Stefan Beller <sbeller@xxxxxxxxxx> writes:
> When a submodule is initialized, the config variable 'submodule.<name>.url'
> is set depending on the value of the same variable in the .gitmodules
> file. When the URL indicates to be relative, then the url is computed
> relative to its default remote. The default remote cannot be determined
> accurately in all cases, such that it falls back to 'origin'.
>
> The 'origin' remote may not exist, though. In that case we give up looking
> for a suitable remote and we'll just assume it to be a local relative path.
IOW we keep the .url to be relative, the same as the original one we
took from .gitmodules? That sounds like a sensible thing to do and
I agree it makes sense to warn when it happens.
> <repository> is the URL of the new submodule's origin repository.
> This may be either an absolute URL, or (if it begins with ./
> -or ../), the location relative to the superproject's origin
> +or ../), the location relative to the superproject's default remote
> repository (Please note that to specify a repository 'foo.git'
> which is located right next to a superproject 'bar.git', you'll
> have to use '../foo.git' instead of './foo.git' - as one might expect
> when following the rules for relative URLs - because the evaluation
> of relative URLs in Git is identical to that of relative directories).
> -If the superproject doesn't have an origin configured
> ++
> +The default remote is the remote of the remote tracking branch
> +of the current branch. If no such remote tracking branch exists or
> +the HEAD is detached, "origin" is assumed to be the default remote.
> +If the superproject doesn't have a default remote configured
OK.
> @@ -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.
> - 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`.
> - 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.
> + added and committed elsewhere) by copying `submodule.$name.url`
> + from .gitmodules to .git/config, resolving relative urls to be
> + relative to the default remote.
I read this as "copying..., resolving relative to the default remote
(if exists)." A reader would wonder what happens if the default
remote does not exist---don't we want to describe what happens in
that case, like, "recording . (the current repository) as the
upstream" or something?
> ++
> +Optional <path> arguments limit which submodules will be initialized.
> +If no path is specified all submodules are initialized.
Perhaps s/ all submodules/,&/?
> 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..15a5430c00 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)) {
> + warning(_("could not lookup configuration '%s'. Assuming this repository is its own authoritative upstream."), remotesb.buf);
Sounds sensible (it might be a bit too long but it should be OK).
> remoteurl = xgetcwd();
> + }
> relurl = relative_url(remoteurl, url, NULL);
> strbuf_release(&remotesb);
> free(remoteurl);
Thanks.