```xquery element { 'elementname' } { attribute { QName('', 'attrname') } { 'attrval' }, xquery:eval('true()') } ``` * Expected: `<elementname attrname="attrval">true</elementname>` * Returned: `[XPST0017] Unknown function: true (similar: fn:true).`
<elementname attrname="attrval">true</elementname>[XPST0017] Unknown function: true (similar: fn:true).