document BufferedIOBase.raw and TextIOBase.buffer
diff --git a/Doc/library/io.rst b/Doc/library/io.rst
index 5866113..71d3f67 100644
--- a/Doc/library/io.rst
+++ b/Doc/library/io.rst
@@ -359,9 +359,15 @@
implementation, but wrap one like :class:`BufferedWriter` and
:class:`BufferedReader`.
- :class:`BufferedIOBase` provides or overrides these methods in addition to
+ :class:`BufferedIOBase` provides or overrides these members in addition to
those from :class:`IOBase`:
+ .. attribute:: raw
+
+ The underlying raw stream (a :class:`RawIOBase` instance) that
+ :class:`BufferedIOBase` deals with. This is not part of the
+ :class:`BufferedIOBase` API and may not exist on some implementations.
+
.. method:: detach()
Separate the underlying raw stream from the buffer and return it.
@@ -607,6 +613,12 @@
A string, a tuple of strings, or ``None``, indicating the newlines
translated so far.
+ .. attribute:: buffer
+
+ The underlying binary buffer (a :class:`BufferedIOBase` instance) that
+ :class:`TextIOBase` deals with. This is not part of the
+ :class:`TextIOBase` API and may not exist on some implementations.
+
.. method:: detach()
Separate the underlying buffer from the :class:`TextIOBase` and return it.