Parse failure reports

Currently my implementation reports a parse failure like this:


 *** Parsing failed at line 1, position 2
 a b.
  ^
 *** Permitted at this position: [",.;:'?!"].


but the spec says


"If the parse fails, some XML document must be produced with 
ixml:state="failed" on the document element. The document should provide 
helpful information about where and why it failed; it may be a partial 
parse tree that includes parts of the parse that succeeded."


Any opinions on how suitably to return this information?


<report  ixml:state="failed" xmlns="https://invisiblexml.org/NS" 
xmlns:ixml="https://invisiblexml.org/NS">
*** Parsing failed at line 1, position 2
 a b.
  ^
*** Permitted at this position: [",.;:'?!"].
</report>


<report  ixml:state="failed" xmlns="https://invisiblexml.org/NS" 
xmlns:ixml="https://invisiblexml.org/NS">
    <message position="line 1, position 2">Parsing failed</message>
    <line>a b.</line>
    <pos> ^</pos>
    <message>Permitted at this position: [",.;:'?!"].</message>
</report>


Steven