> One reason is that XSLT modules are not very modular; when you combine 
>
them
> using include and import, this can cause all sorts of unexpected
effects 
> due
> to the fact that templates and variables have global scope.
The fact that "XSLT modules are not very modular" is bad.
I'd wished this
problem to be addressed without of context of this 
discussion.

> ... It's
nice not to have to build that stuff into your own code.

Provided there
were modularity in XSLT, all stuff could be isolated.
I can think of XProc as
of layer of program (like a driver).

On the other hand, when one looks at
XProc specification,
one may observe some similarities that both XSLT and
XProc have.
--
Vladimir Nesterovsky