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From: Jeff King <peff@peff.net>
To: Sergey Organov <sorganov@gmail.com>
Cc: Junio C Hamano <gitster@pobox.com>, git@vger.kernel.org
Subject: Re: [PATCH] cherry-pick: do not error on non-merge commits when '-m 1' is specified
Date: Tue, 26 Mar 2019 12:32:04 -0400	[thread overview]
Message-ID: <20190326163204.GC29627@sigill.intra.peff.net> (raw)
In-Reply-To: <87h8bra1z6.fsf@javad.com>

On Mon, Mar 25, 2019 at 09:43:09AM +0300, Sergey Organov wrote:

> How about changing "git show -p M" to output "diff -p M^ M" rather than
> "diff-tree --cc M" for merge commits? It's really surprising specifying
> -p has no visible effect.

That's because "-p" is already the default, and the format selection is
orthogonal to the handling of merge commits. Providing "-m" would
actually override the "--cc" default (though "--first-parent -m" is
likely to be less noisy, per this discussion).

As far as defaults go, I dunno. The idea is that "--cc" would give you a
nice summary of what the merge _itself_ had to touch. I think that's
valuable, too. If we were starting from scratch, I think there could be
a discussion about whether one default is better than the other. But at
this point I have a hard time finding one so much obviously better than
the other to merit changing the behavior.

> Also, is current output of "git log -m", being extremely confusing,
> suitable for anything? Maybe consider to change it to output diff with
> respect to the first parent only? Though it's then a pity "-m" lacks
> argument here, similar to what it has in cherry-pick.

I've used "-m" without "--first-parent" sometimes in order to track down
mis-merges manually. It's not usually a big deal to say "--first-parent"
if that's what you want. But one thing I don't think is currently
possible is to ask only for the first-parent diff, but _not_ restrict
the actual traversal.

If that's what you mean by giving an argument to "-m", then yeah, I
think that would be a useful addition.

-Peff

  reply	other threads:[~2019-03-26 16:32 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-25 12:42 Sergey Organov
2018-06-21 15:54 ` Junio C Hamano
2018-06-22  9:16   ` Sergey Organov
2018-12-12  5:35   ` Sergey Organov
2018-12-13  4:20     ` Junio C Hamano
2018-12-13  6:35       ` Sergey Organov
2018-12-13 15:35         ` Sergey Organov
2018-12-14  2:36           ` Junio C Hamano
2018-12-14  4:39             ` [PATCH v2 0/4] Allow 'cherry-pick -m 1' for non-merge commits Sergey Organov
2018-12-14  4:53               ` [PATCH v2 4/4] t3506: validate '-m 1 -ff' is now accepted " Sergey Organov
2018-12-14  4:53               ` [PATCH v2 3/4] t3502: validate '-m 1' argument " Sergey Organov
2019-01-03 17:22                 ` SZEDER Gábor
2019-01-06 14:41                   ` Sergey Organov
2018-12-14  4:53               ` [PATCH v2 2/4] cherry-pick: do not error on non-merge commits when '-m 1' is specified Sergey Organov
2018-12-14  4:53               ` [PATCH v2 1/4] t3510: stop using '-m 1' to force failure mid-sequence of cherry-picks Sergey Organov
2018-12-25 12:39               ` [PATCH v2 0/4] Allow 'cherry-pick -m 1' for non-merge commits Sergey Organov, Sergey Organov
2018-12-26 22:52                 ` Junio C Hamano
2018-12-29  9:10                   ` Sergey Organov
2018-12-14  4:39             ` [PATCH v3 " Sergey Organov
2018-12-14  4:53               ` [PATCH v3 3/4] t3502: validate '-m 1' argument is now accepted " Sergey Organov
2018-12-14  4:53               ` [PATCH v3 1/4] t3510: stop using '-m 1' to force failure mid-sequence of cherry-picks Sergey Organov
2018-12-14  4:53               ` [PATCH v3 2/4] cherry-pick: do not error on non-merge commits when '-m 1' is specified Sergey Organov
2018-12-14  4:53               ` [PATCH v3 4/4] t3506: validate '-m 1 -ff' is now accepted for non-merge commits Sergey Organov
2019-03-19 11:29   ` [PATCH] cherry-pick: do not error on non-merge commits when '-m 1' is specified Sergey Organov
2019-03-20  0:38     ` Junio C Hamano
2019-03-20  5:09       ` Jeff King
2019-03-25  6:43       ` Sergey Organov
2019-03-26 16:32         ` Jeff King [this message]
2019-03-26 22:07           ` Elijah Newren
2019-03-26 22:20             ` Jeff King
2019-03-27  0:33               ` Elijah Newren
2019-03-27 13:54           ` Sergey Organov
  -- strict thread matches above, loose matches on Subject: below --
2018-05-25 12:42 Sergey Organov

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