From: Sergey Organov <sorganov@gmail.com>
To: Jeff King <peff@peff.net>
Cc: Junio C Hamano <gitster@pobox.com>,
git@vger.kernel.org, Chris Torek <chris.torek@gmail.com>
Subject: Re: [PATCH v2 0/7] making log --first-parent imply -m
Date: Wed, 05 Aug 2020 01:15:27 +0300 [thread overview]
Message-ID: <87y2muvz0g.fsf@osv.gnss.ru> (raw)
In-Reply-To: <20200804220740.GA2022650@coredump.intra.peff.net> (Jeff King's message of "Tue, 4 Aug 2020 18:07:40 -0400")
Jeff King <peff@peff.net> writes:
> On Wed, Aug 05, 2020 at 12:41:25AM +0300, Sergey Organov wrote:
>
>> >> It's 4 lines above, as it's in fact common for all the cases but the
>> >> first one.
>> >
>> > Ah, I missed that. That raises more questions, though. ;)
>> >
>> > For "-m" we do not need to set revs->diff; why do we need to do so
>> > here?
>>
>> Good question!
>>
>> I believe --diff-merges=all should reset revs->diff back to 0 to
>> entirely undo all the effects of '-c' and '--cc', provided those
>> appeared before on the command-line, that '-m' fails to do.
>
> Making it counteract "--cc" makes sense, but revs->diff is used for much
> more than that. So "--cc" sets revs->diff to 1, but so do many other
> unrelated options (e.g., "--full-diff" for one).
>
> I think to do it right you'd need to have this part of the code just set
> a single enum variable, like:
>
> ...
> else if (!strcmp(arg, "--cc")) {
> revs->diff_merges = DIFF_MERGES_DENSE_COMBINED;
> } else if (!strcmp(arg, "-m")) {
> revs->diff_merges = DIFF_MERGES_ALL_PARENTS;
> }
> ...etc...
>
> and then later resolve that into the set of flags we need:
>
> switch (revs->diff_merges) {
> case DIFF_MERGES_DENSE_COMBINED:
> revs->diff = 1;
> revs->dense_combined_merges = 1;
> revs->combine_merges = 1;
> revs->ignore_merges = 0;
> break;
> case DIFF_MERGES_ALL_PARENTS:
> revs->ignore_merges = 0;
> break;
> ...etc...
> }
>
> it may even be that we can get rid of the separate combine_merges and
> dense_combined_merges flag and just have callers look at
> rev.diff_merges, which would simplify the code even further. But that
> cleanup could also come later on top.
Sounds like a plan! I like it.
Thanks,
-- Sergey
next prev parent reply other threads:[~2020-08-04 22:15 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-28 16:36 [PATCH 0/3] making --first-parent imply -m Jeff King
2020-07-28 16:36 ` [PATCH 1/3] log: drop "--cc implies -m" logic Jeff King
2020-07-28 16:38 ` [PATCH 2/3] revision: add "--ignore-merges" option to counteract "-m" Jeff King
2020-07-28 17:52 ` Chris Torek
2020-07-29 18:42 ` Jeff King
2020-07-28 21:01 ` Junio C Hamano
2020-07-29 18:22 ` Jeff King
2020-07-29 18:30 ` Jeff King
2020-07-29 18:53 ` Junio C Hamano
2020-07-28 16:39 ` [PATCH 3/3] log: enable "-m" automatically with "--first-parent" Jeff King
2020-07-28 16:47 ` [PATCH 0/3] making --first-parent imply -m Jeff King
2020-07-28 16:48 ` Junio C Hamano
2020-07-28 16:53 ` Jeff King
2020-07-28 16:55 ` Taylor Blau
2020-07-29 20:10 ` [PATCH v2 0/7] making log " Jeff King
2020-07-29 20:10 ` [PATCH v2 1/7] log: drop "--cc implies -m" logic Jeff King
2020-07-29 20:10 ` [PATCH v2 2/7] revision: add "--no-diff-merges" option to counteract "-m" Jeff King
2020-07-29 20:10 ` [PATCH v2 3/7] log: enable "-m" automatically with "--first-parent" Jeff King
2020-07-29 20:28 ` Junio C Hamano
2020-07-29 20:11 ` [PATCH v2 4/7] doc/git-log: move "Diff Formatting" from rev-list-options Jeff King
2020-07-29 20:56 ` Junio C Hamano
2020-07-29 21:02 ` Jeff King
2020-07-29 20:11 ` [PATCH v2 5/7] doc/git-log: drop "-r" diff option Jeff King
2020-07-29 20:12 ` [PATCH v2 6/7] doc/git-log: move "-t" into diff-options list Jeff King
2020-07-29 21:10 ` Junio C Hamano
2020-07-29 21:55 ` Jeff King
2020-07-29 20:12 ` [PATCH v2 7/7] doc/git-log: clarify handling of merge commit diffs Jeff King
2020-07-29 21:03 ` [PATCH v2 0/7] making log --first-parent imply -m Chris Torek
2020-07-29 21:41 ` Sergey Organov
2020-07-31 23:08 ` Jeff King
2020-08-02 12:59 ` Sergey Organov
2020-08-02 17:35 ` Junio C Hamano
2020-08-03 15:47 ` Sergey Organov
2020-08-03 16:35 ` Junio C Hamano
2020-08-03 16:41 ` Sergey Organov
2020-08-03 17:21 ` Junio C Hamano
2020-08-03 20:25 ` Sergey Organov
2020-08-03 20:58 ` Jeff King
2020-08-03 21:16 ` Sergey Organov
2020-08-03 18:08 ` Jeff King
2020-08-03 20:00 ` Sergey Organov
2020-08-03 20:55 ` Jeff King
2020-08-03 21:18 ` Sergey Organov
2020-08-04 17:50 ` Sergey Organov
2020-08-04 19:42 ` Junio C Hamano
2020-08-04 20:00 ` Jeff King
2020-08-04 20:55 ` Sergey Organov
2020-08-04 21:22 ` Jeff King
2020-08-04 21:55 ` Junio C Hamano
2020-08-04 22:06 ` Sergey Organov
2020-08-04 22:14 ` Jeff King
2020-08-04 22:49 ` Junio C Hamano
2020-08-07 8:26 ` Jeff King
2020-08-07 9:25 ` Sergey Organov
2020-08-07 17:43 ` Junio C Hamano
2020-08-07 17:52 ` Sergey Organov
2020-08-07 19:01 ` Junio C Hamano
2020-08-07 19:12 ` Sergey Organov
2020-08-07 19:20 ` Jeff King
2020-08-07 19:28 ` Sergey Organov
2020-08-07 19:46 ` Junio C Hamano
2020-08-07 20:29 ` Sergey Organov
2020-08-07 20:39 ` Junio C Hamano
2020-08-07 21:08 ` Sergey Organov
2020-08-07 21:54 ` Junio C Hamano
2020-08-07 23:07 ` Sergey Organov
2020-08-04 22:53 ` Sergey Organov
2020-08-04 21:21 ` Sergey Organov
2020-08-04 21:26 ` Jeff King
2020-08-04 19:58 ` Jeff King
2020-08-04 20:56 ` Sergey Organov
2020-08-04 21:25 ` Jeff King
2020-08-04 21:41 ` Sergey Organov
2020-08-04 22:07 ` Jeff King
2020-08-04 22:15 ` Sergey Organov [this message]
2020-08-04 21:27 ` Junio C Hamano
2020-08-04 21:44 ` Sergey Organov
2020-08-04 21:58 ` Sergey Organov
2020-08-04 22:08 ` Jeff King
2020-08-04 22:26 ` [PATCH] revision: fix die() message for "--unpacked=" Sergey Organov
2020-08-05 0:03 ` Junio C Hamano
2020-08-05 15:37 ` [PATCH v2 0/7] making log --first-parent imply -m Sergey Organov
2020-08-05 16:05 ` Junio C Hamano
2020-08-05 17:55 ` Sergey Organov
2020-08-05 19:24 ` Junio C Hamano
2020-08-05 20:27 ` Sergey Organov
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