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From: Sean Barag <sean@barag.org>
To: gitster@pobox.com
Cc: git@vger.kernel.org, gitgitgadget@gmail.com,
	johannes.schindelin@gmx.de, me@ttaylorr.com, peff@peff.net,
	rybak.a.v@gmail.com, sean@barag.org, stolee@gmail.com,
	sunshine@sunshineco.com
Subject: Re: [PATCH] clone: add remote.cloneDefault config option
Date: Tue, 29 Sep 2020 16:47:50 -0700	[thread overview]
Message-ID: <20200929234750.879484-1-sean@barag.org> (raw)
In-Reply-To: <xmqqa6x8icbp.fsf@gitster.c.googlers.com>

"Junio C Hamano" <gitster@pobox.com> writes:

> >  static int git_clone_config(const char *k, const char *v, void *cb)
> >  {
> > +	if (!strcmp(k, "clone.defaultremotename")) {
> > +		if (remote_name != default_remote_name)
> > +			free(remote_name);
> > +		remote_name = xstrdup(v);
> 
> This feels strange.  The usual arrangement is
> 
>     - initialize the variable to NULL (or any value that the code
>       can tell that nobody touched it);
> 
>     - let git_config() callback to update the variable, taking care
>       of freeing and strduping as needed.  Note that free(NULL) is
>       kosher.
> 
>     - let parse_options() to further update the variable, taking
>       care of freeing and strduping as needed.
> 
>     - finally, if the variable is still NULL, give it its default
>       value.
> 
> so there is no room for the "if the variable has the value of the
> fallback default, do things differently" logic to be in the
> git_config() callback function.

I agree, it felt pretty awkward while writing it!  I was hoping to match
the start-up sequence you'd mentioned in my original attempt [1] but I'm
happy to move the default value assignment down.

> > @@ -1153,10 +1154,20 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
> >  
> >  	/*
> >  	 * re-read config after init_db and write_config to pick up any config
> > -	 * injected by --template and --config, respectively
> > +	 * injected by --template and --config, respectively.
> >  	 */
> 
> Squash this "oops, I forgot to finish the sentence" to the step the
> mistake was introduced, i.e. "use more conventional..."

How embarrassing, I thought I'd gotten all of those.  Will do.

Sean

--
[1] Original attempt at this feature, in separate thread because of the
    divergence: https://lore.kernel.org/git/xmqqlfi1utwi.fsf@gitster.c.googlers.com/

  reply	other threads:[~2020-09-29 23:48 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-11 18:25 [PATCH 0/4] clone: allow configurable default for -o/--origin Sean Barag via GitGitGadget
2020-09-11 18:25 ` [PATCH 1/4] clone: add tests for --template and some disallowed option pairs Sean Barag via GitGitGadget
2020-09-11 18:57   ` Derrick Stolee
2020-09-11 19:56     ` Jeff King
2020-09-11 20:07       ` Eric Sunshine
2020-09-16  3:15         ` [PATCH 0/4] clone: allow configurable default for -o/--origin Sean Barag
2020-09-12  3:17       ` [PATCH 1/4] clone: add tests for --template and some disallowed option pairs Taylor Blau
2020-09-15 16:09       ` Sean Barag
2020-09-16 16:36         ` Jeff King
2020-09-11 21:02     ` Junio C Hamano
2020-09-12  0:41       ` Derrick Stolee
2020-09-11 18:25 ` [PATCH 2/4] clone: call git_config before parse_options Sean Barag via GitGitGadget
2020-09-11 18:59   ` Derrick Stolee
2020-09-11 20:26   ` Junio C Hamano
2020-09-16 16:12     ` Sean Barag
2020-09-11 18:25 ` [PATCH 3/4] clone: validate --origin option before use Sean Barag via GitGitGadget
2020-09-11 19:24   ` Derrick Stolee
2020-09-16 16:28     ` Sean Barag
2020-09-11 20:39   ` Junio C Hamano
2020-09-16 17:11     ` Sean Barag
2020-09-21 16:13       ` Sean Barag
2020-09-11 18:25 ` [PATCH 4/4] clone: allow configurable default for `-o`/`--origin` Sean Barag via GitGitGadget
2020-09-11 19:13   ` Derrick Stolee
2020-09-28 16:04     ` Sean Barag
2020-09-11 21:00   ` Junio C Hamano
2020-09-28 16:02     ` Sean Barag
2020-09-17 15:25   ` Andrei Rybak
2020-09-11 19:25 ` [PATCH 0/4] clone: allow configurable default for -o/--origin Derrick Stolee
2020-09-11 19:34 ` Junio C Hamano
2020-09-29  3:36 ` [PATCH v2 0/7] " Sean Barag via GitGitGadget
2020-09-29  3:36   ` [PATCH v2 1/7] clone: add tests for --template and some disallowed option pairs Sean Barag via GitGitGadget
2020-09-29  3:36   ` [PATCH v2 2/7] clone: use more conventional config/option layering Sean Barag via GitGitGadget
2020-09-29  3:36   ` [PATCH v2 3/7] remote: add tests for add and rename with invalid names Sean Barag via GitGitGadget
2020-09-29  3:36   ` [PATCH v2 4/7] refs: consolidate remote name validation Sean Barag via GitGitGadget
2020-09-29  3:36   ` [PATCH v2 5/7] clone: validate --origin option before use Sean Barag via GitGitGadget
2020-09-29  3:36   ` [PATCH v2 6/7] clone: read new remote name from remote_name instead of option_origin Sean Barag via GitGitGadget
2020-09-29  3:36   ` [PATCH v2 7/7] clone: allow configurable default for `-o`/`--origin` Sean Barag via GitGitGadget
2020-09-29 19:59     ` Junio C Hamano
2020-09-29 23:47       ` Sean Barag [this message]
2020-09-29  3:44   ` [PATCH v2 0/7] clone: allow configurable default for -o/--origin Sean Barag
2020-10-01  3:46   ` [PATCH v3 " Sean Barag via GitGitGadget
2020-10-01  3:46     ` [PATCH v3 1/7] clone: add tests for --template and some disallowed option pairs Sean Barag via GitGitGadget
2020-10-01  3:46     ` [PATCH v3 2/7] clone: use more conventional config/option layering Sean Barag via GitGitGadget
2020-10-01  3:46     ` [PATCH v3 3/7] remote: add tests for add and rename with invalid names Sean Barag via GitGitGadget
2020-10-01  3:46     ` [PATCH v3 4/7] refs: consolidate remote name validation Sean Barag via GitGitGadget
2020-10-01  3:46     ` [PATCH v3 5/7] clone: validate --origin option before use Sean Barag via GitGitGadget
2020-10-01  3:46     ` [PATCH v3 6/7] clone: read new remote name from remote_name instead of option_origin Sean Barag via GitGitGadget
2020-10-01  3:46     ` [PATCH v3 7/7] clone: allow configurable default for `-o`/`--origin` Sean Barag via GitGitGadget
2020-10-02 12:56     ` [PATCH v3 0/7] clone: allow configurable default for -o/--origin Derrick Stolee
  -- strict thread matches above, loose matches on Subject: below --
2020-08-26 15:45 [PATCH] clone: add remote.cloneDefault config option Sean Barag via GitGitGadget
2020-08-26 18:46 ` Junio C Hamano
2020-08-26 19:04   ` Derrick Stolee
2020-08-26 19:59     ` Junio C Hamano
2020-08-27  3:38       ` Sean Barag
2020-08-27  4:21         ` Junio C Hamano
2020-08-27 14:00           ` Sean Barag

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