[Rd] Identical copy of base function

[Matthew Dowle]

Hello,

Regarding this in R-devel/NEWS/New features :

o  ‘library(pkg)’ no longer warns about a conflict with a function from
‘package:base’ if the function is an identical copy of the base one but
with a different environment.

Why would one want an identical copy in a different environment? I'm
thinking I may be missing out on a trick here.

Matthew