Tags: patch etc/NEWS: *** New commands 'split-root-window-below' and 'split-root-window-right'. These commands split the root window in two, and are bound to 'C-x w 2' and 'C-x w 3', respectively. 0. emacs -Q 1. (setq split-window-keep-point nil) 2. C-x w 2 3. C-x w 2 Debugger entered--Lisp error: (wrong-type-argument stringp nil) split-window-below(nil #) split-root-window-below(nil) funcall-interactively(split-root-window-below nil) command-execute(split-root-window-below)