I didn't know it used a temp file. If I were to build the module to do this I'd use Tie::Handle and overload the writing functions.
I didn't test this or even try to compile it.
my $data = tie $fh, 'Tie::Handle::Scalar::WithoutTemp';
print $fh "Hello world";
print $$data;
package Tie::Handle::Scalar::WithoutTemp;
use base 'Tie::Handle';
sub TIEHANDLE {
my $classname = shift;
my $data;
bless \ $data, $classname;
}
sub WRITE {
my ( $self, $scalar, $length, $offset ) = @_;
$$data .= substr $scalar, $offset, $length;
1;
}
sub PRINT {
$$data .= join $,, @_[ 1 .. $#_ ];
1;
}
sub PRINTF {
$$data .= sprintf $_[1], @_[ 2 .. $#_ ];
1;
}
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