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From: Jeff King <peff@peff.net>
To: "Đoàn Trần Công Danh" <congdanhqx@gmail.com>
Cc: git@vger.kernel.org, "Lukáš Doktor" <ldoktor@redhat.com>,
	"Christian Couder" <chriscool@tuxfamily.org>
Subject: Re: [PATCH 3/3] bisect--helper: parse subcommand with OPT_SUBCOMMAND
Date: Fri, 4 Nov 2022 09:00:25 -0400	[thread overview]
Message-ID: <Y2UM6S+QUFkhz5d4@coredump.intra.peff.net> (raw)
In-Reply-To: <76c585d22bf415e719762fcf5decf4b71efa5bfb.1667561761.git.congdanhqx@gmail.com>

On Fri, Nov 04, 2022 at 06:40:12PM +0700, Đoàn Trần Công Danh wrote:

> As of it is, we're parsing subcommand with OPT_CMDMODE, which will
> continue to parse more options even if the command has been found.
> 
> When we're running "git bisect run" with a command that expecting
> a "--log" or "--no-log" arguments, or one of those "--bisect-..."
> arguments, bisect--helper may mistakenly think those options are
> bisect--helper's option.

Right.

> We may fix those problems by passing "--" when calling from
> git-bisect.sh, and skip that "--" in bisect--helper. However, it may
> interfere with user's "--".

I think it won't interfere. A user can't put "--" as a separator now; it
gets taken as part of the command. So if we consistently added one in
the caller and stripped it away in bisect--helper, that would work
correctly (and if the user did have one later in their command, it would
be preserved as it is now).

That said, I do think your solution is nicer, and is potentially fixing
similar problems in other subcommand modes, too.

> Let's parse subcommand with OPT_SUBCOMMAND since that API was born for
> this specific use-case.

The implication here being that OPT_SUBCOMMAND stops parsing as soon as
it hits a subcommand, I assume.

>  builtin/bisect--helper.c    | 86 +++++++------------------------------
>  git-bisect.sh               | 20 ++++-----

The patch here looks sensible, but...

> +# We want to make sure --log is not eaten
> +test_expect_success '"git bisect run" simple case' '
> +	git bisect start &&
> +	git bisect good $HASH1 &&
> +	git bisect bad $HASH4 &&
> +	git bisect run printf "%s\n" --log >my_bisect_log.txt &&
> +	grep -e --log my_bisect_log.txt &&
> +	git bisect reset
> +'

...since you removed --log in the first commit, I think this would pass
even before this patch. You'd need to use another option like
--bisect-reset to show the problem. Of course then it is trivial that
the patch fixes it, since "--bisect-reset" becomes "bisect-reset"
afterwards. So there are no options left to parse at that point. But it
would be the best we could do to demonstrate it.

-Peff

  reply	other threads:[~2022-11-04 13:00 UTC|newest]

Thread overview: 106+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-04  6:31 "git bisect run" strips "--log" from the list of arguments Lukáš Doktor
2022-11-04  9:45 ` Jeff King
2022-11-04 11:10   ` Đoàn Trần Công Danh
2022-11-04 12:51     ` Jeff King
2022-11-04 11:36   ` Ævar Arnfjörð Bjarmason
2022-11-04 12:45     ` Jeff King
2022-11-04 13:07       ` Ævar Arnfjörð Bjarmason
2022-11-04 12:37   ` SZEDER Gábor
2022-11-04 12:44     ` Jeff King
2022-11-04 11:40 ` [PATCH 0/3] Convert git-bisect--helper to OPT_SUBCOMMAND Đoàn Trần Công Danh
2022-11-04 11:40   ` [PATCH 1/3] bisect--helper: remove unused options Đoàn Trần Công Danh
2022-11-04 12:53     ` Jeff King
2022-11-04 11:40   ` [PATCH 2/3] bisect--helper: move all subcommands into their own functions Đoàn Trần Công Danh
2022-11-04 12:55     ` Jeff King
2022-11-04 13:32     ` Ævar Arnfjörð Bjarmason
2022-11-04 14:03       ` Đoàn Trần Công Danh
2022-11-04 11:40   ` [PATCH 3/3] bisect--helper: parse subcommand with OPT_SUBCOMMAND Đoàn Trần Công Danh
2022-11-04 13:00     ` Jeff King [this message]
2022-11-04 13:46     ` Ævar Arnfjörð Bjarmason
2022-11-04 14:07       ` Đoàn Trần Công Danh
2022-11-04 13:55   ` [PATCH 0/3] Convert git-bisect--helper to OPT_SUBCOMMAND Ævar Arnfjörð Bjarmason
2022-11-05 17:03   ` [PATCH v2 " Đoàn Trần Công Danh
2022-11-05 17:03     ` [PATCH v2 1/3] bisect--helper: remove unused options Đoàn Trần Công Danh
2022-11-05 17:03     ` [PATCH v2 2/3] bisect--helper: move all subcommands into their own functions Đoàn Trần Công Danh
2022-11-05 17:13       ` Đoàn Trần Công Danh
2022-11-05 17:03     ` [PATCH v2 3/3] bisect--helper: parse subcommand with OPT_SUBCOMMAND Đoàn Trần Công Danh
2022-11-05 17:07     ` [PATCH 00/13] Turn git-bisect to be builtin Đoàn Trần Công Danh
2022-11-05 17:07       ` [PATCH 01/13] bisect tests: test for v2.30.0 "bisect run" regressions Đoàn Trần Công Danh
2022-11-07 21:31         ` Ævar Arnfjörð Bjarmason
2022-11-08  1:17           ` Đoàn Trần Công Danh
2022-11-05 17:07       ` [PATCH 02/13] bisect: refactor bisect_run() to match CodingGuidelines Đoàn Trần Công Danh
2022-11-05 17:07       ` [PATCH 03/13] bisect--helper: pass arg[cv] down to do_bisect_run Đoàn Trần Công Danh
2022-11-05 17:07       ` [PATCH 04/13] bisect: fix output regressions in v2.30.0 Đoàn Trần Công Danh
2022-11-05 17:07       ` [PATCH 05/13] bisect run: keep some of the post-v2.30.0 output Đoàn Trần Công Danh
2022-11-07 21:40         ` Ævar Arnfjörð Bjarmason
2022-11-08  1:26           ` Đoàn Trần Công Danh
2022-11-08  3:11             ` Ævar Arnfjörð Bjarmason
2022-11-05 17:07       ` [PATCH 06/13] bisect--helper: remove unused arguments from do_bisect_run Đoàn Trần Công Danh
2022-11-05 17:07       ` [PATCH 07/13] bisect--helper: pretend we're real bisect when report error Đoàn Trần Công Danh
2022-11-07 21:29         ` Ævar Arnfjörð Bjarmason
2022-11-05 17:07       ` [PATCH 08/13] bisect test: test exit codes on bad usage Đoàn Trần Công Danh
2022-11-05 17:07       ` [PATCH 09/13] bisect--helper: emit usage for "git bisect" Đoàn Trần Công Danh
2022-11-05 17:07       ` [PATCH 10/13] bisect--helper: make `state` optional Đoàn Trần Công Danh
2022-11-05 17:07       ` [PATCH 11/13] bisect--helper: remove subcommand state Đoàn Trần Công Danh
2022-11-07 21:45         ` Ævar Arnfjörð Bjarmason
2022-11-08  1:27           ` Đoàn Trần Công Danh
2022-11-05 17:07       ` [PATCH 12/13] bisect--helper: log: allow arbitrary number of arguments Đoàn Trần Công Danh
2022-11-05 17:07       ` [PATCH 13/13] Turn `git bisect` into a full built-in Đoàn Trần Công Danh
2022-11-05 23:18     ` [PATCH v2 0/3] Convert git-bisect--helper to OPT_SUBCOMMAND Taylor Blau
2022-11-10 16:36   ` [PATCH v3 " Đoàn Trần Công Danh
2022-11-10 16:36     ` [PATCH v3 1/3] bisect--helper: remove unused options Đoàn Trần Công Danh
2022-11-11 12:42       ` Ævar Arnfjörð Bjarmason
2022-11-10 16:36     ` [PATCH v3 2/3] bisect--helper: move all subcommands into their own functions Đoàn Trần Công Danh
2022-11-11 13:51       ` Ævar Arnfjörð Bjarmason
2022-11-10 16:36     ` [PATCH v3 3/3] bisect--helper: parse subcommand with OPT_SUBCOMMAND Đoàn Trần Công Danh
2022-11-10 16:36     ` [PATCH v2 00/11] Turn git-bisect to be builtin Đoàn Trần Công Danh
2022-11-10 16:36       ` [PATCH v2 01/11] bisect tests: test for v2.30.0 "bisect run" regressions Đoàn Trần Công Danh
2022-11-10 16:36       ` [PATCH v2 02/11] bisect: refactor bisect_run() to match CodingGuidelines Đoàn Trần Công Danh
2022-11-10 16:36       ` [PATCH v2 03/11] bisect: fix output regressions in v2.30.0 Đoàn Trần Công Danh
2022-11-10 16:36       ` [PATCH v2 04/11] bisect run: keep some of the post-v2.30.0 output Đoàn Trần Công Danh
2022-11-10 16:36       ` [PATCH v2 05/11] bisect-run: verify_good: account for non-negative exit status Đoàn Trần Công Danh
2022-11-10 16:36       ` [PATCH v2 06/11] bisect--helper: identify as bisect when report error Đoàn Trần Công Danh
2022-11-10 16:36       ` [PATCH v2 07/11] bisect test: test exit codes on bad usage Đoàn Trần Công Danh
2022-11-10 16:36       ` [PATCH v2 08/11] bisect--helper: emit usage for "git bisect" Đoàn Trần Công Danh
2022-11-10 16:36       ` [PATCH v2 09/11] bisect--helper: handle states directly Đoàn Trần Công Danh
2022-11-10 16:36       ` [PATCH v2 10/11] bisect--helper: log: allow arbitrary number of arguments Đoàn Trần Công Danh
2022-11-11 14:01         ` Ævar Arnfjörð Bjarmason
2022-11-10 16:36       ` [PATCH v2 11/11] Turn `git bisect` into a full built-in Đoàn Trần Công Danh
2022-11-11 13:53         ` Ævar Arnfjörð Bjarmason
2022-11-11 15:37           ` Jeff King
2022-11-11 21:09             ` Ævar Arnfjörð Bjarmason
2022-11-11 22:07       ` [PATCH v2 00/11] Turn git-bisect to be builtin Taylor Blau
2022-11-15 19:18         ` Taylor Blau
2022-11-15 19:36           ` Jeff King
2022-11-15 19:40             ` Taylor Blau
2022-11-11 12:32     ` [PATCH v3 0/3] Convert git-bisect--helper to OPT_SUBCOMMAND Ævar Arnfjörð Bjarmason
2022-11-04 13:22 ` [PATCH 00/13] bisect: v2.30.0 "run" regressions + make it built-in Ævar Arnfjörð Bjarmason
2022-11-04 13:22   ` [PATCH 01/13] bisect tests: test for v2.30.0 "bisect run" regressions Ævar Arnfjörð Bjarmason
2022-11-04 13:22   ` [PATCH 02/13] bisect: refactor bisect_run() to match CodingGuidelines Ævar Arnfjörð Bjarmason
2022-11-04 13:22   ` [PATCH 03/13] bisect: fix output regressions in v2.30.0 Ævar Arnfjörð Bjarmason
2022-11-04 13:22   ` [PATCH 04/13] bisect run: fix "--log" eating regression " Ævar Arnfjörð Bjarmason
2022-11-04 13:22   ` [PATCH 05/13] bisect run: keep some of the post-v2.30.0 output Ævar Arnfjörð Bjarmason
2022-11-04 13:22   ` [PATCH 06/13] bisect test: test exit codes on bad usage Ævar Arnfjörð Bjarmason
2022-11-04 13:22   ` [PATCH 07/13] bisect--helper: emit usage for "git bisect" Ævar Arnfjörð Bjarmason
2022-11-04 13:22   ` [PATCH 08/13] bisect--helper: have all functions take state, argc, argv, prefix Ævar Arnfjörð Bjarmason
2022-11-04 13:22   ` [PATCH 09/13] parse-options API: don't restrict OPT_SUBCOMMAND() to one *_fn type Ævar Arnfjörð Bjarmason
2022-11-05  8:32     ` René Scharfe
2022-11-05 11:34       ` Đoàn Trần Công Danh
2022-11-05 21:32         ` Phillip Wood
2022-11-05 13:52       ` Ævar Arnfjörð Bjarmason
2022-11-05 16:36         ` Phillip Wood
2022-11-05 21:59           ` Ævar Arnfjörð Bjarmason
2022-11-05 17:26         ` René Scharfe
2022-11-05 22:33           ` Ævar Arnfjörð Bjarmason
2022-11-06  8:25             ` René Scharfe
2022-11-06 13:28               ` Ævar Arnfjörð Bjarmason
2022-11-12 10:42                 ` René Scharfe
2022-11-12 16:34                   ` Jeff King
2022-11-12 16:55                     ` Ævar Arnfjörð Bjarmason
2022-11-13 17:31                       ` René Scharfe
2022-11-04 13:22   ` [PATCH 10/13] bisect--helper: remove dead --bisect-{next-check,autostart} code Ævar Arnfjörð Bjarmason
2022-11-04 13:22   ` [PATCH 11/13] bisect--helper: convert to OPT_SUBCOMMAND_CB() Ævar Arnfjörð Bjarmason
2022-11-04 13:22   ` [PATCH 12/13] bisect--helper: make `state` optional Ævar Arnfjörð Bjarmason
2022-11-04 13:22   ` [PATCH 13/13] Turn `git bisect` into a full built-in Ævar Arnfjörð Bjarmason
2022-11-05  0:13   ` [PATCH 00/13] bisect: v2.30.0 "run" regressions + make it built-in Taylor Blau
2022-11-10 12:50   ` Johannes Schindelin

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