available in a XEmacs-without-MULE.
(cond ((featurep 'xemacs)
(if (or (featurep 'mule) (featurep 'file-coding))
(require 'pces-xfc)
(cond ((featurep 'xemacs)
(if (or (featurep 'mule) (featurep 'file-coding))
(require 'pces-xfc)
))
((featurep 'mule)
(if (>= emacs-major-version 20)
))
((featurep 'mule)
(if (>= emacs-major-version 20)