[JDEV] Rich Text in Messages

[Thomas Charron]

From: "David Waite" <dwaite at jabber.com>
Subject: Re: [JDEV] Rich Text in Messages
> The fact is that if x or query are listed in any existing jabber DTD, that
is
> an error.  We aren't talking about extending the jabber DTD, but allowing
a
> new type of data to be inserted/'spliced'.
> If you just put 'html' without the xmlns, it would indeed be an error as
you
> would still be using the jabber DTD. As soon as you put a new default
> namespace, you are now using that namespace's DTD.
> Of course, anyone knowing the exact spec for XML Namespaces is more than
> welcome to clarify or to correct me :)

    Alrighty, after several hours of reading up on namespaces, I am *SO*
wrong it's not funny.  I was under the impression that all child tags, even
those containing an external DTD, where required to be present in the parent
tags DTD as well.  I was dead wrong, and it seems to actually be a popular
misconception.  Here's a good example that literally shows it:

-- *Included*
  <!-- A, B, C, and G are in the http://www.foo.org/ namespace. -->
  <A xmlns="http://www.foo.org/">
     <B>abcd</B>
     <C>efgh</C>
     <!-- D, E, and F are in the http://www.bar.org/ namespace. -->
     <D xmlns="http://www.bar.org/">
        <E>1234</E>
        <F>5678</F>
     </D>
     <!-- Remember! G is in the http://www.foo.org/ namespace. -->
     <G>ijkl</G>
  </A>



    You are correct.  The X and query tags SHOULD NOT be present in the
Jabber DTD.  They are extention tags.

  Please, start bonking me in the head whilst I retreat into my hole to beat
myself with a plunger.. :-)