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Re: [PATCH 2/3] sha1-file: emit error if an alternate looks like a repository

Ævar Arnfjörð Bjarmason  <avarab@xxxxxxxxx> writes:

> Since 26125f6b9b ("detect broken alternates.", 2006-02-22) we've
> emitted an error if the alternates directory doesn't exist, but not
> for the common misstep of adding a path to another git repository as
> an alternate, as opposed to its "objects" directory.
> Let's check for this, i.e. whether X/objects or X/.git/objects exists
> if the user supplies X and print an error (which as a commit leading
> up to this one shows doesn't change the exit code, just "warns").

I agree that "Let's check for this" is a good idea, but do not
necessarily agree with "i.e.".  Don't we have a helper that takes
the path to an existing directory and answers "Yup, it does look
like a Git repository"?  Using that is a lot more in line with what
you claimed to do in the title for this patch.

I haven't read 3/3 yet, but as I said, I suspect it is reasonable to
DWIM and use the object store associated with the directory we found
to be a repository.