cross port importlib-metadata PR GH-76 (GH-13903)

https://gitlab.com/python-devs/importlib_metadata/merge_requests/76
(cherry picked from commit 65e5860)

Co-authored-by: Anthony Sottile <[email protected]>

Author: miss-islington

Lib/importlib/metadata/__init__.py

@@ -89,6 +89,8 @@ def _from_config(cls, config):
     @classmethod
     def _from_text(cls, text):
         config = ConfigParser()
+        # case sensitive: https://stackoverflow.com/q/1611799/812183
+        config.optionxform = str
         try:
             config.read_string(text)
         except AttributeError:  # pragma: nocover

Lib/test/test_importlib/data/example-21.12-py3-none-any.whl

@@ -26,6 +26,8 @@ def test_zip_entry_points(self):
         scripts = dict(entry_points()['console_scripts'])
         entry_point = scripts['example']
         self.assertEqual(entry_point.value, 'example:main')
+        entry_point = scripts['Example']
+        self.assertEqual(entry_point.value, 'example:main')
 
     def test_missing_metadata(self):
         self.assertIsNone(distribution('example').read_text('does not exist'))