NAME
Unicode::Homoglyph::Replace - replace homoglyphs with their ASCII
lookalike equivalents
SYNOPSIS
use Unicode::Homoglyph::Replace qw(replace_homoglyphs);
my $replaced = replace_homoglyphs("...");
...
DESCRIPTION
Unicode has various homoglyphs - characters which look the same or
mostly the the same, but are different characters.
If you're trying to filter input in some way, but support Unicode text,
then such homoglyphs can be used to get past your filters. For
instance, there are eleven other characters that look like a colon.
So, if someone wants to be a ⅾⅰⅽk to bypass your filters, they can
replace some characters with look-alike (or at least look-similar)
characters which your profanity / spam filters won't recognise. (That
example there was \x{217E}\x{2170}\x{217D}k - i.e. the characters SMALL
ROMAN NUMERAL FIVE HUNDRED, SMALL ROMAN NUMERAL ONE, SMALL ROMAN
NUMERAL ONE HUNDRED, and a "k".)
AUTHOR
David Precious, <davidp at preshweb.co.uk>
BUGS
Please report any bugs or feature requests to
bug-unicode-homoglyph-replace at rt.cpan.org, or through the web
interface at
http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Unicode-Homoglyph-Replac
e. I will be notified, and then you'll automatically be notified of
progress on your bug as I make changes.
SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Unicode::Homoglyph::Replace
You can also look for information at:
* RT: CPAN's request tracker (report bugs here)
http://rt.cpan.org/NoAuth/Bugs.html?Dist=Unicode-Homoglyph-Replace
* AnnoCPAN: Annotated CPAN documentation
http://annocpan.org/dist/Unicode-Homoglyph-Replace
* CPAN Ratings
http://cpanratings.perl.org/d/Unicode-Homoglyph-Replace
* Search CPAN
http://search.cpan.org/dist/Unicode-Homoglyph-Replace/
SEE ALSO
Unicode::Homoglyph, where the list of homoglyphs came from.
ACKNOWLEDGEMENTS
LICENSE AND COPYRIGHT
Copyright 2018 David Precious.
This program is free software; you can redistribute it and/or modify it
under the terms of the the Artistic License (2.0). You may obtain a
copy of the full license at:
http://www.perlfoundation.org/artistic_license_2_0
Any use, modification, and distribution of the Standard or Modified
Versions is governed by this Artistic License. By using, modifying or
distributing the Package, you accept this license. Do not use, modify,
or distribute the Package, if you do not accept this license.
If your Modified Version has been derived from a Modified Version made
by someone other than you, you are nevertheless required to ensure that
your Modified Version complies with the requirements of this license.
This license does not grant you the right to use any trademark, service
mark, tradename, or logo of the Copyright Holder.
This license includes the non-exclusive, worldwide, free-of-charge
patent license to make, have made, use, offer to sell, sell, import and
otherwise transfer the Package with respect to any patent claims
licensable by the Copyright Holder that are necessarily infringed by
the Package. If you institute patent litigation (including a
cross-claim or counterclaim) against any party alleging that the
Package constitutes direct or contributory patent infringement, then
this Artistic License to you shall terminate on the date that such
litigation is filed.
Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER
AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES.
THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY
YOUR LOCAL LAW. UNLESS REQUIRED BY LAW, NO COPYRIGHT HOLDER OR
CONTRIBUTOR WILL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES ARISING IN ANY WAY OUT OF THE USE OF THE PACKAGE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
POD ERRORS
Hey! The above document had some coding errors, which are explained
below:
Around line 23:
Non-ASCII character seen before =encoding in 'ⅾⅰⅽk'. Assuming UTF-8
