: it sure seems to me that if SOLR is returning XML, it might as well return : XML with real markup through and through instead of exploiting : pseudo-markup. if there is concern about introducing validation errors, then : perhaps you could use namespaces in the XML and put the highlighting markup : in a non-SOLR namespace???
the problem is that XML is only one of many formats Solr can return, and the "psuedo-markup" can be choosen by the client completely independent of the output format -- it might be <em>...</em> or it might me [HiGhLiGhT"START}...<EnD] -- the choice is entirely up to the user, and the XMLResposneWriter must ensure that it is properly escaped so it produces a valid XML document, just as the JSONResponseWriter must ensure that it's properly escaped to produce a valid JSON document. -Hoss
