identifying blobs (was Re: Memory overrun in http-push.c)

From: Junio C Hamano <junkio@cox.net>
Date: Mar 2, 2007, 22:52 UTC
Message-ID: <7vr6s7dzrh.fsf@assigned-by-dhcp.cox.net>
In-Reply-To: <Pine.LNX.4.63.0703021617040.22628@wbgn013.biozentrum.uni-wuerzburg.de>

Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:

Show 7 quoted lines

> On Fri, 2 Mar 2007, Jakub Narebski wrote:
>
>> Second, there were some work on git mailing list to create git command 
>> which given a blob (or sha1 of a blob object) would list all commits (in 
>> date order) which have this exact version of a file (of a blob).
>
> It was shot down, and rightly so.

I think this "rightly" needs a clarification (otherwise Jakub wouldn't have said the above).

It wasn't that identifying the commit that contained the version of the file was not needed. It is just there already is a way to do so, and "to create git command" turns out to be unnecessary. Something like:

	$ hash=`git hash-object --stdin <$file_in_question`
	$ git log -z --raw -r --abbrev=40 |
          grep -z '^:[0-7][0-7]* [0-7][0-7]* [0-9a-f][0-9a-f]* '"$hash"'