Subject: Re: bug#50256: thing-at-mouse

From: Juri Linkov <[email-masked]>
Date: Wed, 01 Sep 2021 18:42:35 +0300

>> So maybe this fix should be implemented in Fpos_visible_in_window_p,
>> i.e. at the end of this code
>>
>>    if (EQ (pos, Qt))
>>      posint = -1;
>>    else if (!NILP (pos))
>>      posint = fix_position (pos);
>>    else if (w == XWINDOW (selected_window))
>>      posint = PT;
>>    else
>>      posint = marker_position (w->pointm);
>
> 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.  So the fix should be implemented in Fpos_visible_in_window_p.

Actually, WINDOW is not specified, but defaults to the selected window.
But still you point is valid: using the position of point of the current buffer
for the selected window doesn't make sense.

>> it should get position from the selected window's buffer?
>
> I don't understand this last sentence though.

I meant to set posint to (window-point), but written in C.