> The only way I can think of doing is in a 2-pass algorithm, first
> doing all the copying (more=replace), then going through it all 
> again
> and produce the report (mode=report), but I hope there is another 
> way
> (particularly one that avoids having to go through all dependency
> files twice)

> Could anyone give me a clue on this?

I had a similar need years ago, and tried to make xsl:message deal 
with it.  Eventually I needed xsl:message for other things (like 
throwing out "errors" and such), and just had to bite the bullet and 
go with two passes.