sub output_path {
    my ($self, $head) = @_;

    ### Get the output directory:
    my $dir = $self->output_dir($head);
    
    ### Get the output filename, decoding into the local character set:
    my $fname = unmime $head->recommended_filename;

    ### Can we use it:
    if    (!defined($fname)) {
	$self->debug("no filename recommended: synthesizing our own");
	$fname = $self->output_filename($head);
    }
    elsif ($self->ignore_filename) {
	$self->debug("ignoring all external filenames: synthesizing our own");
	$fname = $self->output_filename($head);
    }
    elsif ($self->evil_filename($fname)) {

	### Can we save it by just taking the last element?
	my $ex = $self->exorcise_filename($fname);
	if (defined($ex) and !$self->evil_filename($ex)) {
	    $self->whine("Provided filename '$fname' is regarded as evil, ",
			 "but I was able to exorcise it and get something ",
			 "usable.");
	    $fname = $ex;
	}
	else {
	    $self->whine("Provided filename '$fname' is regarded as evil; ",
			 "I'm ignoring it and supplying my own.");
	    $fname = $self->output_filename($head);
	}
    }
    $self->debug("planning to use '$fname'");

    ### Resolve collisions and return final path:
    return $self->find_unused_path($dir, $fname);
}