Aaron Schrab <aa...@schrab.com> writes:

> At 16:48 -0700 07 Apr 2013, Jonathan Nieder <jrnie...@gmail.com> wrote:
>>> Do not report an argument to clone's --reference option is not a local
>>> directory.  Nothing checks for the actual directory so we have no way to
>>> know if whether or not exists.  Telling the user that a directory doesn't
>>> exist when that isn't actually known may lead him or her on the wrong
>>> path to finding the problem.
>>I don't understand the above explanation.  Could you give an example?
> I originally noticed this while trying to use a submodule as a
> reference repository.

I do agree that it would be nice to dereference .git gitfile when we
deal with --reference argument, but you do not want to use in-tree
repository of a submodule working tree.  What happens when you have
to check out a version of the containing superproject that did not
have the submodule you are borrowing from?  The directory will
disappear, leaving the borrowing repository still pointing at it
with its .git/objects/info/alternates file, no?
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