`untaint'
       If find is used in taint-mode (-T command line switch or if EUID !=
       UID or if EGID != GID) then internally directory names have to be
       untainted before they can be cd'ed to. Therefore they are checked
       against a regular expression *untaint_pattern*. Note, that all names
       passed to the user's *wanted()* function are still tainted.

    `untaint_pattern'
       See above. This should be set using the `qr' quoting operator. The
       default is set to `qr|^([-+@\w./]+)$|'. Note that the paranthesis
       which are vital.

    `untaint_skip'
       If set, directories (subtrees) which fail the *untaint_pattern* are
       skipped. The default is to 'die' in such a case.