sub t {
    my ($a, $b) = @_;
    my ($wa, $wb, $db);

#    print STDERR "t: a: @$a\n";
#    print STDERR "t: b: @$b\n";
    if (@$a == @$b) {
	for $wa (@$a) {
	    $wb = shift(@$b);
	    $db = defined $wb;
	    chomp($wb) if $db;
	    if (not $db or $wa ne $wb) {
#		print STDERR "ne: $wa $wb\n";
		print 'not ';
		last;
	    }
	}
    } else {
#	print STDERR "!=: ", scalar @$a, " ", scalar @$b, "\n";
	print 'not ';
    }
}

1;
