[xenforo] support '/#post-ID' URLs

gallery_dl/extractor/xenforo.py

@@ -283,7 +283,7 @@ BASE_PATTERN = XenforoExtractor.update({
 class XenforoPostExtractor(XenforoExtractor):
     subcategory = "post"
     pattern = (BASE_PATTERN + r"(/(?:index\.php\?)?threads"
-               r"/[^/?#]+/post-|/posts/)(\d+)")
+               r"/[^/?#]+/#?post-|/posts/)(\d+)")
     example = "https://simpcity.cr/threads/TITLE.12345/post-54321"
 
     def posts(self):

test/results/atfforum.py

@@ -52,6 +52,12 @@ __tests__ = (
     },
 },
 
+{
+    "#url"     : "https://www.allthefallen.moe/forum/index.php?threads/final-fantasy-xiv.57090/#post-21765744",
+    "#category": ("xenforo", "atfforum", "post"),
+    "#class"   : xenforo.XenforoPostExtractor,
+},
+
 {
     "#url"     : "https://www.allthefallen.moe/forum/index.php?threads/final-fantasy-xiv.57090/",
     "#category": ("xenforo", "atfforum", "thread"),