XSLT Grouping Siblings

Question

I am trying to group sibling data in an XML file.

Given :

Answer 1

This is easy to do when the following is true (which I assume it is):

• all s within a are unique
• only the s right after a given belong to it
• there is no without a element before it

This XSLT 1.0 solution:

produces:

  
    
      team a v team b
      team c v team d
    
    
      team e v team f
    
    
      team g v team h
      team i v team j
      team k v team l
    
    

Note the use of an to match all s that belong to ("are preceded by") a given .

A slightly shorter but less obvious solution would be a modified identity transform: