[xsl] Getting a list of node Text()

[Nicholas Orr <nick@xxxxxxxxxxx>]

G'day all,

I've got some XSLT that gets a nodes text value that works fine.  But  
the data I'm getting is changing a lot and I want to have a dynamic  
approach to listing all of the nodes I'm after instead of having to  
alter the XSLT each time.

Essentially I'm trying to get a <Calculation> node which will be a  
child node of the current one.  But the issue is that there will  
sometimes be one calculation node, and sometimes multiple nodes.  And  
they're not always just child nodes, they might be sub child nodes.   
So I might have for my path :

./Calculation

or

./Value/Calculation
./StartPosition/Calculation

or multiple Calculation nodes in multiple places.  My thought was  
that I'd set a variable and make it empty, then do a for-each  
descendant::Calculation loop to get each one, and "concat($calc,text 
())" them to the variable.

Does anyone know of an easier way?  The other issue I have is that if  
the node is empty, I want to ignore it, and each node should be  
separated by a return character.

Thanks,
Nick