Add some missing logging features (#5388)

stdlib/logging/config.pyi

@@ -3,16 +3,39 @@ from _typeshed import AnyPath, StrPath
 from collections.abc import Callable
 from configparser import RawConfigParser
 from threading import Thread
-from typing import IO, Any, Optional, Union
+from typing import IO, Any, Optional, Pattern, Union
+
+if sys.version_info >= (3, 8):
+    from typing import Literal
+else:
+    from typing_extensions import Literal
 
 if sys.version_info >= (3, 7):
     _Path = AnyPath
 else:
     _Path = StrPath
 
+DEFAULT_LOGGING_CONFIG_PORT: int
+RESET_ERROR: int  # undocumented
+IDENTIFIER: Pattern[str]  # undocumented
+
 def dictConfig(config: dict[str, Any]) -> None: ...
-def fileConfig(
-    fname: Union[_Path, IO[str], RawConfigParser], defaults: Optional[dict[str, str]] = ..., disable_existing_loggers: bool = ...
-) -> None: ...
+
+if sys.version_info >= (3, 10):
+    def fileConfig(
+        fname: Union[_Path, IO[str], RawConfigParser],
+        defaults: Optional[dict[str, str]] = ...,
+        disable_existing_loggers: bool = ...,
+        encoding: Optional[str] = ...,
+    ) -> None: ...
+
+else:
+    def fileConfig(
+        fname: Union[_Path, IO[str], RawConfigParser],
+        defaults: Optional[dict[str, str]] = ...,
+        disable_existing_loggers: bool = ...,
+    ) -> None: ...
+
+def valid_ident(s: str) -> Literal[True]: ...  # undocumented
 def listen(port: int = ..., verify: Optional[Callable[[bytes], Optional[bytes]]] = ...) -> Thread: ...
 def stopListening() -> None: ...