Strings are treated as iso-latin-1 by default. Decode them if they're not.

my $s = "\xC2\x85";
print(length($s), "\n");  # 2 iso-latin-1 chars
utf8::decode($s);
print(length($s), "\n");  # 1 character
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Way of decoding:

• use open 'std', 'locale';
• use open IO => 'encoding(UTF-8)';
• open(my $fh, '<:encoding(UTF-8)', ...)
• utf8::decode($s);
• use Encode qw( decode ); $s = decode('UTF-8', $s);

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