Re: XSLT splitting (grouping?) hierarchical structure

Dear XSL List,

It's not the first time I'm facing a splittingB problem working with publishing documents.
I used to findB kind of tricky/verbose solutions but I'm wondering if I'm missing something obvious, especially with XSLT 3.0 new features ?

My XML looks like this :
<root>
B <section>
B B <title>Title</title>
B B <content>
B B B <p>paragraph #1</p>
B B B <p>paragraph #2 to split <split id="split-1"/> here</p>
B B B <p>paragraph #3</p>
B B B <p>paragraph #4 <strong> to split <split id="split-2"/> here</strong> if possible</p>
B B B <p>paragraph #5</p>
B B B <ul>
B B B B <li>Item #1</li>
B B B B <li>Item #2 to split <split id="split-3"/> here</li>
B B B B <li>Item #3</li>
B B B B <li>
B B B B B <ul>
B B B B B B <li>Item #4</li>
B B B B B B <li>Item #5 to <em>split <split id="split-4"/></em> here if possible</li>
B B B B B B <li>Item #6</li>
B B B B B </ul>
B B B B </li>
B B B </ul>
B B B <p>paragraph #6</p>
B B </content>
B </section>
</root>

The goal is to split the section on every <split> element (just like a page would break the flowing text anywhere in the structure).

Expected result :
<root>
 B  B  <section>
 B  B  B  <title>Title</title>
 B  B  B  <content>
 B  B  B  B  <p>paragraph #1</p>
 B  B  B  B  <p>paragraph #2 to split</p>
 B  B  B  </content>
 B  B  </section>
 B  B  <split id="split-1"/>
 B  B  <section>
 B  B  B  <title>Title</title>
 B  B  B  <content>
 B  B  B  B  <p>paragraph #3</p>
 B  B  B  B  <p>paragraph #4 <strong> to split</strong></p>
 B  B  B  </content>
 B  B  </section>
 B  B  <split id="split-2"/>
 B  B  <section>
 B  B  B  <title>Title</title>
 B  B  B  <content>
 B  B  B  B  <p><strong> here</strong> if possible</p>
 B  B  B  B  <p>paragraph #5</p>
 B  B  B  B  <ul>
 B  B  B  B  B  <li>Item #1</li>
 B  B  B  B  B  <li>Item #2 to split </li>
 B  B  B  B  </ul>
 B  B  B  </content>
 B  B  </section>
 B  B  <split id="split-3"/>
 B  B  <section>
 B  B  B  <title>Title</title>
 B  B  B  <content>
 B  B  B  B  <ul>
 B  B  B  B  B  <li> here</li>
 B  B  B  B  B  <li>Item #3</li>
 B  B  B  B  B  <li>
 B  B  B  B  B  B  <ul>
 B  B  B  B  B  B  B  <li>Item #4</li>
 B  B  B  B  B  B  B  <li>Item #5 to <em>split</em></li>
 B  B  B  B  B  B  </ul>
 B  B  B  B  B  </li>
 B  B  B  B  </ul>
 B  B  B  </content>
 B  B  </section>
 B  B  <split id="split-4"/>
 B  B  <section>
 B  B  B  <title>Title</title>
 B  B  B  <content>
 B  B  B  B  <ul>
 B  B  B  B  B  <ul>
 B  B  B  B  B  B  <li> here if possible</li>
 B  B  B  B  B  </ul>
 B  B  B  B  B  <li>Item #6</li>
 B  B  B  B  </ul>
 B  B  B  B  <p>paragraph #6</p>
 B  B  B  </content>
 B  B  </section>
 B  </root>

My idea was to iterate from 1 to the number of split elementsB + 1 and working on the section with tunnel params so I can test for each node if it's before / after / in betweenB (current) splits elements, and then decide to keep the node or not according to this position.

I already used this kind of solution on a similar problem, long time ago. So I'll give it a try thoughB I'm not not totally confident with it (because split elements can appear as inline content here).

Please let me know if you have ideas, if my solution is the right or wrong way to go?
Are there special design patterns for this kind of problem ?
And last, haveB you ever faced this kind of splittingB issue, any feedbackB welcome :)

Cheers,
Matthieu Ricaud-Dussarget