From 3a2bb625190488b18c1486e51a1dc8fa465c14b4 Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Sat, 14 Jun 2025 09:26:27 -0400
Subject: [PATCH] Improve `trusted-set-cookie` scriptlet

Ability to use regex value for `, domain, value` vararg.

Related discussion:
https://github.com/uBlockOrigin/uAssets/commit/afc6ff52ff2ac886b55cbd4702149f61d33900ec#commitcomment-160035082
---
 src/js/resources/cookie.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/js/resources/cookie.js b/src/js/resources/cookie.js
index 517fa9c04..d96f4ab46 100644
--- a/src/js/resources/cookie.js
+++ b/src/js/resources/cookie.js
@@ -135,7 +135,15 @@ export function setCookieFn(
 
     if ( trusted ) {
         if ( options.domain ) {
-            cookieParts.push(`; domain=${options.domain}`);
+            let domain = options.domain;
+            if ( /^\/.+\//.test(domain) ) {
+                const reDomain = new RegExp(domain.slice(1, -1));
+                const match = reDomain.exec(document.location.hostname);
+                domain = match ? match[0] : undefined;
+            }
+            if ( domain ) {
+                cookieParts.push(`; domain=${domain}`);
+            }
         }
         cookieParts.push('; Secure');
     } else if ( /^__(Host|Secure)-/.test(name) ) {