Unescape backslash escaped TOC token names

Fixes Python-Markdown#1360.

Author: waylan

docs/change_log/index.md

@@ -7,6 +7,7 @@ Python-Markdown Change Log
 
 * Add a special case for initial 's to smarty extension (#1305).
 * Unescape any backslash escaped inline raw HTML (#1358).
+* Unescape backslash escaped TOC token names (#1360).
 
 March 23, 2023: version 3.4.3 (a bug-fix release).
 

markdown/extensions/toc.py

@@ -289,10 +289,10 @@ def run(self, doc):
                     toc_tokens.append({
                         'level': int(el.tag[-1]),
                         'id': el.attrib["id"],
-                        'name': stashedHTML2text(
+                        'name': unescape(stashedHTML2text(
                             code_escape(el.attrib.get('data-toc-label', text)),
                             self.md, strip_entities=False
-                        )
+                        ))
                     })
 
                 # Remove the data-toc-label attribute as it is no longer needed

tests/test_syntax/extensions/test_toc.py

@@ -442,6 +442,23 @@ def test_escaped_char_in_id(self):
         self.assertMarkdownRenders(
             r'# escaped\_character',
             '<h1 id="escaped_character">escaped_character</h1>',
+            expected_attrs={
+                'toc': (
+                    '<div class="toc">\n'
+                      '<ul>\n'                                                           # noqa
+                        '<li><a href="#escaped_character">escaped_character</a></li>\n'  # noqa
+                      '</ul>\n'                                                          # noqa
+                    '</div>\n'                                                           # noqa
+                ),
+                'toc_tokens': [
+                    {
+                        'level': 1,
+                        'id': 'escaped_character',
+                        'name': 'escaped_character',
+                        'children': []
+                    }
+                ]
+            },
             extensions=['toc']
         )