gh-124665: Add `_PyCodec_UnregisterError` and `_codecs._unregister_error` (#124677)

1 files changed, 25 insertions, 0 deletions

diff --git a/Modules/_codecsmodule.c b/Modules/_codecsmodule.c
index 32373f0..471b42b 100644
--- a/Modules/_codecsmodule.c
+++ b/Modules/_codecsmodule.c
@@ -980,6 +980,30 @@ _codecs_register_error_impl(PyObject *module, const char *errors,
 }
 
 /*[clinic input]
+_codecs._unregister_error -> bool
+    errors: str
+    /
+
+Un-register the specified error handler for the error handling `errors'.
+
+Only custom error handlers can be un-registered. An exception is raised
+if the error handling is a built-in one (e.g., 'strict'), or if an error
+occurs.
+
+Otherwise, this returns True if a custom handler has been successfully
+un-registered, and False if no custom handler for the specified error
+handling exists.
+
+[clinic start generated code]*/
+
+static int
+_codecs__unregister_error_impl(PyObject *module, const char *errors)
+/*[clinic end generated code: output=28c22be667465503 input=a63ab9e9ce1686d4]*/
+{
+    return _PyCodec_UnregisterError(errors);
+}
+
+/*[clinic input]
 _codecs.lookup_error
     name: str
     /
@@ -1044,6 +1068,7 @@ static PyMethodDef _codecs_functions[] = {
     _CODECS_CODE_PAGE_ENCODE_METHODDEF
     _CODECS_CODE_PAGE_DECODE_METHODDEF
     _CODECS_REGISTER_ERROR_METHODDEF
+    _CODECS__UNREGISTER_ERROR_METHODDEF
     _CODECS_LOOKUP_ERROR_METHODDEF
     {NULL, NULL}                /* sentinel */
 };