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From: Junio C Hamano <gitster@pobox•com>
To: Jeff King <peff@peff•net>
Cc: Mathew George <mathewegeorge@gmail•com>,  git@vger•kernel.org
Subject: Re: Cannot override `remote.origin.url` with `-c` option
Date: Tue, 11 Jun 2024 08:28:41 -0700	[thread overview]
Message-ID: <xmqq34pjxzva.fsf@gitster.g> (raw)
In-Reply-To: <20240611075137.GF3248245@coredump.intra.peff.net> (Jeff King's message of "Tue, 11 Jun 2024 03:51:37 -0400")

Jeff King <peff@peff•net> writes:

> Of course that leaves two questions:
>
>   1. What are multiple URLs actually good for? I have no idea. I

It came from days back when there weren't a separate push URL IIRC.
You may pull from a central place like everybody else, but you may
have other publishing points of your work.

Place to fetch must be a single known stable place for obvious
reasons.  "I have N, so I'll pull from one chosen at random among
these N" would lead to madness ;-).

>   2. Is there a way to override the list?
>
>      Sadly, no. For some config keys, we allow a value-less boolean
>      entry to reset the list.

Hmph, I somehow thought that a more widely used "clear" was an empty
string, but if we can make the convention around the "I exist and I
mean true" entries, that would be great.  It would not make much
sense to have multi-valued Boolean variable to begin with.

> Of course none of that helps your immediate case. I did think of one
> workaround, though, which is to use the "insteadOf" config to rewrite
> the URL. So:
>
>   git -c url.right-url.insteadOf=wrong-url ...
>
> will rewrite all instances of "wrong-url" to use "right-url" instead (in
> origin and elsewhere).

Yup, that is an excellent idea.

> diff --git a/remote.c b/remote.c
> index dcb5492c85..69b0f28637 100644
> --- a/remote.c
> +++ b/remote.c
> @@ -63,6 +63,10 @@ static const char *alias_url(const char *url, struct rewrites *r)
>  
>  static void add_url(struct remote *remote, const char *url)
>  {
> +	if (!url) {
> +		remote->url_nr = 0;
> +		return;
> +	}
>  	ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc);
>  	remote->url[remote->url_nr++] = url;
>  }
> @@ -430,10 +434,7 @@ static int handle_config(const char *key, const char *value,
>  	else if (!strcmp(subkey, "prunetags"))
>  		remote->prune_tags = git_config_bool(key, value);
>  	else if (!strcmp(subkey, "url")) {
> -		char *v;
> -		if (git_config_string(&v, key, value))
> -			return -1;
> -		add_url(remote, v);
> +		add_url(remote, xstrdup_or_null(value));
>  	} else if (!strcmp(subkey, "pushurl")) {
>  		char *v;
>  		if (git_config_string(&v, key, value))

I was expecting (with excitement) a mess, but the above is as clean
as we can make the idea, I would say.  Lack of documentation and
tests do count as incompleteness though of course.


  reply	other threads:[~2024-06-11 15:28 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-06-09  6:51 Cannot override `remote.origin.url` with `-c` option Mathew George
2024-06-11  7:51 ` Jeff King
2024-06-11 15:28   ` Junio C Hamano [this message]
2024-06-13 10:24     ` Jeff King
2024-06-14 10:24       ` [PATCH 0/11] allow overriding remote.*.url Jeff King
2024-06-14 10:25         ` [PATCH 01/11] archive: fix check for missing url Jeff King
2024-06-14 10:26         ` [PATCH 02/11] remote: refactor alias_url() memory ownership Jeff King
2024-06-14 17:05           ` Junio C Hamano
2024-06-14 10:27         ` [PATCH 03/11] remote: transfer ownership of memory in add_url(), etc Jeff King
2024-06-14 17:04           ` Junio C Hamano
2024-06-16  4:59             ` Jeff King
2024-06-17 17:42               ` Junio C Hamano
2024-06-25 17:30           ` Elijah Newren
2024-06-14 10:28         ` [PATCH 04/11] remote: use strvecs to store remote url/pushurl Jeff King
2024-06-25 17:32           ` Elijah Newren
2024-06-14 10:29         ` [PATCH 05/11] remote: simplify url/pushurl selection Jeff King
2024-06-25 17:33           ` Elijah Newren
2024-06-14 10:30         ` [PATCH 06/11] config: document remote.*.url/pushurl interaction Jeff King
2024-06-25 17:34           ` Elijah Newren
2024-06-14 10:31         ` [PATCH 07/11] remote: allow resetting url list Jeff King
2024-06-25 17:35           ` Elijah Newren
2024-06-14 10:31         ` [PATCH 08/11] t5801: make remote-testgit GIT_DIR setup more robust Jeff King
2024-06-25 17:36           ` Elijah Newren
2024-06-14 10:34         ` [PATCH 09/11] t5801: test remote.*.vcs config Jeff King
2024-06-14 10:37         ` [PATCH 10/11] remote: always require at least one url in a remote Jeff King
2024-06-14 10:42         ` [PATCH 11/11] remote: drop checks for zero-url case Jeff King
2024-06-25 17:37           ` Elijah Newren
2024-06-25 17:44         ` [PATCH 0/11] allow overriding remote.*.url Elijah Newren
2024-06-26 20:40           ` Jeff King

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