From: Jeff King <peff@peff.net>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: Stefan Monnier <monnier@iro.umontreal.ca>, git@vger.kernel.org
Subject: Re: Can't diff against the 00000000 revision
Date: Tue, 12 Jan 2016 13:21:16 -0500 [thread overview]
Message-ID: <20160112182115.GB9244@sigill.intra.peff.net> (raw)
In-Reply-To: <87io2yekhp.fsf@igel.home>
On Tue, Jan 12, 2016 at 07:11:14PM +0100, Andreas Schwab wrote:
> Jeff King <peff@peff.net> writes:
>
> > And hopefully that explains why "000000" does not necessarily make a
> > good placeholder for "the empty thing". There are multiple empty things,
> > and it is not clear what:
> >
> > git diff 0000000 1234abcd
> >
> > means. Is 0000000 a tree? A blob?
>
> Perhaps there should be an easy syntax for an empty thing, something
> like 0^{tree} and 0^{blob}. Not sure whether it is worth the effort,
> though.
I think I proposed a magic EMPTY_TREE token or something like that at
one point. It is slightly more convenient than trying to remember the
exact tree sha1, but I think in practice it doesn't save much effort
(outside of scripts, you can often use "--root" to accomplish the same
thing, depending on the command being run).
-Peff
prev parent reply other threads:[~2016-01-12 18:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-12 15:17 Can't diff against the 00000000 revision Stefan Monnier
2016-01-12 15:32 ` Jeff King
2016-01-12 15:37 ` Jeff King
2016-01-12 16:26 ` Stefan Monnier
2016-01-12 18:20 ` Jeff King
2016-01-12 18:52 ` Junio C Hamano
2016-01-12 18:11 ` Andreas Schwab
2016-01-12 18:21 ` Jeff King [this message]
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