[xsl] paras with nested block-level elements to XHTML mix of <p>s and flattened block-level elements

[Daniel Grossberg <danielgr@xxxxxxxx>]

My question concerns X/HTML as the transformation target, where "p" is 
the lowest level block-level element, which admits no other block-level 
element(s) as content, but the source is a model (like DocBook, TEI, 
etc.) which allows (and has) a variety of block level content in paragraphs.
 
This doesn't appear to be a new problem... but while I've tried, I just 
haven't been able to track down any definitive solutions.

>From XSLT Requirements, Version 2.0, W3C Working Draft 14 February 2001
http://www.w3.org/TR/xslt20req
Under 4, the Simplify Grouping subsection:
 
Item    9.     Transform Inline <para> Elements to Block  <para> Elements
 
Transform from a DTD that allows para elements to have nested 
block-level elements to a DTD that requires para  elements to have only 
inline elements, e.g. transform:

                   <p>Do <em>not</em>:

                   <ul>

                   <li>talk,</li>

                   <li>eat, or</li>

                   <li>use your mobile telephone</li>

                   </ul>

                   while you are in the cinema.</p>


into:

                   <p>Do <em>not</em>:</p>

                   <ul>

                   <li>talk,</li>

                   <li>eat, or</li>

                   <li>use your mobile telephone</li>

                   </ul>

                   <p>while you are in the cinema.</p>

________________________________________

Questions for the XSL list: How does one solve this problem in XSLT 1.0? 
What is the optimal solution now, using XSLT 2.0?
 
 
To be comprehensive, the transform needs to account for not only the 
particular case above in the source... but also cases where text / mixed 
content might not follow after the close <ul> tag (, e.g:


                  <p>Do <em>not</em>:

                   <ul>

                   <li>talk,</li>

                   <li>eat, or</li>

                   <li>use your mobile telephone</li>

                   </ul>

                   </p>

and likewise, cases in the source where there's no text or mixed content 
preceding the <ul> tag... (e.g., <p><ul>... ... ...</ul> text.</p>).
 
 
My searches for existing solutions to this using XSLT 1.0 and 2.0 have 
not met success, tho it seems like a pretty common problem for any 
conversion from a number of DTD standards to X/HTML.

Any suggestions for a robust method to handle this kind of problem... 
and/or pointers to solutions that have already been developed for this 
would be most appreciated.
 
Thanks!

daniel

[PS. For testing, I use the Saxon XSLT processors for XSLT 1.0 and 2.0 
as provided with the latest oXygen editor, v9.3]