Fix issue with empty raw blocks (#2587)

Author: facelessuser

docs/src/markdown/about/changelog.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## 10.14.3
+
+-   **FIX**: Blocks: An empty, raw block type should not cause an error.
+
 ## 10.14.2
 
 -   **FIX**: Blocks: Fix some corner cases with `md_in_html`.

pymdownx/__meta__.py

@@ -185,5 +185,5 @@ def parse_version(ver, pre=False):
     return Version(major, minor, micro, release, pre, post, dev)
 
 
-__version_info__ = Version(10, 14, 2, "final")
+__version_info__ = Version(10, 14, 3, "final")
 __version__ = __version_info__._get_canonical()

pymdownx/blocks/block.py

@@ -357,7 +357,8 @@ def _end(self, block):
         mode = self.on_markdown()
         add = self.on_add(block)
         if mode == 'raw' or (mode == 'auto' and self.is_raw(add)):
-            add.text = mutil.AtomicString(self.dedent(add.text))
+            text = add.text if add.text is not None else ''
+            add.text = mutil.AtomicString(self.dedent(text))
 
         self.on_end(block)
 

tests/test_extensions/test_blocks/test_html.py

@@ -14,6 +14,22 @@ class TestBlocksHTML(util.MdCase):
         }
     }
 
+
+    def test_raw_empty_block(self):
+        """Test that raw empty blocks are handled properly."""
+
+        self.check_markdown(
+            R'''
+            /// html | pre
+            ///
+            ''',
+            R'''
+            <pre></pre>
+            ''',
+            True
+        )
+
+
     def test_bad_tag(self):
         """Test bad HTML tag."""