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From: Jeff King <peff@peff.net>
To: Junio C Hamano <gitster@pobox.com>
Cc: Jonathan Tan <jonathantanmy@google.com>, git@vger.kernel.org
Subject: Re: [PATCH v5 1/3] ls-refs: report unborn targets of symrefs
Date: Tue, 26 Jan 2021 18:20:34 -0500	[thread overview]
Message-ID: <YBCjwoc5LUrk3GBA@coredump.intra.peff.net> (raw)
In-Reply-To: <xmqq8s8f1iqe.fsf@gitster.c.googlers.com>

On Tue, Jan 26, 2021 at 01:38:49PM -0800, Junio C Hamano wrote:

> > @@ -103,14 +131,31 @@ int ls_refs(struct repository *r, struct strvec *keys,
> >  			data.symrefs = 1;
> >  		else if (skip_prefix(arg, "ref-prefix ", &out))
> >  			strvec_push(&data.prefixes, out);
> > +		else if (data.allow_unborn && !strcmp("unborn", arg))
> > +			data.unborn = 1;
> 
> I think the use of &&-cascade is iffy here.  Even when we are *not*
> accepting request for unborn, we should still parse it as such.
> This does not matter in today's code, but it is a basic courtesy for
> future developers who may add more "else if" after it.
> 
> IOW
> 
> 		else if (!strcmp("unborn", arg)) {
> 			if (!data.allow_unborn)
> 				; /* we are not accepting the request */
> 			else
> 				data.unborn = 1;
> 		}
> 
> I wrote the above in longhand only for documentation purposes; in
> practice, 
> 
> 		else if (!strcmp("unborn", arg))
>                 	data.unborn = data.allow_unborn;
> 
> may suffice.

Doing it that way is friendlier, but loosens enforcement of:

  Client will then send a space separated list of capabilities it wants
  to be in effect. The client MUST NOT ask for capabilities the server
  did not say it supports.

from Documentation/technical/protocol-capabilities.txt.

It does solve Jonathan's racy cluster-deploy problem, though. See the
discussion in the v4 thread (sorry, seems not to have hit the archive
yet, but hopefully this link will work soon):

  https://lore.kernel.org/git/YBCitNb75rpnuW2L@coredump.intra.peff.net/

-Peff

  parent reply	other threads:[~2021-01-27  4:20 UTC|newest]

Thread overview: 109+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-08  1:31 Cloning empty repository uses locally configured default branch name Jonathan Tan
2020-12-08  2:16 ` Junio C Hamano
2020-12-08  2:32   ` brian m. carlson
2020-12-08 18:55   ` Jonathan Tan
2020-12-08 21:00     ` Junio C Hamano
2020-12-08 15:58 ` Jeff King
2020-12-08 20:06   ` Jonathan Tan
2020-12-08 21:15     ` Jeff King
2020-12-11 21:05 ` [PATCH] clone: in protocol v2, use remote's default branch Jonathan Tan
2020-12-11 23:41   ` Junio C Hamano
2020-12-14 12:38   ` Ævar Arnfjörð Bjarmason
2020-12-14 15:51     ` Felipe Contreras
2020-12-14 16:30     ` Junio C Hamano
2020-12-15  1:41       ` Ævar Arnfjörð Bjarmason
2020-12-15  2:22         ` Junio C Hamano
2020-12-15  2:38         ` Jeff King
2020-12-15  2:55           ` Junio C Hamano
2020-12-15  4:36             ` Jeff King
2020-12-16  3:09               ` Junio C Hamano
2020-12-16 18:39                 ` Jeff King
2020-12-16 20:56                   ` Junio C Hamano
2020-12-18  6:19                     ` Jeff King
2020-12-15  3:22         ` Felipe Contreras
2020-12-14 19:25     ` Jonathan Tan
2020-12-14 19:42       ` Felipe Contreras
2020-12-15  1:27   ` Jeff King
2020-12-15 19:10     ` Jonathan Tan
2020-12-16  2:07   ` [PATCH v2 0/3] Cloning with remote unborn HEAD Jonathan Tan
2020-12-16  2:07     ` [PATCH v2 1/3] ls-refs: report unborn targets of symrefs Jonathan Tan
2020-12-16  6:16       ` Junio C Hamano
2020-12-16 23:49         ` Jonathan Tan
2020-12-16 18:23       ` Jeff King
2020-12-16 23:54         ` Jonathan Tan
2020-12-17  1:32           ` Junio C Hamano
2020-12-18  6:16             ` Jeff King
2020-12-16  2:07     ` [PATCH v2 2/3] connect, transport: add no-op arg for future patch Jonathan Tan
2020-12-16  6:20       ` Junio C Hamano
2020-12-16  2:07     ` [PATCH v2 3/3] clone: respect remote unborn HEAD Jonathan Tan
2020-12-21 22:30   ` [PATCH v3 0/3] Cloning with " Jonathan Tan
2020-12-21 22:30     ` [PATCH v3 1/3] ls-refs: report unborn targets of symrefs Jonathan Tan
2020-12-21 22:31     ` [PATCH v3 2/3] connect, transport: add no-op arg for future patch Jonathan Tan
2020-12-21 22:31     ` [PATCH v3 3/3] clone: respect remote unborn HEAD Jonathan Tan
2020-12-21 23:48     ` [PATCH v3 0/3] Cloning with " Junio C Hamano
2021-01-21 20:14     ` Jeff King
2020-12-22 21:54   ` [PATCH v4 " Jonathan Tan
2020-12-22 21:54     ` [PATCH v4 1/3] ls-refs: report unborn targets of symrefs Jonathan Tan
2021-01-21 20:48       ` Jeff King
2021-01-26 18:13         ` Jonathan Tan
2021-01-26 23:16           ` Jeff King
2020-12-22 21:54     ` [PATCH v4 2/3] connect, transport: add no-op arg for future patch Jonathan Tan
2021-01-21 20:55       ` Jeff King
2021-01-26 18:16         ` Jonathan Tan
2020-12-22 21:54     ` [PATCH v4 3/3] clone: respect remote unborn HEAD Jonathan Tan
2021-01-21 21:02       ` Jeff King
2021-01-26 18:22         ` Jonathan Tan
2021-01-26 23:04           ` Jeff King
2021-01-28  5:50             ` Junio C Hamano
2020-12-22 22:06     ` [PATCH v4 0/3] Cloning with " Junio C Hamano
2021-01-26 18:55 ` [PATCH v5 " Jonathan Tan
2021-01-26 18:55   ` [PATCH v5 1/3] ls-refs: report unborn targets of symrefs Jonathan Tan
2021-01-26 21:38     ` Junio C Hamano
2021-01-26 23:03       ` Junio C Hamano
2021-01-30  3:55         ` Jonathan Tan
2021-01-26 23:20       ` Jeff King [this message]
2021-01-26 23:38         ` Junio C Hamano
2021-01-29 20:23       ` Jonathan Tan
2021-01-29 22:04         ` Junio C Hamano
2021-02-02  2:20           ` Jonathan Tan
2021-02-02  5:00             ` Junio C Hamano
2021-01-27  1:28     ` Ævar Arnfjörð Bjarmason
2021-01-30  4:04       ` Jonathan Tan
2021-01-26 18:55   ` [PATCH v5 2/3] connect, transport: encapsulate arg in struct Jonathan Tan
2021-01-26 21:54     ` Junio C Hamano
2021-01-30  4:06       ` Jonathan Tan
2021-01-26 18:55   ` [PATCH v5 3/3] clone: respect remote unborn HEAD Jonathan Tan
2021-01-26 22:24     ` Junio C Hamano
2021-01-30  4:27       ` Jonathan Tan
2021-01-27  1:11   ` [PATCH v5 0/3] Cloning with " Junio C Hamano
2021-01-27  4:25     ` Jeff King
2021-01-27  6:14       ` Junio C Hamano
2021-01-27  1:41   ` Ævar Arnfjörð Bjarmason
2021-01-30  4:41     ` Jonathan Tan
2021-01-30 11:13       ` Ævar Arnfjörð Bjarmason
2021-02-02  2:22       ` Jonathan Tan
2021-02-03 14:23         ` Ævar Arnfjörð Bjarmason
2021-02-05 22:28     ` Junio C Hamano
2021-02-02  2:14 ` [PATCH v6 " Jonathan Tan
2021-02-02  2:14   ` [PATCH v6 1/3] ls-refs: report unborn targets of symrefs Jonathan Tan
2021-02-02 16:55     ` Junio C Hamano
2021-02-02 18:34       ` Jonathan Tan
2021-02-02 22:17         ` Junio C Hamano
2021-02-03  1:04           ` Jonathan Tan
2021-02-02  2:15   ` [PATCH v6 2/3] connect, transport: encapsulate arg in struct Jonathan Tan
2021-02-02  2:15   ` [PATCH v6 3/3] clone: respect remote unborn HEAD Jonathan Tan
2021-02-05  4:58 ` [PATCH v7 0/3] Cloning with " Jonathan Tan
2021-02-05  4:58   ` [PATCH v7 1/3] ls-refs: report unborn targets of symrefs Jonathan Tan
2021-02-05 16:10     ` Jeff King
2021-02-05  4:58   ` [PATCH v7 2/3] connect, transport: encapsulate arg in struct Jonathan Tan
2021-02-05  4:58   ` [PATCH v7 3/3] clone: respect remote unborn HEAD Jonathan Tan
2021-02-05  5:25   ` [PATCH v7 0/3] Cloning with " Junio C Hamano
2021-02-05 16:15     ` Jeff King
2021-02-05 21:15     ` Ævar Arnfjörð Bjarmason
2021-02-05 23:07       ` Junio C Hamano
2021-02-05 20:48 ` [PATCH v8 " Jonathan Tan
2021-02-05 20:48   ` [PATCH v8 1/3] ls-refs: report unborn targets of symrefs Jonathan Tan
2021-02-05 20:48   ` [PATCH v8 2/3] connect, transport: encapsulate arg in struct Jonathan Tan
2021-02-05 20:48   ` [PATCH v8 3/3] clone: respect remote unborn HEAD Jonathan Tan
2021-02-06 18:51   ` [PATCH v8 0/3] Cloning with " Junio C Hamano
2021-02-08 22:28     ` Junio C Hamano

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