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NAME

       Encode::GSM0338 -- ESTI GSM 03.38 Encoding

SYNOPSIS

         use Encode qw/encode decode/;
         $gsm0338 = encode("gsm0338", $utf8);    # loads Encode::GSM0338 implicitly
         $utf8    = decode("gsm0338", $gsm0338); # ditto

DESCRIPTION

       GSM0338 is for GSM handsets. Though it shares alphanumerals with ASCII, control character
       ranges and other parts are mapped very differently, mainly to store Greek characters.
       There are also escape sequences (starting with 0x1B) to cover e.g. the Euro sign.

       This was once handled by Encode::Bytes but because of all those unusual specifications,
       Encode 2.20 has relocated the support to this module.

NOTES

       Unlike most other encodings,  the following aways croaks on error for any $chk that
       evaluates to true.

         $gsm0338 = encode("gsm0338", $utf8      $chk);
         $utf8    = decode("gsm0338", $gsm0338,  $chk);

       So if you want to check the validity of the encoding, surround the expression with "eval
       {}" block as follows;

         eval {
           $utf8    = decode("gsm0338", $gsm0338,  $chk);
         };
         if ($@){
           # handle exception here
         }

BUGS

       ESTI GSM 03.38 Encoding itself.

       Mapping \x00 to '@' causes too much pain everywhere.

       Its use of \x1b (escape) is also very questionable.

       Because of those two, the code paging approach used use in ucm-based Encoding SOMETIMES
       fails so this module was written.

SEE ALSO

       Encode