push(@array, {%$rest}) if defined($rest) && %$rest;
    # trim off undefined values at end
    pop(@array) while !defined $array[-1];

    $self->{COOKIES}{$domain}{$path}{$key} = \@array;
    $self;
}


sub save
{
    my $self = shift;
    my $file = shift || $self->{'file'} || return;
    local(*FILE);
    open(FILE, ">$file") or die "Can't open $file: $!";
    print FILE "#LWP-Cookies-1.0\n";
    print FILE $self->as_string(!$self->{ignore_discard});
    close(FILE);
    1;
}


sub load
{
    my $self = shift;
    my $file = shift || $self->{'file'} || return;
    local(*FILE, $_);
    local $/ = "\n";  # make sure we got standard record separator
    open(FILE, $file) or return;
    my $magic = <FILE>;
    unless ($magic =~ /^\#LWP-Cookies-(\d+\.\d+)/) {
	warn "$file does not seem to contain cookies";
	return;
    }
    while (<FILE>) {
	next unless s/^Set-Cookie3:\s*//;
	chomp;
	my $cookie;
	for $cookie (_split_header_words($_)) {
	    my($key,$val) = splice(@$cookie, 0, 2);
	    my %hash;
	    while (@$cookie) {
		my $k = shift @$cookie;
		my $v = shift @$cookie;
		$hash{$k} = $v;
	    }
	    my $version   = delete $hash{version};
	    my $path      = delete $hash{path};
	    my $domain    = delete $hash{domain};
	    my $port      = delete $hash{port};
	    my $expires   = str2time(delete $hash{expires});

	    my $path_spec = exists $hash{path_spec}; delete $hash{path_spec};
	    my $secure    = exists $hash{secure};    delete $hash{secure};
	    my $discard   = exists $hash{discard};   delete $hash{discard};

	    my @array =	($version,$val,$port,
			 $path_spec,$secure,$expires,$discard);
	    push(@array, \%hash) if %hash;
	    $self->{COOKIES}{$domain}{$path}{$key} = \@array;
	}
    }
    close(FILE);
    1;
}


sub revert
{
    my $self = shift;
    $self->clear->load;
    $self;
}


sub clear
{
    my $self = shift;
    if (@_ == 0) {
	$self->{COOKIES} = {};
    }
    elsif (@_ == 1) {
	delete $self->{COOKIES}{$_[0]};
    }
    elsif (@_ == 2) {
	delete $self->{COOKIES}{$_[0]}{$_[1]};
    }
    elsif (@_ == 3) {
	delete $self->{COOKIES}{$_[0]}{$_[1]}{$_[2]};
    }
    else {
	require Carp;
        Carp::carp('Usage: $c->clear([domain [,path [,key]]])');
    }
    $self;
}


sub clear_temporary_cookies
{