bug#28621: Proposed patch for doc of posn-window and code of posn-set-point to handle frame arguments

[martin rudalics]

>>> !      (select-window (frame-selected-window (posn-window position))))
>>
>> Why should we select the selected-window on that frame in this case?
>>
>
> ​Because when position includes a window, the window is selected (the
> latter logic in this function).  So if position is in a window in another
> frame, shouldn't we select the window there?  We are trying to set point
> here
> based on a mouse position​, so the user must have moved his focus there.  I
> am
> looking for input on whether the logic is right.

(frame-selected-window (posn-window position)) might not be the window
under the mouse cursor.

martin