Anyone not using a space-cadet or Symbolics keyboard could have remapped the mouse buttons to Ctrl and Meta to avoid Emacs pinky, but I still find it hard to be

Anyone not using a space-cadet or Symbolics keyboard could have remapped the mouse buttons to Ctrl and Meta to avoid Emacs pinky, but I still find it hard to believe that GNUmacs prior to the rise of Lucid/XEmacs had any real mouse support at all.