NAME
    Unicode::Debug - debug Unicode strings

SYNOPSIS
     use Unicode::Debug;
 
     print unidebug("Héllò Wörld"), "\n";

DESCRIPTION
    Makes non-ASCII/non-printable characters in a string blindingly obvious.

  Functions
    `unidebug`
        This function replaces "unusual" characters in strings with a Perl
        escape sequence that will have the same effect. The example in the
        SYNOPSIS outputs this:

         H\x{00e9}ll\x{00f2} W\x{00f6}rld

        Which characters are considered unusual? Everything outside the range
        \x20 to \x7F. (The \t, \r and \n characters are handled separately.)

        To ensure that `unidebug` is reversible, backslashes in the input are
        doubled in the output.

        Called in void context, it modifies the strings passed to it in-place.
        For example, the following will output the same as the previous
        example.

          my @strings = ("Héllò", "Wörld");
          unidebug(@strings);
          say(join " ", @strings);

        Called in list context, it returns modified versions of the strings
        passed to it. Another example:

          my @strings = unidebug("Héllò", "Wörld");
          say(join " ", @strings);

        Called in scalar context, it acts the same as in list context, but
        only returns the first modified string.

    `unidecode`
        An alias for `unidebug`, to use as a drop-in replacement for
        Text::Unidecode.

  Package Variables
    OK, so global variables are perhaps not the best way to configure things,
    but we have `local` so quit complaining.

   $Unicode::Debug::Whitespace
    If set to true, debugs "\r", "\n" and "\t" as well. They are substituted
    as follows:

     "\r\n"    => "\\r\\n\n"
     "\r"      => "\\r\n"
     "\n"      => "\\n\n"
     "\t"      => "\\t"

    When false, these whitespace characters are passed through unchanged.
    False by default.

   $Unicode::Debug::Names
    If set to true, will use charnames to show character names for substituted
    characters. "Wörld" becomes:

     W\N{LATIN SMALL LETTER O WITH DIAERESIS}rld

    False by default.

BUGS
    Please report any bugs to
    <http://rt.cpan.org/Dist/Display.html?Queue=Unicode-Debug>.

SEE ALSO
    PerlIO::via::UnicodeDebug, Devel::Unicode.

AUTHOR
    Toby Inkster <tobyink@cpan.org>.

COPYRIGHT AND LICENCE
    This software is copyright (c) 2012-2013 by Toby Inkster.

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

DISCLAIMER OF WARRANTIES
    THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
    WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
    MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.