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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, Chris Torek <chris.torek@gmail.com>
Subject: Re: [PATCH v2 0/7] making log --first-parent imply -m
Date: Tue, 4 Aug 2020 15:58:30 -0400	[thread overview]
Message-ID: <20200804195830.GA2014743@coredump.intra.peff.net> (raw)
In-Reply-To: <874kpi47xj.fsf@osv.gnss.ru>

On Tue, Aug 04, 2020 at 08:50:16PM +0300, Sergey Organov wrote:

> Attached is rather minimal incompatible change to --diff-merges that'd
> allow extensions in the future, to get out of urge for the discussed
> changes. I'm going to follow-up with actual improvements and I'm aware
> it lacks documentation changes.

Thanks, I like the direction here. Definitely it would need
documentation, but also tests (probably in t4013 alongside the ones my
series added; in fact you'd probably need to adjust my tests for the
non-optional argument).

> diff --git a/revision.c b/revision.c
> index 669bc856694f..dcdff59bc36a 100644
> --- a/revision.c
> +++ b/revision.c
> @@ -2323,10 +2323,31 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
>  		revs->diff = 1;
>  		revs->diffopt.flags.recursive = 1;
>  		revs->diffopt.flags.tree_in_recursive = 1;
> -	} else if (!strcmp(arg, "-m") || !strcmp(arg, "--diff-merges")) {
> +	} else if ((argcount = parse_long_opt("diff-merges", argv, &optarg))) {
>  		revs->ignore_merges = 0;
> +		if (!strcmp(optarg, "off")) {
> +			revs->ignore_merges = 1;
> +		} else if (!strcmp(optarg, "all")) {
> +			revs->diff = 0;

Should this be revs->ignore_merges = 0?

> +		} else if (!strcmp(optarg, "c")) {
> +			revs->diff = 1;
> +			revs->dense_combined_merges = 0;
> +			revs->combine_merges = 1;
> +		} else if (!strcmp(optarg, "cc")) {
> +			revs->diff = 1;
> +			revs->dense_combined_merges = 1;
> +			revs->combine_merges = 1;
> +		} else if (!strcmp(optarg, "combined-all-paths")) {
> +			revs->diff = 1;
> +			revs->combined_all_paths = 1;

I think Junio's suggestion to push these out to a separate patch is a
good one.

It's unfortunate that we have to duplicate all of the various options
that get set (from the "--cc", etc, blocks). But I think the boilerplate
for pushing it into a helper would make it even harder to read.

> +		} else {
> +			die("--diff-merges: unknown value '%s'.", optarg);
> +		}

A few nits:

  - we usually don't have a period at the end of our error messages

  - this should probably be marked for translation, i.e.,
    die(_("translated message"), optarg)

  - I think other similar messages are more like:

      unknown value for --diff-merges: %s

> +		return argcount;
>  	} else if (!strcmp(arg, "--no-diff-merges")) {
>  		revs->ignore_merges = 1;

I thought at first that the --no- form would be handled by
parse_long_opt() via the parseopt code, but it is not using parseopt at
all. :) So it is correct to keep this.

-Peff

  parent reply	other threads:[~2020-08-04 19:58 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-28 16:36 [PATCH 0/3] making " 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 [this message]
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
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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