>> On Thu, 14 Oct 2010 , Ilya Shlyakhter <ilya_shl@alum.mit.edu> wrote:

   >> I think the solution is to do rx (I sure hate textual regexps) - which
   >> is on my list, but will likely be a while.

   > Here is an initial attempt at porting rx to xemacs:
   > http://www.broadinstitute.org/~ilya/rx.el

Thanks for the port!!!
   > Not fully tested so please test it.

I tested it under Xemacs 21.4,

    -  good news it compiles fine, since delete-dups is now
       defined.


    -  bad news org-freemind does not compile when
    (require 'rx) is used, error message is attached. 

Looks serious maybe Mike can say something.

Uwe