question about deparse(substitute(...))

-----Original Message-----
From: r-help-bounces at r-project.org 
[mailto:r-help-bounces at r-project.org] On Behalf Of Sean Zhang
Sent: Thursday, January 13, 2011 4:37 PM
To: r-help at r-project.org
Subject: [R] question about deparse(substitute(...))

Dear R helpers:

I like to apply deparse(substitute()) on multiple arguments 
to collect the
names of the arguments into a character vector.
I used function test.fun as below. it works when there is 
only one input
argument. but it does not work for multiple arguements. can 
someone kindly
help?

test.fun <- function(...){deparse(substitute(...))}
test.fun(x) #this works
test.fun(x,y,z) # I like c('x','y','z') be the output, but 
cannot get it.

Thanks in advance.

-Sean

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