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From: Jacob Abel <jacobabel@nullpo.dev>
To: Junio C Hamano <gitster@pobox.com>
Cc: git@vger.kernel.org, "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Eric Sunshine" <sunshine@sunshineco.com>,
	"Phillip Wood" <phillip.wood123@gmail.com>,
	"Rubén Justo" <rjusto@gmail.com>, "Taylor Blau" <me@ttaylorr.com>,
	rsbecker@nexbridge.com
Subject: Re: [PATCH v5 2/4] worktree add: refactor opt exclusion tests
Date: Tue, 20 Dec 2022 23:29:27 +0000	[thread overview]
Message-ID: <20221220232920.wppkxkvuxkcoih4x@phi> (raw)
In-Reply-To: <xmqqsfhawwqf.fsf@gitster.g>

On 22/12/20 01:00PM, Junio C Hamano wrote:
> Jacob Abel <jacobabel@nullpo.dev> writes:
>
> > Pull duplicate test code into a function so that additional opt
> > combinations can be tested succinctly.
> >
> > Signed-off-by: Jacob Abel <jacobabel@nullpo.dev>
> > ---
> >  t/t2400-worktree-add.sh | 20 ++++++++++----------
> >  1 file changed, 10 insertions(+), 10 deletions(-)
>
> OK.
>
> > +# Helper function to test mutually exclusive options.
> > +test_wt_add_excl() {
>
> Have SP on both sides of (), i.e.
>
> 	test_wt_add_excl () {

Done.

>
> > +	local opts="$@" &&
> > +	test_expect_success "'worktree add' with '$opts' has mutually exclusive options" '
> > +		test_must_fail git worktree add $opts
> > +	'
> > +}
>
> In this particular case with the given arguments, it does not make a
> difference, but make it a habit to think twice if "$*" is what you
> want when you write "$@".  "$@" does a lot more than just concatenate
> $1, $2, ... with SP in between, and the use of $opts in the message
> merely wants the "concatenate with SP" behaviour, which is what "$*"
> is for.

Understood.

>
> I actually would write the above if I were doing this patch:
>
>     test_wt_add_excl () {
> 	test_expect_success "'worktree add' with $* has mutually exclusive options" '
> 		test_must_fail git worktree add "$@"
> 	'
>     }
>

Changed.

> Notice the use of "$@" on the "git worktree add" invocation?  This
> allows callers of test_wt_add_excl pass parameters with SP in it,
> thanks to the magic "$@".  Again, as I said earlier, for these
> callers ...
>
> > +test_wt_add_excl -b poodle -B poodle bamboo main
> > +test_wt_add_excl -b poodle --detach bamboo main
> > +test_wt_add_excl -B poodle --detach bamboo main
>
> ... the distinction does not matter, but
>
>     helper --lock --reason "my reason with multiple words" bamboo main
>
> must be written with "$@", like so:
>
>     helper () {
> 	git worktree add "$@"
>     }
>
> not
>
>     helper () { # BAD
> 	local opt="$@"
> 	git worktree add $opt
>     }
>
> $opt in this case is a SP-concatenated string
>
> 	opt="--lock --reason my reason with multiple words bamboo main"
>
> and passing it without quotes around it to "git worktree add"
> will give only "my" as the parameter to the option "--reason",
> with three extra words on the comand line.

This makes sense. I'm not the best with shell scripting so I appreciate
the explanation.


  reply	other threads:[~2022-12-20 23:29 UTC|newest]

Thread overview: 129+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-04  1:02 [PATCH 0/4] worktree: Support `--orphan` when creating new worktrees Jacob Abel
2022-11-04  1:03 ` [PATCH 1/4] worktree add: Include -B in usage docs Jacob Abel
2022-11-04  3:05   ` Eric Sunshine
2022-11-04  4:24     ` Jacob Abel
2022-11-04  1:03 ` [PATCH 2/4] builtin/worktree.c: Update checkout_worktree() to use git-worktree Jacob Abel
2022-11-04  1:32   ` Ævar Arnfjörð Bjarmason
2022-11-04  3:58     ` Jacob Abel
2022-11-04 20:45     ` Taylor Blau
2022-11-04  1:03 ` [PATCH 3/4] worktree add: add --orphan flag Jacob Abel
2022-11-04  1:33   ` Ævar Arnfjörð Bjarmason
2022-11-04  4:11     ` Jacob Abel
2022-11-04  5:03   ` Eric Sunshine
2022-11-04 16:41     ` Jacob Abel
2022-11-10  4:13       ` Eric Sunshine
2022-11-10 21:21         ` Jacob Abel
2022-11-04  1:03 ` [PATCH 4/4] worktree add: Add unit tests for --orphan Jacob Abel
2022-11-04  1:37   ` Ævar Arnfjörð Bjarmason
2022-11-04  4:17     ` Jacob Abel
2022-11-04  4:33 ` [PATCH 0/4] worktree: Support `--orphan` when creating new worktrees Eric Sunshine
2022-11-04  4:47   ` Jacob Abel
2022-11-04  4:50   ` Jacob Abel
2022-11-04 21:34 ` [PATCH v2 0/2] " Jacob Abel
2022-11-04 21:34   ` [PATCH v2 1/2] worktree add: Include -B in usage docs Jacob Abel
2022-11-04 21:34   ` [PATCH v2 2/2] worktree add: add --orphan flag Jacob Abel
2022-11-10 23:32   ` [PATCH v3 0/2] worktree: Support `--orphan` when creating new worktrees Jacob Abel
2022-11-10 23:32     ` [PATCH v3 1/2] worktree add: Include -B in usage docs Jacob Abel
2022-11-10 23:32     ` [PATCH v3 2/2] worktree add: add --orphan flag Jacob Abel
2022-11-15 21:08       ` Ævar Arnfjörð Bjarmason
2022-11-15 21:29         ` Eric Sunshine
2022-11-15 22:35           ` Ævar Arnfjörð Bjarmason
2022-11-16  0:19             ` Eric Sunshine
2022-11-19  3:13               ` Jacob Abel
2022-11-19  3:09             ` Jacob Abel
2022-11-19 11:50               ` Ævar Arnfjörð Bjarmason
2022-11-19  1:44         ` Jacob Abel
2022-11-22  6:00           ` Eric Sunshine
2022-11-22 23:09             ` Jacob Abel
2022-11-15 22:09       ` Ævar Arnfjörð Bjarmason
2022-11-19  2:57         ` Jacob Abel
2022-11-19 11:50           ` Ævar Arnfjörð Bjarmason
2022-11-16  0:39     ` [PATCH v3 0/2] worktree: Support `--orphan` when creating new worktrees Eric Sunshine
2022-11-17 10:00       ` Ævar Arnfjörð Bjarmason
2022-11-19  3:47         ` Jacob Abel
2022-11-19 11:48           ` Ævar Arnfjörð Bjarmason
2022-11-22  5:16             ` Eric Sunshine
2022-11-22 23:26               ` Jacob Abel
2022-11-22 23:55                 ` Ævar Arnfjörð Bjarmason
2022-11-23  2:47                   ` Jacob Abel
2022-11-23  2:43                 ` Rubén Justo
2022-11-23  5:37                   ` Jacob Abel
2022-11-23  7:35                     ` Rubén Justo
2022-11-22 14:45           ` Phillip Wood
2022-11-23  4:21             ` Jacob Abel
2022-12-12  1:42     ` [PATCH v4 0/3] " Jacob Abel
2022-12-12  1:42       ` [PATCH v4 1/3] worktree add: Include -B in usage docs Jacob Abel
2022-12-12  1:42       ` [PATCH v4 2/3] worktree add: add --orphan flag Jacob Abel
2022-12-12  8:11         ` Ævar Arnfjörð Bjarmason
2022-12-12 14:55           ` Jacob Abel
2022-12-12 18:14             ` Ævar Arnfjörð Bjarmason
2022-12-12 22:39               ` Jacob Abel
2022-12-12  1:43       ` [PATCH v4 3/3] worktree add: Add hint to use --orphan when bad ref Jacob Abel
2022-12-12  8:35         ` Ævar Arnfjörð Bjarmason
2022-12-12 14:59           ` Jacob Abel
2022-12-12 18:16             ` Ævar Arnfjörð Bjarmason
2022-12-12 18:35               ` Eric Sunshine
2022-12-12 22:36                 ` Jacob Abel
2022-12-12 22:38               ` Jacob Abel
2022-12-20  2:37       ` [PATCH v5 0/4] worktree: Support `--orphan` when creating new worktrees Jacob Abel
2022-12-20  2:37         ` [PATCH v5 1/4] worktree add: Include -B in usage docs Jacob Abel
2022-12-20  3:42           ` Junio C Hamano
2022-12-20 23:24             ` Jacob Abel
2022-12-20  2:37         ` [PATCH v5 2/4] worktree add: refactor opt exclusion tests Jacob Abel
2022-12-20  4:00           ` Junio C Hamano
2022-12-20 23:29             ` Jacob Abel [this message]
2022-12-20  2:38         ` [PATCH v5 3/4] worktree add: add --orphan flag Jacob Abel
2022-12-20  4:19           ` Junio C Hamano
2022-12-21  0:17             ` Jacob Abel
2022-12-20  2:38         ` [PATCH v5 4/4] worktree add: Add hint to use --orphan when bad ref Jacob Abel
2022-12-20  6:18           ` Junio C Hamano
2022-12-21  0:42             ` Jacob Abel
2022-12-28  6:16         ` [PATCH v6 0/4] worktree: Support `--orphan` when creating new worktrees Jacob Abel
2022-12-28  6:16           ` [PATCH v6 1/4] worktree add: include -B in usage docs Jacob Abel
2022-12-28  6:16           ` [PATCH v6 2/4] worktree add: refactor opt exclusion tests Jacob Abel
2022-12-28 12:54             ` Junio C Hamano
2022-12-29  6:51               ` Jacob Abel
2022-12-29 10:07                 ` Junio C Hamano
2022-12-29 20:48                   ` Jacob Abel
2023-01-06  6:31                   ` Jacob Abel
2023-01-06 12:34                     ` Junio C Hamano
2023-01-07  4:45                       ` Jacob Abel
2022-12-28  6:17           ` [PATCH v6 3/4] worktree add: add --orphan flag Jacob Abel
2022-12-28  6:17           ` [PATCH v6 4/4] worktree add: add hint to direct users towards --orphan Jacob Abel
2023-01-06 14:19             ` Phillip Wood
2022-12-28  8:01           ` [PATCH v6 0/4] worktree: Support `--orphan` when creating new worktrees Ævar Arnfjörð Bjarmason
2022-12-29  6:38             ` Jacob Abel
2022-12-29 10:42               ` Ævar Arnfjörð Bjarmason
2022-12-29 21:22                 ` Jacob Abel
2023-01-07  4:58           ` [PATCH v7 " Jacob Abel
2023-01-07  4:59             ` [PATCH v7 1/4] worktree add: include -B in usage docs Jacob Abel
2023-01-07  4:59             ` [PATCH v7 2/4] worktree add: refactor opt exclusion tests Jacob Abel
2023-01-08  7:13               ` Junio C Hamano
2023-01-08 15:08                 ` Jacob Abel
2023-01-07  4:59             ` [PATCH v7 3/4] worktree add: add --orphan flag Jacob Abel
2023-01-07  4:59             ` [PATCH v7 4/4] worktree add: add hint to direct users towards --orphan Jacob Abel
2023-01-09 12:26             ` [PATCH v7 0/4] worktree: Support `--orphan` when creating new worktrees Ævar Arnfjörð Bjarmason
2023-01-09 17:11               ` Jacob Abel
2023-01-09 17:21                 ` Ævar Arnfjörð Bjarmason
2023-01-09 17:26                   ` Jacob Abel
2023-01-09 17:32             ` [PATCH v8 " Jacob Abel
2023-01-09 17:32               ` [PATCH v8 1/4] worktree add: include -B in usage docs Jacob Abel
2023-01-09 17:33               ` [PATCH v8 2/4] worktree add: refactor opt exclusion tests Jacob Abel
2023-01-09 17:33               ` [PATCH v8 3/4] worktree add: add --orphan flag Jacob Abel
2023-01-13 10:20                 ` Phillip Wood
2023-01-13 17:32                   ` Junio C Hamano
2023-01-14 22:47                   ` Jacob Abel
2023-01-15  3:09                     ` Junio C Hamano
2023-01-15  3:41                       ` rsbecker
2023-01-15  3:49                         ` Junio C Hamano
2023-01-18 22:46                           ` 'Jacob Abel'
2023-01-18 22:18                       ` Jacob Abel
2023-01-19 15:32                         ` Ævar Arnfjörð Bjarmason
2023-01-19 16:32                           ` Junio C Hamano
2023-01-16 10:47                     ` Phillip Wood
2023-01-18 22:40                       ` Jacob Abel
2023-01-19 16:18                         ` Phillip Wood
2023-01-19 22:20                           ` Jacob Abel
2023-01-09 17:33               ` [PATCH v8 4/4] worktree add: add hint to direct users towards --orphan Jacob Abel
2023-01-09 19:20               ` [PATCH v8 0/4] worktree: Support `--orphan` when creating new worktrees Ævar Arnfjörð Bjarmason
2023-01-13 17:34                 ` Junio C Hamano

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