This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.
At the moment, only http://www.w3.org/1999/XSL/Transform (XSLT) code completion is supported in the editor. http://www.w3.org/1999/XSL/Format is complex and does not have a readily accessible schema, so having code completion and validation for it would be very helpful.