[Qexo-general] sequences and xml children

[fl]

with kawa1.7, unfortunately, there is still this strange thing which 
bother me for a long time.
Until now, I did not dare to ask...

define function x(){<a><b x="1"/></a>}

let $x:=<a>{for $b in x()/b return $b}</a> return $x/b
does not return anything !


However,
let $x:=<a>{for $b in x()/b return $b}</a> return children($x)
returns
<b x="1"/>

whose attribute cannot be extracted:

let $x:=<a>{for $b in x()/b return $b}</a> return children($x)/@x
does not return anything, either....


What returns "for" in nested xml expression is not xml anymore... Is 
this xquery?
if yes, how to obtain what seems "natural" ?
Bye !

Note: the ipsi-xq demonstrator at http://relimo.darmstadt.gmd.de/
returns what I expect...