Fix #185 by always restoring hashed html blocks at the end of convers…

…ion.

Nested hashes don't get unravelled in `_form_paragraphs`

lib/markdown2.py

@@ -2638,9 +2638,12 @@ def _do_link_patterns(self, text):
 
     def _unescape_special_chars(self, text):
         # Swap back in all the special characters we've hidden.
+        hashmap = tuple(self._escape_table.items()) + tuple(self._code_table.items())
+        # html_blocks table is in format {hash: item} compared to usual {item: hash}
+        hashmap += tuple(tuple(reversed(i)) for i in self.html_blocks.items())
         while True:
             orig_text = text
-            for ch, hash in list(self._escape_table.items()) + list(self._code_table.items()):
+            for ch, hash in hashmap:
                 text = text.replace(hash, ch)
             if text == orig_text:
                 break

test/tm-cases/hash_html_blocks.html

@@ -0,0 +1,9 @@
+<div
+>
+<h3>Archons of the Colophon</h3>
+
+
+<p>by Paco Xander Nathan
+</p>
+
+</div>

test/tm-cases/hash_html_blocks.text

@@ -0,0 +1,6 @@
+<div
+>
+<h3>Archons of the Colophon</h3>
+<p>by Paco Xander Nathan
+</p>
+</div>