#!./perl

use Config;

use IO::Handle;
use IO::File;

iohandle::output_autoflush($^STDERR, 1);
iohandle::output_autoflush($^STDOUT, 1);

print $^STDOUT, "1..6\n";

print $^STDOUT, "ok 1\n";

my $dupout = IO::Handle->new->fdopen( $^STDOUT ,"w");
my $duperr = IO::Handle->new->fdopen( $^STDERR ,"w");

my $stdout = $^STDOUT; bless $stdout, "IO::File"; # "IO::Handle";
my $stderr = $^STDERR; bless $stderr, "IO::Handle";

$stdout->open( "Io.dup","w") || die "Can't open stdout";
$stderr->fdopen($stdout,"w");

print $stdout, "ok 2\n";
print $stderr, "ok 3\n";

# Since some systems don't have echo, we use Perl.
my $echo = qq{$^EXECUTABLE_NAME -le "print \\\$^STDOUT, q(ok \%d)"};

my $cmd = sprintf $echo, 4;
print $^STDOUT, `$cmd`;

$cmd = sprintf "$echo 1>&2", 5;
$cmd = sprintf $echo, 5 if $^OS_NAME eq 'MacOS';
print $^STDOUT, `$cmd`;

$stderr->close;
$stdout->close;

$stdout->fdopen($dupout,"w");
$stderr->fdopen($duperr,"w");

if ($^OS_NAME eq 'MSWin32' || $^OS_NAME eq 'NetWare' || $^OS_NAME eq 'VMS') { print $^STDOUT, `type Io.dup` }
elsif ($^OS_NAME eq 'MacOS') { system 'Catenate Io.dup' }
else                   { system 'cat Io.dup' }
unlink 'Io.dup';

print $^STDOUT, "ok 6\n";