The new README you propose does not address the bug at all. All you did was to copy the commandline recipe I used and write a README around it. It also clearly shows that dpkg does not implement what this bug is asking for; a command line recipe that will return a few false positives is not the same as "dpkg already implements this" or as "adding a --find-removed option to deborphan".
-- Martin-Éric Racine http://q-funk.iki.fi
