Re: xsl:comment and xsl:pi containing template elements?

I know quoting myself is silly but I need to clarify something here that I
overlooked.

Tyler Baker wrote:

> In looking at the DTD for the recently released XSL spec I noticed that
> besides xsl:element containing template data (character data,
> instructions, and result elements), the elements xsl:comment, xsl:pi,
> and xsl:attribute can contain template data.
>
> For xsl:comment I can kind of understand how this would be useful.
> Through macros you could use this as a sloppy version of ifdefing
> output.  For xsl:pi I suppose you could make the same argument.  For
> these two elements you open a lot of holes with producing correct
> output.  For example, how do you embed a comment within a comment
> without escaping (is this the desired way to process output?).  The same
> goes for embedding pi's within pi's.
>
> However, how on earth could you have a literal result element inside an
> attribute?

The draft says:

/////////////////////////////////////////////////////
The following are all errors:

Adding an attribute to an element after children have been added to it;
implementations may either signal the error or ignore the attribute.

Including nodes other than text nodes in the value of an attribute;
implementations may either signal the error or ignore the added nodes.

Adding an attribute that has the same name as an attribute already added;
implementations may either signal the error or ignore the duplicate
attribute.

Adding an attribute to a node that is not an element; implementations may
either signal the error or ignore the attribute.
///////////////////////////////////////////////////

Why not just have the DTD section for xsl:attribute be changed from:

<!ELEMENT xsl:attribute %template;>
<!ATTLIST xsl:attribute
  name CDATA #REQUIRED
  %space-att;
>

to:

<!ELEMENT xsl:attribute #PCDATA>
<!ATTLIST xsl:attribute
  name CDATA #REQUIRED
  %space-att;
>

The only reason I can think of for this not being the case now is some
future idea for extending this mechanism.



 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list