Subject: bug#66166: 30.0.50; [PATCH] Consider outline-heading-end-regexp in outline-font-lock-keywords

From: Eli Zaretskii <[email-masked]>
Date: Sat, 23 Sep 2023 22:01:20 +0300

> Cc: [email-masked]
> From: Juri Linkov <[email-masked]>
> Date: Sat, 23 Sep 2023 20:33:37 +0300
> 
> But when collapsed, changes in the display engine are required
> to support the extend attribute over the ellipsis (bug#65896).

Changes that no one could yet define in a way that doesn't break other
uses of faces.  So it isn't yet established that changes in the
display engine are required, or even possible.