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Why does ch.oddb.org need regular expressions

Email from Hannes, 19.2.2010

 Oniguruma brauchen wir, weil wir für gewisse Datenimporte sogenannte
 Regexp-lookbehind brauchen, die mit der Standard-Regexp-Engine von Ruby
 nicht möglich sind.

also see

 http://www.justskins.com/forums/regex-look-behind-122616.html

a Ruby Forum post "Alternative for look behind"

 http://www.ruby-forum.com/topic/162918

More about look-behinds from 2005

 http://groups.google.com/group/comp.lang.ruby/browse_thread/thread/f0d76ceff808fbf9

More useful information

 http://www.artima.com/forums/flat.jsp?forum=123&thread=145707

Some help howto install on windows

 http://book.opensourceproject.org.cn/lamp/ruby/rubyway2nd/opensource/0768667208/ch03lev1sec13.html

A presentation mentioning Look-Behinds

 http://www.scribd.com/doc/2589469/Migrating-to-Ruby-19
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