From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeff King <peff@peff.net>
Subject: Re: Insertions/Deletions summary for a contributor
Date: Thu, 29 Oct 2009 12:01:57 -0400
Message-ID: <20091029160156.GA7622@sigill.intra.peff.net>
References: <a362e8010910282344vad53b7ck1b7ae04ff3c499ed@mail.gmail.com>
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Cc: git@vger.kernel.org
To: Laszlo Papp <djszapi@archlinux.us>
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On Thu, Oct 29, 2009 at 07:44:40AM +0100, Laszlo Papp wrote:

> It would be nice to see summary for a contributor in insertions/deletions
> lines, changed files regard, in the life of the whole project.
> 
> So the output would be the summary of the following output lines:
> git log --author="Laszlo Papp" --pretty=tformat: --numstat
> 
> Can I deal with it, does it make sense, what do you think about it ?

Try piping the output of the command above through:

  perl -ane '
        $add{$F[2]} += $F[0];
        $del{$F[2]} += $F[1];
        END { print "$add{$_} $del{$_} $_\n" foreach sort keys(%add) }
  '

but keep in mind that such a summary is not necessarily a useful value.
Modified lines are represented as deletion and add, and you may simply
be deleting and adding the same lines over and over again. :)

A more interesting summary is to "git blame" files and count
contributor lines. This shows content by that contributor which has
survived to the current tree.

-Peff