MAN page from Mandriva 2007 perl-5.8.8-7.1mdv2007.0.i586.rpm

Encode::Unicode::UTF7

Section: Perl Programmers Reference Guide (3pm)
Updated: 2001-09-21
Index

NAME

Encode::Unicode::UTF7 -- UTF-7 encoding

SYNOPSIS

    use Encode qw/encode decode/;     $utf7 = encode("UTF-7", $utf8);    $utf8 = decode("UTF-7", $ucs2);

ABSTRACT

This module implements UTF-7 encoding documented in RFC 2152. UTF-7,as its name suggests, is a 7-bit re-encoded version of UTF-16BE. Itis designed to be MTA-safe and expected to be a standard way toexchange Unicoded mails via mails. But with the advent of UTF-8 and8-bit compliant MTAs, UTF-7 is hardly ever used.

UTF-7 was not supported by Encode until version 1.95 because of that.But Unicode::String, a module by Gisle Aas which adds Unicode supportsto non-utf8-savvy perl did support UTF-7, the UTF-7 support was addedso Encode can supersede Unicode::String 100%.

In Practice

When you want to encode Unicode for mails and web pages, however, donot use UTF-7 unless you are sure your recipients and readers canhandle it. Very few MUAs and WWW Browsers support these days (onlyMozilla seems to support one). For general cases, use UTF-8 formessage body and MIME-Header for header instead.

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