diff --git a/Include/Python.h b/Include/Python.h
index 4179b2e..044ad5f 100644
--- a/Include/Python.h
+++ b/Include/Python.h
@@ -72,6 +72,7 @@
 
 #include "pydebug.h"
 
+#include "unicodeobject.h"
 #include "intobject.h"
 #include "longobject.h"
 #include "floatobject.h"
@@ -92,7 +93,6 @@
 #include "cobject.h"
 #include "traceback.h"
 #include "sliceobject.h"
-#include "unicodeobject.h"
 
 #include "codecs.h"
 #include "pyerrors.h"
diff --git a/Include/intobject.h b/Include/intobject.h
index 781a4b5..507a9e2 100644
--- a/Include/intobject.h
+++ b/Include/intobject.h
@@ -60,6 +60,7 @@
 #define PyInt_Check(op) ((op)->ob_type == &PyInt_Type)
 
 extern DL_IMPORT(PyObject *) PyInt_FromString Py_PROTO((char*, char**, int));
+extern DL_IMPORT(PyObject *) PyInt_FromUnicode Py_PROTO((Py_UNICODE*, int, int));
 extern DL_IMPORT(PyObject *) PyInt_FromLong Py_PROTO((long));
 extern DL_IMPORT(long) PyInt_AsLong Py_PROTO((PyObject *));
 extern DL_IMPORT(long) PyInt_GetMax Py_PROTO((void));
diff --git a/Include/longobject.h b/Include/longobject.h
index 89f2aa3..ca1adb7 100644
--- a/Include/longobject.h
+++ b/Include/longobject.h
@@ -82,6 +82,7 @@
 #endif /* HAVE_LONG_LONG */
 
 DL_IMPORT(PyObject *) PyLong_FromString Py_PROTO((char *, char **, int));
+DL_IMPORT(PyObject *) PyLong_FromUnicode Py_PROTO((Py_UNICODE*, int, int));
 
 #ifdef __cplusplus
 }
diff --git a/Include/unicodeobject.h b/Include/unicodeobject.h
index cfc8126..e1f5914 100644
--- a/Include/unicodeobject.h
+++ b/Include/unicodeobject.h
@@ -358,7 +358,7 @@
 
 /* --- UTF-16 Codecs ------------------------------------------------------ */
 
-/* Decodes length bytes from a UTF-16 encoded buffer string and return
+/* Decodes length bytes from a UTF-16 encoded buffer string and returns
    the corresponding Unicode object.
 
    errors (if non-NULL) defines the error handling. It defaults
@@ -397,7 +397,7 @@
     );
 
 /* Returns a Python string object holding the UTF-16 encoded value of
-   the Unicode data in s.
+   the Unicode data.
 
    If byteorder is not 0, output is written according to the following
    byte order:
@@ -587,6 +587,37 @@
 
 #endif /* MS_WIN32 */
 
+/* --- Decimal Encoder ---------------------------------------------------- */
+
+/* Takes a Unicode string holding a decimal value and writes it into
+   an output buffer using standard ASCII digit codes.
+
+   The output buffer has to provide at least length+1 bytes of storage
+   area. The output string is 0-terminated.
+
+   The encoder converts whitespace to ' ', decimal characters to their
+   corresponding ASCII digit and all other Latin-1 characters except
+   \0 as-is. Characters outside this range (Unicode ordinals 1-256)
+   are treated as errors. This includes embedded NULL bytes.
+
+   Error handling is defined by the errors argument:
+
+      NULL or "strict": raise a ValueError
+      "ignore": ignore the wrong characters (these are not copied to the
+		output buffer)
+      "replace": replaces illegal characters with '?'
+
+   Returns 0 on success, -1 on failure.
+
+*/
+
+extern DL_IMPORT(int) PyUnicode_EncodeDecimal(
+    Py_UNICODE *s,		/* Unicode buffer */
+    int length,			/* Number of Py_UNICODE chars to encode */
+    char *output,		/* Output buffer; must have size >= length */
+    const char *errors		/* error handling */
+    );
+
 /* --- Methods & Slots ----------------------------------------------------
 
    These are capable of handling Unicode objects and strings on input
diff --git a/Lib/encodings/__init__.py b/Lib/encodings/__init__.py
index cd5876e..fa3119a 100644
--- a/Lib/encodings/__init__.py
+++ b/Lib/encodings/__init__.py
@@ -4,8 +4,8 @@
     directory.
 
     Codec modules must have names corresponding to standard lower-case
-    encoding names. Hyphens are automatically converted to
-    underscores, e.g. 'utf-8' is looked up as module utf_8.
+    encoding names with hyphens mapped to underscores, e.g. 'utf-8' is
+    implemented by the module 'utf_8.py'.
 
     Each codec module must export the following interface:
 
@@ -40,7 +40,7 @@
         return entry
 
     # Import the module
-    modname = string.replace(encoding,'-','_')
+    modname = string.replace(encoding, '-', '_')
     modname = aliases.aliases.get(modname,modname)
     try:
         mod = __import__(modname,globals(),locals(),'*')
diff --git a/Lib/encodings/aliases.py b/Lib/encodings/aliases.py
index d99b38e..1214cf9 100644
--- a/Lib/encodings/aliases.py
+++ b/Lib/encodings/aliases.py
@@ -54,4 +54,7 @@
     'macroman': 'mac_roman',
     'macturkish': 'mac_turkish',
 
+    # MBCS
+    'dbcs': 'mbcs',
+
 }
diff --git a/Lib/string.py b/Lib/string.py
index 5eb5697..5f90723 100644
--- a/Lib/string.py
+++ b/Lib/string.py
@@ -196,14 +196,11 @@
     Return the floating point number represented by the string s.
 
     """
-    if type(s) == _StringType:
-        return _float(s)
-    else:
-        raise TypeError('argument 1: expected string, %s found' %
-                        type(s).__name__)
+    return _float(s)
+
 
 # Convert string to integer
-def atoi(*args):
+def atoi(s , base=10):
     """atoi(s [,base]) -> int
 
     Return the integer represented by the string s in the given
@@ -214,23 +211,11 @@
     accepted.
 
     """
-    try:
-        s = args[0]
-    except IndexError:
-        raise TypeError('function requires at least 1 argument: %d given' %
-                        len(args))
-    # Don't catch type error resulting from too many arguments to int().  The
-    # error message isn't compatible but the error type is, and this function
-    # is complicated enough already.
-    if type(s) == _StringType:
-        return _apply(_int, args)
-    else:
-        raise TypeError('argument 1: expected string, %s found' %
-                        type(s).__name__)
+    return _int(s, base)
 
 
 # Convert string to long integer
-def atol(*args):
+def atol(s, base=10):
     """atol(s [,base]) -> long
 
     Return the long integer represented by the string s in the
@@ -242,19 +227,7 @@
     unless base is 0.
 
     """
-    try:
-        s = args[0]
-    except IndexError:
-        raise TypeError('function requires at least 1 argument: %d given' %
-                        len(args))
-    # Don't catch type error resulting from too many arguments to long().  The
-    # error message isn't compatible but the error type is, and this function
-    # is complicated enough already.
-    if type(s) == _StringType:
-        return _apply(_long, args)
-    else:
-        raise TypeError('argument 1: expected string, %s found' %
-                        type(s).__name__)
+    return _long(s, base)
 
 
 # Left-justify a string
diff --git a/Lib/test/output/test_unicode b/Lib/test/output/test_unicode
index 88e8624..15ffdc1 100644
--- a/Lib/test/output/test_unicode
+++ b/Lib/test/output/test_unicode
@@ -3,3 +3,4 @@
 Testing Unicode contains method... done.
 Testing Unicode formatting strings... done.
 Testing builtin codecs... done.
+Testing standard mapping codecs... 0-127... 128-255... done.
diff --git a/Lib/test/test_b1.py b/Lib/test/test_b1.py
index d9c6320..6a89d22 100644
--- a/Lib/test/test_b1.py
+++ b/Lib/test/test_b1.py
@@ -95,6 +95,7 @@
 if complex(0j, 3.14) <> 3.14j: raise TestFailed, 'complex(0j, 3.14)'
 if complex(0.0, 3.14) <> 3.14j: raise TestFailed, 'complex(0.0, 3.14)'
 if complex("  3.14+J  ") <> 3.14+1j:  raise TestFailed, 'complex("  3.14+J  )"'
+if complex(u"  3.14+J  ") <> 3.14+1j:  raise TestFailed, 'complex(u"  3.14+J  )"'
 class Z:
     def __complex__(self): return 3.14j
 z = Z()
@@ -208,6 +209,9 @@
 if float(314) <> 314.0: raise TestFailed, 'float(314)'
 if float(314L) <> 314.0: raise TestFailed, 'float(314L)'
 if float("  3.14  ") <> 3.14:  raise TestFailed, 'float("  3.14  ")'
+if float(u"  3.14  ") <> 3.14:  raise TestFailed, 'float(u"  3.14  ")'
+if float(u"  \u0663.\u0661\u0664  ") <> 3.14:
+    raise TestFailed, 'float(u"  \u0663.\u0661\u0664  ")'
 
 print 'getattr'
 import sys
@@ -254,6 +258,9 @@
 if int(-3.9) <> -3: raise TestFailed, 'int(-3.9)'
 if int(3.5) <> 3: raise TestFailed, 'int(3.5)'
 if int(-3.5) <> -3: raise TestFailed, 'int(-3.5)'
+# Different base:
+if int("10",16) <> 16L: raise TestFailed, 'int("10",16)'
+if int(u"10",16) <> 16L: raise TestFailed, 'int(u"10",16)'
 # Test conversion fron strings and various anomalies
 L = [
         ('0', 0),
@@ -267,9 +274,28 @@
         ('314 ', 314),
         ('  \t\t  314  \t\t  ', 314),
         (`sys.maxint`, sys.maxint),
+        ('  1x', ValueError),
+        ('  1  ', 1),
+        ('  1\02  ', ValueError),
         ('', ValueError),
         (' ', ValueError),
         ('  \t\t  ', ValueError),
+        (u'0', 0),
+        (u'1', 1),
+        (u'9', 9),
+        (u'10', 10),
+        (u'99', 99),
+        (u'100', 100),
+        (u'314', 314),
+        (u' 314', 314),
+        (u'\u0663\u0661\u0664 ', 314),
+        (u'  \t\t  314  \t\t  ', 314),
+        (u'  1x', ValueError),
+        (u'  1  ', 1),
+        (u'  1\02  ', ValueError),
+        (u'', ValueError),
+        (u' ', ValueError),
+        (u'  \t\t  ', ValueError),
 ]
 for s, v in L:
     for sign in "", "+", "-":
@@ -349,10 +375,17 @@
 if long(-3.9) <> -3L: raise TestFailed, 'long(-3.9)'
 if long(3.5) <> 3L: raise TestFailed, 'long(3.5)'
 if long(-3.5) <> -3L: raise TestFailed, 'long(-3.5)'
+if long("-3") <> -3L: raise TestFailed, 'long("-3")'
+if long(u"-3") <> -3L: raise TestFailed, 'long(u"-3")'
+# Different base:
+if long("10",16) <> 16L: raise TestFailed, 'long("10",16)'
+if long(u"10",16) <> 16L: raise TestFailed, 'long(u"10",16)'
 # Check conversions from string (same test set as for int(), and then some)
 LL = [
         ('1' + '0'*20, 10L**20),
         ('1' + '0'*100, 10L**100),
+        (u'1' + u'0'*20, 10L**20),
+        (u'1' + u'0'*100, 10L**100),
 ]
 for s, v in L + LL:
     for sign in "", "+", "-":
@@ -363,11 +396,11 @@
                 vv = -v
             try:
                 if long(ss) != long(vv):
-                    raise TestFailed, "int(%s)" % `ss`
+                    raise TestFailed, "long(%s)" % `ss`
             except v:
                 pass
             except ValueError, e:
-                raise TestFailed, "int(%s) raised ValueError: %s" % (`ss`, e)
+                raise TestFailed, "long(%s) raised ValueError: %s" % (`ss`, e)
 
 print 'map'
 if map(None, 'hello world') <> ['h','e','l','l','o',' ','w','o','r','l','d']:
diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index f90887a..5c0a063 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -221,15 +221,23 @@
 
 # Contains:
 print 'Testing Unicode contains method...',
-assert ('a' in 'abdb') == 1
-assert ('a' in 'bdab') == 1
-assert ('a' in 'bdaba') == 1
-assert ('a' in 'bdba') == 1
+assert ('a' in u'abdb') == 1
+assert ('a' in u'bdab') == 1
+assert ('a' in u'bdaba') == 1
+assert ('a' in u'bdba') == 1
 assert ('a' in u'bdba') == 1
 assert (u'a' in u'bdba') == 1
 assert (u'a' in u'bdb') == 0
 assert (u'a' in 'bdb') == 0
 assert (u'a' in 'bdba') == 1
+assert (u'a' in ('a',1,None)) == 1
+assert (u'a' in (1,None,'a')) == 1
+assert (u'a' in (1,None,u'a')) == 1
+assert ('a' in ('a',1,None)) == 1
+assert ('a' in (1,None,'a')) == 1
+assert ('a' in (1,None,u'a')) == 1
+assert ('a' in ('x',1,u'y')) == 0
+assert ('a' in ('x',1,None)) == 0
 print 'done.'
 
 # Formatting:
@@ -270,11 +278,88 @@
     assert unicode(u.encode(encoding),encoding) == u
 
 u = u''.join(map(unichr, range(256)))
-for encoding in ('latin-1',):
-    assert unicode(u.encode(encoding),encoding) == u
+for encoding in (
+    'latin-1',
+    ):
+    try:
+        assert unicode(u.encode(encoding),encoding) == u
+    except AssertionError:
+        print '*** codec "%s" failed round-trip' % encoding
+    except ValueError,why:
+        print '*** codec for "%s" failed: %s' % (encoding, why)
 
 u = u''.join(map(unichr, range(128)))
-for encoding in ('ascii',):
-    assert unicode(u.encode(encoding),encoding) == u
+for encoding in (
+    'ascii',
+    ):
+    try:
+        assert unicode(u.encode(encoding),encoding) == u
+    except AssertionError:
+        print '*** codec "%s" failed round-trip' % encoding
+    except ValueError,why:
+        print '*** codec for "%s" failed: %s' % (encoding, why)
+
+print 'done.'
+
+print 'Testing standard mapping codecs...',
+
+print '0-127...',
+s = ''.join(map(chr, range(128)))
+for encoding in (
+    'cp037', 'cp1026',
+    'cp437', 'cp500', 'cp737', 'cp775', 'cp850',
+    'cp852', 'cp855', 'cp860', 'cp861', 'cp862',
+    'cp863', 'cp865', 'cp866', 
+    'iso8859_10', 'iso8859_13', 'iso8859_14', 'iso8859_15',
+    'iso8859_2', 'iso8859_3', 'iso8859_4', 'iso8859_5', 'iso8859_6',
+    'iso8859_7', 'iso8859_9', 'koi8_r', 'latin_1',
+    'mac_cyrillic', 'mac_latin2',
+
+    'cp1250', 'cp1251', 'cp1252', 'cp1253', 'cp1254', 'cp1255',
+    'cp1256', 'cp1257', 'cp1258',
+    'cp856', 'cp857', 'cp864', 'cp869', 'cp874',
+
+    'mac_greek', 'mac_iceland','mac_roman', 'mac_turkish',
+    'cp1006', 'cp875', 'iso8859_8',
+    
+    ### These have undefined mappings:
+    #'cp424',
+    
+    ):
+    try:
+        assert unicode(s,encoding).encode(encoding) == s
+    except AssertionError:
+        print '*** codec "%s" failed round-trip' % encoding
+    except ValueError,why:
+        print '*** codec for "%s" failed: %s' % (encoding, why)
+
+print '128-255...',
+s = ''.join(map(chr, range(128,256)))
+for encoding in (
+    'cp037', 'cp1026',
+    'cp437', 'cp500', 'cp737', 'cp775', 'cp850',
+    'cp852', 'cp855', 'cp860', 'cp861', 'cp862',
+    'cp863', 'cp865', 'cp866', 
+    'iso8859_10', 'iso8859_13', 'iso8859_14', 'iso8859_15',
+    'iso8859_2', 'iso8859_3', 'iso8859_4', 'iso8859_5', 'iso8859_6',
+    'iso8859_7', 'iso8859_9', 'koi8_r', 'latin_1',
+    'mac_cyrillic', 'mac_latin2',
+    
+    ### These have undefined mappings:
+    #'cp1250', 'cp1251', 'cp1252', 'cp1253', 'cp1254', 'cp1255',
+    #'cp1256', 'cp1257', 'cp1258',
+    #'cp424', 'cp856', 'cp857', 'cp864', 'cp869', 'cp874',
+    #'mac_greek', 'mac_iceland','mac_roman', 'mac_turkish',
+    
+    ### These fail the round-trip:
+    #'cp1006', 'cp875', 'iso8859_8',
+    
+    ):
+    try:
+        assert unicode(s,encoding).encode(encoding) == s
+    except AssertionError:
+        print '*** codec "%s" failed round-trip' % encoding
+    except ValueError,why:
+        print '*** codec for "%s" failed: %s' % (encoding, why)
 
 print 'done.'
diff --git a/Objects/abstract.c b/Objects/abstract.c
index 7202b43..410b80b 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -726,6 +726,27 @@
 	return type_error("bad operand type for abs()");
 }
 
+/* Add a check for embedded NULL-bytes in the argument. */
+static PyObject *
+int_from_string(s, len)
+	const char *s;
+	int len;
+{
+	char *end;
+	PyObject *x;
+
+	x = PyInt_FromString((char*)s, &end, 10);
+	if (x == NULL)
+		return NULL;
+	if (end != s + len) {
+		PyErr_SetString(PyExc_ValueError,
+				"null byte in argument for int()");
+		Py_DECREF(x);
+		return NULL;
+	}
+	return x;
+}
+
 PyObject *
 PyNumber_Int(o)
 	PyObject *o;
@@ -736,69 +757,42 @@
 
 	if (o == NULL)
 		return null_error();
+	if (PyInt_Check(o)) {
+		Py_INCREF(o);
+		return o;
+	}
 	if (PyString_Check(o))
-		return PyInt_FromString(PyString_AS_STRING(o), NULL, 10);
+		return int_from_string(PyString_AS_STRING(o), 
+				       PyString_GET_SIZE(o));
+	if (PyUnicode_Check(o))
+		return PyInt_FromUnicode(PyUnicode_AS_UNICODE(o),
+					 PyUnicode_GET_SIZE(o),
+					 10);
 	m = o->ob_type->tp_as_number;
 	if (m && m->nb_int)
 		return m->nb_int(o);
 	if (!PyObject_AsCharBuffer(o, &buffer, &buffer_len))
-		return PyInt_FromString((char*)buffer, NULL, 10);
+		return int_from_string((char*)buffer, buffer_len);
 
 	return type_error("object can't be converted to int");
 }
 
-/* There are two C API functions for converting a string to a long,
- * PyNumber_Long() and PyLong_FromString().  Both are used in builtin_long, 
- * reachable from Python with the built-in function long().
- *
- * The difference is this: PyNumber_Long will raise an exception when the
- * string cannot be converted to a long.  The most common situation is
- * where a float string is passed in; this raises a ValueError.
- * PyLong_FromString does not raise an exception; it silently truncates the 
- * float to an integer.
- *
- * You can see the different behavior from Python with the following:
- *
- * long('9.5')
- * => ValueError: invalid literal for long(): 9.5
- *
- * long('9.5', 10)
- * => 9L
- *
- * The first example ends up calling PyNumber_Long(), while the second one
- * calls PyLong_FromString().
- */
+/* Add a check for embedded NULL-bytes in the argument. */
 static PyObject *
 long_from_string(s, len)
 	const char *s;
 	int len;
 {
-	const char *start;
 	char *end;
 	PyObject *x;
-	char buffer[256]; /* For errors */
 
-	start = s;
-	while (*s && isspace(Py_CHARMASK(*s)))
-		s++;
 	x = PyLong_FromString((char*)s, &end, 10);
-	if (x == NULL) {
-		if (PyErr_ExceptionMatches(PyExc_ValueError))
-			goto bad;
+	if (x == NULL)
 		return NULL;
-	}
-	while (*end && isspace(Py_CHARMASK(*end)))
-		end++;
-	if (*end != '\0') {
-  bad:
-		sprintf(buffer, "invalid literal for long(): %.200s", s);
-		PyErr_SetString(PyExc_ValueError, buffer);
-		Py_XDECREF(x);
-		return NULL;
-	}
-	else if (end != start + len) {
+	if (end != s + len) {
 		PyErr_SetString(PyExc_ValueError,
 				"null byte in argument for long()");
+		Py_DECREF(x);
 		return NULL;
 	}
 	return x;
@@ -814,6 +808,10 @@
 
 	if (o == NULL)
 		return null_error();
+	if (PyLong_Check(o)) {
+		Py_INCREF(o);
+		return o;
+	}
 	if (PyString_Check(o))
 		/* need to do extra error checking that PyLong_FromString() 
 		 * doesn't do.  In particular long('9.5') must raise an
@@ -821,6 +819,11 @@
 		 */
 		return long_from_string(PyString_AS_STRING(o),
 					PyString_GET_SIZE(o));
+	if (PyUnicode_Check(o))
+		/* The above check is done in PyLong_FromUnicode(). */
+		return PyLong_FromUnicode(PyUnicode_AS_UNICODE(o),
+					  PyUnicode_GET_SIZE(o),
+					  10);
 	m = o->ob_type->tp_as_number;
 	if (m && m->nb_long)
 		return m->nb_long(o);
@@ -838,6 +841,10 @@
 
 	if (o == NULL)
 		return null_error();
+	if (PyFloat_Check(o)) {
+		Py_INCREF(o);
+		return o;
+	}
 	if (!PyString_Check(o)) {
 		m = o->ob_type->tp_as_number;
 		if (m && m->nb_float)
diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index fb1acdc..77ef8d0 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -164,6 +164,22 @@
 		s = PyString_AS_STRING(v);
 		len = PyString_GET_SIZE(v);
 	}
+	else if (PyUnicode_Check(v)) {
+		char s_buffer[256];
+
+		if (PyUnicode_GET_SIZE(v) >= sizeof(s_buffer)) {
+			PyErr_SetString(PyExc_ValueError,
+				 "float() literal too large to convert");
+			return NULL;
+		}
+		if (PyUnicode_EncodeDecimal(PyUnicode_AS_UNICODE(v), 
+					    PyUnicode_GET_SIZE(v),
+					    s_buffer, 
+					    NULL))
+			return NULL;
+		s = s_buffer;
+		len = strlen(s);
+	}
 	else if (PyObject_AsCharBuffer(v, &s, &len)) {
 		PyErr_SetString(PyExc_TypeError,
 				"float() needs a string argument");
diff --git a/Objects/intobject.c b/Objects/intobject.c
index 59c84ad..0c8eefc 100644
--- a/Objects/intobject.c
+++ b/Objects/intobject.c
@@ -261,6 +261,24 @@
 	return PyInt_FromLong(x);
 }
 
+PyObject *
+PyInt_FromUnicode(s, length, base)
+	Py_UNICODE *s;
+	int length;
+	int base;
+{
+	char buffer[256];
+	
+	if (length >= sizeof(buffer)) {
+		PyErr_SetString(PyExc_ValueError,
+				"int() literal too large to convert");
+		return NULL;
+	}
+	if (PyUnicode_EncodeDecimal(s, length, buffer, NULL))
+		return NULL;
+	return PyInt_FromString(buffer, NULL, base);
+}
+
 /* Methods */
 
 /* ARGSUSED */
diff --git a/Objects/longobject.c b/Objects/longobject.c
index bdf4774..d5c2f5f 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -724,7 +724,7 @@
 	int base;
 {
 	int sign = 1;
-	char *start;
+	char *start, *orig_str = str;
 	PyLongObject *z;
 	
 	if ((base != 0 && base < 2) || base > 36) {
@@ -772,17 +772,44 @@
 	}
 	if (z == NULL)
 		return NULL;
-	if (str == start) {
-		PyErr_SetString(PyExc_ValueError,
-				"no digits in long int constant");
-		Py_DECREF(z);
-		return NULL;
-	}
+	if (str == start)
+		goto onError;
 	if (sign < 0 && z != NULL && z->ob_size != 0)
 		z->ob_size = -(z->ob_size);
+	if (*str == 'L' || *str == 'l')
+		str++;
+	while (*str && isspace(Py_CHARMASK(*str)))
+		str++;
+	if (*str != '\0')
+		goto onError;
 	if (pend)
 		*pend = str;
 	return (PyObject *) z;
+
+ onError:
+	PyErr_Format(PyExc_ValueError, 
+		     "invalid literal for long(): %.200s", orig_str);
+	Py_XDECREF(z);
+	return NULL;
+}
+
+PyObject *
+PyLong_FromUnicode(u, length, base)
+	Py_UNICODE *u;
+	int length;
+	int base;
+{
+	char buffer[256];
+
+	if (length >= sizeof(buffer)) {
+		PyErr_SetString(PyExc_ValueError,
+				"long() literal too large to convert");
+		return NULL;
+	}
+	if (PyUnicode_EncodeDecimal(u, length, buffer, NULL))
+		return NULL;
+
+	return PyLong_FromString(buffer, NULL, base);
 }
 
 static PyLongObject *x_divrem
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 9c35e2d..e751bc4 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -329,8 +329,14 @@
 	s = PyString_AS_STRING(obj);
 	len = PyString_GET_SIZE(obj);
     }
-    else if (PyObject_AsCharBuffer(obj, &s, &len))
+    else if (PyObject_AsCharBuffer(obj, &s, &len)) {
+	/* Overwrite the error message with something more useful in
+	   case of a TypeError. */
+	if (PyErr_ExceptionMatches(PyExc_TypeError))
+	    PyErr_SetString(PyExc_TypeError,
+			    "coercing to Unicode: need string or charbuffer");
 	return NULL;
+    }
     if (len == 0) {
 	Py_INCREF(unicode_empty);
 	return (PyObject *)unicode_empty;
@@ -1923,6 +1929,60 @@
     return NULL;
 }
     
+/* --- Decimal Encoder ---------------------------------------------------- */
+
+int PyUnicode_EncodeDecimal(Py_UNICODE *s,
+			    int length,
+			    char *output,
+			    const char *errors)
+{
+    Py_UNICODE *p, *end;
+
+    if (output == NULL) {
+	PyErr_BadArgument();
+	return -1;
+    }
+
+    p = s;
+    end = s + length;
+    while (p < end) {
+	register Py_UNICODE ch = *p++;
+	int decimal;
+	
+	if (Py_UNICODE_ISSPACE(ch)) {
+	    *output++ = ' ';
+	    continue;
+	}
+	decimal = Py_UNICODE_TODECIMAL(ch);
+	if (decimal >= 0) {
+	    *output++ = '0' + decimal;
+	    continue;
+	}
+	if (0 < ch < 256) {
+	    *output++ = ch;
+	    continue;
+	}
+	/* All other characters are considered invalid */
+	if (errors == NULL || strcmp(errors, "strict") == 0) {
+	    PyErr_SetString(PyExc_ValueError,
+			    "invalid decimal Unicode string");
+	    goto onError;
+	}
+	else if (strcmp(errors, "ignore") == 0)
+	    continue;
+	else if (strcmp(errors, "replace") == 0) {
+	    *output++ = '?';
+	    continue;
+	}
+    }
+    /* 0-terminate the output string */
+    *output++ = '\0';
+    return 0;
+
+ onError:
+    return -1;
+}
+
 /* --- Helpers ------------------------------------------------------------ */
 
 static 
@@ -2811,12 +2871,14 @@
     register Py_UNICODE ch;
 
     /* Coerce the two arguments */
-    u = (PyUnicodeObject *)PyUnicode_FromObject(container);
-    if (u == NULL)
-	goto onError;
     v = (PyUnicodeObject *)PyUnicode_FromObject(element);
     if (v == NULL)
 	goto onError;
+    u = (PyUnicodeObject *)PyUnicode_FromObject(container);
+    if (u == NULL) {
+	Py_DECREF(v);
+	goto onError;
+    }
 
     /* Check v in u */
     if (PyUnicode_GET_SIZE(v) != 1) {
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 90af888..3016d56 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -449,17 +449,44 @@
 	PyObject *v;
 {
 	extern double strtod Py_PROTO((const char *, char **));
-	char *s, *start, *end;
+	const char *s, *start;
+	char *end;
 	double x=0.0, y=0.0, z;
 	int got_re=0, got_im=0, done=0;
 	int digit_or_dot;
 	int sw_error=0;
 	int sign;
 	char buffer[256]; /* For errors */
+	int len;
 
-	start = s = PyString_AS_STRING(v);
+	if (PyString_Check(v)) {
+		s = PyString_AS_STRING(v);
+		len = PyString_GET_SIZE(v);
+	}
+	else if (PyUnicode_Check(v)) {
+		char s_buffer[256];
+
+		if (PyUnicode_GET_SIZE(v) >= sizeof(s_buffer)) {
+			PyErr_SetString(PyExc_ValueError,
+				 "complex() literal too large to convert");
+			return NULL;
+		}
+		if (PyUnicode_EncodeDecimal(PyUnicode_AS_UNICODE(v), 
+					    PyUnicode_GET_SIZE(v),
+					    s_buffer, 
+					    NULL))
+			return NULL;
+		s = s_buffer;
+		len = strlen(s);
+	}
+	else if (PyObject_AsCharBuffer(v, &s, &len)) {
+		PyErr_SetString(PyExc_TypeError,
+				"complex() needs a string first argument");
+		return NULL;
+	}
 
 	/* position on first nonblank */
+	start = s;
 	while (*s && isspace(Py_CHARMASK(*s)))
 		s++;
 	if (s[0] == '\0') {
@@ -475,7 +502,7 @@
 		switch (*s) {
 
 		case '\0':
-			if (s-start != PyString_GET_SIZE(v)) {
+			if (s-start != len) {
 				PyErr_SetString(
 					PyExc_ValueError,
 					"null byte in argument for complex()");
@@ -584,7 +611,7 @@
 	i = NULL;
 	if (!PyArg_ParseTuple(args, "O|O:complex", &r, &i))
 		return NULL;
-	if (PyString_Check(r))
+	if (PyString_Check(r) || PyUnicode_Check(r))
 		return complex_from_string(r);
 	if ((nbr = r->ob_type->tp_as_number) == NULL ||
 	    nbr->nb_float == NULL ||
@@ -1289,12 +1316,17 @@
 		return NULL;
 	if (base == -909)
 		return PyNumber_Int(v);
-	else if (!PyString_Check(v)) {
+	else if (PyString_Check(v))
+		return PyInt_FromString(PyString_AS_STRING(v), NULL, base);
+	else if (PyUnicode_Check(v))
+		return PyInt_FromUnicode(PyUnicode_AS_UNICODE(v),
+					 PyUnicode_GET_SIZE(v),
+					 base);
+	else {
 		PyErr_SetString(PyExc_TypeError,
 				"can't convert non-string with explicit base");
 		return NULL;
 	}
-	return PyInt_FromString(PyString_AS_STRING(v), NULL, base);
 }
 
 static char int_doc[] =
@@ -1319,12 +1351,17 @@
 		return NULL;
 	if (base == -909)
 		return PyNumber_Long(v);
-	else if (!PyString_Check(v)) {
+	else if (PyString_Check(v))
+		return PyLong_FromString(PyString_AS_STRING(v), NULL, base);
+	else if (PyUnicode_Check(v))
+		return PyLong_FromUnicode(PyUnicode_AS_UNICODE(v),
+					  PyUnicode_GET_SIZE(v),
+					  base);
+	else {
 		PyErr_SetString(PyExc_TypeError,
 				"can't convert non-string with explicit base");
 		return NULL;
 	}
-	return PyLong_FromString(PyString_AS_STRING(v), NULL, base);
 }
 
 static char long_doc[] =
diff --git a/Python/codecs.c b/Python/codecs.c
index b9a6461..4df389a 100644
--- a/Python/codecs.c
+++ b/Python/codecs.c
@@ -84,8 +84,11 @@
     return -1;
 }
 
+/* Convert a string to a normalized Python string: all characters are
+   converted to lower case, spaces are replaced with underscores. */
+
 static
-PyObject *lowercasestring(const char *string)
+PyObject *normalizestring(const char *string)
 {
     register int i;
     int len = strlen(string);
@@ -96,8 +99,14 @@
     if (v == NULL)
 	return NULL;
     p = PyString_AS_STRING(v);
-    for (i = 0; i < len; i++)
-	p[i] = tolower(string[i]);
+    for (i = 0; i < len; i++) {
+        register char ch = string[i];
+        if (ch == ' ')
+            ch = '-';
+        else
+            ch = tolower(ch);
+	p[i] = ch;
+    }
     return v;
 }
 
@@ -132,8 +141,10 @@
 	    goto onError;
     }
 
-    /* Convert the encoding to a lower-cased Python string */
-    v = lowercasestring(encoding);
+    /* Convert the encoding to a normalized Python string: all
+       characters are converted to lower case, spaces and hypens are
+       replaced with underscores. */
+    v = normalizestring(encoding);
     if (v == NULL)
 	goto onError;
     PyString_InternInPlace(&v);