XSLT: Add namespace to root element

Question

I need to change namespaces in the root element as follows:

input document:

<         


        

Answer 1

XSLT 2.0 isn't necessary to solve this problem.

Here is an XSLT 1.0 solution, which works equally well as XSLT 2.0 (just change the version attribute to 2.0):

 

 
  
   
  
 

 
   

      

      

      

      external
   
 

When the above transformation is applied on this XML document:

the wanted result is produced: