bug#31975: Emacs NS port `M-x customize` Mouse Autoselect Window (point-to-focus) has no effect

[Van L <van@scratch.space>]

> On macOS?

Emacs 26.1 NS port is on Apple Mac OS.

> this is outside of Emacs, right?

There is the chance of the following call to work, no?

  `defaults write org.gnu.Emacs FocusFollowsMouse -bool true`

If not, why not one day in the far off distant future.

From what I can tell "M-x report-emacs-bug” needs 
email set in Emacs and a look at Gnus involves putting 
cleartext password on a one line setting

> 
>> #+NAME: `M-x customize` Mouse Autoselect Window
>> #+BEGIN_EXAMPLE
>>   Non-nil means autoselect window with mouse pointer. Hide
>>   If nil, do not autoselect windows.
>>   A positive number means delay autoselection by that many seconds: a
>>   window is autoselected only after the mouse has remained in that
>>   window for the duration of the delay.
>>   A negative number has a similar effect, but causes windows to be
>>   autoselected only after the mouse has stopped moving.  (Because of
>>   the way Emacs compares mouse events, you will occasionally wait twice
>>   that time before the window gets selected.)
>>   Any other value means to autoselect window instantaneously when the
>>   mouse pointer enters it.
>> 
>>   Autoselection selects the minibuffer only if it is active, and never
>>   unselects the minibuffer if it is active.
>> 
>>   When customizing this variable make sure that the actual value of
>>   ‘focus-follows-mouse’ matches the behavior of your window manager.
>> 
>> #+END_EXAMPLE
> 
> And how is this part relevant?

It is the setting that takes no effect 
the perceived bug that does not work as 
expected and desired, which is the cause
for this bug#31975 report.