Regular fragmentations are an approach to proecessing textual content as if it had been represented as more finely-grained markup. The XML Schema Datatypes specification, for instance, offers a number of lexically compound types among its primitive types, requiring developers to rely on extension functions or XML Schema processing to manipulate them with XSLT. Regular fragmentations allow developers to specify the application of regular expression to element content (attribute content coming soon!) using an XML-based rules syntax. An open source SAXFilter implementation allows the use of regular fragmentations in a wide variety of XML processing environments.