Binary package “emacs-pgtk” in ubuntu mantic

GNU Emacs editor (with GTK+ Wayland GUI support)

 GNU Emacs is the extensible self-documenting text editor. This
 package contains a version of Emacs with a graphical user interface
 based on GTK+ for Wayland.
 .
 If you are using exclusively X11, install emacs-gtk instead. The
 PGTK port works less well than the standard GTK+ build in a number of
 respects.