Fix escaping GT-angles not working

Author: Crozzers

lib/markdown2.py

@@ -1320,7 +1320,11 @@ def _escape_special_chars(self, text: str) -> str:
                            .replace('_', self._escape_table['_'])
                 )
             else:
-                escaped.append(self._encode_backslash_escapes(token.replace('\\<', '&lt;')))
+                escaped.append(
+                    self._encode_backslash_escapes(
+                        token.replace('\\<', '&lt;').replace('\\>', '&gt;')
+                    )
+                )
             is_html_markup = not is_html_markup
         return ''.join(escaped)
 

test/markdowntest-cases/Backslash escapes.html

@@ -20,7 +20,7 @@
 
 <p>Right paren: )</p>
 
-<p>Greater-than: ></p>
+<p>Greater-than: &gt;</p>
 
 <p>Hash: #</p>
 

test/tm-cases/escaped_html_in_safe_mode.html

@@ -1 +1,2 @@
-<p>&lt;abc></p>
+<p>&lt;abc&gt;
+&lt;abc></p>

test/tm-cases/escaped_html_in_safe_mode.text

@@ -1 +1,2 @@
-\<abc\>
+\<abc\>
+\<abc>