Display horizontal rulers in Org files as a full-width line

configuration.org

@@ -1290,6 +1290,25 @@ This emulates how Orgzly work with my current settings.
     (org-set-property "CREATED" timestamp)))
 #+end_src
 
+*** Display horizontal rulers as a full-width line
+
+From [[https://matrix.to/#/@suckless_shill:matrix.org][viz]] in the [[https://matrix.to/#/#org-mode:matrix.org][org-mode]] Matrix room.
+
+#+begin_src emacs-lisp
+(defun vz/org-fontify-horizontal-break ()
+  "Display Org’s horizontal break (-----) as a full-width horizontal line"
+  (push '("^[[:space:]]*\\(------*\\)\n"
+	  (0 (progn
+	       (put-text-property (match-beginning 1) (match-end 1)
+				  'display (make-string (- (match-end 1) (match-beginning 1)) ?\s))
+	       (put-text-property (match-beginning 1) (match-end 0)
+				  'face '(:strike-through t :extend t)))))
+	org-font-lock-extra-keywords)
+  (setq-local font-lock-extra-managed-props (cons 'display font-lock-extra-managed-props)))
+
+(add-hook 'org-font-lock-set-keywords-hook #'vz/org-fontify-horizontal-break)
+#+end_src
+
 ** Org Roam
 
 Let’s see if i can get my brain more organised this way…