From ca721227517f2ad0f737f0fde18df588beb96c67 Mon Sep 17 00:00:00 2001
From: Parasaran <v.parasaran@gmail.com>
Date: Tue, 17 Dec 2024 23:32:42 +0530
Subject: [PATCH] fix 235221: Encode and decode markdown content to escape
 illegal chars

---
 extensions/markdown-language-features/preview-src/index.ts   | 5 ++++-
 .../src/preview/documentRenderer.ts                          | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/extensions/markdown-language-features/preview-src/index.ts b/extensions/markdown-language-features/preview-src/index.ts
index d7fa1f18d76..336245a1fdf 100644
--- a/extensions/markdown-language-features/preview-src/index.ts
+++ b/extensions/markdown-language-features/preview-src/index.ts
@@ -355,7 +355,10 @@ document.addEventListener('click', event => {
 
 window.addEventListener('load', () => {
 	const htmlParser = new DOMParser();
-	const markDownHtml = htmlParser.parseFromString(getData('data-md-content'), 'text/html');
+	const markDownHtml = htmlParser.parseFromString(
+		decodeURIComponent(getData('data-md-content')),
+		'text/html'
+	);
 	document.body.appendChild(markDownHtml.body);
 });
 
diff --git a/extensions/markdown-language-features/src/preview/documentRenderer.ts b/extensions/markdown-language-features/src/preview/documentRenderer.ts
index f2447532e00..13e709c765f 100644
--- a/extensions/markdown-language-features/src/preview/documentRenderer.ts
+++ b/extensions/markdown-language-features/src/preview/documentRenderer.ts
@@ -99,7 +99,7 @@ export class MdDocumentRenderer {
 					data-settings="${escapeAttribute(JSON.stringify(initialData))}"
 					data-strings="${escapeAttribute(JSON.stringify(previewStrings))}"
 					data-state="${escapeAttribute(JSON.stringify(state || {}))}"
-					data-md-content="${escapeAttribute(JSON.stringify(body.html))}">
+					data-md-content="${escapeAttribute(JSON.stringify(encodeURIComponent(body.html)))}">
 				<script src="${this._extensionResourcePath(resourceProvider, 'pre.js')}" nonce="${nonce}"></script>
 				${this._getStyles(resourceProvider, sourceUri, config, imageInfo)}
 				<base href="${resourceProvider.asWebviewUri(markdownDocument.uri)}">