From 5bd00504bc0e7925591b6b05ee95644be38dd5e2 Mon Sep 17 00:00:00 2001
From: Anne van Kesteren <annevk@annevk.nl>
Date: Sat, 4 Oct 2025 12:11:13 +0200
Subject: [PATCH] Make attachShadow() use the global registry by default

This significantly improves the reuse of custom elements in different registries.

Tests: https://github.com/web-platform-tests/wpt/pull/55248.

Fixes #1407.
---
 dom.bs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dom.bs b/dom.bs
index e61c3fc0..a940d13c 100644
--- a/dom.bs
+++ b/dom.bs
@@ -7583,7 +7583,8 @@ are:
 <p>The <dfn method for=Element><code>attachShadow(<var>init</var>)</code></dfn> method steps are:
 
 <ol>
- <li><p>Let <var>registry</var> be <a>this</a>'s <a for=Element>custom element registry</a>.
+ <li><p>Let <var>registry</var> be <a>this</a>'s <a>node document</a>'s
+ <a for=Document>custom element registry</a>.
 
  <li>
   <p>If <var>init</var>["{{ShadowRootInit/customElementRegistry}}"] is non-null: