19654 2012-10-22 07:36:30 +0000 Extensions to regular expression capabilities 2012-10-22 08:17:47 +0000 1 1 1 Unclassified XPath / XQuery / XSLT Requirements for Future Versions Working drafts All All NEW P2 enhancement --- 1 wys01 jim.melton mike public-qt-comments oldest_to_newest 76892 0 wys01 2012-10-22 07:36:30 +0000 The current regular expression functions allow you to pass in flags to alter the regular expression processing. One of these flags implemented in Saxon is the exclamation mark to indicate that the regular expression be treated as a Java regular expression rather than one conforming to the current specification. It would be good to have a standard way of extending or switching the regular expression syntax/processing engine that would not be implementation specific. 76893 1 mike 2012-10-22 08:17:47 +0000 I agree (despite being slightly embarrassed to have this "easter egg" exposed in public). I would suggest flags ::= standard-flags ( ';' imp-def-flags )? standard-flags ::= [imsx] imp-def-flags ::= .* where the effect of imp-def-flags on the syntax and semantics of the regular expression is implementation-defined.