utf8::all(3pm) [debian man page]

utf8::all(3pm)						User Contributed Perl Documentation					    utf8::all(3pm)

NAME

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

VERSION

       version 0.004

SYNOPSIS

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

	   open my $in, '<', 'contains-utf8';  # UTF-8 already turned on here
	   print length 'foo bXr';	       # 7 UTF-8 characters
	   my $utf8_arg = shift @ARGV;	       # @ARGV is UTF-8 too!

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, and makes @ARGV encoded in UTF-8, and filehandles are opened with UTF-8 encoding turned on by default (including STDIN, STDOUT,
       STDERR), and charnames are imported so "N{...}" sequences can be used to compile Unicode characters based on names. If you don't want
       UTF-8 for a particular filehandle, you'll have to set "binmode $filehandle".

       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 = 'foo bXr';
	       print length $utf8_str, "
"; # 7
	       print $out $utf8_str;	     # out as utf8
	   }
	   open my $in, '<', 'outfile';      # in as raw
	   my $text = do { local $/; <$in>};
	   print length $text, "
";	     # 10, not 7!

AVAILABILITY

       The project homepage is http://metacpan.org/release/utf8-all/ <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 http://search.cpan.org/dist/utf8-all/ <http://search.cpan.org/dist/utf8-all/>.

       The development version lives at http://github.com/doherty/utf8-all <http://github.com/doherty/utf8-all> and may be cloned from
       git://github.com/doherty/utf8-all.git <git://github.com/doherty/utf8-all.git>.  Instead of sending patches, please fork this project using
       the standard git and github infrastructure.

SOURCE

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

BUGS AND LIMITATIONS

       No bugs have been reported.

       Please report any bugs or feature requests through the web interface at https://github.com/doherty/utf8-all/issues
       <https://github.com/doherty/utf8-all/issues>.

AUTHORS

       o   Michael Schwern <mschwern@cpan.org>

       o   Mike Doherty <doherty@cpan.org>

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.

perl v5.14.2							    2012-01-10							    utf8::all(3pm)

Check Out this Related Man Page

Perl::Critic::Policy::InputOutput::RequireEncodingWithUTUseryContributed Perl DoPerl::Critic::Policy::InputOutput::RequireEncodingWithUTF8Layer(3)

NAME

       Perl::Critic::Policy::InputOutput::RequireEncodingWithUTF8Layer - Write "open $fh, q{<:encoding(UTF-8)}, $filename;" instead of "open $fh,
       q{{<:utf8}, $filename;".

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       Use of the ":utf8" I/O layer (as opposed to ":encoding(UTF8)" or ":encoding(UTF-8)") was suggested in the Perl documentation up to version
       5.8.8. This may be OK for output, but on input ":utf8" does not validate the input, leading to unexpected results.

       An exploit based on this behavior of ":utf8" is exhibited on PerlMonks at <http://www.perlmonks.org/?node_id=644786>. The exploit involves
       a string read from an external file and sanitized with "m/^(w+)$/", where $1 nonetheless ends up containing shell meta-characters.

       To summarize:

	open $fh, '<:utf8', 'foo.txt';		   # BAD
	open $fh, '<:encoding(UTF8)', 'foo.txt';   # GOOD
	open $fh, '<:encoding(UTF-8)', 'foo.txt';  # BETTER

       See the Encode documentation for the difference between "UTF8" and "UTF-8". The short version is that "UTF-8" implements the Unicode
       standard, and "UTF8" is liberalized.

       For consistency's sake, this policy checks files opened for output as well as input, For complete coverage it also checks "binmode()"
       calls, where the direction the operation can not be determined.

CONFIGURATION

       This Policy is not configurable except for the standard options.

NOTES

       Because "Perl::Critic" does a static analysis, this policy can not detect cases like

	my $encoding = ':utf8';
	binmode $fh, $encoding;

       where the encoding is computed.

SEE ALSO

       PerlIO

       Encode

       "perldoc -f binmode"

       <http://www.socialtext.net/perl5/index.cgi?the_utf8_perlio_layer>

       <http://www.perlmonks.org/?node_id=644786>

AUTHOR

       Thomas R. Wyant, III wyant at cpan dot org

COPYRIGHT

       Copyright (c) 2010-2011 Thomas R. Wyant, III

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

perl v5.16.3							    2014-06-09	Perl::Critic::Policy::InputOutput::RequireEncodingWithUTF8Layer(3)

Linux and UNIX Man Pages

utf8::all(3pm) [debian man page]

Check Out this Related Man Page