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Please read this first.

How can I force the internal perl representation to be two-byte utf-8, ... ?

Encode the string of characters.

use Devel::Peek;

my $str = "\326";
Dump $str; # not UTF-8 (1 char is 1 byte)

my $utf8 = $str;
utf8::upgrade($utf8);
Dump $utf8; # upgraded to UTF-8 (1 char is 2 bytes)

my $utf8_as_bytes = $str;
utf8::encode($utf8_as_bytes);
Dump $utf8_as_bytes; # not UTF-8 (2 chars with 1 byte each)

__END__
SV = PV(0x8519228) at 0x8061e38
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x852b250 "\326"\0
  CUR = 1
  LEN = 4
SV = PV(0x84556a0) at 0x8528b40
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK,UTF8)
  PV = 0x852b290 "\303\226"\0 [UTF8 "\x{d6}"]
  CUR = 2
  LEN = 3
SV = PV(0x84556a8) at 0x8528730
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x852b2a0 "\303\226"\0
  CUR = 2
  LEN = 3
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In reply to Re: Why does perl's internal utf8 seem to allow single-byte latin1? by repellent
in thread Why does perl's internal utf8 seem to allow single-byte latin1? by brycen

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