Re: Rmail: toggle between summary and message buffers

[Eli Zaretskii]

> From: Eric Abrahamsen <eric@ericabrahamsen.net>
> Date: Thu, 20 Jun 2019 21:31:53 -0700
> Cc: help-gnu-emacs@gnu.org, Robert Thorpe <rt@robertthorpeconsulting.com>
> 
> > What do you use instead of C-o ?
> 
> FWIW, I bind "M-o" to other-window globally

I use M-HOME and M-END, with this piece of code:

  (defun my-previous-window (arg)
    "Switch to previous window."
    (interactive "p")
    (other-window (- arg)))
  (global-set-key [M-home] 'my-previous-window)
  (global-set-key [M-end] 'other-window)