From: Jeff King <peff@peff.net>
To: Junio C Hamano <gitster@pobox.com>
Cc: "Jonathan Nieder" <jrnieder@gmail.com>,
"Jonathan Tan" <jonathantanmy@google.com>,
git@vger.kernel.org, "Elijah Newren" <newren@gmail.com>,
"Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>,
"Andrii Dehtiarov" <adehtiarov@google.com>
Subject: Re: [PATCH 3/3] gc: do not return error for prior errors in daemonized mode
Date: Wed, 18 Jul 2018 13:22:25 -0400 [thread overview]
Message-ID: <20180718172225.GA2677@sigill.intra.peff.net> (raw)
In-Reply-To: <xmqqk1psldkx.fsf@gitster-ct.c.googlers.com>
On Wed, Jul 18, 2018 at 09:21:18AM -0700, Junio C Hamano wrote:
> > I still think that "repo" should probably stop respecting the exit code.
> > But that's no excuse for Git not to have a sensible exit code in the
> > first place.
>
> I am not yet convinced that this last step to exit with 0 is a good
> change, even though I can understand that it would be more
> convenient, as there currently is no easy way for the calling script
> to tell two error cases apart.
>
> I think the "sensible exit code" you mention would be something like
> "1 for hard error, 2 for 'I am punting as I see there were previous
> errors---you may want to examine your repository'".
>
> If we did that from day one and documented that behaviour, nobody
> would have complained, but adopting that suddenly is of course a
> breaking change.
>
> Perhaps we should exit with 2 (not 0) in that "previous error" case
> by default, and then have a configuration knob to turn that 2 into 0
> for those who cannot easily modify the calling script? That way, we
> by default will *not* break those who have been paying attention to
> zero-ness of the exit status, we allow those who want to treat this
> "prior error" case as if there were no error with just a knob, and
> then those who are willing to update their script can tell two cases
> by the exit status and act differently.
I think we have been exiting non-zero with "previous errors" for some
time with the daemonizing code. It was just spelled "-1" instead of "2".
So just jumping right there does not mean any regression from the
current state, I don't think (but it also does not fix existing scripts
like "repo" that check the code).
I agree the config you suggest would give people the tools to make that
case work. But it somehow rubs me the wrong way. Can you imagine the
perspective of a user who is told "oh, your script breaks? Just try
setting this option to ignore error codes in this one particular
situation". It feels like a weird hack, because it is.
It's also still inconsistent in the daemonize case. The run that yields
the error won't return a non-zero exit. But the next run will exit with
"2".
-Peff
next prev parent reply other threads:[~2018-07-18 17:22 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-16 17:27 [PATCH] gc: do not warn about too many loose objects Jonathan Tan
2018-07-16 17:51 ` Jeff King
2018-07-16 18:22 ` Jonathan Nieder
2018-07-16 18:52 ` Jeff King
2018-07-16 19:09 ` Jonathan Nieder
2018-07-16 19:41 ` Jeff King
2018-07-16 19:54 ` Jonathan Nieder
2018-07-16 20:29 ` Jeff King
2018-07-16 20:37 ` Jonathan Nieder
2018-07-16 21:09 ` Jeff King
2018-07-16 21:40 ` Jonathan Nieder
2018-07-16 21:45 ` Jeff King
2018-07-16 22:03 ` Jonathan Nieder
2018-07-16 22:43 ` Jeff King
2018-07-16 22:56 ` Jonathan Nieder
2018-07-16 23:26 ` Jeff King
2018-07-17 1:53 ` Jonathan Nieder
2018-07-17 8:59 ` Ævar Arnfjörð Bjarmason
2018-07-17 14:03 ` Jonathan Nieder
2018-07-17 15:24 ` Ævar Arnfjörð Bjarmason
2018-07-17 20:27 ` Jeff King
2018-07-18 13:11 ` Ævar Arnfjörð Bjarmason
2018-07-18 17:29 ` Jeff King
2018-07-17 15:59 ` Duy Nguyen
2018-07-17 18:09 ` Junio C Hamano
2018-07-16 19:15 ` Elijah Newren
2018-07-16 19:19 ` Jonathan Nieder
2018-07-16 20:21 ` Elijah Newren
2018-07-16 20:35 ` Jeff King
2018-07-16 20:56 ` Jonathan Nieder
2018-07-16 21:12 ` Jeff King
2018-07-16 19:52 ` Jeff King
2018-07-16 20:16 ` Elijah Newren
2018-07-16 20:38 ` Jeff King
2018-07-16 21:09 ` Elijah Newren
2018-07-16 21:21 ` Jeff King
2018-07-16 22:07 ` Elijah Newren
2018-07-16 22:55 ` Jeff King
2018-07-16 23:06 ` Elijah Newren
2018-07-16 21:31 ` Jonathan Nieder
2018-07-17 6:51 ` [PATCH v2 0/3] gc --auto: do not return error for prior errors in daemonized mode Jonathan Nieder
2018-07-17 6:53 ` [PATCH 1/3] gc: improve handling of errors reading gc.log Jonathan Nieder
2018-07-17 18:19 ` Junio C Hamano
2018-07-17 19:58 ` Jeff King
2018-07-17 6:54 ` [PATCH 2/3] gc: exit with status 128 on failure Jonathan Nieder
2018-07-17 18:22 ` Junio C Hamano
2018-07-17 19:59 ` Jeff King
2018-09-17 18:33 ` Jeff King
2018-09-17 18:40 ` Jonathan Nieder
2018-09-18 17:30 ` Jeff King
2018-07-17 6:57 ` [PATCH 3/3] gc: do not return error for prior errors in daemonized mode Jonathan Nieder
2018-07-17 20:13 ` Jeff King
2018-07-18 16:21 ` Junio C Hamano
2018-07-18 17:22 ` Jeff King [this message]
2018-07-18 18:19 ` Junio C Hamano
2018-07-18 19:06 ` Jeff King
2018-07-18 19:55 ` Junio C Hamano
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