GNU bug report logs - #59141
28.1.90; Face :extend when all the line but trailing \n is invisible

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From: Juri Linkov <juri <at> linkov.net>
To: Kévin Le Gouguec <kevin.legouguec <at> gmail.com>
Cc: 59141 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>, Abdul-Lateef Haji-Ali <abdo.haji.ali <at> gmail.com>, yantar92 <at> posteo.net
Subject: bug#59141: 28.1.90; Face :extend when all the line but trailing \n is invisible
Date: Tue, 22 Nov 2022 09:52:40 +0200

> we could add ellipses in a more clean way: as a new value of the user
> option 'outline-minor-mode-use-buttons'.  So when it's customized to
> 'ellipsis', the ellipsis overlay will be created in a new pcase branch
> in outline--insert-button.

Unfortunately, this is not possible to do because of a bug
in overlay handling.  Here is a short test case:

(progn
  (insert "ab")
  (let ((o (make-overlay 1 2)))
    (overlay-put o 'after-string "!"))
  (let ((o (make-overlay 2 3)))
    (overlay-put o 'invisible t)))

The problem is that "!" from 'after-string' is not displayed,
even when it's on the text that is not invisible.

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