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From: Duy Nguyen <pclouds@gmail.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Junio C Hamano <gitster@pobox.com>,
	Martin Fick <mfick@codeaurora.org>,
	Jacob Keller <jacob.keller@gmail.com>,
	Git List <git@vger.kernel.org>,
	repo-discuss@googlegroups.com
Subject: Re: storing cover letter of a patch series?
Date: Sun, 7 Aug 2016 12:42:06 +0200	[thread overview]
Message-ID: <CACsJy8DhDMkmq-WCVHSMYVTTfEXNFUUzz5Cq9hQj_tGRUTj3ZA@mail.gmail.com> (raw)
In-Reply-To: <20160807080857-mutt-send-email-mst@kernel.org>

On Sun, Aug 7, 2016 at 7:12 AM, Michael S. Tsirkin <mst@redhat.com> wrote:
> On Fri, Aug 05, 2016 at 08:39:58AM -0700, Junio C Hamano wrote:
>> "Michael S. Tsirkin" <mst@redhat.com> writes:
>>
>> > On Thu, Sep 10, 2015 at 11:39:49AM -0700, Junio C Hamano wrote:
>> >> The problem with "empty commit trick" is that it is a commit whose
>> >> sole purpose is to describe the series, and its presence makes it
>> >> clear where the series ends, but the topology does not tell where
>> >> the series begins, so it is an unsatisifactory half-measure.
>> >
>> > Actually, when using topic branches the series always ends at head, so
>> > it's better to keep the empty commit where series begins.
>>
>> But that would mean that you would need to destroy and recreate more
>> commits than you would need to.  If you have a five-commit series
>> (with the bottom "description" one, you would have six commits) and
>> you are already happy with the bottom two but want to update the
>> third one, you wuld have to "rebase -i" all six of them, reword the
>> bottom "description" to adjust it to describe the new version of the
>> third one _before_ you even do the actual update of the third one.
>>
>> That somehow feels backwards, and that backward-ness comes from the
>> fact that you abused a single-parent commit for the purpose it is
>> not meant to be used (i.e. they are to describe individual changes),
>> because you did not find a better existing mechanism (and I suspect
>> there isn't any, in which case the solution is to invent one, not
>> abusing an existing mechanism that is not suited for it).
>
> A flag that marks a commit "beginning of series" then?

git-notes was mentioned in this thread back in 2015, but I think it's
discarded because of the argument that's part of the cover letter was
not meant to be kept permanently. But I think we can still use it as a
local/temporary place for cover letter instead of the empty commit at
the topic's tip. It is a mark of the beginning of commit, it does not
require rewriting history when you update the cover letter, and
git-merge can be taught to pick it up when you're ready to set it in
stone.
-- 
Duy

  parent reply	other threads:[~2016-08-07 10:42 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-10 16:28 storing cover letter of a patch series? Jacob Keller
2015-09-10 17:41 ` Junio C Hamano
2015-09-10 18:02   ` Martin Fick
2015-09-10 18:38     ` Jacob Keller
2015-09-10 18:39     ` Junio C Hamano
2015-09-11 22:24       ` Junio C Hamano
2016-08-04 23:49       ` Michael S. Tsirkin
2016-08-05 15:39         ` Junio C Hamano
2016-08-05 21:20           ` Martin Fick
2016-08-05 21:23             ` Junio C Hamano
2016-08-06 16:51               ` Junio C Hamano
2016-08-07  5:12           ` Michael S. Tsirkin
2016-08-07  9:52             ` John Keeping
2016-08-07 10:42             ` Duy Nguyen [this message]
2016-08-08 17:42               ` Junio C Hamano
2016-08-09  7:12                 ` Michael J Gruber
2015-09-10 18:32   ` Jacob Keller
2015-09-10 18:44     ` Junio C Hamano
2015-09-10 18:46       ` Jacob Keller
2015-09-10 20:09         ` Philip Oakley
2015-09-10 21:03           ` Jacob Keller
2016-08-04 23:43             ` Michael S. Tsirkin
2015-09-10 18:58 ` Johannes Schindelin
2015-09-10 21:00   ` Jacob Keller
2015-09-10 21:21     ` Johannes Schindelin
2015-09-10 22:20       ` Philip Oakley
2015-09-12 22:51   ` [PATCH] doc: show usage of branch description Philip Oakley
2015-09-12 23:44     ` Jacob Keller
2015-09-14 12:01       ` Philip Oakley
2015-09-14 13:24         ` Philip Oakley
2015-09-14 17:00         ` Junio C Hamano
2015-09-15 16:06           ` Philip Oakley
2015-09-15 19:10           ` Philip Oakley
2015-09-14 14:10     ` [PATCH v2] " Philip Oakley
2015-09-11  8:30 ` storing cover letter of a patch series? Chris Packham
2015-09-18  4:03   ` Simon Glass
2016-08-08 17:27 ` Stefan Beller
2016-08-08 20:09   ` Junio C Hamano
2016-08-13  8:49   ` Duy Nguyen
2016-08-14  7:15     ` Jacob Keller
2016-08-15  6:28       ` Stefan Beller
2016-08-15  6:38         ` Jacob Keller
2016-08-15  6:49           ` Stefan Beller
2016-08-15  6:52             ` Jacob Keller
2016-08-15  9:40         ` Duy Nguyen
2016-08-15 12:37           ` Philip Oakley
2016-08-15 13:30             ` Duy Nguyen
2016-08-15 13:47               ` John Keeping
2016-08-15 20:09             ` Jacob Keller
2016-08-15 20:38               ` Junio C Hamano
2016-08-15 23:01                 ` Jacob Keller
2016-08-15 20:46               ` Philip Oakley
2016-08-16  3:45                 ` Duy Nguyen
2016-08-16  5:26                   ` Jacob Keller
2016-08-16  6:45                     ` Duy Nguyen
2016-08-16 15:52                       ` Jacob Keller
2016-08-16 21:29                       ` Philip Oakley

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