bug#56305: 29.0.50; 'yes-or-no-p' deselects minibuffer frame

[martin rudalics]

> Can you tell how inhibit-redisplay is related to the original recipe
> in this bug?  Specifically, at what point is inhibit-redisplay set in
> that recipe and by which code?

It's all explained here in gui_consider_frame_title:

      /* select-frame calls resize_mini_window, which could resize the
         mini-window and by that undo the effect of this redisplay
         cycle wrt minibuffer and echo-area display.  Binding
         inhibit-redisplay to t makes the call to resize_mini_window a
         no-op, thus avoiding the adverse side effects.  */

      /* The following was moved before the record_unwind_protect form
         below to inhibit redisplay also when restoring the selected
         window/frame: This avoids that resize_mini_window sizes back
         the minibuffer window of a temporarily selected frame.  See
         Bug#34317.  */
      specbind (Qinhibit_redisplay, Qt);

Obviously, gui_consider_frame_title should never even try to resize the
mini window in the first place.  The same holds for moving the frame's
focus.

martin