Re: Identifying the face between STRETCH and right fringe.

[Robert Pluim <rpluim@gmail.com>]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Robert Pluim <rpluim@gmail.com>
>> Cc: emacs-devel@gnu.org
>> Date: Fri, 23 Nov 2018 14:25:15 +0100
>> 
>> Iʼm not sure I understand here: this is a non-default face, and itʼs
>> not being extended to the window edge. Based on what you say here
>> thatʼs normal, but X11 and Windows *donʼt* do it?
>
> No, it's the other way around: X11 and Windows *don't* extend the
> face, the NS build *does*.  Maybe I misunderstood what you said, but
> my interpretation was that you liked the NS behavior (which I think is
> a bug).

Iʼve managed to get the two mixed up: on NS I see the face extended,
on X11 I donʼt, and I prefer the X11 behaviour.

>> > So I'm puzzled by your preference.  Do you see a behavior
>> > like the one you fancy in any other similar situation?
>> 
>> Yes: on macOS, if I turn on hl-line-mode, then the highlighting is
>> only extended to the edge if point is not in the last line of the
>> buffer.
>
> Hl-Line mode explicitly highlights the entire line, so it's a small
> wonder you see the entire line highlighted in its color.  What happens
> at EOB could be a bug (or a feature) in hl-line, and is not related to
> the issue at hand in any way, shape or form, because hl-line.el does
> this:
>
>       (setq tmp t
> 	    b (line-beginning-position)
> 	    e (line-beginning-position 2)))
>     (if tmp
> 	(move-overlay overlay b e)
>
> Which intends to set the background of every character until the
> beginning of the next line.

And in fact thatʼs exactly what I see on all my platforms. As I said,
itʼs somewhat disconcerting, but at least itʼs consistent (and a
different issue).

Robert