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From: Jeff King <peff@peff.net>
To: Brandon Williams <bmwill@google.com>
Cc: Duy Nguyen <pclouds@gmail.com>,
	Ævar Arnfjörð Bjarmason <avarab@gmail.com>,
	"brian m. carlson" <sandals@crustytoothpaste.net>,
	Matthieu Moy <Matthieu.Moy@grenoble-inp.fr>,
	Git Mailing List <git@vger.kernel.org>
Subject: Re: Add configuration options for some commonly used command-line options
Date: Mon, 20 Mar 2017 14:18:01 -0400
Message-ID: <20170320181801.fubiyufrsyenru4b@sigill.intra.peff.net> (raw)
In-Reply-To: <20170320173237.GA188475@google.com>

On Mon, Mar 20, 2017 at 10:32:37AM -0700, Brandon Williams wrote:

> > > IIRC the consensus was that such a facility would allow commands or
> > > individual options to say "this command/option is configurable", thus
> > > of course all plumbing utilities would be unconfigurable, but
> > > porcelain scripts would be configurable by default, with some
> > > exceptions.
> > 
> > This is exactly it! It's much better than adding individual config
> > variables (less work for sure, but messier). Maybe we should promote
> > the microproject "Add configuration options for commonly used cmdline
> > options" to project. If it's too short (I'm guessing the core code
> > could be done in a month), the gsoc student can always convert more
> > config to the new way.
> 
> If in the future we did want better support for making user defaults
> (apart from aliases) for commands we could entertain creating a command
> like bash's 'command' which ignores any user defaults and executes a
> particular command in a vanilla mode.
> 
> So if the user configured 'git am' to always use the -3 option then
> running `git command am` (or something akin to that) would just run the
> vanilla 'am' command with no options.  Probably not the best idea since
> tooling would need to become aware of such a paradigm change, but its
> just a thought.

I think we've had similar proposals in the form of an environment
variable like "GIT_PLUMBING" (and your "command", which I do like
syntactically, would probably just end up setting such an environment
variable anyway).

But yeah, the sticking point is that we'd have to wait for scripts to
adopt it. Manually marking options as "safe" is tedious, but gives more
control.

If we want to follow the GIT_PLUMBING route, I think the first step
would be to introduce it now as a noop (or even a mostly-noop that just
turns off eve the "safe" options). And then we wait for N time units so
that scripts can start using it, and only then start introducing the
breaking changes.

-Peff

  reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-19  9:57 Add configuration options for some commonly used command-line options (Was: [RFH] GSoC 2015 application) Duy Nguyen
2017-03-19 10:15 ` Add configuration options for some commonly used command-line options Matthieu Moy
2017-03-19 13:18   ` brian m. carlson
2017-03-19 13:43     ` Ævar Arnfjörð Bjarmason
2017-03-20 10:56       ` Duy Nguyen
2017-03-20 17:32         ` Brandon Williams
2017-03-20 18:18           ` Jeff King [this message]
2017-03-31 19:44             ` Brandon McCaig
2017-03-20 18:56           ` Junio C Hamano
2017-03-20 19:14             ` Jeff King
2017-03-20 21:57             ` Ævar Arnfjörð Bjarmason
2017-03-24 23:10       ` [PATCH/RFC] parse-options: add facility to make options configurable Ævar Arnfjörð Bjarmason
2017-03-25 16:47         ` Ævar Arnfjörð Bjarmason
2017-03-25 21:31           ` Jeff King
2017-03-25 22:32             ` Ævar Arnfjörð Bjarmason
2017-03-28  5:17               ` Jeff King
2017-03-28 13:13                 ` [PATCH/RFC v2] WIP configurable options facility Ævar Arnfjörð Bjarmason
2017-03-25 21:28         ` [PATCH/RFC] parse-options: add facility to make options configurable brian m. carlson
2017-03-20 10:42     ` Add configuration options for some commonly used command-line options Duy Nguyen

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