R help - Aug 2008 - trying to mimic page 70 of Software for Data Analysis

I was trying to do what is on page 70 of John Chambers' new book namely 
using trace to invoke the browser by doing

trace(zapsmall, edit = TRUE)

but , typing above at an R prompt, I get

  trace(zapsmall, edit=TRUE)
sh: EMACS: command not found
Error in edit(name, file, title, editor) :
   problem with running editor EMACS

I looked in the archives but maybe it's a problem with the keywords I 
was using. If anyone could tell me what I need to do, it would be great. 
I'm thinking that I need to put something in my .Rprofile but I'm not 
sure what.  Thanks.

Oh, I use linux and my sessionInfo is below and I am using  GNU Emacs 
22.1.1. I usually use ESS and EMACS together but for this I figured it 
would be simpler to start from the R-prompt so that I was aligned with 
John's book as much as possible.

 
#===========================================================================
sessionInfo()
R version 2.7.0 (2008-04-22)
i686-redhat-linux-gnu

locale:
 
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=C;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C

attached base packages:
[1] datasets  utils     stats     graphics  grDevices methods   base

other attached packages:
  [1] gsubfn_0.3-3       proto_0.3-8        latticeExtra_0.4-1 
RColorBrewer_1.0-2 lattice_0.17-7     faraway_1.0.3      nnet_7.2-42 
car_1.2-8          reshape_0.8.0
[10] zoo_1.5-3          chron_2.3-22       MASS_7.2-42

loaded via a namespace (and not attached):
[1] grid_2.7.0

on 08/17/2008 07:15 PM markleeds at verizon.net wrote:
> I was trying to do what is on page 70 of John Chambers' new book namely
> using trace to invoke the browser by doing
> 
> trace(zapsmall, edit = TRUE)
> 
> but , typing above at an R prompt, I get
> 
>  trace(zapsmall, edit=TRUE)
> sh: EMACS: command not found
> Error in edit(name, file, title, editor) :
>   problem with running editor EMACS
<snip>

Mark,

Take a look at:

  getOption("editor")

and see what it returns.  More than likely "EMACS" from what I see
above.

It should be in all lower case. That is 'emacs'.

Take a look at your .Rprofile or perhaps at the 'EDITOR' or
"VISUAL'
shell variables to see where you have this set and edit accordingly.
See ?edit for more information.

Enjoy the book. My copy came just before I left for useR! and I have not
had a chance to read it yet.

Regards,

Marc Schwartz