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From: ZheNing Hu <adlternative@gmail.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: "Phillip Wood" <phillip.wood123@gmail.com>,
	"ZheNing Hu via GitGitGadget" <gitgitgadget@gmail.com>,
	"Git List" <git@vger.kernel.org>,
	"Christian Couder" <christian.couder@gmail.com>,
	"Hariom Verma" <hariom18599@gmail.com>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Han-Wen Nienhuys" <hanwen@google.com>,
	"Ramkumar Ramachandra" <artagnon@gmail.com>,
	"Felipe Contreras" <felipe.contreras@gmail.com>
Subject: Re: [PATCH v3] [GSOC] cherry-pick: use better advice message
Date: Sat, 14 Aug 2021 10:07:40 +0800	[thread overview]
Message-ID: <CAOLTT8Qrz_t60i6U0YvrgXKGkqVEx13ts5T1J1qKht3iMzC2bg@mail.gmail.com> (raw)
In-Reply-To: <xmqqzgtlumob.fsf@gitster.g>

Junio C Hamano <gitster@pobox.com> 于2021年8月14日周六 上午4:14写道:
>
> Phillip Wood <phillip.wood123@gmail.com> writes:
>
> >> +++ b/t/t3507-cherry-pick-conflict.sh
> >> @@ -53,9 +53,12 @@ test_expect_success 'advice from failed cherry-pick' "
> >>      picked=\$(git rev-parse --short picked) &&
> >>      cat <<-EOF >expected &&
> >
> > If you quote the here doc end marker then there is no substitution in
> > the here doc so writing
> >
> >       cat <<-\EOF >expected &&
> >
> >>      error: could not apply \$picked... picked
> >> -    hint: after resolving the conflicts, mark the corrected paths
> >> -    hint: with 'git add <paths>' or 'git rm <paths>'
> >> -    hint: and commit the result with 'git commit'
> >> +    hint: Resolve all conflicts manually, mark them as resolved with
> >> +    hint: \"git add/rm <conflicted_files>\", then run
> >
> > means you can replace \" with " here
>
> Hmph, actually the double-quote that opens the body of
> test_expect_success should be stared at with a very cautious eyes,
> as they often do not mean what the author of the patch thought they
> do.  I can see that it already fooled your eyes into thinking that
> there is no substitution, but $picked needs to be substituted into
> its value.  The backslash before it is *not* about guarding it from
> substitution inside here-doc; it is to pass literal "$" into the
> string, which is the last parameter to test_expect_success, that
> gets eval'ed.
>

Yes, the escaping here comes from double-quote of test_expect_success
instead of here-doc.

> The original of this one, for example, would probably have been
> better if written like so:
>
> test_expect_success 'advice from failed cherry-pick' '
>         pristine_detach initial &&
>         SQ='\'' &&
>
>         picked=$(git rev-parse --short picked) &&
>         cat <<-EOF >expected &&
>         error: could not apply $picked... picked
>         hint: after resolving the conflicts, mark the corrected paths
>         hint: with ${SQ}git add <paths>${SQ} or ${SQ}git rm <paths>${SQ}
>         hint: and commit the result with ${SQ}git commit${SQ}
>         EOF
>         test_must_fail git cherry-pick picked 2>actual &&
>
>         test_cmp expected actual
> '
>

Um? This section is not working for me.

./test-lib.sh: eval: line 917: unexpected EOF while looking for matching `''
./test-lib.sh: eval: line 932: syntax error: unexpected end of file

> And because there is no single quote in the updated text, it would
> become:
>
> test_expect_success 'advice from failed cherry-pick' '
>         pristine_detach initial &&
>
>         picked=$(git rev-parse --short picked) &&
>         cat <<-EOF >expected &&
>         error: could not apply $picked... picked
>         hint: Resolve all conflicts manually, mark them as resolved with
>         hint: "git add/rm <conflicted_files>", then run
>         EOF
>         test_must_fail git cherry-pick picked 2>actual &&
>
>         test_cmp expected actual
> '
>
> which makes it far easier to see that $picked needs to be
> substituted, and the "git add/rm" are to be enclosed in dq pair.

This section is exactly what I want. Using single quotes does make it
look a lot easier.

--
ZheNing Hu

  reply	other threads:[~2021-08-14  2:07 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-31  7:01 [PATCH 0/2] [GSOC] cherry-pick: fix bug when used with GIT_CHERRY_PICK_HELP ZheNing Hu via GitGitGadget
2021-07-31  7:01 ` [PATCH 1/2] " ZheNing Hu via GitGitGadget
2021-08-01 10:09   ` Phillip Wood
2021-08-02 13:34     ` ZheNing Hu
2021-07-31  7:01 ` [PATCH 2/2] [GSOC] cherry-pick: use better advice message ZheNing Hu via GitGitGadget
2021-08-01 10:14   ` Phillip Wood
2021-08-02 13:35     ` ZheNing Hu
2021-08-03  1:16 ` [PATCH v2 0/2] [GSOC] cherry-pick: fix bug when used with GIT_CHERRY_PICK_HELP ZheNing Hu via GitGitGadget
2021-08-03  1:16   ` [PATCH v2 1/2] " ZheNing Hu via GitGitGadget
2021-08-03 22:36     ` Junio C Hamano
2021-08-04  8:35       ` ZheNing Hu
2021-08-04 10:10         ` Phillip Wood
2021-08-04 17:31           ` Junio C Hamano
2021-08-05  5:36             ` ZheNing Hu
2021-08-03  1:16   ` [PATCH v2 2/2] [GSOC] cherry-pick: use better advice message ZheNing Hu via GitGitGadget
2021-08-05  5:48   ` [PATCH v3] " ZheNing Hu via GitGitGadget
2021-08-11 10:00     ` Phillip Wood
2021-08-13  8:08       ` ZheNing Hu
2021-08-13 20:14       ` Junio C Hamano
2021-08-14  2:07         ` ZheNing Hu [this message]
2021-08-17 10:09         ` Phillip Wood
2021-08-14 10:27     ` [PATCH v4] " ZheNing Hu via GitGitGadget
2021-08-14 20:32       ` Junio C Hamano
2021-08-15 12:48         ` ZheNing Hu
2021-08-16  0:55       ` [PATCH v5] " ZheNing Hu via GitGitGadget
2021-08-18  9:51         ` Phillip Wood
2021-08-19  1:55           ` ZheNing Hu
2021-08-19  2:07             ` ZheNing Hu
2021-08-19  5:51         ` [PATCH v6] " ZheNing Hu via GitGitGadget
2021-08-19 17:10           ` Junio C Hamano
2021-08-21  1:40             ` ZheNing Hu
2021-08-22 13:08           ` [PATCH v7] " ZheNing Hu via GitGitGadget

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