diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index d135991..c33332e 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -517,11 +517,6 @@
 Py_ssize_t
 PyString_Size(register PyObject *op)
 {
-	if (PyUnicode_Check(op)) {
-		op = _PyUnicode_AsDefaultEncodedString(op, NULL);
-		if (!op)
-			return -1;
-	}
 	if (!PyString_Check(op))
 		return string_getsize(op);
 	return Py_Size(op);
@@ -530,11 +525,6 @@
 /*const*/ char *
 PyString_AsString(register PyObject *op)
 {
-	if (PyUnicode_Check(op)) {
-		op = _PyUnicode_AsDefaultEncodedString(op, NULL);
-		if (!op)
-			return NULL;
-	}
 	if (!PyString_Check(op))
 		return string_getbuffer(op);
 	return ((PyStringObject *)op) -> ob_sval;
@@ -551,18 +541,9 @@
 	}
 
 	if (!PyString_Check(obj)) {
-		if (PyUnicode_Check(obj)) {
-			obj = _PyUnicode_AsDefaultEncodedString(obj, NULL);
-			if (obj == NULL)
-				return -1;
-		}
-		else
-		{
-			PyErr_Format(PyExc_TypeError,
-				     "expected string, "
-				     "%.200s found", Py_Type(obj)->tp_name);
-			return -1;
-		}
+		PyErr_Format(PyExc_TypeError,
+		     "expected string, %.200s found", Py_Type(obj)->tp_name);
+		return -1;
 	}
 
 	*s = PyString_AS_STRING(obj);
@@ -1250,8 +1231,6 @@
 		sep = PyString_AS_STRING(sep_obj);
 		sep_len = PyString_GET_SIZE(sep_obj);
 	}
-	else if (PyUnicode_Check(sep_obj))
-		return PyUnicode_Partition((PyObject *) self, sep_obj);
 	else if (PyObject_AsCharBuffer(sep_obj, &sep, &sep_len))
 		return NULL;
 
@@ -1280,8 +1259,6 @@
 		sep = PyString_AS_STRING(sep_obj);
 		sep_len = PyString_GET_SIZE(sep_obj);
 	}
-	else if (PyUnicode_Check(sep_obj))
-		return PyUnicode_Partition((PyObject *) self, sep_obj);
 	else if (PyObject_AsCharBuffer(sep_obj, &sep, &sep_len))
 		return NULL;
 
@@ -1585,9 +1562,6 @@
 		sub = PyString_AS_STRING(subobj);
 		sub_len = PyString_GET_SIZE(subobj);
 	}
-	else if (PyUnicode_Check(subobj))
-		return PyUnicode_Find(
-			(PyObject *)self, subobj, start, end, dir);
 	else if (PyObject_AsCharBuffer(subobj, &sub, &sub_len))
 		/* XXX - the "expected a character buffer object" is pretty
 		   confusing for a non-expert.  remap to something else ? */
@@ -1836,14 +1810,6 @@
 		sub = PyString_AS_STRING(sub_obj);
 		sub_len = PyString_GET_SIZE(sub_obj);
 	}
-	else if (PyUnicode_Check(sub_obj)) {
-		Py_ssize_t count;
-		count = PyUnicode_Count((PyObject *)self, sub_obj, start, end);
-		if (count == -1)
-			return NULL;
-		else
-		    	return PyInt_FromSsize_t(count);
-	}
 	else if (PyObject_AsCharBuffer(sub_obj, &sub, &sub_len))
 		return NULL;
 
@@ -1888,17 +1854,6 @@
 		table = NULL;
 		tablen = 256;
 	}
-	else if (PyUnicode_Check(tableobj)) {
-		/* Unicode .translate() does not support the deletechars
-		   parameter; instead a mapping to None will cause characters
-		   to be deleted. */
-		if (delobj != NULL) {
-			PyErr_SetString(PyExc_TypeError,
-			"deletions are implemented differently for unicode");
-			return NULL;
-		}
-		return PyUnicode_Translate((PyObject *)self, tableobj, NULL);
-	}
 	else if (PyObject_AsCharBuffer(tableobj, &table, &tablen))
 		return NULL;
 
@@ -2594,9 +2549,6 @@
 		from_s = PyString_AS_STRING(from);
 		from_len = PyString_GET_SIZE(from);
 	}
-	else if (PyUnicode_Check(from))
-		return PyUnicode_Replace((PyObject *)self,
-					 from, to, count);
 	else if (PyObject_AsCharBuffer(from, &from_s, &from_len))
 		return NULL;
 
@@ -2604,9 +2556,6 @@
 		to_s = PyString_AS_STRING(to);
 		to_len = PyString_GET_SIZE(to);
 	}
-	else if (PyUnicode_Check(to))
-		return PyUnicode_Replace((PyObject *)self,
-					 from, to, count);
 	else if (PyObject_AsCharBuffer(to, &to_s, &to_len))
 		return NULL;
 
@@ -2634,9 +2583,6 @@
 		sub = PyString_AS_STRING(substr);
 		slen = PyString_GET_SIZE(substr);
 	}
-	else if (PyUnicode_Check(substr))
-		return PyUnicode_Tailmatch((PyObject *)self,
-					   substr, start, end, direction);
 	else if (PyObject_AsCharBuffer(substr, &sub, &slen))
 		return -1;
 	str = PyString_AS_STRING(self);
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 30ab1bd..c351130 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -1282,17 +1282,17 @@
 char*
 PyUnicode_AsStringAndSize(PyObject *unicode, Py_ssize_t *psize)
 {
-    PyObject *str8;
+    PyObject *bytes;
     if (!PyUnicode_Check(unicode)) {
         PyErr_BadArgument();
         return NULL;
     }
-    str8 = _PyUnicode_AsDefaultEncodedString(unicode, NULL);
-    if (str8 == NULL)
+    bytes = _PyUnicode_AsDefaultEncodedString(unicode, NULL);
+    if (bytes == NULL)
         return NULL;
     if (psize != NULL)
-        *psize = PyString_GET_SIZE(str8);
-    return PyString_AS_STRING(str8);
+        *psize = PyString_GET_SIZE(bytes);
+    return PyString_AS_STRING(bytes);
 }
 
 char*
@@ -1686,7 +1686,7 @@
     char * start;
 
     if (size == 0)
-	return PyString_FromStringAndSize(NULL, 0);
+       return PyString_FromStringAndSize(NULL, 0);
 
     v = PyBytes_FromStringAndSize(NULL, cbAllocated);
     if (v == NULL)
@@ -2078,7 +2078,7 @@
         result = PyString_FromStringAndSize(stackbuf, nneeded);
     }
     else {
-    	/* Cut back to size actually needed. */
+        /* Cut back to size actually needed. */
         nneeded = p - PyString_AS_STRING(result);
         assert(nneeded <= nallocated);
         _PyString_Resize(&result, nneeded);
@@ -4331,7 +4331,7 @@
     else {
 	/* wrong return value */
 	PyErr_Format(PyExc_TypeError,
-                "character mapping must return integer, None or str8, not %.400s",
+                "character mapping must return integer, bytes or None, not %.400s",
                 x->ob_type->tp_name);
 	Py_DECREF(x);
 	return NULL;
@@ -7160,15 +7160,6 @@
 	if (sep != NULL && sep != Py_None) {
 		if (PyUnicode_Check(sep))
 			return _PyUnicode_XStrip(self, striptype, sep);
-		else if (PyString_Check(sep)) {
-			PyObject *res;
-			sep = PyUnicode_FromObject(sep);
-			if (sep==NULL)
-				return NULL;
-			res = _PyUnicode_XStrip(self, striptype, sep);
-			Py_DECREF(sep);
-			return res;
-		}
 		else {
 			PyErr_Format(PyExc_TypeError,
 				     "%s arg must be None, unicode or str",
@@ -8389,13 +8380,6 @@
 	    goto onError;
 	buf[0] = PyUnicode_AS_UNICODE(v)[0];
     }
-
-    else if (PyString_Check(v)) {
-	if (PyString_GET_SIZE(v) != 1)
-	    goto onError;
-	buf[0] = (Py_UNICODE)PyString_AS_STRING(v)[0];
-    }
-
     else {
 	/* Integer input truncated to a character */
         long x;
@@ -8473,7 +8457,7 @@
 	argidx = -2;
     }
     if (Py_Type(args)->tp_as_mapping && !PyTuple_Check(args) &&
-        !PyString_Check(args) && !PyUnicode_Check(args))
+        !PyUnicode_Check(args))
 	dict = args;
 
     while (--fmtcnt >= 0) {
@@ -8679,17 +8663,6 @@
 			goto onError;
                     if (PyUnicode_Check(temp))
                         /* nothing to do */;
-                    else if (PyString_Check(temp)) {
-                        /* convert to string to Unicode */
-		        unicode = PyUnicode_Decode(PyString_AS_STRING(temp),
-						   PyString_GET_SIZE(temp),
-						   NULL,
-						   "strict");
-		        Py_DECREF(temp);
-		        temp = unicode;
-		        if (temp == NULL)
-			    goto onError;
-		    }
 		    else {
 			Py_DECREF(temp);
 			PyErr_SetString(PyExc_TypeError,