remove urllib.parse copy

CHANGES.rst

@@ -5,6 +5,8 @@ Version 3.0.0
 
 Unreleased
 
+-   Remove previously deprecated code. :pr:`2768`
+
 
 Version 2.3.8
 -------------
@@ -1796,8 +1798,8 @@ Version 0.9.2
 
 (bugfix release, released on July 18th 2013)
 
-- Added `unsafe` parameter to :func:`~werkzeug.urls.url_quote`.
-- Fixed an issue with :func:`~werkzeug.urls.url_quote_plus` not quoting
+- Added ``unsafe`` parameter to ``urls.url_quote``.
+- Fixed an issue with ``urls.url_quote_plus`` not quoting
   `'+'` correctly.
 - Ported remaining parts of :class:`~werkzeug.contrib.RedisCache` to
   Python 3.3.

src/werkzeug/_internal.py

@@ -287,31 +287,6 @@ def __repr__(self) -> str:
         return f"<{type(self).__name__} {self.name}>"
 
 
-def _decode_idna(domain: str) -> str:
-    try:
-        data = domain.encode("ascii")
-    except UnicodeEncodeError:
-        # If the domain is not ASCII, it's decoded already.
-        return domain
-
-    try:
-        # Try decoding in one shot.
-        return data.decode("idna")
-    except UnicodeDecodeError:
-        pass
-
-    # Decode each part separately, leaving invalid parts as punycode.
-    parts = []
-
-    for part in data.split(b"."):
-        try:
-            parts.append(part.decode("idna"))
-        except UnicodeDecodeError:
-            parts.append(part.decode("ascii"))
-
-    return ".".join(parts)
-
-
 _plain_int_re = re.compile(r"-?\d+", re.ASCII)
 
 

src/werkzeug/test.py

@@ -354,9 +354,7 @@ def __init__(
         self.path = iri_to_uri(request_uri.path)
         self.request_uri = path
         if base_url is not None:
-            base_url = iri_to_uri(
-                base_url, charset=charset if charset != "utf-8" else None
-            )
+            base_url = iri_to_uri(base_url)
         self.base_url = base_url  # type: ignore
         if isinstance(query_string, str):
             self.query_string = query_string