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.\" ========================================================================
.\"
.IX Title "Encode::GSM0338 3"
.TH Encode::GSM0338 3 "2019-10-24" "perl v5.30.2" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Encode::GSM0338 \-\- ESTI GSM 03.38 Encoding
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 3
\&  use Encode qw/encode decode/; 
\&  $gsm0338 = encode("gsm0338", $utf8);    # loads Encode::GSM0338 implicitly
\&  $utf8    = decode("gsm0338", $gsm0338); # ditto
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\s-1GSM0338\s0 is for \s-1GSM\s0 handsets. Though it shares alphanumerals with \s-1ASCII,\s0
control character ranges and other parts are mapped very differently,
mainly to store Greek characters.  There are also escape sequences
(starting with 0x1B) to cover e.g. the Euro sign.
.PP
This was once handled by Encode::Bytes but because of all those
unusual specifications, Encode 2.20 has relocated the support to
this module.
.SH "NOTES"
.IX Header "NOTES"
Unlike most other encodings,  the following always croaks on error
for any \f(CW$chk\fR that evaluates to true.
.PP
.Vb 2
\&  $gsm0338 = encode("gsm0338", $utf8      $chk);
\&  $utf8    = decode("gsm0338", $gsm0338,  $chk);
.Ve
.PP
So if you want to check the validity of the encoding, surround the
expression with \f(CW\*(C`eval {}\*(C'\fR block as follows;
.PP
.Vb 5
\&  eval {
\&    $utf8    = decode("gsm0338", $gsm0338,  $chk);
\&  } or do {
\&    # handle exception here
\&  };
.Ve
.SH "BUGS"
.IX Header "BUGS"
\&\s-1ESTI GSM 03.38\s0 Encoding itself.
.PP
Mapping \ex00 to '@' causes too much pain everywhere.
.PP
Its use of \ex1b (escape) is also very questionable.
.PP
Because of those two, the code paging approach used use in ucm-based
Encoding \s-1SOMETIMES\s0 fails so this module was written.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Encode