bug#47699: [PATCH] Improve completion-list-mode-map

[Gregory Heytings]

> > If you agreed with it, I would be pleased to add symmetry there.  I use 
> > M-c for both purposes locally:
> >
> > (define-key minibuffer-local-map (kbd "M-c") 'switch-to-completions)
> > (define-key completion-list-mode-map (kbd "M-c") 'other-window)
>
> I don't think other-window is the right command, because with some 
> window configurations it might land you in the wrong window.  It has to 
> be a command that lands you back in the mini-window.

In practice other-window works well there, but now that you mention it, I 
agree with you that it's not safe enough.  What about:

(defun switch-to-minibuffer ()
  "Select the minibuffer window."
  (interactive)
  (when (active-minibuffer-window)
    (select-window (active-minibuffer-window))))