diff --git a/Doc/library/formatter.rst b/Doc/library/formatter.rst
index 2774a2b..ba09b8e 100644
--- a/Doc/library/formatter.rst
+++ b/Doc/library/formatter.rst
@@ -242,8 +242,8 @@
 .. method:: writer.new_font(font)
 
    Set the font style.  The value of *font* will be ``None``, indicating that the
-   device's default font should be used, or a tuple of the form ``(``*size*,
-   *italic*, *bold*, *teletype*``)``.  Size will be a string indicating the size of
+   device's default font should be used, or a tuple of the form ``(size,
+   italic, bold, teletype)``.  Size will be a string indicating the size of
    font that should be used; specific strings and their interpretation must be
    defined by the application.  The *italic*, *bold*, and *teletype* values are
    Boolean values specifying which of those font attributes should be used.
diff --git a/Doc/library/pdb.rst b/Doc/library/pdb.rst
index 804dd23..d84c549 100644
--- a/Doc/library/pdb.rst
+++ b/Doc/library/pdb.rst
@@ -178,7 +178,7 @@
 u(p)
    Move the current frame one level up in the stack trace (to an older frame).
 
-b(reak) [[*filename*:]*lineno*``|``*function*[, *condition*]]
+b(reak) [[*filename*:]\ *lineno* | *function*\ [, *condition*]]
    With a *lineno* argument, set a break there in the current file.  With a
    *function* argument, set a break at the first executable statement within that
    function. The line number may be prefixed with a filename and a colon, to
@@ -193,7 +193,7 @@
    times that breakpoint has been hit, the current ignore count, and the associated
    condition if any.
 
-tbreak [[*filename*:]*lineno*``|``*function*[, *condition*]]
+tbreak [[*filename*:]\ *lineno* | *function*\ [, *condition*]]
    Temporary breakpoint, which is removed automatically when it is first hit.  The
    arguments are the same as break.
 
@@ -279,7 +279,7 @@
    possible to jump into the middle of a :keyword:`for` loop or out of a
    :keyword:`finally` clause.
 
-l(ist) [*first*[, *last*]]
+l(ist) [*first*\ [, *last*]]
    List source code for the current file.  Without arguments, list 11 lines around
    the current line or continue the previous listing.  With one argument, list 11
    lines around at that line.  With two arguments, list the given range; if the
@@ -324,7 +324,7 @@
 unalias *name*
    Deletes the specified alias.
 
-[!]*statement*
+[!]\ *statement*
    Execute the (one-line) *statement* in the context of the current stack frame.
    The exclamation point can be omitted unless the first word of the statement
    resembles a debugger command. To set a global variable, you can prefix the
diff --git a/Doc/tools/sphinx-build.py b/Doc/tools/sphinx-build.py
index 8c9331e..e19b10a 100644
--- a/Doc/tools/sphinx-build.py
+++ b/Doc/tools/sphinx-build.py
@@ -13,9 +13,10 @@
 
     if sys.version_info[:3] < (2, 5, 0):
         print >>sys.stderr, """\
-Error: Sphinx needs to be executed with Python 2.5 or newer.
+Error: Sphinx needs to be executed with Python 2.5 or newer
 (If you run this from the Makefile, you can set the PYTHON variable
-to the path of an alternative interpreter executable.)
+to the path of an alternative interpreter executable, e.g.,
+``make html PYTHON=python2.5``).
 """
         sys.exit(1)
 
diff --git a/Lib/SimpleXMLRPCServer.py b/Lib/SimpleXMLRPCServer.py
index 458d427..5f6e9d0 100644
--- a/Lib/SimpleXMLRPCServer.py
+++ b/Lib/SimpleXMLRPCServer.py
@@ -104,6 +104,7 @@
 import BaseHTTPServer
 import sys
 import os
+import traceback
 try:
     import fcntl
 except ImportError:
@@ -451,9 +452,16 @@
             response = self.server._marshaled_dispatch(
                     data, getattr(self, '_dispatch', None)
                 )
-        except: # This should only happen if the module is buggy
+        except Exception as e: # This should only happen if the module is buggy
             # internal error, report as HTTP server error
             self.send_response(500)
+
+            # Send information about the exception if requested
+            if hasattr(self.server, '_send_traceback_header') and \
+                    self.server._send_traceback_header:
+                self.send_header("X-exception", str(e))
+                self.send_header("X-traceback", traceback.format_exc())
+
             self.end_headers()
         else:
             # got a valid XML RPC response
@@ -498,6 +506,12 @@
 
     allow_reuse_address = True
 
+    # Warning: this is for debugging purposes only! Never set this to True in
+    # production code, as will be sending out sensitive information (exception
+    # and stack trace details) when exceptions are raised inside
+    # SimpleXMLRPCRequestHandler.do_POST
+    _send_traceback_header = False
+
     def __init__(self, addr, requestHandler=SimpleXMLRPCRequestHandler,
                  logRequests=True, allow_none=False, encoding=None, bind_and_activate=True):
         self.logRequests = logRequests
diff --git a/Lib/test/cjkencodings_test.py b/Lib/test/cjkencodings_test.py
index d5873c0..72f4bdc 100644
--- a/Lib/test/cjkencodings_test.py
+++ b/Lib/test/cjkencodings_test.py
@@ -376,13 +376,20 @@
 b"\xcc\xc7\xce\x2c\x20\xb1\xd7\xb8\xae\xb0\xed\x20\xc0\xce\xc5\xcd"
 b"\xc7\xc1\xb8\xae\xc6\xc3\x0a\xc8\xaf\xb0\xe6\xc0\xba\x20\xc6\xc4"
 b"\xc0\xcc\xbd\xe3\xc0\xbb\x20\xbd\xba\xc5\xa9\xb8\xb3\xc6\xc3\xb0"
-b"\xfa\x20\xbf\xa9\xb7\xc1\x20\xba\xd0\xbe\xdf\xbf\xa1\xbc\xad\xbf"
+b"\xfa\x20\xbf\xa9\xb7\xaf\x20\xba\xd0\xbe\xdf\xbf\xa1\xbc\xad\xbf"
 b"\xcd\x20\xb4\xeb\xba\xce\xba\xd0\xc0\xc7\x20\xc7\xc3\xb7\xa7\xc6"
 b"\xfb\xbf\xa1\xbc\xad\xc0\xc7\x20\xba\xfc\xb8\xa5\x0a\xbe\xd6\xc7"
 b"\xc3\xb8\xae\xc4\xc9\xc0\xcc\xbc\xc7\x20\xb0\xb3\xb9\xdf\xc0\xbb"
 b"\x20\xc7\xd2\x20\xbc\xf6\x20\xc0\xd6\xb4\xc2\x20\xc0\xcc\xbb\xf3"
 b"\xc0\xfb\xc0\xce\x20\xbe\xf0\xbe\xee\xb7\xce\x20\xb8\xb8\xb5\xe9"
-b"\xbe\xee\xc1\xdd\xb4\xcf\xb4\xd9\x2e\x0a\x0a",
+b"\xbe\xee\xc1\xdd\xb4\xcf\xb4\xd9\x2e\x0a\x0a\xa1\xd9\xc3\xb9\xb0"
+b"\xa1\xb3\xa1\x3a\x20\xb3\xaf\xbe\xc6\xb6\xf3\x20\xa4\xd4\xa4\xb6"
+b"\xa4\xd0\xa4\xd4\xa4\xd4\xa4\xb6\xa4\xd0\xa4\xd4\xbe\xb1\x7e\x20"
+b"\xa4\xd4\xa4\xa4\xa4\xd2\xa4\xb7\xc5\xad\x21\x20\xa4\xd4\xa4\xa8"
+b"\xa4\xd1\xa4\xb7\xb1\xdd\xbe\xf8\xc0\xcc\x20\xc0\xfc\xa4\xd4\xa4"
+b"\xbe\xa4\xc8\xa4\xb2\xb4\xcf\xb4\xd9\x2e\x20\xa4\xd4\xa4\xb2\xa4"
+b"\xce\xa4\xaa\x2e\x20\xb1\xd7\xb7\xb1\xb0\xc5\x20\xa4\xd4\xa4\xb7"
+b"\xa4\xd1\xa4\xb4\xb4\xd9\x2e\x0a",
 b"\xe2\x97\x8e\x20\xed\x8c\x8c\xec\x9d\xb4\xec\x8d\xac\x28\x50\x79"
 b"\x74\x68\x6f\x6e\x29\xec\x9d\x80\x20\xeb\xb0\xb0\xec\x9a\xb0\xea"
 b"\xb8\xb0\x20\xec\x89\xbd\xea\xb3\xa0\x2c\x20\xea\xb0\x95\xeb\xa0"
@@ -404,7 +411,7 @@
 b"\xec\x9d\xb8\xed\x84\xb0\xed\x94\x84\xeb\xa6\xac\xed\x8c\x85\x0a"
 b"\xed\x99\x98\xea\xb2\xbd\xec\x9d\x80\x20\xed\x8c\x8c\xec\x9d\xb4"
 b"\xec\x8d\xac\xec\x9d\x84\x20\xec\x8a\xa4\xed\x81\xac\xeb\xa6\xbd"
-b"\xed\x8c\x85\xea\xb3\xbc\x20\xec\x97\xac\xeb\xa0\xa4\x20\xeb\xb6"
+b"\xed\x8c\x85\xea\xb3\xbc\x20\xec\x97\xac\xeb\x9f\xac\x20\xeb\xb6"
 b"\x84\xec\x95\xbc\xec\x97\x90\xec\x84\x9c\xec\x99\x80\x20\xeb\x8c"
 b"\x80\xeb\xb6\x80\xeb\xb6\x84\xec\x9d\x98\x20\xed\x94\x8c\xeb\x9e"
 b"\xab\xed\x8f\xbc\xec\x97\x90\xec\x84\x9c\xec\x9d\x98\x20\xeb\xb9"
@@ -413,7 +420,13 @@
 b"\x84\x20\xed\x95\xa0\x20\xec\x88\x98\x20\xec\x9e\x88\xeb\x8a\x94"
 b"\x20\xec\x9d\xb4\xec\x83\x81\xec\xa0\x81\xec\x9d\xb8\x20\xec\x96"
 b"\xb8\xec\x96\xb4\xeb\xa1\x9c\x20\xeb\xa7\x8c\xeb\x93\xa4\xec\x96"
-b"\xb4\xec\xa4\x8d\xeb\x8b\x88\xeb\x8b\xa4\x2e\x0a\x0a"),
+b"\xb4\xec\xa4\x8d\xeb\x8b\x88\xeb\x8b\xa4\x2e\x0a\x0a\xe2\x98\x86"
+b"\xec\xb2\xab\xea\xb0\x80\xeb\x81\x9d\x3a\x20\xeb\x82\xa0\xec\x95"
+b"\x84\xeb\x9d\xbc\x20\xec\x93\x94\xec\x93\x94\xec\x93\xa9\x7e\x20"
+b"\xeb\x8b\x81\xed\x81\xbc\x21\x20\xeb\x9c\xbd\xea\xb8\x88\xec\x97"
+b"\x86\xec\x9d\xb4\x20\xec\xa0\x84\xed\x99\xa5\xeb\x8b\x88\xeb\x8b"
+b"\xa4\x2e\x20\xeb\xb7\x81\x2e\x20\xea\xb7\xb8\xeb\x9f\xb0\xea\xb1"
+b"\xb0\x20\xec\x9d\x8e\xeb\x8b\xa4\x2e\x0a"),
 'gb18030': (
 b"\x50\x79\x74\x68\x6f\x6e\xa3\xa8\xc5\xc9\xc9\xad\xa3\xa9\xd3\xef"
 b"\xd1\xd4\xca\xc7\xd2\xbb\xd6\xd6\xb9\xa6\xc4\xdc\xc7\xbf\xb4\xf3"
diff --git a/Lib/test/test_codecencodings_kr.py b/Lib/test/test_codecencodings_kr.py
index 86663c7..18ed393 100644
--- a/Lib/test/test_codecencodings_kr.py
+++ b/Lib/test/test_codecencodings_kr.py
@@ -30,6 +30,24 @@
         (b"abc\x80\x80\xc1\xc4", "replace", "abc\ufffd\uc894"),
         (b"abc\x80\x80\xc1\xc4\xc8", "replace", "abc\ufffd\uc894\ufffd"),
         (b"abc\x80\x80\xc1\xc4", "ignore",  "abc\uc894"),
+
+        # composed make-up sequence errors
+        (b"\xa4\xd4", "strict", None),
+        (b"\xa4\xd4\xa4", "strict", None),
+        (b"\xa4\xd4\xa4\xb6", "strict", None),
+        (b"\xa4\xd4\xa4\xb6\xa4", "strict", None),
+        (b"\xa4\xd4\xa4\xb6\xa4\xd0", "strict", None),
+        (b"\xa4\xd4\xa4\xb6\xa4\xd0\xa4", "strict", None),
+        (b"\xa4\xd4\xa4\xb6\xa4\xd0\xa4\xd4", "strict", "\uc4d4"),
+        (b"\xa4\xd4\xa4\xb6\xa4\xd0\xa4\xd4x", "strict", "\uc4d4x"),
+        (b"a\xa4\xd4\xa4\xb6\xa4", "replace", "a\ufffd"),
+        (b"\xa4\xd4\xa3\xb6\xa4\xd0\xa4\xd4", "strict", None),
+        (b"\xa4\xd4\xa4\xb6\xa3\xd0\xa4\xd4", "strict", None),
+        (b"\xa4\xd4\xa4\xb6\xa4\xd0\xa3\xd4", "strict", None),
+        (b"\xa4\xd4\xa4\xff\xa4\xd0\xa4\xd4", "replace", "\ufffd"),
+        (b"\xa4\xd4\xa4\xb6\xa4\xff\xa4\xd4", "replace", "\ufffd"),
+        (b"\xa4\xd4\xa4\xb6\xa4\xd0\xa4\xff", "replace", "\ufffd"),
+        (b"\xc1\xc4", "strict", "\uc894"),
     )
 
 class Test_JOHAB(test_multibytecodec_support.TestBase, unittest.TestCase):
diff --git a/Lib/test/test_codecmaps_kr.py b/Lib/test/test_codecmaps_kr.py
index 4a97611..f9c97e5 100644
--- a/Lib/test/test_codecmaps_kr.py
+++ b/Lib/test/test_codecmaps_kr.py
@@ -20,6 +20,10 @@
     encoding = 'euc_kr'
     mapfileurl = 'http://people.freebsd.org/~perky/i18n/EUC-KR.TXT'
 
+    # A4D4 HANGUL FILLER indicates the begin of 8-bytes make-up sequence.
+    pass_enctest = [(b'\xa4\xd4', '\u3164')]
+    pass_dectest = [(b'\xa4\xd4', '\u3164')]
+
 
 class TestJOHABMap(test_multibytecodec_support.TestBase_Mapping,
                    unittest.TestCase):
diff --git a/Lib/test/test_warnings.py b/Lib/test/test_warnings.py
index 54d5dd2..6889e3f 100644
--- a/Lib/test/test_warnings.py
+++ b/Lib/test/test_warnings.py
@@ -1,5 +1,6 @@
 import warnings
 import os
+import sys
 import unittest
 from test import test_support
 
@@ -101,6 +102,10 @@
     # to test_main (regrtest -R).
     if '__warningregistry__' in globals():
         del globals()['__warningregistry__']
+    if hasattr(warning_tests, '__warningregistry__'):
+        del warning_tests.__warningregistry__
+    if hasattr(sys, '__warningregistry__'):
+        del sys.__warningregistry__
     test_support.run_unittest(TestModule)
 
 if __name__ == "__main__":
diff --git a/Lib/test/test_xmlrpc.py b/Lib/test/test_xmlrpc.py
index 4a15de5..7dfabcf 100644
--- a/Lib/test/test_xmlrpc.py
+++ b/Lib/test/test_xmlrpc.py
@@ -6,6 +6,7 @@
 import xmlrpclib
 import SimpleXMLRPCServer
 import threading
+import mimetools
 from test import test_support
 
 alist = [{'astring': 'foo@bar.baz.spam',
@@ -249,11 +250,9 @@
             '''This is the div function'''
             return x // y
 
-
-    serv = SimpleXMLRPCServer.SimpleXMLRPCServer(("localhost", 0),
-                    logRequests=False, bind_and_activate=False)
-
     try:
+        serv = SimpleXMLRPCServer.SimpleXMLRPCServer(("localhost", 0),
+                        logRequests=False, bind_and_activate=False)
         serv.socket.settimeout(3)
         serv.server_bind()
         global PORT
@@ -278,11 +277,15 @@
         evt.set()
 
 
-class HTTPTestCase(unittest.TestCase):
+class SimpleServerTestCase(unittest.TestCase):
     def setUp(self):
+        # enable traceback reporting
+        SimpleXMLRPCServer.SimpleXMLRPCServer._send_traceback_header = True
+
         self.evt = threading.Event()
-        # start server thread to handle just one request
-        threading.Thread(target=http_server, args=(self.evt,2)).start()
+        # start server thread to handle requests
+        serv_args = (self.evt, 2)
+        threading.Thread(target=http_server, args=serv_args).start()
 
         # wait for port to be assigned to server
         n = 1000
@@ -296,6 +299,9 @@
         # wait on the server thread to terminate
         self.evt.wait()
 
+        # disable traceback reporting
+        SimpleXMLRPCServer.SimpleXMLRPCServer._send_traceback_header = False
+
     def test_simple1(self):
         p = xmlrpclib.ServerProxy('http://localhost:%d' % PORT)
         self.assertEqual(p.pow(6,8), 6**8)
@@ -331,6 +337,82 @@
         self.assertEqual(div_result, 127//42)
 
 
+# This is a contrived way to make a failure occur on the server side
+# in order to test the _send_traceback_header flag on the server
+class FailingMessageClass(mimetools.Message):
+    def __getitem__(self, key):
+        key = key.lower()
+        if key == 'content-length':
+            return 'I am broken'
+        return mimetools.Message.__getitem__(self, key)
+
+
+class FailingServerTestCase(unittest.TestCase):
+    def setUp(self):
+        self.evt = threading.Event()
+        # start server thread to handle requests
+        serv_args = (self.evt, 2)
+        threading.Thread(target=http_server, args=serv_args).start()
+
+        # wait for port to be assigned to server
+        n = 1000
+        while n > 0 and PORT is None:
+            time.sleep(0.001)
+            n -= 1
+
+        time.sleep(0.5)
+
+    def tearDown(self):
+        # wait on the server thread to terminate
+        self.evt.wait()
+        # reset flag
+        SimpleXMLRPCServer.SimpleXMLRPCServer._send_traceback_header = False
+        # reset message class
+        SimpleXMLRPCServer.SimpleXMLRPCRequestHandler.MessageClass = mimetools.Message
+
+    def test_basic(self):
+        # check that flag is false by default
+        flagval = SimpleXMLRPCServer.SimpleXMLRPCServer._send_traceback_header
+        self.assertEqual(flagval, False)
+
+        # test a call that won't fail just as a smoke test
+        p = xmlrpclib.ServerProxy('http://localhost:%d' % PORT)
+        self.assertEqual(p.pow(6,8), 6**8)
+
+    def test_fail_no_info(self):
+        # use the broken message class
+        SimpleXMLRPCServer.SimpleXMLRPCRequestHandler.MessageClass = FailingMessageClass
+
+        try:
+            p = xmlrpclib.ServerProxy('http://localhost:%d' % PORT)
+            p.pow(6,8)
+        except xmlrpclib.ProtocolError as e:
+            # The two server-side error headers shouldn't be sent back in this case
+            self.assertTrue(e.headers.get("X-exception") is None)
+            self.assertTrue(e.headers.get("X-traceback") is None)
+        else:
+            self.fail('ProtocolError not raised')
+
+    def test_fail_with_info(self):
+        # use the broken message class
+        SimpleXMLRPCServer.SimpleXMLRPCRequestHandler.MessageClass = FailingMessageClass
+
+        # Check that errors in the server send back exception/traceback
+        # info when flag is set
+        SimpleXMLRPCServer.SimpleXMLRPCServer._send_traceback_header = True
+
+        try:
+            p = xmlrpclib.ServerProxy('http://localhost:%d' % PORT)
+            p.pow(6,8)
+        except xmlrpclib.ProtocolError as e:
+            # We should get error info in the response
+            expected_err = "invalid literal for int() with base 10: 'I am broken'"
+            self.assertEqual(e.headers.get("x-exception"), expected_err)
+            self.assertTrue(e.headers.get("x-traceback") is not None)
+        else:
+            self.fail('ProtocolError not raised')
+
+
 def test_main():
     xmlrpc_tests = [XMLRPCTestCase, HelperTestCase, DateTimeTestCase,
          BinaryTestCase, FaultTestCase]
@@ -340,7 +422,8 @@
     # run on Windows. This only happens on the first test to run, but it
     # fails every time and so these tests are skipped on win32 platforms.
     if sys.platform != 'win32':
-        xmlrpc_tests.append(HTTPTestCase)
+        xmlrpc_tests.append(SimpleServerTestCase)
+        xmlrpc_tests.append(FailingServerTestCase)
 
     test_support.run_unittest(*xmlrpc_tests)
 
diff --git a/Lib/threading.py b/Lib/threading.py
index cae2f77..4ba7252 100644
--- a/Lib/threading.py
+++ b/Lib/threading.py
@@ -445,6 +445,26 @@
             self.__target(*self.__args, **self.__kwargs)
 
     def __bootstrap(self):
+        # Wrapper around the real bootstrap code that ignores
+        # exceptions during interpreter cleanup.  Those typically
+        # happen when a daemon thread wakes up at an unfortunate
+        # moment, finds the world around it destroyed, and raises some
+        # random exception *** while trying to report the exception in
+        # __bootstrap_inner() below ***.  Those random exceptions
+        # don't help anybody, and they confuse users, so we suppress
+        # them.  We suppress them only when it appears that the world
+        # indeed has already been destroyed, so that exceptions in
+        # __bootstrap_inner() during normal business hours are properly
+        # reported.  Also, we only suppress them for daemonic threads;
+        # if a non-daemonic encounters this, something else is wrong.
+        try:
+            self.__bootstrap_inner()
+        except:
+            if self.__daemonic and _sys is None:
+                return
+            raise
+
+    def __bootstrap_inner(self):
         try:
             self.__started = True
             _active_limbo_lock.acquire()
diff --git a/Modules/cjkcodecs/_codecs_kr.c b/Modules/cjkcodecs/_codecs_kr.c
index 2a95bbe..161967e 100644
--- a/Modules/cjkcodecs/_codecs_kr.c
+++ b/Modules/cjkcodecs/_codecs_kr.c
@@ -11,6 +11,26 @@
  * EUC-KR codec
  */
 
+#define EUCKR_JAMO_FIRSTBYTE	0xA4
+#define EUCKR_JAMO_FILLER	0xD4
+
+static const unsigned char u2cgk_choseong[19] = {
+	0xa1, 0xa2, 0xa4, 0xa7, 0xa8, 0xa9, 0xb1, 0xb2,
+	0xb3, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb,
+	0xbc, 0xbd, 0xbe
+};
+static const unsigned char u2cgk_jungseong[21] = {
+	0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6,
+	0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce,
+	0xcf, 0xd0, 0xd1, 0xd2, 0xd3
+};
+static const unsigned char u2cgk_jongseong[28] = {
+	0xd4, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+	0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0,
+	0xb1, 0xb2, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xba,
+	0xbb, 0xbc, 0xbd, 0xbe
+};
+
 ENCODER(euc_kr)
 {
 	while (inleft > 0) {
@@ -28,17 +48,57 @@
 		TRYMAP_ENC(cp949, code, c);
 		else return 1;
 
-		if (code & 0x8000) /* MSB set: CP949 */
-			return 1;
+		if ((code & 0x8000) == 0) {
+			/* KS X 1001 coded character */
+			OUT1((code >> 8) | 0x80)
+			OUT2((code & 0xFF) | 0x80)
+			NEXT(1, 2)
+		}
+		else {	/* Mapping is found in CP949 extension,
+			 * but we encode it in KS X 1001:1998 Annex 3,
+			 * make-up sequence for EUC-KR. */
 
-		OUT1((code >> 8) | 0x80)
-		OUT2((code & 0xFF) | 0x80)
-		NEXT(1, 2)
+			REQUIRE_OUTBUF(8)
+
+			/* syllable composition precedence */
+			OUT1(EUCKR_JAMO_FIRSTBYTE)
+			OUT2(EUCKR_JAMO_FILLER)
+
+			/* All codepoints in CP949 extension are in unicode
+			 * Hangul Syllable area. */
+			assert(0xac00 <= c && c <= 0xd7a3);
+			c -= 0xac00;
+
+			OUT3(EUCKR_JAMO_FIRSTBYTE)
+			OUT4(u2cgk_choseong[c / 588])
+			NEXT_OUT(4)
+
+			OUT1(EUCKR_JAMO_FIRSTBYTE)
+			OUT2(u2cgk_jungseong[(c / 28) % 21])
+			OUT3(EUCKR_JAMO_FIRSTBYTE)
+			OUT4(u2cgk_jongseong[c % 28])
+			NEXT(1, 4)
+		}
 	}
 
 	return 0;
 }
 
+#define NONE	127
+
+static const unsigned char cgk2u_choseong[] = { /* [A1, BE] */
+	   0,    1, NONE,    2, NONE, NONE,    3,    4,
+	   5, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
+	   6,    7,    8, NONE,    9,   10,   11,   12,
+	  13,   14,   15,   16,   17,   18
+};
+static const unsigned char cgk2u_jongseong[] = { /* [A1, BE] */
+	   1,    2,    3,    4,    5,    6,    7, NONE,
+	   8,    9,   10,   11,   12,   13,   14,   15,
+	  16,   17, NONE,   18,   19,   20,   21,   22,
+	NONE,   23,   24,   25,   26,   27
+};
+
 DECODER(euc_kr)
 {
 	while (inleft > 0) {
@@ -54,13 +114,50 @@
 
 		REQUIRE_INBUF(2)
 
-		TRYMAP_DEC(ksx1001, **outbuf, c ^ 0x80, IN2 ^ 0x80) {
+		if (c == EUCKR_JAMO_FIRSTBYTE &&
+		    IN2 == EUCKR_JAMO_FILLER) {
+			/* KS X 1001:1998 Annex 3 make-up sequence */
+			DBCHAR cho, jung, jong;
+
+			REQUIRE_INBUF(8)
+			if ((*inbuf)[2] != EUCKR_JAMO_FIRSTBYTE ||
+			    (*inbuf)[4] != EUCKR_JAMO_FIRSTBYTE ||
+			    (*inbuf)[6] != EUCKR_JAMO_FIRSTBYTE)
+				return 8;
+
+			c = (*inbuf)[3];
+			if (0xa1 <= c && c <= 0xbe)
+				cho = cgk2u_choseong[c - 0xa1];
+			else
+				cho = NONE;
+
+			c = (*inbuf)[5];
+			jung = (0xbf <= c && c <= 0xd3) ? c - 0xbf : NONE;
+
+			c = (*inbuf)[7];
+			if (c == EUCKR_JAMO_FILLER)
+				jong = 0;
+			else if (0xa1 <= c && c <= 0xbe)
+				jong = cgk2u_jongseong[c - 0xa1];
+			else
+				jong = NONE;
+
+			if (cho == NONE || jung == NONE || jong == NONE)
+				return 8;
+
+			OUT1(0xac00 + cho*588 + jung*28 + jong);
+			NEXT(8, 1)
+		}
+		else TRYMAP_DEC(ksx1001, **outbuf, c ^ 0x80, IN2 ^ 0x80) {
 			NEXT(2, 1)
-		} else return 2;
+		}
+		else
+			return 2;
 	}
 
 	return 0;
 }
+#undef NONE
 
 
 /*