parse-xml-fragment error message

[William Candillon]

parse-xml-fragment error message could be improved:

declare namespace err = "http://www.w3.org/2005/xqt-errors";
declare namespace zerr = "http://www.zorba-xquery.com/errors";

let $src := '<Book ISBN="ISBN-0-13-713526-2" Price="85" Edition="3rd">
  <Title>A First Course in Database Systems</Title>
  <Authors>
    <Author>
      <First_Name>Jeffrey</First_Name>
      <Last_Name>Ullman</Last_Name>'
return
    try {
        parse-xml-fragment($src)
    } catch * {
        {
          "error": true,
          "code": $err:code,
          "description": $err:description,
          "module": $err:module,
          "line-number": $err:line-number,
          "column-number": $err:column-number,
          "line-number-end": $zerr:line-number-end,
          "column-number-end": $zerr:column-number-end
        }
    }

Returns
{ "error" : true, "code" : "err:FODC0006", "description" : "invalid content passed to fn:parse-xml-fragment(): \"malformed XML document at \"zorba://internalDocumentURI-2\"\":zorba://internalDocumentURI-2,: loader parsing error", "module" : "/Users/wcandillon/28msec/zorba/build/test3.xq", "line-number" : 12, "column-number" : 9, "line-number-end" : 12, "column-number-end" : 33 }

The error message is not very explicit. For the same input, parse-xml() returns the appropriate/expected error message.