in module converters/html function parse returns empty sequence on error

[Dennis Knochenwefel]

Consider the following example Query:

  import module namespace json = "http://www.zorba-xquery.com/modules/converters/json";
  import module namespace html = "http://www.zorba-xquery.com/modules/converters/html";
  declare namespace j = "http://john.snelson.org.uk/parsing-json-into-xquery";
  let $text := "<p>" || json:parse("{""text"":""Let's get it. \ud83d\udc4a""}")/j:pair[@name="text"]/text() || "</p>"
  return html:parse($text)

Problem:

this query raises an error in file src/com/zorba-xquery/www/modules/converters/html.xq.src/tidy_wrapper.h function createHtmlItem(...) and returns an empty sequence. Yet, html:parse () has return type document-node() (not document-node()?). Therefore, it is not allowed to return an empty-sequence.

(not sure if chiller is you, chris?)