2.4.3.8.1 Match
Function Signature: boolean xdUtil:match(string, Regular Expression)
This function MUST take two parameters:
String: This parameter MUST be a string.
Regular Expression: This parameter MUST be a valid XML regular expression.
This function MUST return TRUE if the input string conforms to the specified regular expression, or FALSE otherwise. String is specified in [XPATH] section 3.6. Regular expression is specified in [XMLSCHEMA1] Appendix F.