From: Elijah Newren <newren@gmail.com>
To: 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 10:01:34 -0700 [thread overview]
Message-ID: <CABPp-BE_mimSRg5wf0Yzn2s-dX=64ZS1jGszqwHzr3aju0bj=A@mail.gmail.com> (raw)
In-Reply-To: <b187cb5f-a6c8-2908-e3fd-e1210e6970e0@gmail.com>
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.
:-)
> > 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.
next prev parent reply other threads:[~2020-04-02 17:01 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 [this message]
2020-04-02 19:05 ` Phillip Wood
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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