[rule34xyz] support URLs with 'www' subdomain (#8875)

gallery_dl/extractor/rule34xyz.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2024-2025 Mike Fährmann
+# Copyright 2024-2026 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -13,7 +13,7 @@ from .. import text, exception
 from ..cache import cache
 import collections
 
-BASE_PATTERN = r"(?:https?://)?rule34\.xyz"
+BASE_PATTERN = r"(?:https?://)?(?:www\.)?rule34\.xyz"
 
 
 class Rule34xyzExtractor(BooruExtractor):

test/results/rule34xyz.py

@@ -18,6 +18,12 @@ __tests__ = (
     "search_tags": "sfw",
 },
 
+{
+    "#url"     : "https://www.rule34.xyz/sfw",
+    "#comment" : "URL with 'www' subdomain (#8875)",
+    "#class"   : rule34xyz.Rule34xyzTagExtractor,
+},
+
 {
     "#url"  : "https://rule34.xyz/playlists/view/119",
     "#class": rule34xyz.Rule34xyzPlaylistExtractor,