Perl module for regular expressions for XML tokens This module provides regular expressions for the following XML tokens: BaseChar, Ideographic, Letter, Digit, Extender, CombiningChar, NameChar, EntityRef, CharRef, Reference, Name, NmToken, and AttValue. The definitions of these tokens were taken from the XML spec (Extensible Markup Language 1.0) at http://www.w3.org/TR/REC-xml. Also contains the regular expressions for the following tokens from the XML Namespaces spec at http://www.w3.org/TR/REC-xml-names: NCNameChar, NCName, QName, Prefix and LocalPart.