[R] Getting the argument list within a function

[Roger D. Peng]

Is there a way of getting the argument list of a function from within 
that function?  For example, something like

f <- function(x, y = 3) {
        fargs <- getFunctionArgList()
        print(fargs)  ## Should be `alist(x, y = 3)'
}
Thanks,
-roger
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