bug#50256: thing-at-mouse

[Eli Zaretskii]

> From: martin rudalics <rudalics@gmx.at>
> Date: Wed, 1 Sep 2021 11:18:01 +0200
> Cc: 50256@debbugs.gnu.org
> 
> Using the position of point of the current buffer when WINDOW is
> specified doesn't make any sense.  Moreover the Elisp manual says that
> 
>    "The argument POSITION defaults to the current position of point in
>    WINDOW"
> 
> which doesn't make sense if point is taken from a buffer not shown in
> WINDOW.

That function works only with positions shown in some window, so why
do you say the above makes no sense?  The implementation emulates
display, so it must have a window to make layout decisions.

> So the fix should be implemented in Fpos_visible_in_window_p.

The snippet cited in the original message _was_ from
Fpos_visible_in_window_p.  But I don't understand what kind of fix did
you have in mind, perhaps because I don't understand how the original
problem reported by Juri happened in the first place.