From: Jonathan Nieder <jrnieder@gmail.com>
Date: Wed, 06 Aug 2014 23:51:52 GMT
Subject: Re: Subtree with submodule inside?
Message-ID: <20140806235152.GB12427@google.com>
In-Reply-To: <xmqqr40tkxcp.fsf@gitster.dls.corp.google.com>

Junio C Hamano wrote:
> Jonathan Nieder <jrnieder@gmail.com> writes:

>>  2. Submodules aware of their superproject and of the parent's branches.
>>     In other words, submodules would act as though under refs/ they
>>     had a symlink
>>
>> 	parent -> ../../../refs
>>
>>     So you could do
>>
>> 	git checkout --recurse-submodules master
>>
>> 	cd path/to/submodule
>> 	git checkout parent/heads/next
>>
>>     This would avoid danger from "git gc" in submodules and would
>>     get rid of most of the motivation for named branches in the
>>     submodule, I'd think.
>
> Are you assuming that they share their object stores?

No.  The 'symlink' thing is a think-o.  (When trying to explain the
idea I ended up oversimplifying and speaking nonsense.)

What I wanted to say is that parent/heads/next would be a way to
refer from the submodule to the same commit as

	refs/heads/next:path/to/submodule

refers to in the parent.

Thanks for clarifying,
Jonathan