Re: [PATCHv9 4/6] git submodule update: have a dedicated helper for cloning

> On Tue, Feb 9, 2016 at 12:54 PM, Stefan Beller <sbeller@google.com> wrote:
>> This introduces a new helper function in git submodule--helper
>> which takes care of cloning all submodules, which we want to
>> parallelize eventually.
>>
>> Some tests (such as empty URL, update_mode=none) are required in the
>> helper to make the decision for cloning. These checks have been
>> moved into the C function as well (no need to repeat them in the
>> shell script).
>>
>> As we can only access the stderr channel from within the parallel
>> processing engine, we need to reroute the error message for
>> specified but initialized submodules to stderr. As it is an error
>> message, this should have gone to stderr in the first place, so it
>> is a bug fix along the way.
>>
>
> I was recently working on a way to make submodule pass some parameters
> from the parent project into the submodule project (specifically
> settings regarding authentication such as using an authentication
> helper), and I think this would make it easier to do.