Re: [PATCH v2 1/6] submodules: add helper functions to determine presence of submodules

> On Tue, Nov 1, 2016 at 10:20 AM, Junio C Hamano <gitster@pobox.com> wrote:
>
>>
>> Maybe I am old fashioned, but I'd feel better to see these with
>> explicit "extern" in front (check the older header files like
>> cache.h when you are in doubt what the project convention has been).
>
> I did check the other files and saw them, so I was very unsure what to
> suggest here. I only saw the extern keyword used in headers that were
> there when Git was really young, so I assumed it's a style nit by kernel
> developers. Thanks for clarifying!
>
> I think we'll want to have some consistency though, so we
> maybe want to coordinate a cleanup of submodule.h as well as
> submodule-config.h to mark all the functions extern.
>
> This doesn't need to be a all-at-once thing, but we'd keep it in mind
> for future declarations in the header.
>
> Thanks,
> Stefan