call as a substitute for macros or functional programming?

I have code that I'm using with various small modifications; at the moment I do 
this by copying, pasting and editing.  In other languages I could avoid this 
by passing functions into functions or using a macro/template system.

It looks as if call/n will give me something like functional programming, 
e.g.,
silly(Src, Dest, Op) :- call(Op, Src, Dest).

?- silly(path([ostempserver1]), S, content_for).
gives the same result as
?- content_for(path([ostempserver1]), D).

Is this the right approach?  Are there others I should consider?

Thanks.