attributes in xquery element constructor

[Marco Vezzoli <marco dot vezzoli at st dot com>]

When I try to do expression like this
...<element attribute={ $i}>...
kawa-xquery repl fails quietly and do not resume.
Here the shortest test i found editing a test case from W3C


<bib>
            {
             for $b in document("bib.xml")/bib/book
             return
               <book year={ $b/@year }>
                { $b/title }
               </book>
            }
           </bib>

where the bib.xml file is 

<bib>
               <book year="1994">
                   <title>TCP/IP Illustrated</title>
                  
<author><last>Stevens</last><first>W.</first></author>
                   <publisher>Addison-Wesley</publisher>
                   <price> 65.95</price>
               </book>
            
               <book year="1992">
                   <title>Advanced Programming in the Unix
environment</title>
                  
<author><last>Stevens</last><first>W.</first></author>
                   <publisher>Addison-Wesley</publisher>
                   <price>65.95</price>
               </book>
            
               <book year="2000">
                   <title>Data on the Web</title>
                  
<author><last>Abiteboul</last><first>Serge</first></author>
                  
<author><last>Buneman</last><first>Peter</first></author>
                   <author><last>Suciu</last><first>Dan</first></author>
                   <publisher>Morgan Kaufmann Publishers</publisher>
                   <price> 39.95</price>
               </book>
            
               <book year="1999">
                   <title>The Economics of Technology and Content for
Digital TV</title>
                   <editor>
                          <last>Gerbarg</last><first>Darcy</first>
                           <affiliation>CITI</affiliation>
                   </editor>
                       <publisher>Kluwer Academic Publishers</publisher>
                   <price>129.95</price>
               </book>
            
           </bib>
-- 
	(--cafe babe--) 
Marco Vezzoli	marco.vezzoli@st.com
CR&D Intranet Developement   STMicroelectronics
tel. +39 039 603 6852 fax. +39 039 603 5055