From: Junio C Hamano <gitster@pobox.com>
Date: Thu, 21 Jul 2011 23:47:41 GMT
Subject: Re: [RFC PATCH] Move git-dir for submodules
Message-ID: <7vmxg7yz4y.fsf@alter.siamese.dyndns.org>
In-Reply-To: <7vr55jyzlb.fsf@alter.siamese.dyndns.org>

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

> Phil Hord <hordp@cisco.com> writes:
>
>> Now that you mention it, what happens if the submodule name changes in
>> the history?  What happens if the submodule URL (and possibly the entire
>> submodule contents) changes in the history?
>
> The original idea (dating back before "git submodule" was written, but
> only when "gitlink" was added to the index and the tree objects) was to
> identify the submodule by name and refer to the same logical entity with
> the same name, so that no matter where in the superproject's working tree
> hierarchy you change your mind to bind a particular submodule (say, "the
> Linux kernel upstream source") at (i.e. "path"), or from which mirror of
> the kernel repository you recommend your downstream to clone it from
> (i.e. "url" in .gitmodules).

Sorry for an incomplete sentence.  "No matter...." above should conclude
with "you know you are talking about the same module that retains the
identity of its .git metadata directory."