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Thank you very much, Your Mother!

This works wonderfully, and it makes sense given the known cause of the encoding corruption.

use v5.16;
use utf8;
use open qw( :encoding(UTF-8) :std );
use Encode qw( encode decode );

while (my $damaged_text = <DATA>) {
    chomp $damaged_text;

    my $repaired_text = decode('UTF-8', encode('UCS-2LE', $damaged_text));

    say $repaired_text;

close DATA;

exit 0;


This prints…

    Re: URGENT
    Letís go to 日本国!

…as expected.

In this case, use utf8 is required.

In reply to Re^2: How to Fix Character Encoding Damaged Text Using Perl? by Jim
in thread How to Fix Character Encoding Damaged Text Using Perl? by Jim

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