bug#32825: 27.0.50; Deterministic window management

[martin rudalics]

> I only added display-buffer-below-selected to pop-to-buffer
> of "*Backtrace*" after display-buffer-in-previous-window,
> and in `emacs -Q` with 3 windows where the bottom window is
> very low, subsequent errors are displayed in different windows.

Like this

              (pop-to-buffer
               debugger-buffer
               `((display-buffer-reuse-window
                  display-buffer-in-previous-window
                  display-buffer-below-selected)
                 . (,(when (and (window-live-p debugger-previous-window)
                                (frame-visible-p
                                 (window-frame debugger-previous-window)))
                       `(previous-window . ,debugger-previous-window)))))

I presume.  This will, in the first invocation, make a new window below
the selected one or reuse such a window because there is no previous
window.  Later on, that window gets reused here as expected,
regardless of whether the frame is wide or not.  With emacs -Q, at
least.  Maybe you have additional customizations or changes at work?

martin