Re: On --depth=funny value

> Duy Nguyen <pclouds@gmail.com> writes:
>
>> On Wed, Jan 9, 2013 at 9:53 AM, Junio C Hamano <gitster@pobox.com> wrote:
>> ...
>>>  * We would like to update "clone --depth=1" to end up with a tip
>>>    only repository, but let's not to touch "git fetch" (and "git
>>>    clone") and make them send 0 over the wire when the command line
>>>    tells them to use "--depth=1" (i.e. let's not do the "off-by-one"
>>>    thing).
>>
>> You can't anyway. Depth 0 on the wire is considered invalid by upload-pack.
>
> Yes, that is a good point that we say "if (0 < opt->depth) do the
> shallow thing" everywhere, so 0 is spcial in that sense.
>
> Which suggests that if we wanted to, we could update the fetch side
> to do the off-by-one thing against the current upload-pack when the
> given depth is two or more, and still send 1 when depth=1.  When
> talking with an updated upload-pack that advertises exact-shallow
> protocol extension, it can disable that off-by-one for all values of
> depth.  That way, the updated client gets history of wrong depth
> only for --depth=1 when talking with the current upload-pack; all
> other cases, it will get history of correct depth.
>
> Hmm?