[ESS] Error invoking R-mode using latest Debian ess_5.2.3-2

[Stephen Eglen]

 > I just installed the Debian package ess_5.2.3-2 and now get an error 
 > when invoking R-mode in xemacs from the xemacs_21.4.15-8 package. The 
 > message is
 > 
 > Symbol's function definition is void: replace-regexp-in-string

This may be an XEmacs issue; it works for me using XEmacs 21.4.13.
Can you see if the function replace-regexp-in-string is defined?  To
do this, type:

M-x describe-function RET replace-regexp-in-string RET

On my XEmacs it comes up with:
-----
`replace-regexp-in-string' is a compiled Lisp function
(replace-regexp-in-string REGEXP REPLACE STRING)

Documentation: 

Mimic GNU Emacs function replace-regexp-in-string with XEmacs'
replace-in-string
-----

Do you see something similar or does it tell you "no match" when you
press return?

Stephen