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 . SEE ALSO PerlIO::via::UnicodeDebug, Devel::Unicode. AUTHOR Toby Inkster . 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.