ignore doctype tag, test cdata tag

AlexVonB · AlexVonB · commit 129c4ef06067 · 2021-05-30T11:18:18.000+02:00
fixes #45
diff --git a/markdownify/__init__.py b/markdownify/__init__.py
@@ -1,4 +1,4 @@
-from bs4 import BeautifulSoup, NavigableString, Comment
+from bs4 import BeautifulSoup, NavigableString, Comment, Doctype
 import re
 import six
 
@@ -124,7 +124,7 @@ def is_nested_node(el):
 
         # Convert the children first
         for el in node.children:
-            if isinstance(el, Comment):
+            if isinstance(el, Comment) or isinstance(el, Doctype):
                 continue
             elif isinstance(el, NavigableString):
                 text += self.process_text(el)
diff --git a/tests/test_advanced.py b/tests/test_advanced.py
@@ -21,3 +21,8 @@ def test_code_with_tricky_content():
     assert md('<code>/home/</code><b>username</b>') == "`/home/`**username**"
     assert md('First line <code>blah blah<br />blah blah</code> second line') \
         == "First line `blah blah  \nblah blah` second line"
+
+
+def test_special_tags():
+    assert md('<!DOCTYPE html>') == ''
+    assert md('<![CDATA[foobar]]>') == 'foobar'
