Fix for cwlists on domains which begin with a dot

cwlists.py

@@ -81,10 +81,12 @@ def _add_cw_match_domains(item: {}, content: str, cw_text: str,
     the post content
     """
     matched = False
+
     for domain in item['domains']:
         if '.' in domain:
             first_section = domain.split('.')[0]
-            if len(first_section) < 4:
+            len_first_section = len(first_section)
+            if len_first_section in range(1, 4):
                 if '.' + domain in content or \
                    '/' + domain in content:
                     if cw_text:
@@ -116,6 +118,7 @@ def add_cw_from_lists(post_json_object: {}, cw_lists: {}, translate: {},
     if 'content' not in post_json_object['object']:
         if 'contentMap' not in post_json_object['object']:
             return
+
     cw_text: str = ''
     if post_json_object['object'].get('summary'):
         cw_text = post_json_object['object']['summary']

cwlists/ai_generated.json

@@ -3324,6 +3324,6 @@
         "www.ipv6.rs",
         "www.homediningkitchen.com",
         "www.psichologyanswers.com",
-        "www.umatechnology.org",
+        "www.umatechnology.org"
     ]
 }

tests.py

@@ -7628,6 +7628,26 @@ def _test_add_cw_lists(base_dir: str) -> None:
     assert post_json_object['object']['summary'] == \
         "Murdoch Press / Existing CW"
 
+    content = \
+        '<p>Wah wah-wah wah waaaah.</p><p><a ' + \
+        'href="https://www.ft.com/content/abcdef" target="_blank" ' + \
+        'rel="nofollow noopener" translate="no"><span class="invisible">' + \
+        'https://www.</span><span class="ellipsis">ft.com/content/abcdef' + \
+        '</span><span class="invisible">ghi</span></a></p>'
+    post_json_object = {
+        "object": {
+            "sensitive": True,
+            "summary": "Existing CW",
+            "content": content
+        }
+    }
+    add_cw_from_lists(post_json_object, cw_lists, translate,
+                      'Paywalled or registration only',
+                      system_language, languages_understood)
+    assert post_json_object['object']['sensitive'] is True
+    assert post_json_object['object']['summary'] == \
+        "Paywalled or Registration Only / Existing CW"
+
 
 def _test_valid_emoji_content() -> None:
     print('test_valid_emoji_content')