git archive and glob pathspecs

Hi,

The `git archive` seems to accept a pathspec judging from the error message (git
version 2.1.0):

    git archive HEAD -- :x
    fatal: pathspec 'x' did not match any files

When I try to use deeper glob specs however, it throws an error (this also
happens if I use `:(glob)**/Makefile`, tested in the git source tree):

    $ git archive HEAD -- ':(glob)*/Makefile'
    fatal: pathspec '*/Makefile' did not match any files

Strange enough, command `git log -- ':(glob)*/Makefile'` works. Any idea what is
wrong?

Kind regards,
Peter
https://lekensteyn.nl