grouping children of same name parents under one commo

Good afternoon.  I'm new to xsl, and need some advice on how to format a
document.  I'm looking to find all the tags with the same name, collect
their children and put them all under one common tag.  Part of the problem
is, I have no idea what the tag names will be.


Let's say the xml I want to transform looks like this:

<root>

  <bob>
    <someTag>content1</someTag>
  </bob>

  <bob>
    <someTag>content2</someTag>
  </bob>

  <sue>
    <someTag>content3</someTag>
  </sue>

  <warren>
    <someTag>content4</someTag>
  </warren>

  <warren>
    <someTag>content5</someTag>
  </warren>

</root>



I would like the output to be:



<root>

  <bob>
    <someTag>content1</someTag>
    <someTag>content2</someTag>
  </bob>

  <sue>
    <someTag>content3</someTag>
  </sue>

  <warren>
    <someTag>content4</someTag>
    <someTag>content5</someTag>
  </warren>

</root>


Again, I don't know the tag names ahead of time(Bob, Sue, and Warren are
just examples).  I'm not sure how to tell xsl that I want to:

1) compare the current node's name with its siblings' names.
2) if a name match is found, adopt the matched sibling's children. (matched
sibling can die now, how nice of me ;)
3) keep looking for more siblings with matching names, adopting their
children if more matches are found.
4) don't repeat steps 1-3 for matched siblings (not an issue if they were
killed in step 2 when their children were taken away).


Thanks for any help.  I'm having trouble accomplishing this, even tho I
know exactly what I want.



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