From 7af63051996a25d76806b550750d60dc4252e77d Mon Sep 17 00:00:00 2001
From: silverwind <me@silverwind.io>
Date: Thu, 1 Feb 2024 18:48:50 +0100
Subject: [PATCH 1/2] Strip trailing newline in markdown code copy

Fixes: https://github.com/go-gitea/gitea/issues/29012
---
 web_src/js/markup/codecopy.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/web_src/js/markup/codecopy.js b/web_src/js/markup/codecopy.js
index a12802ef73479..79f038ae5096b 100644
--- a/web_src/js/markup/codecopy.js
+++ b/web_src/js/markup/codecopy.js
@@ -13,7 +13,8 @@ export function renderCodeCopy() {
 
   for (const el of els) {
     const btn = makeCodeCopyButton();
-    btn.setAttribute('data-clipboard-text', el.textContent);
+    // remove final trailing newline introduced during HTML rendering
+    btn.setAttribute('data-clipboard-text', el.textContent.replace(/\r?\n$/, ''));
     el.after(btn);
   }
 }

From d01977bb3e8f33fdaf50f5d5a7ebb89fb0e5a46b Mon Sep 17 00:00:00 2001
From: silverwind <me@silverwind.io>
Date: Thu, 1 Feb 2024 18:51:06 +0100
Subject: [PATCH 2/2] safeguard against null textContent

---
 web_src/js/markup/codecopy.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/web_src/js/markup/codecopy.js b/web_src/js/markup/codecopy.js
index 79f038ae5096b..078d741253860 100644
--- a/web_src/js/markup/codecopy.js
+++ b/web_src/js/markup/codecopy.js
@@ -12,6 +12,7 @@ export function renderCodeCopy() {
   if (!els.length) return;
 
   for (const el of els) {
+    if (!el.textContent) continue;
     const btn = makeCodeCopyButton();
     // remove final trailing newline introduced during HTML rendering
     btn.setAttribute('data-clipboard-text', el.textContent.replace(/\r?\n$/, ''));