Re: [PATCH] submodule init: warn about falling back to a local path

> --- a/Documentation/git-submodule.txt
> +++ b/Documentation/git-submodule.txt
> @@ -73,13 +73,17 @@ configuration entries unless `--name` is used to specify a logical name.
> ...
> +The default remote is the remote of the remote tracking branch
> +of the current branch. If no such remote tracking branch exists or
> +the in detached HEAD mode, "origin" is assumed to be the default remote.

> +If the superproject doesn't have a default remote configured
>  the superproject is its own authoritative upstream and the current
>  working directory is used instead.
>  +
> @@ -118,18 +122,22 @@ too (and can also report changes to a submodule's work tree).
>
>  init [--] [<path>...]::
>  	Initialize the submodules recorded in the index (which were
> -	added and committed elsewhere) by copying submodule
> -	names and urls from .gitmodules to .git/config.
> +	added and committed elsewhere) by copying `submodule.$name.url`
> +	from .gitmodules to .git/config, resolving relative urls to be
> +	relative to the default remote.
> ++
>  	Optional <path> arguments limit which submodules will be initialized.
> -	It will also copy the value of `submodule.$name.update` into
> -	.git/config.
> -	The key used in .git/config is `submodule.$name.url`.
> +	If no path is specified all submodules are initialized.
> ++
> +	When present, it will also copy the value of `submodule.$name.update`.
>  	This command does not alter existing information in .git/config.
>  	You can then customize the submodule clone URLs in .git/config
>  	for your local setup and proceed to `git submodule update`;
>  	you can also just use `git submodule update --init` without
>  	the explicit 'init' step if you do not intend to customize
>  	any submodule locations.
> ++
> +	See the add subcommand for the defintion of default remote.

>
>  deinit [-f|--force] (--all|[--] <path>...)::
>  	Unregister the given submodules, i.e. remove the whole
> diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
> index 899dc334e3..44c11dd91e 100644
> --- a/builtin/submodule--helper.c
> +++ b/builtin/submodule--helper.c
> @@ -356,12 +356,10 @@ static void init_submodule(const char *path, const char *prefix, int quiet)
>  			strbuf_addf(&remotesb, "remote.%s.url", remote);
>  			free(remote);
>
> -			if (git_config_get_string(remotesb.buf, &remoteurl))
> -				/*
> -				 * The repository is its own
> -				 * authoritative upstream
> -				 */
> +			if (git_config_get_string(remotesb.buf, &remoteurl)) {
>  				remoteurl = xgetcwd();
> +				warning(_("could not lookup configuration '%s'. Assuming this repository is its own authoritative upstream."), remotesb.buf);
> +			}