Add "feed" as something we look for in an url

Helps us find cat and girl's feed automatically. Also just try "/feed"
maybe it works?

cry/feed.py

@@ -664,14 +664,14 @@ def classify_links(links, baseuri) -> typing.Tuple[list[str], list[str]]:
     """
     baseuri = baseuri.lower()
 
-    local, remote = [], []
+    local, remote = set(), set()
     for link in links:
         if link.lower().startswith(baseuri):
-            local.append(link)
+            local.add(link)
         else:
-            remote.append(link)
+            remote.add(link)
 
-    return local, remote
+    return list(local), list(remote)
 
 
 def is_feed_link(link: str) -> bool:
@@ -687,18 +687,27 @@ def is_feed_link(link: str) -> bool:
 
 def is_XML_related_link(link: str) -> bool:
     link = link.lower()
-    return "rss" in link or "rdf" in link or "xml" in link or "atom" in link
+    return (
+        "rss" in link
+        or "rdf" in link
+        or "xml" in link
+        or "atom" in link
+        or "feed" in link
+    )
 
 
 async def check_feed(url: str) -> Feed | None:
     """Check to see if the given URL is a feed. If it is, return the feed,
     otherwise return None.
     """
+    LOG.debug(f"Checking {url}: checking...")
     meta = FeedMeta.from_url(url)
     result, meta = await fetch_feed(meta)
     if isinstance(result, Feed):
+        LOG.debug(f"Checking {url}: is a feed")
         return result
 
+    LOG.debug(f"Checking {url}: is not a feed")
     return None
 
 
@@ -738,6 +747,11 @@ async def feed_search(uri: str) -> list[Feed]:
 
     LOG.debug("No links, checking A tags...")
     local_links, remote_links = classify_links(parser.a_links, meta.url)
+    for link in local_links:
+        LOG.debug(f"  LOCAL  {link}")
+    for link in remote_links:
+        LOG.debug(f"  REMOTE {link}")
+
     outfeeds = await check_links(filter(is_feed_link, local_links))
     if len(outfeeds) > 0:
         return outfeeds
@@ -759,6 +773,7 @@ async def feed_search(uri: str) -> list[Feed]:
         "rss.xml",  # Dave Winer/Manila
         "index.xml",  # MT
         "index.rss",  # Slash
+        "feed",  # catandgirl.com and sometimes others.
     ]
     outfeeds = await check_links([urllib.parse.urljoin(meta.url, x) for x in suffixes])
     return outfeeds

pyproject.toml

@@ -1,3 +1,7 @@
+[build-system]
+requires = ["pdm-backend"]
+build-backend = "pdm.backend"
+
 [project]
 name = "cry"
 version = "0.1"