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From: Felipe Contreras <felipe.contreras@gmail.com>
To: Jacob Keller <jacob.e.keller@intel.com>,
	Felipe Contreras <felipe.contreras@gmail.com>,
	Erik Cervin Edin <erik@cervined.in>,
	Jeremy Morton <admin@game-point.net>
Cc: Chris Torek <chris.torek@gmail.com>, git@vger.kernel.org
Subject: Re: Proposal: tell git a file has been renamed
Date: Mon, 24 Apr 2023 14:00:31 -0600	[thread overview]
Message-ID: <6446dfdfdd6c_cd6129446@chronos.notmuch> (raw)
In-Reply-To: <26c4306d-f0f1-a2a6-55a5-6bb10c77cc0f@intel.com>

Jacob Keller wrote:
> On 4/24/2023 12:25 PM, Felipe Contreras wrote:
> > Erik Cervin Edin wrote:
> >> On Mon, Apr 24, 2023 at 1:17 PM Jeremy Morton <admin@game-point.net> wrote:
> >>>
> >>> There's no getting away from the fact that this adds a lot of (IMHO
> >>> unnecessary) work if you've already done a rename that git can't
> >>> detect and have both that and a bunch of other changes sitting in the
> >>> index.  What feels like it would be a natural resolution in these
> >>> cases, though, is a "no, this remove/add is actually a rename" command.
> >>
> >> It can definitely be both arduous and non-obvious how to deal with this.
> >>
> >> The problem is that such a command cannot exist atm. because renames
> >> don't exist, they are only interpreted. So the only way to achieve
> >> this is to revert enough of the contents staged to the index such that
> >> the rename is detected. The only way to do that in a foolproof manner
> >> is reverting all the staged changes except the path so that the moved
> >> file in the index is identical to the old file in HEAD.
> > 
> > I agree recording renames explicitely might be a good addition to git, but the
> > real question is how are they going to be stored in the object storage.
> > 
> > My guess is that it can be added in the commit object after "committer", just
> > add a "renames" field with all the renames, or one "rename" field per rename.
> > It would be backwards compatible because any field can be added this way.
> > 
> > How to generate these fields is a separate issue: first things first.
> 
> The other end of the solution space is to try to find ways to make the
> rename detection logic more accurate. We wouldn't need to store such a
> rename if the detection gave the correct answer in the first place.

We can make it more accurate, but it will never be 100%. Sometimes being
explicit is the only way.

Cheers.

-- 
Felipe Contreras

  reply	other threads:[~2023-04-24 20:00 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-22 18:01 Proposal: tell git a file has been renamed Jeremy Morton
2023-04-22 18:54 ` rsbecker
2023-04-22 19:44   ` Jeremy Morton
2023-04-22 19:47     ` rsbecker
2023-04-22 19:54       ` Jeremy Morton
2023-04-22 22:09         ` rsbecker
2023-04-23  9:38           ` Erik Cervin Edin
2023-04-23 21:01 ` Kristoffer Haugsbakk
2023-04-24  1:43 ` Chris Torek
2023-04-24 10:10   ` Jeremy Morton
2023-04-24 10:24     ` Chris Torek
2023-04-24 10:49     ` Erik Cervin Edin
2023-04-24 11:17       ` Jeremy Morton
2023-04-24 14:00         ` Erik Cervin Edin
2023-04-24 14:42           ` Jeremy Morton
2023-04-24 19:25           ` Felipe Contreras
2023-04-24 19:44             ` Jacob Keller
2023-04-24 20:00               ` Felipe Contreras [this message]
2023-04-26 19:08             ` Jacob Keller
2023-04-26 20:39               ` Junio C Hamano
2023-05-11 13:44                 ` Erik Cervin Edin
2023-04-24 18:26 ` Junio C Hamano
2023-04-24 19:41 ` Junio C Hamano
2023-04-24 20:05   ` Jeremy Morton

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