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From: Elijah Newren <newren@gmail.com>
To: Eric Sunshine <sunshine@sunshineco.com>
Cc: Derrick Stolee via GitGitGadget <gitgitgadget@gmail.com>,
	Git Mailing List <git@vger.kernel.org>,
	Junio C Hamano <gitster@pobox.com>,
	Matheus Tavares Bernardino <matheus.bernardino@usp.br>,
	Derrick Stolee <stolee@gmail.com>,
	Derrick Stolee <derrickstolee@github.com>,
	Derrick Stolee <dstolee@microsoft.com>
Subject: Re: [PATCH 1/5] t1092: test merge conflicts outside cone
Date: Fri, 23 Jul 2021 10:47:02 -0700	[thread overview]
Message-ID: <CABPp-BEBD_4j+r2nVGrJgEPBYUPoUfZ839w_oZVnUSYofVDhLA@mail.gmail.com> (raw)
In-Reply-To: <CAPig+cQwxXGmN=exrr9YN174LXDuHU2yH847uOCzQQKsTEVWtg@mail.gmail.com>

On Fri, Jul 23, 2021 at 10:44 AM Eric Sunshine <sunshine@sunshineco.com> wrote:
>
> On Fri, Jul 23, 2021 at 1:34 PM Elijah Newren <newren@gmail.com> wrote:
> > On Wed, Jul 21, 2021 at 2:07 PM Derrick Stolee via GitGitGadget
> > <gitgitgadget@gmail.com> wrote:
> > > +               for side in left right
> > > +               do
> > > +                       git checkout -b merge-$side base &&
> > > +                       echo $side >>deep/deeper2/a &&
> > > +                       echo $side >>folder1/a &&
> > > +                       echo $side >>folder2/a &&
> > > +                       git add . &&
> > > +                       git commit -m "$side" || return 1
> >
> > Why is this "|| return 1" here?
> >
> > It looks like there are a number of other cases of this in the file
> > too, which I must have overlooked previously, because I don't
> > understand any of them.
>
> A shell for-loop won't automatically terminate just because some
> command in its body fails. Instead it will run to completion and
> return the status of the last command of the last iteration, which may
> not be the iteration which failed, thus a failure can be hidden.
> Therefore, we need to proactively stop the loop iteration _and_ ensure
> that the return status of the loop itself reflects the failure, which
> we do by `|| return 1`. (If this loop was inside a subshell, we'd use
> `|| exit 1` instead.)

Ah, thanks for the explanation.

  reply	other threads:[~2021-07-23 17:47 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-21 21:06 [PATCH 0/5] Sparse Index: Integrate with 'git add' Derrick Stolee via GitGitGadget
2021-07-21 21:06 ` [PATCH 1/5] t1092: test merge conflicts outside cone Derrick Stolee via GitGitGadget
2021-07-23 17:34   ` Elijah Newren
2021-07-23 17:44     ` Eric Sunshine
2021-07-23 17:47       ` Elijah Newren [this message]
2021-07-26 14:10     ` Derrick Stolee
2021-07-21 21:06 ` [PATCH 2/5] add: allow operating on a sparse-only index Derrick Stolee via GitGitGadget
2021-07-21 22:19   ` Junio C Hamano
2021-07-21 22:50     ` Derrick Stolee
2021-07-23 17:45   ` Elijah Newren
2021-07-26 13:11     ` Derrick Stolee
2021-07-26 13:33     ` Derrick Stolee
2021-07-21 21:06 ` [PATCH 3/5] pathspec: stop calling ensure_full_index Derrick Stolee via GitGitGadget
2021-07-23 18:17   ` Elijah Newren
2021-07-21 21:06 ` [PATCH 4/5] t1092: 'git add --refresh' difference with sparse-index Derrick Stolee via GitGitGadget
2021-07-21 21:06 ` [PATCH 5/5] add: ignore outside the sparse-checkout in refresh() Derrick Stolee via GitGitGadget
2021-07-23 19:46   ` Elijah Newren
2021-07-23 12:51 ` [PATCH 0/5] Sparse Index: Integrate with 'git add' Elijah Newren
2021-07-23 20:10   ` Elijah Newren
2021-07-26 15:18 ` [PATCH v2 " Derrick Stolee via GitGitGadget
2021-07-26 15:18   ` [PATCH v2 1/5] t1092: test merge conflicts outside cone Derrick Stolee via GitGitGadget
2021-07-26 15:18   ` [PATCH v2 2/5] add: allow operating on a sparse-only index Derrick Stolee via GitGitGadget
2021-07-26 15:18   ` [PATCH v2 3/5] pathspec: stop calling ensure_full_index Derrick Stolee via GitGitGadget
2021-07-26 15:18   ` [PATCH v2 4/5] add: ignore outside the sparse-checkout in refresh() Derrick Stolee via GitGitGadget
2021-07-26 15:18   ` [PATCH v2 5/5] add: remove ensure_full_index() with --renormalize Derrick Stolee via GitGitGadget
2021-07-28 23:13   ` [PATCH v2 0/5] Sparse Index: Integrate with 'git add' Elijah Newren
2021-07-29  2:03     ` Derrick Stolee
2021-07-29  2:57       ` Elijah Newren
2021-07-29 14:49         ` Derrick Stolee
2021-07-30 12:52           ` Elijah Newren
2021-07-29 14:52   ` [PATCH v3 " Derrick Stolee via GitGitGadget
2021-07-29 14:52     ` [PATCH v3 1/5] t1092: test merge conflicts outside cone Derrick Stolee via GitGitGadget
2021-07-29 14:52     ` [PATCH v3 2/5] add: allow operating on a sparse-only index Derrick Stolee via GitGitGadget
2021-07-29 14:52     ` [PATCH v3 3/5] pathspec: stop calling ensure_full_index Derrick Stolee via GitGitGadget
2021-07-29 14:52     ` [PATCH v3 4/5] add: ignore outside the sparse-checkout in refresh() Derrick Stolee via GitGitGadget
2021-07-29 14:52     ` [PATCH v3 5/5] add: remove ensure_full_index() with --renormalize Derrick Stolee via GitGitGadget
2021-07-29 14:58     ` [PATCH v3 0/5] Sparse Index: Integrate with 'git add' Elijah Newren
2021-07-29 23:00     ` Junio C Hamano

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