Argh.  crow must taste really bad...
I've been typing env -u --, when I meant env -i --.
There is no arch-dependent problem with tail after all:

  $ env -i -- /usr/bin/tail -c 3 < /dev/null
  /usr/bin/tail: cannot open `3' for reading: No such file or directory

Jim Meyering <[EMAIL PROTECTED]> wrote:
> Michael Stone <[EMAIL PROTECTED]> wrote:
> ...
>> Using the debian binaries? It should be set unconditionally, regardless
>> of architecture. I guess I'll have to try it on an amd64 next week.
>
> Yes, as I said earlier on this thread:
>
>     $ env -u -- /usr/bin/tail -c 3 < /dev/null
>     $ dpkg -s coreutils | grep Version
>     Version: 5.94-1
>     $ env -- _POSIX2_VERSION=0 /usr/bin/tail -c 3 < /dev/null
>     /usr/bin/tail: cannot open `3' for reading: No such file or directory
>     [Exit 1]
>
> $ uname -a
> Linux rho 2.6.15-1-amd64-k8 #2 Sat Feb 4 00:09:56 UTC 2006 x86_64 GNU/Linux
>
> Vincent just said it also affects powerpc binaries.


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