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From: Jeff King <peff@peff.net>
To: Patrick Steinhardt <ps@pks.im>
Cc: git@vger.kernel.org, "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Junio C Hamano" <gitster@pobox.com>,
	"brian m. carlson" <sandals@crustytoothpaste.net>,
	"Philip Oakley" <philipoakley@iee.email>
Subject: Re: [PATCH v4 2/6] config: add new way to pass config via `--config-env`
Date: Fri, 11 Dec 2020 09:20:18 -0500
Message-ID: <X9OAIs6cGdNVt4xV@coredump.intra.peff.net> (raw)
In-Reply-To: <X9NzE5+LNYqG1s+o@ncase>

On Fri, Dec 11, 2020 at 02:24:35PM +0100, Patrick Steinhardt wrote:

> > > +--config-env=<name>=<envvar>::
> > > +	Pass a configuration parameter to the command. The <envvar>
> > > +	given will be replaced with the contents of the environment
> > > +	variable of that name. In contrast to `-c`, an envvar must
> > > +	always be given and exist in the environment. Passing an
> > > +	environment variable with empty value will set <name> to the
> > > +	empty string which `git config --type=bool` will convert to
> > > +	`false`.
> > 
> > I agree with Ævar that we probably should keep an empty variable as the
> > empty string. I think some options use an empty string to clear a list
> > (e.g., push.pushOption), and I'm not sure how they'd react to a bool
> > instead. It would be nice to also have a way to do the implicit-bool
> > thing, but I don't think it's strictly necessary (it's always correct to
> > put the string "true" into the variable instead).
> 
> I think this is just weirdly worded in the `-c` case, which I mostly
> copied. We _do_ keep the empty string, which effectively means that `git
> config --type=bool` will return `false`.

Oh indeed, I misread what you wrote in the documentation. I think it is
doing the right thing, then. IMHO it is not worth even calling out
specially, since there is no matching implicit-bool form. I.e., I'd
probably just cut the final sentence.

> Or do you mean that we should allow `--config-env=foo.bar=`?

Hmm, yeah, that would work as an "implicit bool". But it's sufficiently
ugly and non-intuitive (and weirdly overlapping with "-c") that I'm not
sure it is worth supporting.

-Peff

  reply index

Thread overview: 116+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-24 10:50 [PATCH v2 0/2] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2020-11-24 10:50 ` [PATCH v2 1/2] config: extract function to parse config pairs Patrick Steinhardt
2020-11-24 10:50 ` [PATCH v2 2/2] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2020-11-25  3:39   ` Junio C Hamano
2020-11-25  7:06     ` Patrick Steinhardt
2020-11-25  7:41       ` Junio C Hamano
2020-11-25  7:57         ` Patrick Steinhardt
2020-11-25  8:47   ` Ævar Arnfjörð Bjarmason
2020-11-25  9:00   ` Ævar Arnfjörð Bjarmason
2020-11-25 19:50     ` Junio C Hamano
2020-11-25 10:41 ` [PATCH v2 0/2] " Jeff King
2020-11-25 13:16   ` Patrick Steinhardt
2020-11-26  0:36     ` Jeff King
2020-11-25 20:28   ` Junio C Hamano
2020-11-25 22:47   ` brian m. carlson
2020-11-26  6:31     ` Patrick Steinhardt
2020-12-01  9:47   ` Patrick Steinhardt
2020-12-01 11:30     ` Jeff King
2020-12-01  9:55 ` [PATCH v3 0/4] " Patrick Steinhardt
2020-12-01  9:55   ` [PATCH v3 1/4] environment: make `getenv_safe()` non-static Patrick Steinhardt
2020-12-01  9:56   ` [PATCH v3 2/4] config: extract function to parse config pairs Patrick Steinhardt
2020-12-01  9:56   ` [PATCH v3 3/4] config: refactor parsing of GIT_CONFIG_PARAMETERS Patrick Steinhardt
2020-12-01  9:56   ` [PATCH v3 4/4] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2020-12-09 11:52 ` [PATCH v4 0/6] config: allow specifying config entries via env Patrick Steinhardt
2020-12-09 11:52   ` [PATCH v4 1/6] git: add `--super-prefix` to usage string Patrick Steinhardt
2020-12-09 11:52   ` [PATCH v4 2/6] config: add new way to pass config via `--config-env` Patrick Steinhardt
2020-12-09 14:40     ` Ævar Arnfjörð Bjarmason
2020-12-09 16:24       ` Jeff King
2020-12-11 13:24         ` Patrick Steinhardt
2020-12-11 14:21           ` Jeff King
2020-12-11 14:54             ` Patrick Steinhardt
2020-12-11 16:10               ` Jeff King
2020-12-09 16:10     ` Jeff King
2020-12-09 16:12       ` [PATCH 1/3] quote: make sq_dequote_step() a public function Jeff King
2020-12-09 16:17       ` [PATCH 2/3] config: parse more robust format in GIT_CONFIG_PARAMETERS Jeff King
2020-12-09 16:20       ` [PATCH 3/3] config: store "git -c" variables using more robust format Jeff King
2020-12-09 16:34         ` Jeff King
2020-12-10 20:55         ` Ævar Arnfjörð Bjarmason
2020-12-10 21:49           ` Junio C Hamano
2020-12-11 13:21           ` Jeff King
2020-12-10  0:00       ` [PATCH v4 2/6] config: add new way to pass config via `--config-env` Junio C Hamano
2020-12-10  0:09         ` Jeff King
2020-12-10  0:57           ` Junio C Hamano
2020-12-11 13:24       ` Patrick Steinhardt
2020-12-11 14:20         ` Jeff King [this message]
2020-12-09 11:52   ` [PATCH v4 3/6] environment: make `getenv_safe()` non-static Patrick Steinhardt
2020-12-09 11:52   ` [PATCH v4 4/6] config: extract function to parse config pairs Patrick Steinhardt
2020-12-09 13:12     ` Ævar Arnfjörð Bjarmason
2020-12-09 11:52   ` [PATCH v4 5/6] config: refactor parsing of GIT_CONFIG_PARAMETERS Patrick Steinhardt
2020-12-09 11:52   ` [PATCH v4 6/6] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2020-12-09 15:29   ` [PATCH v4 0/6] config: allow specifying config entries via env Ævar Arnfjörð Bjarmason
2020-12-11 13:35     ` Patrick Steinhardt
2020-12-11 14:27       ` Jeff King
2020-12-11 14:42         ` Jeff King
2020-12-11 14:58           ` Patrick Steinhardt
2020-12-11 14:47         ` Patrick Steinhardt
2020-12-11 15:21           ` Ævar Arnfjörð Bjarmason
2020-12-11 16:02           ` Jeff King
2020-12-16  7:52 ` [PATCH v5 0/8] " Patrick Steinhardt
2020-12-16  7:52   ` [PATCH v5 1/8] git: add `--super-prefix` to usage string Patrick Steinhardt
2020-12-16  7:52   ` [PATCH v5 2/8] config: add new way to pass config via `--config-env` Patrick Steinhardt
2020-12-23 21:35     ` Junio C Hamano
2020-12-16  7:54   ` [PATCH v5 4/8] config: extract function to parse config pairs Patrick Steinhardt
2020-12-16  7:54   ` [PATCH v5 7/8] environment: make `getenv_safe()` a public function Patrick Steinhardt
2020-12-16  7:54   ` [PATCH v5 8/8] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2020-12-23 21:14     ` Junio C Hamano
2020-12-23 21:55       ` Junio C Hamano
2021-01-06 10:28         ` Patrick Steinhardt
2021-01-06 21:07           ` Junio C Hamano
2020-12-16  7:56   ` [PATCH v5 3/8] quote: make sq_dequote_step() a public function Patrick Steinhardt
2020-12-16  7:56   ` [PATCH v5 5/8] config: store "git -c" variables using more robust format Patrick Steinhardt
2020-12-16  7:57   ` [PATCH v5 6/8] config: parse more robust format in GIT_CONFIG_PARAMETERS Patrick Steinhardt
2020-12-16 20:01     ` Phillip Wood
2021-01-07  6:36 ` [PATCH v6 0/8] config: allow specifying config entries via env Patrick Steinhardt
2021-01-07  6:36   ` [PATCH v6 1/8] git: add `--super-prefix` to usage string Patrick Steinhardt
2021-01-07  6:36   ` [PATCH v6 2/8] config: add new way to pass config via `--config-env` Patrick Steinhardt
2021-01-10 20:29     ` Simon Ruderich
2021-01-11  0:29       ` Junio C Hamano
2021-01-11  8:24         ` Patrick Steinhardt
2021-01-07  6:36   ` [PATCH v6 3/8] quote: make sq_dequote_step() a public function Patrick Steinhardt
2021-01-07  6:37   ` [PATCH v6 4/8] config: extract function to parse config pairs Patrick Steinhardt
2021-01-07  6:37   ` [PATCH v6 5/8] config: store "git -c" variables using more robust format Patrick Steinhardt
2021-01-07  6:37   ` [PATCH v6 6/8] config: parse more robust format in GIT_CONFIG_PARAMETERS Patrick Steinhardt
2021-01-07  6:37   ` [PATCH v6 7/8] environment: make `getenv_safe()` a public function Patrick Steinhardt
2021-01-07  6:37   ` [PATCH v6 8/8] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2021-01-11  8:36 ` [PATCH v7 0/8] " Patrick Steinhardt
2021-01-11  8:36   ` [PATCH v7 1/8] git: add `--super-prefix` to usage string Patrick Steinhardt
2021-01-11  8:36   ` [PATCH v7 2/8] config: add new way to pass config via `--config-env` Patrick Steinhardt
2021-01-11 22:34     ` Junio C Hamano
2021-01-11  8:36   ` [PATCH v7 3/8] quote: make sq_dequote_step() a public function Patrick Steinhardt
2021-01-11  8:36   ` [PATCH v7 4/8] config: extract function to parse config pairs Patrick Steinhardt
2021-01-11  8:37   ` [PATCH v7 5/8] config: store "git -c" variables using more robust format Patrick Steinhardt
2021-01-11  8:37   ` [PATCH v7 6/8] config: parse more robust format in GIT_CONFIG_PARAMETERS Patrick Steinhardt
2021-01-11  8:37   ` [PATCH v7 7/8] environment: make `getenv_safe()` a public function Patrick Steinhardt
2021-01-11  8:37   ` [PATCH v7 8/8] config: allow specifying config entries via envvar pairs Patrick Steinhardt
2021-01-12 12:26 ` [PATCH v8 0/8] " Patrick Steinhardt
2021-01-12 12:26   ` [PATCH v8 1/8] git: add `--super-prefix` to usage string Patrick Steinhardt
2021-01-12 12:26   ` [PATCH v8 2/8] config: add new way to pass config via `--config-env` Patrick Steinhardt
2021-04-16 15:40     ` Ævar Arnfjörð Bjarmason
2021-04-17  8:38       ` Jeff King
2021-04-19 15:28         ` Patrick Steinhardt
2021-04-20 11:01           ` Ævar Arnfjörð Bjarmason
2021-04-20 10:59         ` Ævar Arnfjörð Bjarmason
2021-04-23 10:05           ` Jeff King
2021-05-19 11:36             ` Ævar Arnfjörð Bjarmason
2021-01-12 12:26   ` [PATCH v8 3/8] quote: make sq_dequote_step() a public function Patrick Steinhardt
2021-01-12 12:26   ` [PATCH v8 4/8] config: extract function to parse config pairs Patrick Steinhardt
2021-01-12 12:27   ` [PATCH v8 5/8] config: store "git -c" variables using more robust format Patrick Steinhardt
2021-01-15 19:16     ` Jeff King
2021-01-20  6:29       ` Patrick Steinhardt
2021-01-20  6:55         ` Junio C Hamano
2021-01-20  7:42           ` Patrick Steinhardt
2021-01-20 22:28             ` Junio C Hamano
2021-01-12 12:27   ` [PATCH v8 6/8] config: parse more robust format in GIT_CONFIG_PARAMETERS Patrick Steinhardt
2021-01-12 12:27   ` [PATCH v8 7/8] environment: make `getenv_safe()` a public function Patrick Steinhardt
2021-01-12 12:27   ` [PATCH v8 8/8] config: allow specifying config entries via envvar pairs Patrick Steinhardt

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