[ESS] Symbol's function definition is void: regexp-opt

Stephen Eglen S.J.Eglen at damtp.cam.ac.uk
Tue Sep 27 11:53:29 CEST 2005

First, John, thanks very much for the backtrace -- this helps us debug

 > I'm having a little trouble getting ESS to work on a windows machine.
 > Xemacs 21.5.17
 > ESS 5.2.10
 > R-2.1.1
 > Symbol's function definition is void: regexp-opt

regexp-opt is a function that exists in Gnu Emacs, and seems to be
okay too in XEmacs 21.4.13

A similar report for AUC TeX was made last April:

so the solution seems to be install either the xemacs-base package or
the sumo tarball to get the regexp-opt functionality in your xemacs.


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