Dear BaseX team, I think there is a bug in the computed attribute constructor. If the name expression evaluates to a value of type xs:string or xs:untypedAtomic and the value contains no prefix, the attribute name should be in no namespace. However, the following code: <node xmlns="http://www.infospace.org/pcollection">{    attribute a1 {'foo1'},    attribute {'a2'} {'foo2'} }</node>

yields this result:<node xmlns:ns0="http://www.infospace.org/pcollection"    xmlns="http://www.infospace.org/pcollection"    a1="foo1"    ns0:a2="foo2"/>

While @a1 has the expected name, @a2 hasn't. I used the latest snapshot: BaseX 8.0 beta 95b7e5f [Standalone] Kind regards,Hans-Juergen http://www.w3.org/TR/xquery-30/#id-computedAttributes