Source script to separate environment in R, not the global environment

Question

Is there a way to source() a script in R such that it is attached as a parent to the global environment (.GlobalEnv)?

Curr

Answer 1

From the source documentation, the local argument can be an environment which determines where the sourced expressions are evaluated.

This suggests that you could create a new environment, run source passing this environment to local, then attach the environment to the search path.

Or you can use attach with what=NULL to create an empty environment, save the return value, and pass that to local in source:

tmp <- attach(what=NULL)
source('test.R', local=tmp)

or as a single line:

source('test.R', local=attach(NULL))