Re: [xmlc] <br clear="none"></br>

On Apr 16, 2007, at 6:21 PM, Jacob Kjome wrote:
> I don't have time to check ATM, because I'm at work.

It's a shame that you selfless OSS heroes have to have day jobs too.

> However, can you look at
> the DTD?  Does it have default values defined for these  
> attributes?  If so, the
> parser is probably filling those in automagically.

I don't speak DTD very fluently, but the relevant lines of xhtml.jar/ 
org/enhydra/xml/xhtml/dtd/w3/1.1/xhtml11-flat.dtd seem to be:

---
<!-- br: forced line break ............................. -->

<!ENTITY % br.element  "INCLUDE" >
<![%br.element;[

<!ENTITY % br.content  "EMPTY" >
<!ENTITY % br.qname  "br" >
<!ELEMENT %br.qname;  %br.content; >

<!-- end of br.element -->]]>

<!ENTITY % br.attlist  "INCLUDE" >
<![%br.attlist;[
<!ATTLIST %br.qname;
      %Core.attrib;
>
<!-- end of br.attlist -->]]>
---

Sure looks like there isn't anything about a "clear" attribute  
there.  Perhaps I'm looking in the wrong place?

> Not sure what could be done
> about that other than changing the DTD (which is feasible, since  
> XMLC contains
> its own local copies of the DTD, but care would need to be taken  
> for any change
> to a published DTD)

The "clear" attribute is deprecated in the HTML4 spec.  It wasn't  
deprecated in HTML3.2.

> or having the user delete the attribute (which would be
> annoying, I admit).

Indeed.

> As far as outputing <br ...></br> instead of <br .../>, that's  
> probably
> something I can control in the serializer code.  I'll try to look  
> into it
> tonight.  There's no reason it should be output with the former  
> format as BR's
> content model is empty, at least as far as I am aware.

The XHTML spec says, "Use the minimized tag syntax for empty  
elements, e.g. <br />, as the alternative syntax <br></br> allowed by  
XML gives uncertain results in many existing user agents."

Oooh!  I just found this:
---
<!ATTLIST %br.qname;
      clear        ( left | all | right | none ) 'none'
>
---
on this page: http://www.w3.org/TR/xhtml-modularization/ 
dtd_module_defs.html

I'm not familiar enough with XML and DTDs to know if the XHTML  
Modularization 1.1 DTD applies to XMLC and this particular problem.

Did my research help at all?  I can't say that it cleared things up  
any for me.  :-(

Thanks for your promptness,
Erik




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