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bug#73175: 30.0.60; toggling emacs-news-view-mode doesn't remove buttons


From: Robert Pluim
Subject: bug#73175: 30.0.60; toggling emacs-news-view-mode doesn't remove buttons
Date: Tue, 24 Sep 2024 17:59:23 +0200

>>>>> On Tue, 24 Sep 2024 15:25:14 +0300, Eli Zaretskii <eliz@gnu.org> said:

    >> Cc: 73175@debbugs.gnu.org
    >> From: Robert Pluim <rpluim@gmail.com>
    >> Date: Tue, 24 Sep 2024 11:29:45 +0200
    >> 
    >> Hmm, `buttonize-region' isnʼt in the elisp manual. Iʼm assuming
    >> emacs-30 is still open for documentation changes

    Eli> Yes, thanks.

OK. Done.

Iʼve just remembered that button.el can use either overlays or text
properties to make buttons, so `unbuttonize-region' should look like
this:

(defun unbuttonize-region (start end)
  "Remove all the buttons between START and END.
This removes both text-property and overlay based buttons."
  (dolist (o (overlays-in start end))
    (when (overlay-get o 'button)
      (delete-overlay o)))
  (with-silent-modifications
    (remove-text-properties start end
                            (button--properties nil nil nil))
    (add-face-text-property start end
                            'button nil)))


Robert
-- 





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