bug#26513: 25.2; pop-up-frames and *Completions* buffer

[martin rudalics]

> I also tried Martin's suggestion of removing the
> (select-window) call but that didn't get rid of the error for me.

Evaluating with emacs -Q

(add-to-list 'special-display-buffer-names '("*Completions*" foo))
(setq w32-grab-focus-on-raise  nil)

(defun foo (buffer &optional args)
  (interactive)
  (let* ((mini-win  (active-minibuffer-window))
         (mini-frame (window-frame mini-win))
         (window
          (select-window
           (funcall special-display-function buffer args)))
         (frame (window-frame window)))
    (raise-frame frame)
    (redirect-frame-focus frame mini-frame)
    window))

and typing

C-h f set- TAB

gets me a new frame with input focus.  Evaluating with emacs -Q

(add-to-list 'special-display-buffer-names '("*Completions*" foo))
(setq w32-grab-focus-on-raise  nil)

(defun foo (buffer &optional args)
  (interactive)
  (let* ((mini-win  (active-minibuffer-window))
         (mini-frame (window-frame mini-win))
         (window
          (funcall special-display-function buffer args))
         (frame (window-frame window)))
    (raise-frame frame)
    (redirect-frame-focus frame mini-frame)
    window))

and typing

C-h f set- TAB

gets me a new frame with input focus in the old frame.

Verified with Emacs 25 and 26 under Debian GTK+ and Windows XP.

martin