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Top Forums Shell Programming and Scripting Regex to identify illegal characters in a perso-arabic database Post 303002550 by gimley on Sunday 27th of August 2017 11:46:59 AM
Old 08-27-2017
Sorry for the delay in responding but I was unwell and could not respond. I would like to thank all who took the trouble to answer my query.
The issue is that the Arabic code block is huge and has characters that look alike. Very often data entry operators use a character /characters which are not part of the character set of a language [in this case Sindhi] and these are what we term as illegal. When these invalid/illegal characters are part of a dictionary, the results are disastrous, especially in storage and Natural Language processing.
This is the reason of my query, I tried the solutions provided and they all work and I am really thankful to all for your help.
Why I needed a simple regex was that my text processors: Ultraedit and Notepad++ both support regexes in perl and Unix and instead of "grepping" the strings, a macro based on a regex would help me identify all such invalid strings. I am still curious why the regex did not work. Any light on the same would really help.
Many thanks once again.
 

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Encode::Arabic::ArabTeX::ZDMG(3pm)			User Contributed Perl Documentation			Encode::Arabic::ArabTeX::ZDMG(3pm)

NAME
Encode::Arabic::ArabTeX::ZDMG - ZDMG phonetic transcription of Arabic using the ArabTeX notation REVISION
$Revision: 808 $ $Date: 2009-02-10 00:19:07 +0100 (Tue, 10 Feb 2009) $ SYNOPSIS
use Encode::Arabic::ArabTeX::ZDMG; # imports just like 'use Encode' would, plus extended options while ($line = <>) { # maps the ArabTeX notation for Arabic into the Latin symbols print encode 'utf8', decode 'zdmg', $line; # 'ZDMG' alias 'ArabTeX-ZDMG' } # ArabTeX lower ASCII transliteration <--> Latin phonetic transcription, ZDMG style $string = decode 'ArabTeX-ZDMG', $octets; $octets = encode 'ArabTeX-ZDMG', $string; DESCRIPTION
ArabTeX is an excellent extension to TeX/LaTeX designed for typesetting the right-to-left scripts of the Orient. It comes up with very intuitive and comprehensible lower ASCII transliterations, the expressive power of which is even better than that of the scripts. Encode::Arabic::ArabTeX::ZDMG implements the rules needed for proper interpretation of the ArabTeX notation of Arabic into the phonetic transcription in the ZDMG style. The conversion ifself is done by Encode::Mapper, and the user interface is built on the Encode::Encoding module. Relevant guidance is given in Encode::Arabic::ArabTeX, from which this module inherits. The transformation rules are, however, quite different ;) SEE ALSO
Encode::Arabic::ArabTeX, Encode::Arabic, Encode::Mapper, Encode::Encoding, Encode ArabTeX system <ftp://ftp.informatik.uni-stuttgart.de/pub/arabtex/arabtex.htm> Klaus Lagally <http://www.informatik.uni-stuttgart.de/ifi/bs/people/lagall_e.htm> ArabTeX extensions <http://sourceforge.net/projects/encode-arabic/> ArabXeTeX <http://tug.ctan.org/info/?id=arabxetex> Encode Arabic: Exercise in Functional Parsing <http://ufal.mff.cuni.cz/padt/online/2006/06/encode-arabic.html> AUTHOR
Otakar Smrz, <http://ufal.mff.cuni.cz/~smrz/> eval { 'E<lt>' . ( join '.', qw 'otakar smrz' ) . "x40" . ( join '.', qw 'mff cuni cz' ) . 'E<gt>' } Perl is also designed to make the easy jobs not that easy ;) COPYRIGHT AND LICENSE
Copyright 2003-2009 by Otakar Smrz This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.10.1 2010-01-18 Encode::Arabic::ArabTeX::ZDMG(3pm)
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