[xml] Request for XML Schema identity-constraint test cases

[Kasimier Buchcik <K Buchcik 4commerce de>]

Hi,

We are currently fixing some XML Schema identity-constraint (IDC)
bugs.
To help finally closing the IDC issues before the next release:
this is a request for contribution of real-live test cases, which
involve identity-constaints - the weirder the better. The W3C XML
Schema test suite does not cover all real-live scenarios, so
your cases will be of great help to discover any lurking bugs.

Regards,

Kasimier