findGlobals: Find Global Functions and Variables Used by a Closure
Description
Finds global functions and variables used by a closure.
Usage
findGlobals(fun, merge = TRUE)
Value
Character vector if merge is true; otherwise, a list with
functions and variables character vector components.
Character vectors are of length zero For non-closures.
Arguments
fun
function object; usually a closure.
merge
logical
Author
Luke Tierney
Details
The result is an approximation. R semantics only allow variables
that might be local to be identified (and event that assumes no use
of assign and rm).