From: Junio C Hamano <gitster@pobox•com>
To: Jeff King <peff@peff•net>
Cc: "brian m. carlson" <sandals@crustytoothpaste•net>,
Kyle Meyer <kyle@kyleam•com>,
git@vger•kernel.org, Sahil Dua <sahildua2305@gmail•com>
Subject: Re: [PATCH 5/6] rev-list: check reflog_info before showing usage
Date: Wed, 05 Jul 2017 11:07:35 -0700 [thread overview]
Message-ID: <xmqqd19eiwpk.fsf@gitster.mtv.corp.google.com> (raw)
In-Reply-To: <20170705080655.giw6wjsblepcf5aw@sigill.intra.peff.net> (Jeff King's message of "Wed, 5 Jul 2017 04:06:56 -0400")
Jeff King <peff@peff•net> writes:
> When git-rev-list sees no pending commits, it shows a usage
> message. This works even when reflog-walking is requested,
> because the reflog-walk code currently puts the reflog tips
> into the pending queue.
>
> In preparation for refactoring the reflog-walk code, let's
> explicitly check whether we have any reflogs to walk. For
> now this is a noop, but the existing reflog tests will make
> sure that it kicks in after the refactoring. Likewise, we'll
> add a test that "rev-list -g" without specifying any reflogs
> continues to fail (so that we know our check does not kick
> in too aggressively).
>
> Note that the implementation needs to go into its own
> sub-function, as the walk code does not expose its innards
> outside of reflog-walk.c.
>
> Signed-off-by: Jeff King <peff@peff•net>
> ---
> This is actually the main "gotcha" I'm worried about with this series.
> I'm not sure if any other code would care about seeing the pending items
> in revs->commits. I still think the series is the right direction; if
> there is such a place, we'd want to teach it to handle reflog walking in
> a similar way, too.
Ah, very good thinking---when I was following along your drafts to
bypass the revs.commits queue for reflog walking, I didn't think of
this one.
Perhaps "!revs.commits && reflog_walk_empty(revs.reflog_info)" may
want to become a macro "walk_finished(&revs)" or something to
replace existing !revs.commits that is not accompanied by the check
on .reflog_info field?
next prev parent reply other threads:[~2017-07-05 18:07 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-21 21:40 Truncating HEAD reflog on branch move brian m. carlson
2017-06-21 21:46 ` Junio C Hamano
2017-06-21 23:04 ` Kyle Meyer
2017-06-21 23:12 ` Kyle Meyer
2017-06-22 15:16 ` Jeff King
2017-06-22 18:32 ` Junio C Hamano
2017-06-22 18:45 ` Jeff King
2017-06-22 19:03 ` Junio C Hamano
2017-06-22 20:21 ` Jeff King
2017-06-22 20:32 ` Junio C Hamano
2017-06-22 21:52 ` Jeff King
2017-06-22 22:25 ` Jeff King
2017-06-23 3:13 ` Jeff King
2017-07-04 19:58 ` brian m. carlson
2017-07-04 21:24 ` Jeff King
2017-07-04 21:27 ` brian m. carlson
2017-07-04 21:28 ` Jeff King
2017-07-05 1:49 ` Junio C Hamano
2017-07-05 7:55 ` [PATCH 0/6] fixing reflog-walk oddities Jeff King
2017-07-05 7:57 ` [PATCH 1/6] reflog-walk: skip over double-null oid due to HEAD rename Jeff King
2017-07-05 17:34 ` Junio C Hamano
2017-07-05 21:21 ` Jeff King
2017-07-05 8:00 ` [PATCH 2/6] t1414: document some reflog-walk oddities Jeff King
2017-07-05 17:56 ` Junio C Hamano
2017-07-05 21:27 ` Jeff King
2017-07-05 22:45 ` Junio C Hamano
2017-07-06 7:16 ` Jeff King
2017-07-06 7:55 ` Jeff King
2017-07-06 15:42 ` Junio C Hamano
2017-07-07 5:19 ` Jeff King
2017-07-07 6:00 ` Junio C Hamano
2017-07-07 6:22 ` Jeff King
2017-07-05 20:05 ` Ramsay Jones
2017-07-05 21:30 ` Jeff King
2017-07-05 8:02 ` [PATCH 3/6] log: do not free parents when walking reflog Jeff King
2017-07-05 8:04 ` [PATCH 4/6] get_revision_1(): replace do-while with an early return Jeff King
2017-07-05 8:06 ` [PATCH 5/6] rev-list: check reflog_info before showing usage Jeff King
2017-07-05 18:07 ` Junio C Hamano [this message]
2017-07-05 21:31 ` Jeff King
2017-07-05 8:09 ` [PATCH 6/6] reflog-walk: stop using fake parents Jeff King
2017-07-07 0:32 ` Eric Wong
2017-07-07 3:02 ` Jeff King
2017-07-07 3:15 ` Jeff King
2017-07-10 9:42 ` Eric Wong
2017-07-10 11:20 ` Jeff King
2017-07-10 16:09 ` Junio C Hamano
2017-07-07 8:36 ` [PATCH v2 0/4] reflog-walk fixes for maint Jeff King
2017-07-07 8:37 ` [PATCH v2 1/4] reflog-walk: skip over double-null oid due to HEAD rename Jeff King
2017-07-07 8:39 ` [PATCH v2 2/4] reflog-walk: duplicate strings in complete_reflogs list Jeff King
2017-07-07 8:41 ` [PATCH v2 3/4] reflog-walk: don't free reflogs added to cache Jeff King
2017-07-07 8:43 ` [PATCH v2 4/4] reflog-walk: include all fields when freeing complete_reflogs Jeff King
2017-07-07 9:05 ` [PATCH v2 0/7] fixing reflog-walk oddities Jeff King
2017-07-07 9:06 ` [PATCH v2 1/7] t1414: document some " Jeff King
2017-07-07 9:21 ` Jeff King
2017-07-07 15:54 ` Kyle Meyer
2017-07-07 9:07 ` [PATCH v2 2/7] revision: disallow reflog walking with revs->limited Jeff King
2017-07-07 9:07 ` [PATCH v2 3/7] log: do not free parents when walking reflog Jeff King
2017-07-07 17:10 ` Junio C Hamano
2017-07-09 10:13 ` Jeff King
2017-07-09 16:59 ` Junio C Hamano
2017-07-10 13:27 ` Jeff King
2017-07-07 9:07 ` [PATCH v2 4/7] get_revision_1(): replace do-while with an early return Jeff King
2017-07-07 9:08 ` [PATCH v2 5/7] rev-list: check reflog_info before showing usage Jeff King
2017-07-07 9:14 ` [PATCH v2 6/7] reflog-walk: stop using fake parents Jeff King
2017-07-07 9:24 ` Jeff King
2017-07-07 15:54 ` Kyle Meyer
2017-07-09 10:08 ` Jeff King
2017-07-07 9:16 ` [PATCH v2 7/7] reflog-walk: apply --since/--until to reflog dates Jeff King
2017-07-07 20:15 ` [PATCH v2 0/4] reflog-walk fixes for maint Junio C Hamano
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