xemacs21-mule binary package in Ubuntu Bionic amd64

 XEmacs is a full fledged programming language with a mail reader,
 news reader, info browser, web browser, calendar, specialized editor
 for more programming languages and other formats than most people
 encounter in a lifetime, and much more.
 .
 This package contains the actual binary used to run XEmacs. It
 depends on the xemacs21-support package for lisp and etc files, and
 the xemacs21-bin package for supporting binaries. This binary has
 been compiled with support for mule, but no input extensions.
 .
 Mule is the extension to (x)emacs that allows for the display of
 non-European characters (for example Japanese and Korean characters).
 This version of the package is mainly useful for only the display and
 reading of international characters. It does not have any mechanism
 for entering non-European characters (see the xemacs21-mule-canna-wnn
 package for that).
 .
 This package actually contains one of the three xemacs binaries
 available. They are xemacs21-nomule, xemacs21-mule and
 xemacs21-mule-canna-wnn.

Source package