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.
next prev parent 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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