in any given kernel subsystem. For example when i see some USB problem i can do:

  git-authors v2.6.23.. drivers/usb/

which gives me the most active (and hence most relevant) developers in an area:

      9  Pete Zaitcev <zaitcev@redhat.com>
     10  Inaky Perez-Gonzalez <inaky@linux.intel.com>
     12  David Brownell <david-b@pacbell.net>
     12  Oliver Neukum <oliver@neukum.org>
     23  Alan Cox <alan@lxorguk.ukuu.org.uk>
     49  Alan Stern <stern@rowland.harvard.edu>

with an email to pick up. In terms of accuracy this beats the 
MAINTAINERS file most of the time. And even when MAINTAINERS is accurate 
- in this particular case there are 48 'USB' related entries in the 
MAINTAINERS file - totally hard to sort out for a newbie.

git-authors is also much easier and more natural to use - when i find problems it's usually related to a file, and i can run this:

$ git-authors v2.6.23.. kernel/pid.c
      1  Eric W. Biederman <ebiederm@xmission.com>
      1  Pavel Emelianov <xemul@openvz.org>
      1  Serge E. Hallyn <serue@us.ibm.com>
      3  Sukadev Bhattiprolu <sukadev@us.ibm.com>
     10  Pavel Emelyanov <xemul@openvz.org>

which works on a very finegrained level and gives a better "overview" than a pure git-log. Perhaps this could be a --authorstats option of git-log perhaps?

	Ingo

---------{ git-authors }---------> #!/bin/bash

git-log $@ | grep Author: | cut -d: -f2 | sort | uniq -c | sort -n