Date:        Thu, 17 Sep 1998 09:20:58 -0400 (EDT)
    From:        Todd Vierling <tv@pobox.com>
    Message-ID:  <Pine.NEB.4.02.9809170919470.25671-100000@duhnet.net>

    Because the set-id and sticky bits may, in the future, have meaning,

If they do, the write bits probably need to have meaning too (assuming any
of the rumoured possible meanings for the others is what happens).  Most
sensibly, the write bits of all symlinks traversed while searching a path
should be anded with the write bits of the final object to determine
write permission (so any symlink that forbids writes actually does that).

kre