Re: Something like $Id$, $Revision$ or $Date$?

From: Jakub Narebski <jnareb@gmail.com>
Date: Nov 10, 2008, 18:03 UTC
Message-ID: <200811101903.27685.jnareb@gmail.com>
In-Reply-To: <8763mvlbwb.fsf@erwin.mina86.com>

Dnia poniedziałek 10. listopada 2008 18:38, Michal Nazarewicz napisał:

Show 7 quoted lines

> Jakub Narebski <jnareb@gmail.com> writes:
> 
> > The reason why git doesn't support keywords like $Revision$ or $Date$
> > is performance: the $Revision$ and $Date$ are keywords related to
> > _commit_ data, not blob data. 
> 
> In my case identifying content not commit would be even better.

Well, in that case using `ident` attribute would be enough (but cryptic).

 # set `ident` attribute for all files
 $ echo '* ident' > .gitattributes

 # check that it is set for file 'foo'
 $ git check-attr ident -- foo
 foo: ident: set

 # edit file to contain '$Id$' keyword
 $ cat foo
 ...
 ... $Id$ ...
 ...

 # make a commit
 $ git commit -a

 # $Id$ keyword is replaced on checkout
 $ git add foo
 $ git checkout foo

 # and check that it got replaced
 $ cat foo
 ...
 ... $Id: 0ca1524d4460ba6bc91bf3adc9dab13212599243 $ ...
 ...

But you need git to make use of this SHA-1 _blob_ (contents) identifier

-- 
Jakub Narebski
Poland