From a531872b00e0c3697603c9824942b0e8f6628d40 Mon Sep 17 00:00:00 2001
From: Steven Troxler <steven.troxler@gmail.com>
Date: Tue, 13 Oct 2026 09:12:22 -0700
Subject: [PATCH] Fix codecs.register_error callback type

The callback receives one of the three concrete Unicode codec error types. Model that union so contextual typing exposes their shared attributes.
---
 stdlib/_codecs.pyi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stdlib/_codecs.pyi b/stdlib/_codecs.pyi
index 449e9e24af9b..e854c80ff375 100644
--- a/stdlib/_codecs.pyi
+++ b/stdlib/_codecs.pyi
@@ -13,7 +13,7 @@ class _EncodingMap:
 
 _DecodeCharMap: TypeAlias = SupportsGetItem[int, str | int | None]
 _EncodeCharMap: TypeAlias = SupportsGetItem[int, bytes | int | None] | _EncodingMap
-_Handler: TypeAlias = Callable[[UnicodeError], tuple[str | bytes, int]]
+_Handler: TypeAlias = Callable[[UnicodeEncodeError | UnicodeDecodeError | UnicodeTranslateError], tuple[str | bytes, int]]
 _SearchFunction: TypeAlias = Callable[[str], codecs.CodecInfo | None]
 
 def register(search_function: _SearchFunction, /) -> None: ...