From 6b0b46b917350553771946628f8e102d040d62b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=A0imon=20Brandner?= <simon.bra.ag@gmail.com>
Date: Wed, 10 Feb 2021 14:20:19 +0100
Subject: [PATCH] Fix duplication caused by highlighting
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Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>
---
 src/components/views/messages/TextualBody.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/components/views/messages/TextualBody.js b/src/components/views/messages/TextualBody.js
index e32f8b11e0..6b201f1b8e 100644
--- a/src/components/views/messages/TextualBody.js
+++ b/src/components/views/messages/TextualBody.js
@@ -118,6 +118,9 @@ export default class TextualBody extends React.Component {
                 setTimeout(() => {
                     if (this._unmounted) return;
                     for (let i = 0; i < codes.length; i++) {
+                        // If the code already has the hljs class we want to skip this.
+                        // This happens after the codeblock was edited.
+                        if (codes[i].className.includes("hljs")) continue;
                         this._highlightCode(codes[i]);
                     }
                 }, 10);