From 50daf5cb15c6df6ffcf8368be624c5dc500400de Mon Sep 17 00:00:00 2001
From: Gijs Kruitbosch <gijskruitbosch@gmail.com>
Date: Thu, 24 Apr 2025 22:56:11 +0000
Subject: [PATCH] Bug 1959298 - improve sync entrypoint handling, r=markh

Differential Revision: https://phabricator.services.mozilla.com/D245039
---
 browser/components/preferences/sync.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/browser/components/preferences/sync.js b/browser/components/preferences/sync.js
index dcc779d6c6cc..fa1d432625a0 100644
--- a/browser/components/preferences/sync.js
+++ b/browser/components/preferences/sync.js
@@ -439,10 +439,10 @@ var gSyncPane = {
   },
 
   _getEntryPoint() {
-    let params = new URLSearchParams(
-      document.URL.split("#")[0].split("?")[1] || ""
-    );
-    return params.get("entrypoint") || "preferences";
+    let params = URL.fromURI(document.documentURIObject).searchParams;
+    let entryPoint = params.get("entrypoint") || "preferences";
+    entryPoint = entryPoint.replace(/[^-.\w]/g, "");
+    return entryPoint;
   },
 
   openContentInBrowser(url, options) {