GNU bug report logs - #61361
cursor cannot be at the start of overlay that starts with a newline

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Message #33 received at 61361-done <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefankangas <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Xinyang Chen <chenxy <at> mit.edu>, 61361-done <at> debbugs.gnu.org
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 <at> gnu.org> writes:

> tags 61361 wontfix
> thanks
>
>> From: Xinyang Chen <chenxy <at> 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.

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