bug#50256: thing-at-mouse

[Eli Zaretskii]

> Cc: juri@linkov.net, 50256@debbugs.gnu.org, larsi@gnus.org
> From: martin rudalics <rudalics@gmx.at>
> Date: Sun, 5 Sep 2021 11:39:06 +0200
> 
>  > Once again, the warning is an orthogonal issue.  I'm not opposed to
>  > displaying a warning in cases where the caller might have intended
>  > something else.  But let's please first fix the actual issue that
>  > started this thread, and that wasn't the lack of warning.
> 
> I probably don't understand the actual issue then.

The actual issue is that pos-visible-in-window-p and posn-at-point
produced unexpected results when the buffer shown in the selected
window was momentarily changed by with-current-buffer.