From 973195a131ebbff471c5e0179d1ac95181c9af3d Mon Sep 17 00:00:00 2001
From: yflory <yann.flory@xwiki.com>
Date: Thu, 25 Nov 2021 12:22:44 +0100
Subject: [PATCH] Fix TypeError in codemirror with code blocks

---
 www/code/orgmode.js | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/www/code/orgmode.js b/www/code/orgmode.js
index 942d141f2..0c46a7a20 100644
--- a/www/code/orgmode.js
+++ b/www/code/orgmode.js
@@ -2,6 +2,19 @@ define([
     'cm/lib/codemirror',
     'cm/addon/mode/simple'
 ], function (CodeMirror) {
+
+    // Hack to avoid breaking a document with ```__proto__ codeblock
+    CodeMirror.defineSimpleMode("__proto__", {
+        start: [ {regex: /.*/, token: "comment"} ],
+        env: [ {regex: /.*/, token: "comment"} ]
+    });
+    CodeMirror.registerHelper("fold", "__proto__", function(cm, start) {
+        return {
+            from: CodeMirror.Pos(0,0),
+            to: CodeMirror.Pos(0,0)
+        };
+    });
+
     CodeMirror.__mode = 'orgmode';
 
     var isEmpty = function (el, idx) {