bug#61361: closed (cursor cannot be at the start of overlay that starts with a newline)

[GNU bug Tracking System]

Your message dated Mon, 4 Sep 2023 14:08:08 -0700
with message-id 
<CADwFkmnhT4kMV8uzhVRFiMpCAUKgx9WM5=k+MUthomfvgDtDTg@mail.gmail.com>
and subject line Re: bug#61361: cursor cannot be at the start of overlay that 
starts with a newline
has caused the debbugs.gnu.org bug report #61361,
regarding cursor cannot be at the start of overlay that starts with a newline
to be marked as done.

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help-debbugs@gnu.org.)


-- 
61361: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=61361
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--- Begin Message --- Subject: cursor cannot be at the start of overlay that starts with a newline Date: Tue, 7 Feb 2023 23:29:31 -0500

steps to reproduce:
;; test line
(if (and (boundp 'overlay) (overlayp overlay)) (delete-overlay overlay))
(setq overlay (make-overlay 1 2))
(overlay-put overlay 'display "\nhello")
;; same result if you do this intead
;; (overlay-put overlay 'display (propertize "\nhello" 'cursor 0))

cursor does not display in the first line.

--- End Message ---

> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#61361: cursor cannot be at the start of overlay that starts with a newline
>
>
>
>
> Date: 
>
> Mon, 4 Sep 2023 14:08:08 -0700
>
>
>
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> > tags 61361 wontfix
> > thanks
> >
> >> From: Xinyang Chen <chenxy@mit.edu>
> >> Date: Tue, 7 Feb 2023 23:29:31 -0500
> >>
> >> steps to reproduce:
> >> ;; test line
> >> (if (and (boundp 'overlay) (overlayp overlay)) (delete-overlay overlay))
> >> (setq overlay (make-overlay 1 2))
> >> (overlay-put overlay 'display "\nhello")
> >> ;; same result if you do this intead
> >> ;; (overlay-put overlay 'display (propertize "\nhello" 'cursor 0))
> >>
> >> cursor does not display in the first line.
> >
> > Emacs cannot do what you are asking because the newline leaves no
> > glyph on display.  So the display engine cannot place the cursor on
> > the newline as it does on other characters, which do have glyphs.
> >
> > This is a limitation of the 'cursor' property feature.  Sorry.
>
> Since this is a wontfix, I'm closing this bug report.
>
>
> --- End Message ---