[ESS] Using R and ess-directory

[Alexander Stoddard]

Greetings,

I am using R 2.3.1 with ESS 5.3.3 in GNU emacs 21.2 running under Mac  
OS 10.4.

I am hoping to use a customization as described in section 7.8 of the  
manual, "Names and locations of dump files", to set the ess-source- 
directory like so:

(setq ess-source-directory
            (lambda ()
               (concat ess-directory "Src/")))


Reading section 3.5 "Changing the startup actions" makes me expect  
the default behavior (with ess-ask-for-ess-directory set to "t") to  
set the value of ess-directory. However it seems that ess-directory  
is still nil after starting R with "M-R". (I note that a variable  
called "default-directory" is set to directory where I start R).

Do I need to set ess-directory manually or is something wrong?

Many thanks,
Alex Stoddard