[Qexo-general] direct cdata, comment, and pi constructors in CVS Qexo

[Per Bothner]

The current CVS version of Qexo now supports direct comment 
constructors, direct proccessing instructions constructors, and CDATA 
constructors.  So you can now do:

<a>
  <![CDATA[a CDATA section]]>
  <!--a comment-->
  <?xql a processing instruction?>
</a>

Internally, the data model has been extended/fixed to support these node 
types, and the XML parser (as invoked by the doc function) passes them 
through, and the XML printer/serializer prints them.

Note that there is no such thing as "CDATA nodes" in the XQuery data 
model, which doesn't distinguish between plain text content and CDATA. 
So <a>foo<![CDATA[xx]]>bar</a> contains just a single text node - but 
Qexo is smart enough to remember that the "xx" was part of a CDATA section.

There is still no "magic" to remember character references; they do get 
turned into their correspinding Unicode character by the XML parser. 
But it wouldn't be difficult to change that.  If so we, can change the 
default XML printer behavior to only use character references for text 
that was created using character references, fixing a problem for people 
who use non-English letters.  No promises, however, if/when that get done.
--
        --Per Bothner
address@hidden   http://per.bothner.com/