From 9f063c717b7baf4b4e5e1aacbe31fef7ebb0489b Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Thu, 4 Mar 2021 06:19:44 -0500
Subject: [PATCH] Also CSS-escape tag name in element picker

Related issue:
- https://github.com/uBlockOrigin/uBlock-issues/issues/1519
---
 src/js/scriptlets/epicker.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/js/scriptlets/epicker.js b/src/js/scriptlets/epicker.js
index f6cd150e1..898882050 100644
--- a/src/js/scriptlets/epicker.js
+++ b/src/js/scriptlets/epicker.js
@@ -401,7 +401,7 @@ const cosmeticFilterFromElement = function(elem) {
     }
 
     // Tag name
-    const tagName = elem.localName;
+    const tagName = CSS.escape(elem.localName);
 
     // Use attributes if still no selector found.
     // https://github.com/gorhill/uBlock/issues/1901