This script…

#!perl

use strict;
use warnings;

use open qw( :encoding(UTF-8) :std );
use Text::CSV_XS;

my $csv = Text::CSV_XS->new({
    always_quote => 1,
    binary       => 1,
    eol          => $/,
});

while (my $fields = $csv->getline(*ARGV)) {
    $csv->print(\*STDOUT, $fields);
}

$csv->eof() or $csv->error_diag();

exit 0;

[download]

…produces this output…

"BLACK SPADE SUIT","BLACK HEART SUIT","BLACK DIAMOND SUIT","BLACK CLUB SUIT"
"♠","♥","♦","♣"

…from this UTF-8 input…

"BLACK SPADE SUIT","BLACK HEART SUIT","BLACK DIAMOND SUIT","BLACK CLUB SUIT"
"♠","♥","♦","♣"

Why?

If I remove the use open statement, the output is identical to the input. This is exactly the reverse of the behavior I expect.

I'm using Strawberry Perl 5.12 for Windows and Text::CSV_XS version 0.85.

(I don't know the answer to the question I'm asking despite having dutifully read all the relevant documentation. Just pointing me toward a perldoc page won't help me. Thanks.)

In reply to Why Doesn't Text::CSV_XS Print Valid UTF-8 Text When Used With the open Pragma? by Jim

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