Closes #13638: document PyErr_SetFromErrnoWithFilenameObject,

PyErr_SetFromWindowsErrWithFilenameObject, and
PyErr_SetExcFromWindowsErrWithFilenameObject.

Note that PyErr_SetExcFromWindowsErrWithFilenameObjectAndSomeOtherParametersSoThatTheNameGetsSoLongThatNobodyIsEverGonnaUseThisStrangeFunctionForAnything is still undocumented.

Doc/c-api/exceptions.rst

@@ -222,13 +222,19 @@ in various ways.  There is a separate error indicator for each thread.
    when the system call returns an error.
 
 
-.. c:function:: PyObject* PyErr_SetFromErrnoWithFilename(PyObject *type, const char *filename)
+.. c:function:: PyObject* PyErr_SetFromErrnoWithFilenameObject(PyObject *type, PyObject *filenameObject)
 
    Similar to :c:func:`PyErr_SetFromErrno`, with the additional behavior that if
-   *filename* is not *NULL*, it is passed to the constructor of *type* as a third
-   parameter.  In the case of exceptions such as :exc:`IOError` and :exc:`OSError`,
-   this is used to define the :attr:`filename` attribute of the exception instance.
-   *filename* is decoded from the filesystem encoding
+   *filenameObject* is not *NULL*, it is passed to the constructor of *type* as
+   a third parameter.  In the case of exceptions such as :exc:`IOError` and
+   :exc:`OSError`, this is used to define the :attr:`filename` attribute of the
+   exception instance.
+
+
+.. c:function:: PyObject* PyErr_SetFromErrnoWithFilename(PyObject *type, const char *filename)
+
+   Similar to :c:func:`PyErr_SetFromErrnoWithFilenameObject`, but the filename
+   is given as a C string.  *filename* is decoded from the filesystem encoding
    (:func:`sys.getfilesystemencoding`).
 
 
@@ -250,16 +256,28 @@ in various ways.  There is a separate error indicator for each thread.
    specifying the exception type to be raised. Availability: Windows.
 
 
+.. c:function:: PyObject* PyErr_SetFromWindowsErrWithFilenameObject(int ierr, PyObject *filenameObject)
+
+   Similar to :c:func:`PyErr_SetFromWindowsErr`, with the additional behavior
+   that if *filenameObject* is not *NULL*, it is passed to the constructor of
+   :exc:`WindowsError` as a third parameter.  Availability: Windows.
+
+
 .. c:function:: PyObject* PyErr_SetFromWindowsErrWithFilename(int ierr, const char *filename)
 
-   Similar to :c:func:`PyErr_SetFromWindowsErr`, with the additional behavior that
-   if *filename* is not *NULL*, it is passed to the constructor of
-   :exc:`WindowsError` as a third parameter.  *filename* is decoded from the
-   filesystem encoding (:func:`sys.getfilesystemencoding`).  Availability:
-   Windows.
+   Similar to :c:func:`PyErr_SetFromWindowsErrWithFilenameObject`, but the
+   filename is given as a C string.  *filename* is decoded from the filesystem
+   encoding (:func:`sys.getfilesystemencoding`).  Availability: Windows.
+
+
+.. c:function:: PyObject* PyErr_SetExcFromWindowsErrWithFilenameObject(PyObject *type, int ierr, PyObject *filename)
+
+   Similar to :c:func:`PyErr_SetFromWindowsErrWithFilenameObject`, with an
+   additional parameter specifying the exception type to be raised.
+   Availability: Windows.
 
 
-.. c:function:: PyObject* PyErr_SetExcFromWindowsErrWithFilename(PyObject *type, int ierr, char *filename)
+.. c:function:: PyObject* PyErr_SetExcFromWindowsErrWithFilename(PyObject *type, int ierr, const char *filename)
 
    Similar to :c:func:`PyErr_SetFromWindowsErrWithFilename`, with an additional
    parameter specifying the exception type to be raised. Availability: Windows.