From 64a756cc0482429b52d6e005e8fb0848e58ed65c Mon Sep 17 00:00:00 2001
From: Elian Doran <contact@eliandoran.me>
Date: Mon, 17 Nov 2025 17:34:52 +0200
Subject: [PATCH] fix(share): mermaid breaking in share (closes #7765)

---
 apps/server/src/share/content_renderer.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/apps/server/src/share/content_renderer.ts b/apps/server/src/share/content_renderer.ts
index 338ba07ae..b636b4ac8 100644
--- a/apps/server/src/share/content_renderer.ts
+++ b/apps/server/src/share/content_renderer.ts
@@ -325,6 +325,11 @@ function renderText(result: Result, note: SNote | BNote) {
 
         // Apply syntax highlight.
         for (const codeEl of document.querySelectorAll("pre code")) {
+            if (codeEl.classList.contains("language-mermaid") && note.type === "text") {
+                // Mermaid is handled on client-side, we don't want to break it by adding syntax highlighting.
+                continue;
+            }
+
             const highlightResult = highlightAuto(codeEl.innerText);
             codeEl.innerHTML = highlightResult.value;
             codeEl.classList.add("hljs");