diff --git a/Doc/c-api/codec.rst b/Doc/c-api/codec.rst
new file mode 100644
index 0000000..2597d38
--- /dev/null
+++ b/Doc/c-api/codec.rst
@@ -0,0 +1,118 @@
+.. _codec-registry:
+
+Codec registry and support functions
+====================================
+
+.. cfunction:: int PyCodec_Register(PyObject *search_function)
+
+   Register a new codec search function.
+
+   As side effect, this tries to load the :mod:`encodings` package, if not yet
+   done, to make sure that it is always first in the list of search functions.
+
+.. cfunction:: int PyCodec_KnownEncoding(const char *encoding)
+
+   Return ``1`` or ``0`` depending on whether there is a registered codec for
+   the given *encoding*.
+
+.. cfunction:: PyObject* PyCodec_Encode(PyObject *object, const char *encoding, const char *errors)
+
+   Generic codec based encoding API.
+
+   *object* is passed through the encoder function found for the given
+   *encoding* using the error handling method defined by *errors*.  *errors* may
+   be *NULL* to use the default method defined for the codec.  Raises a
+   :exc:`LookupError` if no encoder can be found.
+
+.. cfunction:: PyObject* PyCodec_Decode(PyObject *object, const char *encoding, const char *errors)
+
+   Generic codec based decoding API.
+
+   *object* is passed through the decoder function found for the given
+   *encoding* using the error handling method defined by *errors*.  *errors* may
+   be *NULL* to use the default method defined for the codec.  Raises a
+   :exc:`LookupError` if no encoder can be found.
+
+
+Codec lookup API
+----------------
+
+In the following functions, the *encoding* string is looked up converted to all
+lower-case characters, which makes encodings looked up through this mechanism
+effectively case-insensitive.  If no codec is found, a :exc:`KeyError` is set
+and *NULL* returned.
+
+.. cfunction:: PyObject* PyCodec_Encoder(const char *encoding)
+
+   Get an encoder function for the given *encoding*.
+
+.. cfunction:: PyObject* PyCodec_Decoder(const char *encoding)
+
+   Get a decoder function for the given *encoding*.
+
+.. cfunction:: PyObject* PyCodec_IncrementalEncoder(const char *encoding, const char *errors)
+
+   Get an :class:`IncrementalEncoder` object for the given *encoding*.
+
+.. cfunction:: PyObject* PyCodec_IncrementalDecoder(const char *encoding, const char *errors)
+
+   Get an :class:`IncrementalDecoder` object for the given *encoding*.
+
+.. cfunction:: PyObject* PyCodec_StreamReader(const char *encoding, PyObject *stream, const char *errors)
+
+   Get a :class:`StreamReader` factory function for the given *encoding*.
+
+.. cfunction:: PyObject* PyCodec_StreamWriter(const char *encoding, PyObject *stream, const char *errors)
+
+   Get a :class:`StreamWriter` factory function for the given *encoding*.
+
+
+Registry API for Unicode encoding error handlers
+------------------------------------------------
+
+.. cfunction:: int PyCodec_RegisterError(const char *name, PyObject *error)
+
+   Register the error handling callback function *error* under the given *name*.
+   This callback function will be called by a codec when it encounters
+   unencodable characters/undecodable bytes and *name* is specified as the error
+   parameter in the call to the encode/decode function.
+
+   The callback gets a single argument, an instance of
+   :exc:`UnicodeEncodeError`, :exc:`UnicodeDecodeError` or
+   :exc:`UnicodeTranslateError` that holds information about the problematic
+   sequence of characters or bytes and their offset in the original string (see
+   :ref:`unicodeexceptions` for functions to extract this information).  The
+   callback must either raise the given exception, or return a two-item tuple
+   containing the replacement for the problematic sequence, and an integer
+   giving the offset in the original string at which encoding/decoding should be
+   resumed.
+
+   Return ``0`` on success, ``-1`` on error.
+
+.. cfunction:: PyObject* PyCodec_LookupError(const char *name)
+
+   Lookup the error handling callback function registered under *name*.  As a
+   special case *NULL* can be passed, in which case the error handling callback
+   for "strict" will be returned.
+
+.. cfunction:: PyObject* PyCodec_StrictErrors(PyObject *exc)
+
+   Raise *exc* as an exception.
+
+.. cfunction:: PyObject* PyCodec_IgnoreErrors(PyObject *exc)
+
+   Ignore the unicode error, skipping the faulty input.
+
+.. cfunction:: PyObject* PyCodec_ReplaceErrors(PyObject *exc)
+
+   Replace the unicode encode error with ``?`` or ``U+FFFD``.
+
+.. cfunction:: PyObject* PyCodec_XMLCharRefReplaceErrors(PyObject *exc)
+
+   Replace the unicode encode error with XML character references.
+
+.. cfunction:: PyObject* PyCodec_BackslashReplaceErrors(PyObject *exc)
+
+   Replace the unicode encode error with backslash escapes (``\x``, ``\u`` and
+   ``\U``).
+
diff --git a/Doc/c-api/exceptions.rst b/Doc/c-api/exceptions.rst
index 79e05f1..430ae57 100644
--- a/Doc/c-api/exceptions.rst
+++ b/Doc/c-api/exceptions.rst
@@ -454,6 +454,83 @@
    the warning message.
 
 
+.. _unicodeexceptions:
+
+Unicode Exception Objects
+=========================
+
+The following functions are used to create and modify Unicode exceptions from C.
+
+.. cfunction:: PyObject* PyUnicodeDecodeError_Create(const char *encoding, const char *object, Py_ssize_t length, Py_ssize_t start, Py_ssize_t end, const char *reason)
+
+   Create a :class:`UnicodeDecodeError` object with the attributes *encoding*,
+   *object*, *length*, *start*, *end* and *reason*.
+
+.. cfunction:: PyObject* PyUnicodeEncodeError_Create(const char *encoding, const Py_UNICODE *object, Py_ssize_t length, Py_ssize_t start, Py_ssize_t end, const char *reason)
+
+   Create a :class:`UnicodeEncodeError` object with the attributes *encoding*,
+   *object*, *length*, *start*, *end* and *reason*.
+
+.. cfunction:: PyObject* PyUnicodeTranslateError_Create(const Py_UNICODE *object, Py_ssize_t length, Py_ssize_t start, Py_ssize_t end, const char *reason)
+
+   Create a :class:`UnicodeTranslateError` object with the attributes *object*,
+   *length*, *start*, *end* and *reason*.
+
+.. cfunction:: PyObject* PyUnicodeDecodeError_GetEncoding(PyObject *exc)
+               PyObject* PyUnicodeEncodeError_GetEncoding(PyObject *exc)
+
+   Return the *encoding* attribute of the given exception object.
+
+.. cfunction:: PyObject* PyUnicodeDecodeError_GetObject(PyObject *exc)
+               PyObject* PyUnicodeEncodeError_GetObject(PyObject *exc)
+               PyObject* PyUnicodeTranslateError_GetObject(PyObject *exc)
+
+   Return the *object* attribute of the given exception object.
+
+.. cfunction:: int PyUnicodeDecodeError_GetStart(PyObject *exc, Py_ssize_t *start)
+               int PyUnicodeEncodeError_GetStart(PyObject *exc, Py_ssize_t *start)
+               int PyUnicodeTranslateError_GetStart(PyObject *exc, Py_ssize_t *start)
+
+   Get the *start* attribute of the given exception object and place it into
+   *\*start*.  *start* must not be *NULL*.  Return ``0`` on success, ``-1`` on
+   failure.
+
+.. cfunction:: int PyUnicodeDecodeError_SetStart(PyObject *exc, Py_ssize_t start)
+               int PyUnicodeEncodeError_SetStart(PyObject *exc, Py_ssize_t start)
+               int PyUnicodeTranslateError_SetStart(PyObject *exc, Py_ssize_t start)
+
+   Set the *start* attribute of the given exception object to *start*.  Return
+   ``0`` on success, ``-1`` on failure.
+
+.. cfunction:: int PyUnicodeDecodeError_GetEnd(PyObject *exc, Py_ssize_t *end)
+               int PyUnicodeEncodeError_GetEnd(PyObject *exc, Py_ssize_t *end)
+               int PyUnicodeTranslateError_GetEnd(PyObject *exc, Py_ssize_t *end)
+
+   Get the *end* attribute of the given exception object and place it into
+   *\*end*.  *end* must not be *NULL*.  Return ``0`` on success, ``-1`` on
+   failure.
+
+.. cfunction:: int PyUnicodeDecodeError_SetEnd(PyObject *exc, Py_ssize_t end)
+               int PyUnicodeEncodeError_SetEnd(PyObject *exc, Py_ssize_t end)
+               int PyUnicodeTranslateError_SetEnd(PyObject *exc, Py_ssize_t end)
+
+   Set the *end* attribute of the given exception object to *end*.  Return ``0``
+   on success, ``-1`` on failure.
+
+.. cfunction:: PyObject* PyUnicodeDecodeError_GetReason(PyObject *exc)
+               PyObject* PyUnicodeEncodeError_GetReason(PyObject *exc)
+               PyObject* PyUnicodeTranslateError_GetReason(PyObject *exc)
+
+   Return the *reason* attribute of the given exception object.
+
+.. cfunction:: int PyUnicodeDecodeError_SetReason(PyObject *exc, const char *reason)
+               int PyUnicodeEncodeError_SetReason(PyObject *exc, const char *reason)
+               int PyUnicodeTranslateError_SetReason(PyObject *exc, const char *reason)
+
+   Set the *reason* attribute of the given exception object to *reason*.  Return
+   ``0`` on success, ``-1`` on failure.
+
+
 Recursion Control
 =================
 
diff --git a/Doc/c-api/intro.rst b/Doc/c-api/intro.rst
index b2e9e0a..a2e47d9 100644
--- a/Doc/c-api/intro.rst
+++ b/Doc/c-api/intro.rst
@@ -41,8 +41,8 @@
    #include "Python.h"
 
 This implies inclusion of the following standard headers: ``<stdio.h>``,
-``<string.h>``, ``<errno.h>``, ``<limits.h>``, and ``<stdlib.h>`` (if
-available).
+``<string.h>``, ``<errno.h>``, ``<limits.h>``, ``<assert.h>`` and ``<stdlib.h>``
+(if available).
 
 .. note::
 
diff --git a/Doc/c-api/utilities.rst b/Doc/c-api/utilities.rst
index 499a510..f43933b 100644
--- a/Doc/c-api/utilities.rst
+++ b/Doc/c-api/utilities.rst
@@ -19,3 +19,4 @@
    arg.rst
    conversion.rst
    reflection.rst
+   codec.rst
diff --git a/Doc/library/heapq.rst b/Doc/library/heapq.rst
index b46bd82..a6b9ba2 100644
--- a/Doc/library/heapq.rst
+++ b/Doc/library/heapq.rst
@@ -18,11 +18,12 @@
    Latest version of the `heapq Python source code
    <http://svn.python.org/view/python/branches/release27-maint/Lib/heapq.py?view=markup>`_
 
-Heaps are arrays for which ``heap[k] <= heap[2*k+1]`` and ``heap[k] <=
-heap[2*k+2]`` for all *k*, counting elements from zero.  For the sake of
-comparison, non-existing elements are considered to be infinite.  The
-interesting property of a heap is that ``heap[0]`` is always its smallest
-element.
+Heaps are binary trees for which every parent node has a value less than or
+equal to any of its children.  This implementation uses arrays for which
+``heap[k] <= heap[2*k+1]`` and ``heap[k] <= heap[2*k+2]`` for all *k*, counting
+elements from zero.  For the sake of comparison, non-existing elements are
+considered to be infinite.  The interesting property of a heap is that its
+smallest element is always the root, ``heap[0]``.
 
 The API below differs from textbook heap algorithms in two aspects: (a) We use
 zero-based indexing.  This makes the relationship between the index for a node
diff --git a/Include/codecs.h b/Include/codecs.h
index 0d76241..c038c6a 100644
--- a/Include/codecs.h
+++ b/Include/codecs.h
@@ -133,7 +133,7 @@
 
 /* Unicode encoding error handling callback registry API */
 
-/* Register the error handling callback function error under the name
+/* Register the error handling callback function error under the given
    name. This function will be called by the codec when it encounters
    unencodable characters/undecodable bytes and doesn't know the
    callback name, when name is specified as the error parameter
@@ -141,8 +141,8 @@
    Return 0 on success, -1 on error */
 PyAPI_FUNC(int) PyCodec_RegisterError(const char *name, PyObject *error);
 
-/* Lookup the error handling callback function registered under the
-   name error. As a special case NULL can be passed, in which case
+/* Lookup the error handling callback function registered under the given
+   name. As a special case NULL can be passed, in which case
    the error handling callback for "strict" will be returned. */
 PyAPI_FUNC(PyObject *) PyCodec_LookupError(const char *name);
 
@@ -152,7 +152,7 @@
 /* ignore the unicode error, skipping the faulty input */
 PyAPI_FUNC(PyObject *) PyCodec_IgnoreErrors(PyObject *exc);
 
-/* replace the unicode error with ? or U+FFFD */
+/* replace the unicode encode error with ? or U+FFFD */
 PyAPI_FUNC(PyObject *) PyCodec_ReplaceErrors(PyObject *exc);
 
 /* replace the unicode encode error with XML character references */
diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py
index 0cf57bd..d41bca5 100644
--- a/Lib/test/test_socket.py
+++ b/Lib/test/test_socket.py
@@ -523,7 +523,11 @@
         # XXX(nnorwitz): http://tinyurl.com/os5jz seems to indicate
         # it reasonable to get the host's addr in addition to 0.0.0.0.
         # At least for eCos.  This is required for the S/390 to pass.
-        my_ip_addr = socket.gethostbyname(socket.gethostname())
+        try:
+            my_ip_addr = socket.gethostbyname(socket.gethostname())
+        except socket.error:
+            # Probably name lookup wasn't set up right; skip this test
+            return
         self.assertIn(name[0], ("0.0.0.0", my_ip_addr), '%s invalid' % name[0])
         self.assertEqual(name[1], port)
 
diff --git a/Misc/indent.pro b/Misc/indent.pro
index 3efac89..02cceb6 100644
--- a/Misc/indent.pro
+++ b/Misc/indent.pro
@@ -1,15 +1,24 @@
--sob
--nbad
--bap
--br
--nce
--ncs
--npcs
--i8
--ip8
--c25
+--blank-lines-after-declarations
+--blank-lines-after-procedures
+--braces-after-func-def-line
+--braces-on-if-line
+--braces-on-struct-decl-line
+--break-after-boolean-operator
+--comment-indentation25
+--comment-line-length79
+--continue-at-parentheses
+--dont-cuddle-do-while
+--dont-cuddle-else
+--indent-level4
+--line-length79
+--no-space-after-casts
+--no-space-after-function-call-names
+--no-space-after-parentheses
+--no-tabs
+--procnames-start-lines
+--space-after-for
+--space-after-if
+--space-after-while
+--swallow-optional-blank-lines
+-T PyCFunction
 -T PyObject
-
-
-
-