Regular expressions are used throughout much of the world's software for matching and manipulating text. UTS #18: Unicode Regular Expressions
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
, and it expands the guidelines and requirements for support of the Script_Extensions property.http://unicode-inc.blogspot.com/2013/11 ... dated.html