Several resources suggest that NUL is a reserved file name, not NIL. I don't have a windows at hand to test it, but I'd guess it's actually NUL that is equivalent to UNIX' /dev/null.
Perl 6 - the future is here, just unevenly distributed

In reply to Re^2: Usage of File::Spec->devnull() on Windows by moritz
in thread Usage of File::Spec->devnull() on Windows by chazubell

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