5.93 tail -N foo bar invalid option

[Karl Berry]

In coreutils 5.93, with _POSIX2_VERSION=0 (and POSIXLY_CORRECT unset), 
  touch foo bar
  tail -3 foo bar
yields the error
  tail: invalid option -- 3

Both `tail -3 foo' and `head -3 foo bar' are ok.

Thanks,
k