Hi,
I've got the following two versions of R on WinXP:
A) R Version 2.3.0 Under development (unstable) (2006-02-02 r37243)
B) R Version 2.3.0 Under development (unstable) (2006-03-27 r37579)
and a the following "test.R" script:
foo <- function(path, ...) { print(path) }
bar <- function(x, ...) foo(...)
wow <- function(x, ...) capture.output(foo(...))
bar(1, path=2)
print(wow(1, path=2))
With A, I get:
> source("test.R")
[1] 2
[1] "[1] 2"
But with B, I get
> source("test.R")
[1] 2
Error in print(path) : argument "path" is missing, with no default
Further debugging led me to the following test2.R script:
foo <- function(path, ...) { print(path) }
bar <- function(x, ...) foo(...)
wow <- function(x, ...) yaa(foo(...))
yaa <- function(...) substitute(list(...))
bar(1, path=2)
print(wow(1, path=2))
With A, I get
> source("test2.R")
[1] 2
list(foo(...))
But with B, I get
> source("test.R")
[1] 2
list(foo())
Note that '...' is missing in the latest version. I don't think this is wanted.
/Henrik
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