From: ZheNing Hu <adlternative@gmail.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: "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>
Subject: Re: [PATCH] [GSOC] cherry-pick: fix bug when used with GIT_CHERRY_PICK_HELP
Date: Fri, 23 Jul 2021 17:37:42 +0800 [thread overview]
Message-ID: <CAOLTT8Ty47fyY7T3d68CYPKh9k+HAHsnCLJ=F0KaLm+0gp3+EQ@mail.gmail.com> (raw)
In-Reply-To: <xmqqo8au82i0.fsf@gitster.g>
Junio C Hamano <gitster@pobox.com> 于2021年7月23日周五 上午5:25写道:
>
> "ZheNing Hu via GitGitGadget" <gitgitgadget@gmail.com> writes:
>
> > From: ZheNing Hu <adlternative@gmail.com>
> >
> > If we set the value of the environment variable GIT_CHERRY_PICK_HELP
> > when using `git cherry-pick`, CHERRY_PICK_HEAD will be deleted, then
> > we will get an error when we try to use `git cherry-pick --continue`
> > or other cherr-pick command.
>
> I think that the GIT_CHERRY_PICK_HELP is an implemention detail for
> various forms of rebase to use cherry-pick as a backend and not for
> use by end users.
>
But someone complain to me that the cherry-pick advice is not good enough.
Think about a git newbie is cherry-picking a patch series containing
several commits,
E.g.
git cherry-pick dev~3..dev
And then he (she) will see these advice info:
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'
After he resolving git conflict, execute 'git commit' according to the
prompt, A terrible thing happened: CHERRY_PICK_HEAD is deleted
by git and no errors are output. But in fact .git/sequencer still exists,
Wait until he uses the cherry-pick command next time, the error appears:
error: cherry-pick is already in progress
hint: try "git cherry-pick (--continue | --abort | --quit)"
fatal: cherry-pick failed
So we should not encourage users to use git commit when git cherry-pick.
It would be great if it could provide advice similar to rebase, like this:
Once you are satisfied with your changes, run
git cherry-pick --continue
> I strongly suspect that the right solution for the breakage is to
> unsetenv(GIT_CHERRY_PICK_HELP) in cmd_cherry_pick() without touching
> sequencer.c at all.
>
> It _is_ ugly that a helper that is responsible for emitting an
> advise message also makes a decision whether the pseudo-ref gets
> deleted or not, but a fix to that problem should be done byy making
> the logic for the decision less complex, not more.
>
May be you are right :)
> So, I am not enthused to see this change.
Thanks.
--
ZheNing Hu
next prev parent reply other threads:[~2021-07-23 9:37 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-22 14:06 [PATCH] [GSOC] cherry-pick: fix bug when used with GIT_CHERRY_PICK_HELP ZheNing Hu via GitGitGadget
2021-07-22 21:25 ` Junio C Hamano
2021-07-23 9:37 ` ZheNing Hu [this message]
2021-07-23 17:01 ` Felipe Contreras
2021-07-24 14:01 ` [PATCH v2] " ZheNing Hu via GitGitGadget
2021-07-27 19:43 ` Phillip Wood
2021-07-27 20:44 ` Junio C Hamano
2021-07-27 21:00 ` Junio C Hamano
2021-07-28 9:56 ` Phillip Wood
2021-07-28 10:56 ` ZheNing Hu
2021-07-28 17:24 ` Junio C Hamano
2021-07-28 11:34 ` ZheNing Hu
2021-07-28 17:26 ` Junio C Hamano
2021-07-28 7:39 ` ZheNing Hu
2021-07-28 9:46 ` Phillip Wood
2021-07-28 11:01 ` ZheNing Hu
2021-07-28 16:52 ` Phillip Wood
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