From ca2eaf5bcc9ea01e764f6088e37d74ec2be6e426 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rudolf=20Adamkovi=C4=8D?= <salutis@me.com>
Date: Fri, 7 Oct 2022 15:03:48 +0200
Subject: [PATCH] ox-html: Use MathJax 3 instead of 2.7

* lisp/ox-html.el (org-html-mathjax-options): WIP
* lisp/ox-html.el (org-html-mathjax-template): WIP
---
 lisp/ox-html.el | 51 +++++++++++++++++++++++++------------------------
 1 file changed, 26 insertions(+), 25 deletions(-)

diff --git a/lisp/ox-html.el b/lisp/ox-html.el
index 9b77e4f8d..c6242d4bc 100644
--- a/lisp/ox-html.el
+++ b/lisp/ox-html.el
@@ -1166,12 +1166,12 @@ See `format-time-string' for more information on its components."
 ;;;; Template :: Mathjax
 
 (defcustom org-html-mathjax-options
-  '((path "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS_HTML" )
-    (scale "100")
+  '((path "https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js")
+    (scale "1") ;; TODO: 0-1 AND NOT 0-100; NUMBER AND NOT STRING
     (align "center")
-    (font "TeX")
-    (linebreaks "false")
-    (autonumber "AMS")
+    (font "TeX") ;; TODO: NOT SUPPORTED
+    (linebreaks "false") ;; TODO: NOT SUPPORTED
+    (autonumber "ams") ;; TODO: NOW CALLED TAGS AND IN LOWERCASE
     (indent "0em")
     (multlinewidth "85%")
     (tagindent ".8em")
@@ -1244,27 +1244,28 @@ For further information about MathJax options, see the MathJax documentation:
 			     (const "right")))))
 
 (defcustom org-html-mathjax-template
-  "<script type=\"text/x-mathjax-config\">
-    MathJax.Hub.Config({
-        displayAlign: \"%ALIGN\",
-        displayIndent: \"%INDENT\",
-
-        \"HTML-CSS\": { scale: %SCALE,
-                        linebreaks: { automatic: \"%LINEBREAKS\" },
-                        webFont: \"%FONT\"
-                       },
-        SVG: {scale: %SCALE,
-              linebreaks: { automatic: \"%LINEBREAKS\" },
-              font: \"%FONT\"},
-        NativeMML: {scale: %SCALE},
-        TeX: { equationNumbers: {autoNumber: \"%AUTONUMBER\"},
-               MultLineWidth: \"%MULTLINEWIDTH\",
-               TagSide: \"%TAGSIDE\",
-               TagIndent: \"%TAGINDENT\"
-             }
-});
+  "<script>
+  window.MathJax = {
+    tex: {
+      ams: {
+        multlineWidth: '%MULTLINEWIDTH'
+      },
+      tags: '%AUTONUMBER',
+      tagSide: '%TAGSIDE',
+      tagIndent: '%TAGINDENT'
+    },
+    chtml: {
+      scale: %SCALE,
+      displayAlign: '%ALIGN',
+      displayIndent: '%INDENT'
+    },
+    svg: {
+      scale: %SCALE
+    }
+  };
 </script>
-<script src=\"%PATH\"></script>"
+
+<script id=\"MathJax-script\" async src=\"%PATH\"></script>"
   "The MathJax template.  See also `org-html-mathjax-options'."
   :group 'org-export-html
   :type 'string)
-- 
2.37.3