From: Phillip Wood <phillip.wood123@gmail.com>
To: Elijah Newren <newren@gmail.com>,
Phillip Wood <phillip.wood@dunelm.org.uk>
Cc: Elijah Newren via GitGitGadget <gitgitgadget@gmail.com>,
Git Mailing List <git@vger.kernel.org>,
Jonathan Nieder <jrnieder@gmail.com>,
Paul Gevers <elbrus@debian.org>,
Ian Jackson <ijackson@chiark.greenend.org.uk>,
Alban Gruin <alban.gruin@gmail.com>,
Johannes Schindelin <Johannes.Schindelin@gmx.de>
Subject: Re: [PATCH] sequencer: honor GIT_REFLOG_ACTION
Date: Thu, 2 Apr 2020 20:05:17 +0100 [thread overview]
Message-ID: <09397e37-a22b-5159-b760-bae238ae3ed6@gmail.com> (raw)
In-Reply-To: <CABPp-BE_mimSRg5wf0Yzn2s-dX=64ZS1jGszqwHzr3aju0bj=A@mail.gmail.com>
Hi Elijah
On 02/04/2020 18:01, Elijah Newren wrote:
> Hi Phillip,
>
> On Thu, Apr 2, 2020 at 2:25 AM Phillip Wood <phillip.wood123@gmail.com> wrote:
>>
>> Hi Elijah
>>
>> Thanks for fixing this
>>
>> On 01/04/2020 21:31, Elijah Newren via GitGitGadget wrote:
>>> From: Elijah Newren <newren@gmail.com>
>>>
>>> There is a lot of code to honor GIT_REFLOG_ACTION throughout git,
>>> including some in sequencer.c; unfortunately, reflog_message() and its
>>> callers ignored it. Instruct reflog_message() to check the existing
>>> environment variable, and use it when present as an override to
>>> action_name().
>>>
>>> Also restructure pick_commits() to only temporarily modify
>>> GIT_REFLOG_ACTION for a short duration and then restore the old value,
>>> so that when we do this setting within a loop we do not keep adding "
>>> (pick)" substrings and end up with a reflog message of the form
>>> rebase (pick) (pick) (pick) (finish): returning to refs/heads/master
>>>
>>> Signed-off-by: Elijah Newren <newren@gmail.com>
>>> ---
>>> sequencer: honor GIT_REFLOG_ACTION
>>>
>>> I'm not the best with getenv/setenv. The xstrdup() wrapping is
>>> apparently necessary on mac and bsd. The xstrdup seems like it leaves us
>>> with a memory leak, but since setenv(3) says to not alter or free it, I
>>> think it's right. Anyone have any alternative suggestions?
>>>
>>> Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-746%2Fnewren%2Fhonor-reflog-action-in-sequencer-v1
>>> Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-746/newren/honor-reflog-action-in-sequencer-v1
>>> Pull-Request: https://github.com/git/git/pull/746
>>>
>>> sequencer.c | 9 +++++++--
>>> t/t3406-rebase-message.sh | 16 ++++++++--------
>>> 2 files changed, 15 insertions(+), 10 deletions(-)
>>>
>>> diff --git a/sequencer.c b/sequencer.c
>>> index e528225e787..5837fdaabbe 100644
>>> --- a/sequencer.c
>>> +++ b/sequencer.c
>>> @@ -3708,10 +3708,11 @@ static const char *reflog_message(struct replay_opts *opts,
>>> {
>>> va_list ap;
>>> static struct strbuf buf = STRBUF_INIT;
>>> + char *reflog_action = getenv("GIT_REFLOG_ACTION");
>>
>> Minor nit - you're using a string here rather that the pre-processor
>> constant that is used below
>
> Yeah, true. However, using a mixture of both styles is consistent
> with the current code's inconsistency about which one should be used.
> :-)
Nice!
>>> va_start(ap, fmt);
>>> strbuf_reset(&buf);
>>> - strbuf_addstr(&buf, action_name(opts));
>>> + strbuf_addstr(&buf, reflog_action ? reflog_action : action_name(opts));
>>> if (sub_action)
>>> strbuf_addf(&buf, " (%s)", sub_action);
>>> if (fmt) {
>>> @@ -3799,8 +3800,10 @@ static int pick_commits(struct repository *r,
>>> struct replay_opts *opts)
>>> {
>>> int res = 0, reschedule = 0;
>>> + char *prev_reflog_action;
>>>
>>> setenv(GIT_REFLOG_ACTION, action_name(opts), 0);
>>> + prev_reflog_action = xstrdup(getenv(GIT_REFLOG_ACTION));
>>
>> I'm confused as to why saving the environment variable immediately after
>> setting it works but the test shows it does - why doesn't this clobber
>> the value of GIT_REFLOG_ACTION set by the user?
>
> The third parameter, 0, means only set the environment variable if
> it's not already set.
Ah thanks, I thought I must be missing something fairly obvious but
couldn't see what it was
Best Wishes
Phillip
next prev parent reply other threads:[~2020-04-02 19:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-01 20:31 [PATCH] sequencer: honor GIT_REFLOG_ACTION Elijah Newren via GitGitGadget
2020-04-01 20:46 ` Junio C Hamano
2020-04-01 23:29 ` Ian Jackson
2020-04-02 5:15 ` Elijah Newren
2020-04-02 9:39 ` Phillip Wood
2020-04-02 17:40 ` Elijah Newren
2020-04-02 9:25 ` Phillip Wood
2020-04-02 17:01 ` Elijah Newren
2020-04-02 19:05 ` Phillip Wood [this message]
2020-04-07 14:50 ` Johannes Schindelin
2020-04-07 15:18 ` Elijah Newren
2020-04-07 22:37 ` Johannes Schindelin
2020-04-07 23:05 ` Junio C Hamano
2020-04-07 16:59 ` [PATCH v2] " Elijah Newren via GitGitGadget
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