Re: Allowing point to be outside the window?

[Po Lu]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Po Lu <luangruo@yahoo.com>
>> Cc: dick.r.chiang@gmail.com,  emacs-devel@gnu.org
>> Date: Sun, 05 Dec 2021 17:31:03 +0800
>> 
>> >> Also, where should I put the code to test if cursor is invisible?  I
>> >> think it should be after the label force_start, as forcing the start
>> >> could potentially adjust point to be inside the window.
>> >
>> > It goes back to the same question I asked above: why do you need to
>> > know that point is outside of the window? for what purposes?
>> >
>> > IOW, why not just let redisplay do its thing, without bothering to
>> > bring point into the window, when that is allowed?
>> 
>> I need to erase the phys cursor and to tell display_and_set_cursor to
>> not draw it: otherwise, the ghost of the cursor remains on-screen even
>> after point is moved out.

> Which probably means you need to put the code which determines whether
> point is inside or outside of the window in update_window or
> thereabouts?

Thanks.