bug#47969: 28.0.50; Losing minibuffer focus in trying M-x command

[Gregory Heytings]

> > You mean your earlier
> >
> > > FWIW, I think we should instead temporarily disable 
> > > mouse-autoselect-window when a minibuffer is active.
> >
> > as in the untested below?
>
> Something like that (I didn't yet have time to test the patch).

I see what you mean, but that patch at least doesn't work; apparently with 
this recipe mouse-autoselect-window-select is never called.  And the 
problem is that between ESC and x minibuffer-depth is still = 0.

> My reasoning is simple: switching windows by a keyboard command or by 
> clicking the mouse is an intentional user action, for which he/she is 
> fully responsible.  By contrast, moving the mouse pointer can be 
> accidental, so disabling only it in these situations makes much more 
> sense than disabling window-switch entirely.

My patch does not disable window-switching entirely, an explicit mouse 
click works: ESC mouse-1 is undefined, but the window in which the click 
happens is selected.

After pressing ESC, keyboard commands do not do run what one would expect, 
e.g. C-x o does not run other-window but (in an Elisp buffer) eval-defun 
(i.e. C-M-x) followed by self-insert-command ('o').