From 29d21ea6281603fc783fd99c6f0420eef2a6ca81 Mon Sep 17 00:00:00 2001
From: Bastien Guerry <bzg@gnu.org>
Date: Mon, 26 Apr 2021 14:23:43 +0200
Subject: [PATCH] Revert "ox-html.el: Use classList and put in the public
 domain"

This reverts commit 47105413657dd4986c2402b6250f06e56530b644.
---
 lisp/ox-html.el | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/lisp/ox-html.el b/lisp/ox-html.el
index 52f300fe7..565040794 100644
--- a/lisp/ox-html.el
+++ b/lisp/ox-html.el
@@ -233,23 +233,25 @@ property on the headline itself.")
 
 (defconst org-html-scripts
   "<script type=\"text/javascript\">
-// @license magnet:?xt=urn:btih:e95b018ef3580986a04669f1b5879592219e2a7a&dn=public-domain.txt Public Domain
+// @license magnet:?xt=urn:btih:1f739d935676111cfff4b4693e3816e664797050&amp;dn=gpl-3.0.txt GPL-v3-or-Later
 <!--/*--><![CDATA[/*><!--*/
      function CodeHighlightOn(elem, id)
      {
        var target = document.getElementById(id);
        if(null != target) {
-         elem.classList.add(\"code-highlighted\");
-         target.classList.add(\"code-highlighted\");
+         elem.cacheClassElem = elem.className;
+         elem.cacheClassTarget = target.className;
+         target.className = \"code-highlighted\";
+         elem.className   = \"code-highlighted\";
        }
      }
      function CodeHighlightOff(elem, id)
      {
        var target = document.getElementById(id);
-       if(null != target) {
-         elem.classList.remove(\"code-highlighted\");
-         target.classList.remove(\"code-highlighted\");
-       }
+       if(elem.cacheClassElem)
+         elem.className = elem.cacheClassElem;
+       if(elem.cacheClassTarget)
+         target.className = elem.cacheClassTarget;
      }
     /*]]>*///-->
 // @license-end