>I've played with reduce in VFP6.0, here is a simple test:
>

>lcStr=repl("A  ",5000000)
>lcStr=reduce(lcStr,"  ")
>?len(lcStr)

>
>Looks like it doesn't reduce correctly?

OK, so the limit is moved, and seems to depend on the actual length of the string; anyway, there still is some limit and it seems to be at 64K for the result, and 16M for the string passed. Try this:

lcStr='A   '
for i=1 to 40
	lcStr=lcStr+lcStr
	lcReduced=reduce(lcStr," ")
	?len(lcStr), len(lcReduced), occurs('A', lcReduced)
endf