debian unstable update and emacs looses R

[Stephen Eglen]

 > I've updated my debian linux unstable this week. After the update 
 > everything is fine except for emacs not being able to open an R session, 
 > when I type M-x R , I get a [No match] reply in the minibuffer. R 
 > installation is fine (i.e. typing R in bash starts R normally) and I've 
 > also tried running emacs as root but the problem is still there.
 > Emacs version is 21.3.1
 > BTW with other programs (e.g. M-x maxima) works fine so it seems to be 
 > an R only problem.

Has ess been loaded - it seems not?  To see if it has, do "C-h v
features" and see if ess-site is in the list.

If not, try 
"M-x locate-library ess-site" to see if Emacs can find ess-site.  If
it can find the lib, but it hasn't been loaded, do 
"M-x load-library ess-site"

and try M-x R again.

Stephen