Unicode Regular Expressions Updated

Regular expressions are used throughout much of the world's software for
matching and manipulating text. UTS #18: Unicode Regular Expressions
<http://www.unicode.org/reports/tr18/> provides the foundation for the
handling of Unicode text in those expressions.

Version 17 of this standard adds the Bidi_Paired_Bracket and
Bidi_Paired_Bracket_Type properties, both new in Unicode 6.3
<http://unicode-inc.blogspot.com/2013/09/announcing-unicode-standard-version-63.html>,
and it expands the guidelines and requirements for support of the
Script_Extensions property.

http://unicode-inc.blogspot.com/2013/11/unicode-regular-expressions-updated.html

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