[R] Names of objects passed as ... to a function?

[Gavin Simpson]

Dear list,

I have a function whose first argument is '...'. Each element of '...'
is a data frame, and there will be at least 2 data frames in '...'. The
function processes each of the data frames in '...' and returns a list,
whose components are the processed data frames. I would like to name the
components of this returned list with the names of the original data
frames. 

Normally I'd use deparse(substitute()) to do this, but here I do not
know the appropriate argument to run deparse(substitute()) on, and doing
this on ... only returns a single "name":

> foo <- function(...)
+                 deparse(substitute(...))
> dat1 <- rnorm(10)
> dat2 <- runif(10)
> foo(dat1, dat2)
[1] "dat1"

Can anyone suggest to me a way to get the names of objects passed as
the ... argument of a function?

TIA

G
-- 
%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
Gavin Simpson                     [t] +44 (0)20 7679 0522
ECRC                              [f] +44 (0)20 7679 0565
UCL Department of Geography
Pearson Building                  [e] gavin.simpsonATNOSPAMucl.ac.uk
Gower Street
London, UK                        [w] http://www.ucl.ac.uk/~ucfagls/
WC1E 6BT                          [w] http://www.freshwaters.org.uk/
%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%