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turn on Unicode - all of it
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README.mkdn

NAME

utf8::all - turn on Unicode - all of it

VERSION

version 0.016

SYNOPSIS

use utf8::all;                # Turn on UTF-8, all of it.

open my $in, '<', 'contains-utf8';  # UTF-8 already turned on here
print length 'føø bār';             # 7 UTF-8 characters
my $utf8_arg = shift @ARGV;         # @ARGV is UTF-8 too (only for main)

DESCRIPTION

utf8 allows you to write your Perl encoded in UTF-8. That means UTF-8 strings, variable names, and regular expressions.

utf8::all goes further:

  • Makes @ARGV encoded in UTF-8 (when utf8::all is used from the main package).
  • Filehandles are opened with UTF-8 encoding turned on by default (including STDIN, STDOUT, STDERR). If you don't want UTF-8 for a particular filehandle, you'll have to set binmode $filehandle.
  • charnames are imported so \N{...} sequences can be used to compile Unicode characters based on names.
  • readdir now returns UTF-8 characters instead of bytes.
  • glob and the <> operator now return UTF-8 characters instead of bytes.

Lexical scope

The pragma is lexically-scoped, so you can do the following if you had some reason to:

{
    use utf8::all;
    open my $out, '>', 'outfile';
    my $utf8_str = 'føø bār';
    print length $utf8_str, "\n"; # 7
    print $out $utf8_str;         # out as utf8
}
open my $in, '<', 'outfile';      # in as raw
my $text = do { local $/; <$in>};
print length $text, "\n";         # 10, not 7!

SEE ALSO

INTERACTION WITH AUTODIE

If you use autodie, which is a great idea, you need to use at least version 2.12, released on June 26, 2012. Otherwise, autodie obliterates the IO layers set by the open pragma. See RT #54777 and GH #7.

AVAILABILITY

The project homepage is http://metacpan.org/release/utf8-all/.

The latest version of this module is available from the Comprehensive Perl Archive Network (CPAN). Visit http://www.perl.com/CPAN/ to find a CPAN site near you, or see https://metacpan.org/module/utf8::all/.

SOURCE

The development version is on github at http://github.com/doherty/utf8-all and may be cloned from git://github.com/doherty/utf8-all.git

BUGS AND LIMITATIONS

You can make new bug reports, and view existing ones, through the web interface at https://github.com/doherty/utf8-all/issues.

COMPATIBILITY

The filesystems of Dos, Windows, and OS/2 do not (fully) support UTF-8. The readdir function and glob operators will therefore not be replaced on these systems.

AUTHORS

COPYRIGHT AND LICENSE

This software is copyright (c) 2009 by Michael Schwern mschwern@cpan.org.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

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