diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 6b8600b..97f7b96 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -29,138 +29,138 @@
 int
 _Py_SetFileSystemEncoding(PyObject *s)
 {
-	PyObject *defenc, *codec;
-	if (!PyUnicode_Check(s)) {
-		PyErr_BadInternalCall();
-		return -1;
-	}
-	defenc = _PyUnicode_AsDefaultEncodedString(s, NULL);
-	if (!defenc)
-		return -1;
-	codec = _PyCodec_Lookup(PyBytes_AsString(defenc));
-	if (codec == NULL)
-		return -1;
-	Py_DECREF(codec);
-	if (!Py_HasFileSystemDefaultEncoding && Py_FileSystemDefaultEncoding)
-		/* A file system encoding was set at run-time */
-		free((char*)Py_FileSystemDefaultEncoding);
-	Py_FileSystemDefaultEncoding = strdup(PyBytes_AsString(defenc));
-	Py_HasFileSystemDefaultEncoding = 0;
-	return 0;
+    PyObject *defenc, *codec;
+    if (!PyUnicode_Check(s)) {
+        PyErr_BadInternalCall();
+        return -1;
+    }
+    defenc = _PyUnicode_AsDefaultEncodedString(s, NULL);
+    if (!defenc)
+        return -1;
+    codec = _PyCodec_Lookup(PyBytes_AsString(defenc));
+    if (codec == NULL)
+        return -1;
+    Py_DECREF(codec);
+    if (!Py_HasFileSystemDefaultEncoding && Py_FileSystemDefaultEncoding)
+        /* A file system encoding was set at run-time */
+        free((char*)Py_FileSystemDefaultEncoding);
+    Py_FileSystemDefaultEncoding = strdup(PyBytes_AsString(defenc));
+    Py_HasFileSystemDefaultEncoding = 0;
+    return 0;
 }
 
 static PyObject *
 builtin___build_class__(PyObject *self, PyObject *args, PyObject *kwds)
 {
-	PyObject *func, *name, *bases, *mkw, *meta, *prep, *ns, *cell;
-	PyObject *cls = NULL;
-	Py_ssize_t nargs, nbases;
+    PyObject *func, *name, *bases, *mkw, *meta, *prep, *ns, *cell;
+    PyObject *cls = NULL;
+    Py_ssize_t nargs, nbases;
 
-	assert(args != NULL);
-	if (!PyTuple_Check(args)) {
-		PyErr_SetString(PyExc_TypeError,
-				"__build_class__: args is not a tuple");
-		return NULL;
-	}
-	nargs = PyTuple_GET_SIZE(args);
-	if (nargs < 2) {
-		PyErr_SetString(PyExc_TypeError,
-				"__build_class__: not enough arguments");
-		return NULL;
-	}
-	func = PyTuple_GET_ITEM(args, 0); /* Better be callable */
-	name = PyTuple_GET_ITEM(args, 1);
-	if (!PyUnicode_Check(name)) {
-		PyErr_SetString(PyExc_TypeError,
-				"__build_class__: name is not a string");
-		return NULL;
-	}
-	bases = PyTuple_GetSlice(args, 2, nargs);
-	if (bases == NULL)
-		return NULL;
-	nbases = nargs - 2;
+    assert(args != NULL);
+    if (!PyTuple_Check(args)) {
+        PyErr_SetString(PyExc_TypeError,
+                        "__build_class__: args is not a tuple");
+        return NULL;
+    }
+    nargs = PyTuple_GET_SIZE(args);
+    if (nargs < 2) {
+        PyErr_SetString(PyExc_TypeError,
+                        "__build_class__: not enough arguments");
+        return NULL;
+    }
+    func = PyTuple_GET_ITEM(args, 0); /* Better be callable */
+    name = PyTuple_GET_ITEM(args, 1);
+    if (!PyUnicode_Check(name)) {
+        PyErr_SetString(PyExc_TypeError,
+                        "__build_class__: name is not a string");
+        return NULL;
+    }
+    bases = PyTuple_GetSlice(args, 2, nargs);
+    if (bases == NULL)
+        return NULL;
+    nbases = nargs - 2;
 
-	if (kwds == NULL) {
-		meta = NULL;
-                mkw = NULL;
+    if (kwds == NULL) {
+        meta = NULL;
+        mkw = NULL;
+    }
+    else {
+        mkw = PyDict_Copy(kwds); /* Don't modify kwds passed in! */
+        if (mkw == NULL) {
+            Py_DECREF(bases);
+            return NULL;
         }
-	else {
-		mkw = PyDict_Copy(kwds); /* Don't modify kwds passed in! */
-		if (mkw == NULL) {
-			Py_DECREF(bases);
-			return NULL;
-		}
-		meta = PyDict_GetItemString(mkw, "metaclass");
-		if (meta != NULL) {
-			Py_INCREF(meta);
-			if (PyDict_DelItemString(mkw, "metaclass") < 0) {
-				Py_DECREF(meta);
-				Py_DECREF(mkw);
-				Py_DECREF(bases);
-				return NULL;
-			}
-		}
-	}
-	if (meta == NULL) {
-		if (PyTuple_GET_SIZE(bases) == 0)
-			meta = (PyObject *) (&PyType_Type);
-		else {
-			PyObject *base0 = PyTuple_GET_ITEM(bases, 0);
-			meta = (PyObject *) (base0->ob_type);
-		}
-		Py_INCREF(meta);
-	}
-	prep = PyObject_GetAttrString(meta, "__prepare__");
-	if (prep == NULL) {
-		if (PyErr_ExceptionMatches(PyExc_AttributeError)) {
-			PyErr_Clear();
-			ns = PyDict_New();
-		}
-		else {
-			Py_DECREF(meta);
-			Py_XDECREF(mkw);
-			Py_DECREF(bases);
-			return NULL;
-		}
-	}
-	else {
-		PyObject *pargs = PyTuple_Pack(2, name, bases);
-		if (pargs == NULL) {
-			Py_DECREF(prep);
-			Py_DECREF(meta);
-			Py_XDECREF(mkw);
-			Py_DECREF(bases);
-			return NULL;
-		}
-		ns = PyEval_CallObjectWithKeywords(prep, pargs, mkw);
-		Py_DECREF(pargs);
-		Py_DECREF(prep);
-	}
-	if (ns == NULL) {
-		Py_DECREF(meta);
-		Py_XDECREF(mkw);
-		Py_DECREF(bases);
-		return NULL;
-	}
-	cell = PyObject_CallFunctionObjArgs(func, ns, NULL);
-	if (cell != NULL) {
-		PyObject *margs;
-		margs = PyTuple_Pack(3, name, bases, ns);
-		if (margs != NULL) {
-			cls = PyEval_CallObjectWithKeywords(meta, margs, mkw);
-			Py_DECREF(margs);
-		}
-		if (cls != NULL && PyCell_Check(cell)) {
-			Py_INCREF(cls);
-			PyCell_SET(cell, cls);
-		}
-		Py_DECREF(cell);
-	}
-	Py_DECREF(ns);
-	Py_DECREF(meta);
-	Py_XDECREF(mkw);
-	Py_DECREF(bases);
-	return cls;
+        meta = PyDict_GetItemString(mkw, "metaclass");
+        if (meta != NULL) {
+            Py_INCREF(meta);
+            if (PyDict_DelItemString(mkw, "metaclass") < 0) {
+                Py_DECREF(meta);
+                Py_DECREF(mkw);
+                Py_DECREF(bases);
+                return NULL;
+            }
+        }
+    }
+    if (meta == NULL) {
+        if (PyTuple_GET_SIZE(bases) == 0)
+            meta = (PyObject *) (&PyType_Type);
+        else {
+            PyObject *base0 = PyTuple_GET_ITEM(bases, 0);
+            meta = (PyObject *) (base0->ob_type);
+        }
+        Py_INCREF(meta);
+    }
+    prep = PyObject_GetAttrString(meta, "__prepare__");
+    if (prep == NULL) {
+        if (PyErr_ExceptionMatches(PyExc_AttributeError)) {
+            PyErr_Clear();
+            ns = PyDict_New();
+        }
+        else {
+            Py_DECREF(meta);
+            Py_XDECREF(mkw);
+            Py_DECREF(bases);
+            return NULL;
+        }
+    }
+    else {
+        PyObject *pargs = PyTuple_Pack(2, name, bases);
+        if (pargs == NULL) {
+            Py_DECREF(prep);
+            Py_DECREF(meta);
+            Py_XDECREF(mkw);
+            Py_DECREF(bases);
+            return NULL;
+        }
+        ns = PyEval_CallObjectWithKeywords(prep, pargs, mkw);
+        Py_DECREF(pargs);
+        Py_DECREF(prep);
+    }
+    if (ns == NULL) {
+        Py_DECREF(meta);
+        Py_XDECREF(mkw);
+        Py_DECREF(bases);
+        return NULL;
+    }
+    cell = PyObject_CallFunctionObjArgs(func, ns, NULL);
+    if (cell != NULL) {
+        PyObject *margs;
+        margs = PyTuple_Pack(3, name, bases, ns);
+        if (margs != NULL) {
+            cls = PyEval_CallObjectWithKeywords(meta, margs, mkw);
+            Py_DECREF(margs);
+        }
+        if (cls != NULL && PyCell_Check(cell)) {
+            Py_INCREF(cls);
+            PyCell_SET(cell, cls);
+        }
+        Py_DECREF(cell);
+    }
+    Py_DECREF(ns);
+    Py_DECREF(meta);
+    Py_XDECREF(mkw);
+    Py_DECREF(bases);
+    return cls;
 }
 
 PyDoc_STRVAR(build_class_doc,
@@ -171,19 +171,19 @@
 static PyObject *
 builtin___import__(PyObject *self, PyObject *args, PyObject *kwds)
 {
-	static char *kwlist[] = {"name", "globals", "locals", "fromlist",
-				 "level", 0};
-	char *name;
-	PyObject *globals = NULL;
-	PyObject *locals = NULL;
-	PyObject *fromlist = NULL;
-	int level = -1;
+    static char *kwlist[] = {"name", "globals", "locals", "fromlist",
+                             "level", 0};
+    char *name;
+    PyObject *globals = NULL;
+    PyObject *locals = NULL;
+    PyObject *fromlist = NULL;
+    int level = -1;
 
-	if (!PyArg_ParseTupleAndKeywords(args, kwds, "s|OOOi:__import__",
-			kwlist, &name, &globals, &locals, &fromlist, &level))
-		return NULL;
-	return PyImport_ImportModuleLevel(name, globals, locals,
-					  fromlist, level);
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "s|OOOi:__import__",
+                    kwlist, &name, &globals, &locals, &fromlist, &level))
+        return NULL;
+    return PyImport_ImportModuleLevel(name, globals, locals,
+                                      fromlist, level);
 }
 
 PyDoc_STRVAR(import_doc,
@@ -204,7 +204,7 @@
 static PyObject *
 builtin_abs(PyObject *self, PyObject *v)
 {
-	return PyNumber_Absolute(v);
+    return PyNumber_Absolute(v);
 }
 
 PyDoc_STRVAR(abs_doc,
@@ -215,38 +215,38 @@
 static PyObject *
 builtin_all(PyObject *self, PyObject *v)
 {
-	PyObject *it, *item;
-	PyObject *(*iternext)(PyObject *);
-	int cmp;
+    PyObject *it, *item;
+    PyObject *(*iternext)(PyObject *);
+    int cmp;
 
-	it = PyObject_GetIter(v);
-	if (it == NULL)
-		return NULL;
-	iternext = *Py_TYPE(it)->tp_iternext;
+    it = PyObject_GetIter(v);
+    if (it == NULL)
+        return NULL;
+    iternext = *Py_TYPE(it)->tp_iternext;
 
-	for (;;) {
-		item = iternext(it);
-		if (item == NULL)
-			break;
-		cmp = PyObject_IsTrue(item);
-		Py_DECREF(item);
-		if (cmp < 0) {
-			Py_DECREF(it);
-			return NULL;
-		}
-		if (cmp == 0) {
-			Py_DECREF(it);
-			Py_RETURN_FALSE;
-		}
-	}
-	Py_DECREF(it);
-	if (PyErr_Occurred()) {
-		if (PyErr_ExceptionMatches(PyExc_StopIteration))
-			PyErr_Clear();
-		else
-			return NULL;
-	}
-	Py_RETURN_TRUE;
+    for (;;) {
+        item = iternext(it);
+        if (item == NULL)
+            break;
+        cmp = PyObject_IsTrue(item);
+        Py_DECREF(item);
+        if (cmp < 0) {
+            Py_DECREF(it);
+            return NULL;
+        }
+        if (cmp == 0) {
+            Py_DECREF(it);
+            Py_RETURN_FALSE;
+        }
+    }
+    Py_DECREF(it);
+    if (PyErr_Occurred()) {
+        if (PyErr_ExceptionMatches(PyExc_StopIteration))
+            PyErr_Clear();
+        else
+            return NULL;
+    }
+    Py_RETURN_TRUE;
 }
 
 PyDoc_STRVAR(all_doc,
@@ -257,38 +257,38 @@
 static PyObject *
 builtin_any(PyObject *self, PyObject *v)
 {
-	PyObject *it, *item;
-	PyObject *(*iternext)(PyObject *);
-	int cmp;
+    PyObject *it, *item;
+    PyObject *(*iternext)(PyObject *);
+    int cmp;
 
-	it = PyObject_GetIter(v);
-	if (it == NULL)
-		return NULL;
-	iternext = *Py_TYPE(it)->tp_iternext;
+    it = PyObject_GetIter(v);
+    if (it == NULL)
+        return NULL;
+    iternext = *Py_TYPE(it)->tp_iternext;
 
-	for (;;) {
-		item = iternext(it);
-		if (item == NULL)
-			break;
-		cmp = PyObject_IsTrue(item);
-		Py_DECREF(item);
-		if (cmp < 0) {
-			Py_DECREF(it);
-			return NULL;
-		}
-		if (cmp == 1) {
-			Py_DECREF(it);
-			Py_RETURN_TRUE;
-		}
-	}
-	Py_DECREF(it);
-	if (PyErr_Occurred()) {
-		if (PyErr_ExceptionMatches(PyExc_StopIteration))
-			PyErr_Clear();
-		else
-			return NULL;
-	}
-	Py_RETURN_FALSE;
+    for (;;) {
+        item = iternext(it);
+        if (item == NULL)
+            break;
+        cmp = PyObject_IsTrue(item);
+        Py_DECREF(item);
+        if (cmp < 0) {
+            Py_DECREF(it);
+            return NULL;
+        }
+        if (cmp == 1) {
+            Py_DECREF(it);
+            Py_RETURN_TRUE;
+        }
+    }
+    Py_DECREF(it);
+    if (PyErr_Occurred()) {
+        if (PyErr_ExceptionMatches(PyExc_StopIteration))
+            PyErr_Clear();
+        else
+            return NULL;
+    }
+    Py_RETURN_FALSE;
 }
 
 PyDoc_STRVAR(any_doc,
@@ -299,7 +299,7 @@
 static PyObject *
 builtin_ascii(PyObject *self, PyObject *v)
 {
-	return PyObject_ASCII(v);
+    return PyObject_ASCII(v);
 }
 
 PyDoc_STRVAR(ascii_doc,
@@ -314,7 +314,7 @@
 static PyObject *
 builtin_bin(PyObject *self, PyObject *v)
 {
-	return PyNumber_ToBase(v, 2);
+    return PyNumber_ToBase(v, 2);
 }
 
 PyDoc_STRVAR(bin_doc,
@@ -324,90 +324,90 @@
 
 
 typedef struct {
-	PyObject_HEAD
-	PyObject *func;
-	PyObject *it;
+    PyObject_HEAD
+    PyObject *func;
+    PyObject *it;
 } filterobject;
 
 static PyObject *
 filter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 {
-	PyObject *func, *seq;
-	PyObject *it;
-	filterobject *lz;
+    PyObject *func, *seq;
+    PyObject *it;
+    filterobject *lz;
 
-	if (type == &PyFilter_Type && !_PyArg_NoKeywords("filter()", kwds))
-		return NULL;
+    if (type == &PyFilter_Type && !_PyArg_NoKeywords("filter()", kwds))
+        return NULL;
 
-	if (!PyArg_UnpackTuple(args, "filter", 2, 2, &func, &seq))
-		return NULL;
+    if (!PyArg_UnpackTuple(args, "filter", 2, 2, &func, &seq))
+        return NULL;
 
-	/* Get iterator. */
-	it = PyObject_GetIter(seq);
-	if (it == NULL)
-		return NULL;
+    /* Get iterator. */
+    it = PyObject_GetIter(seq);
+    if (it == NULL)
+        return NULL;
 
-	/* create filterobject structure */
-	lz = (filterobject *)type->tp_alloc(type, 0);
-	if (lz == NULL) {
-		Py_DECREF(it);
-		return NULL;
-	}
-	Py_INCREF(func);
-	lz->func = func;
-	lz->it = it;
+    /* create filterobject structure */
+    lz = (filterobject *)type->tp_alloc(type, 0);
+    if (lz == NULL) {
+        Py_DECREF(it);
+        return NULL;
+    }
+    Py_INCREF(func);
+    lz->func = func;
+    lz->it = it;
 
-	return (PyObject *)lz;
+    return (PyObject *)lz;
 }
 
 static void
 filter_dealloc(filterobject *lz)
 {
-	PyObject_GC_UnTrack(lz);
-	Py_XDECREF(lz->func);
-	Py_XDECREF(lz->it);
-	Py_TYPE(lz)->tp_free(lz);
+    PyObject_GC_UnTrack(lz);
+    Py_XDECREF(lz->func);
+    Py_XDECREF(lz->it);
+    Py_TYPE(lz)->tp_free(lz);
 }
 
 static int
 filter_traverse(filterobject *lz, visitproc visit, void *arg)
 {
-	Py_VISIT(lz->it);
-	Py_VISIT(lz->func);
-	return 0;
+    Py_VISIT(lz->it);
+    Py_VISIT(lz->func);
+    return 0;
 }
 
 static PyObject *
 filter_next(filterobject *lz)
 {
-	PyObject *item;
-	PyObject *it = lz->it;
-	long ok;
-	PyObject *(*iternext)(PyObject *);
+    PyObject *item;
+    PyObject *it = lz->it;
+    long ok;
+    PyObject *(*iternext)(PyObject *);
 
-	iternext = *Py_TYPE(it)->tp_iternext;
-	for (;;) {
-		item = iternext(it);
-		if (item == NULL)
-			return NULL;
+    iternext = *Py_TYPE(it)->tp_iternext;
+    for (;;) {
+        item = iternext(it);
+        if (item == NULL)
+            return NULL;
 
-		if (lz->func == Py_None || lz->func == (PyObject *)&PyBool_Type) {
-			ok = PyObject_IsTrue(item);
-		} else {
-			PyObject *good;
-			good = PyObject_CallFunctionObjArgs(lz->func,
-							    item, NULL);
-			if (good == NULL) {
-				Py_DECREF(item);
-				return NULL;
-			}
-			ok = PyObject_IsTrue(good);
-			Py_DECREF(good);
-		}
-		if (ok)
-			return item;
-		Py_DECREF(item);
-	}
+        if (lz->func == Py_None || lz->func == (PyObject *)&PyBool_Type) {
+            ok = PyObject_IsTrue(item);
+        } else {
+            PyObject *good;
+            good = PyObject_CallFunctionObjArgs(lz->func,
+                                                item, NULL);
+            if (good == NULL) {
+                Py_DECREF(item);
+                return NULL;
+            }
+            ok = PyObject_IsTrue(good);
+            Py_DECREF(good);
+        }
+        if (ok)
+            return item;
+        Py_DECREF(item);
+    }
 }
 
 PyDoc_STRVAR(filter_doc,
@@ -417,47 +417,47 @@
 is true. If function is None, return the items that are true.");
 
 PyTypeObject PyFilter_Type = {
-	PyVarObject_HEAD_INIT(&PyType_Type, 0)
-	"filter",			/* tp_name */
-	sizeof(filterobject),		/* tp_basicsize */
-	0,				/* tp_itemsize */
-	/* methods */
-	(destructor)filter_dealloc,	/* tp_dealloc */
-	0,				/* tp_print */
-	0,				/* tp_getattr */
-	0,				/* tp_setattr */
-	0,				/* tp_reserved */
-	0,				/* tp_repr */
-	0,				/* tp_as_number */
-	0,				/* tp_as_sequence */
-	0,				/* tp_as_mapping */
-	0,				/* tp_hash */
-	0,				/* tp_call */
-	0,				/* tp_str */
-	PyObject_GenericGetAttr,	/* tp_getattro */
-	0,				/* tp_setattro */
-	0,				/* tp_as_buffer */
-	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
-		Py_TPFLAGS_BASETYPE,	/* tp_flags */
-	filter_doc,			/* tp_doc */
-	(traverseproc)filter_traverse,	/* tp_traverse */
-	0,				/* tp_clear */
-	0,				/* tp_richcompare */
-	0,				/* tp_weaklistoffset */
-	PyObject_SelfIter,		/* tp_iter */
-	(iternextfunc)filter_next,	/* tp_iternext */
-	0,				/* tp_methods */
-	0,				/* tp_members */
-	0,				/* tp_getset */
-	0,				/* tp_base */
-	0,				/* tp_dict */
-	0,				/* tp_descr_get */
-	0,				/* tp_descr_set */
-	0,				/* tp_dictoffset */
-	0,				/* tp_init */
-	PyType_GenericAlloc,		/* tp_alloc */
-	filter_new,			/* tp_new */
-	PyObject_GC_Del,		/* tp_free */
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    "filter",                           /* tp_name */
+    sizeof(filterobject),               /* tp_basicsize */
+    0,                                  /* tp_itemsize */
+    /* methods */
+    (destructor)filter_dealloc,         /* tp_dealloc */
+    0,                                  /* tp_print */
+    0,                                  /* tp_getattr */
+    0,                                  /* tp_setattr */
+    0,                                  /* tp_reserved */
+    0,                                  /* tp_repr */
+    0,                                  /* tp_as_number */
+    0,                                  /* tp_as_sequence */
+    0,                                  /* tp_as_mapping */
+    0,                                  /* tp_hash */
+    0,                                  /* tp_call */
+    0,                                  /* tp_str */
+    PyObject_GenericGetAttr,            /* tp_getattro */
+    0,                                  /* tp_setattro */
+    0,                                  /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
+        Py_TPFLAGS_BASETYPE,            /* tp_flags */
+    filter_doc,                         /* tp_doc */
+    (traverseproc)filter_traverse,      /* tp_traverse */
+    0,                                  /* tp_clear */
+    0,                                  /* tp_richcompare */
+    0,                                  /* tp_weaklistoffset */
+    PyObject_SelfIter,                  /* tp_iter */
+    (iternextfunc)filter_next,          /* tp_iternext */
+    0,                                  /* tp_methods */
+    0,                                  /* tp_members */
+    0,                                  /* tp_getset */
+    0,                                  /* tp_base */
+    0,                                  /* tp_dict */
+    0,                                  /* tp_descr_get */
+    0,                                  /* tp_descr_set */
+    0,                                  /* tp_dictoffset */
+    0,                                  /* tp_init */
+    PyType_GenericAlloc,                /* tp_alloc */
+    filter_new,                         /* tp_new */
+    PyObject_GC_Del,                    /* tp_free */
 };
 
 
@@ -468,7 +468,7 @@
     PyObject *format_spec = NULL;
 
     if (!PyArg_ParseTuple(args, "O|U:format", &value, &format_spec))
-        return NULL;
+    return NULL;
 
     return PyObject_Format(value, format_spec);
 }
@@ -482,12 +482,12 @@
 static PyObject *
 builtin_chr(PyObject *self, PyObject *args)
 {
-	int x;
+    int x;
 
-	if (!PyArg_ParseTuple(args, "i:chr", &x))
-		return NULL;
+    if (!PyArg_ParseTuple(args, "i:chr", &x))
+        return NULL;
 
-	return PyUnicode_FromOrdinal(x);
+    return PyUnicode_FromOrdinal(x);
 }
 
 PyDoc_VAR(chr_doc) = PyDoc_STR(
@@ -506,111 +506,111 @@
 static char *
 source_as_string(PyObject *cmd, char *funcname, char *what, PyCompilerFlags *cf)
 {
-	char *str;
-	Py_ssize_t size;
+    char *str;
+    Py_ssize_t size;
 
-	if (PyUnicode_Check(cmd)) {
-		cf->cf_flags |= PyCF_IGNORE_COOKIE;
-		cmd = _PyUnicode_AsDefaultEncodedString(cmd, NULL);
-		if (cmd == NULL)
-			return NULL;
-	}
-	else if (!PyObject_CheckReadBuffer(cmd)) {
-		PyErr_Format(PyExc_TypeError,
-		  "%s() arg 1 must be a %s object",
-		  funcname, what);
-		return NULL;
-	}
-	if (PyObject_AsReadBuffer(cmd, (const void **)&str, &size) < 0) {
-		return NULL;
-	}
-	if (strlen(str) != size) {
-		PyErr_SetString(PyExc_TypeError,
-				"source code string cannot contain null bytes");
-		return NULL;
-	}
-	return str;
+    if (PyUnicode_Check(cmd)) {
+        cf->cf_flags |= PyCF_IGNORE_COOKIE;
+        cmd = _PyUnicode_AsDefaultEncodedString(cmd, NULL);
+        if (cmd == NULL)
+            return NULL;
+    }
+    else if (!PyObject_CheckReadBuffer(cmd)) {
+        PyErr_Format(PyExc_TypeError,
+          "%s() arg 1 must be a %s object",
+          funcname, what);
+        return NULL;
+    }
+    if (PyObject_AsReadBuffer(cmd, (const void **)&str, &size) < 0) {
+        return NULL;
+    }
+    if (strlen(str) != size) {
+        PyErr_SetString(PyExc_TypeError,
+                        "source code string cannot contain null bytes");
+        return NULL;
+    }
+    return str;
 }
 
 static PyObject *
 builtin_compile(PyObject *self, PyObject *args, PyObject *kwds)
 {
-	char *str;
-	char *filename;
-	char *startstr;
-	int mode = -1;
-	int dont_inherit = 0;
-	int supplied_flags = 0;
-	int is_ast;
-	PyCompilerFlags cf;
-	PyObject *cmd;
-	static char *kwlist[] = {"source", "filename", "mode", "flags",
-				 "dont_inherit", NULL};
-	int start[] = {Py_file_input, Py_eval_input, Py_single_input};
+    char *str;
+    char *filename;
+    char *startstr;
+    int mode = -1;
+    int dont_inherit = 0;
+    int supplied_flags = 0;
+    int is_ast;
+    PyCompilerFlags cf;
+    PyObject *cmd;
+    static char *kwlist[] = {"source", "filename", "mode", "flags",
+                             "dont_inherit", NULL};
+    int start[] = {Py_file_input, Py_eval_input, Py_single_input};
 
-	if (!PyArg_ParseTupleAndKeywords(args, kwds, "Oss|ii:compile",
-					 kwlist, &cmd, &filename, &startstr,
-					 &supplied_flags, &dont_inherit))
-		return NULL;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "Oss|ii:compile",
+                                     kwlist, &cmd, &filename, &startstr,
+                                     &supplied_flags, &dont_inherit))
+        return NULL;
 
-	cf.cf_flags = supplied_flags | PyCF_SOURCE_IS_UTF8;
+    cf.cf_flags = supplied_flags | PyCF_SOURCE_IS_UTF8;
 
-	if (supplied_flags &
-	    ~(PyCF_MASK | PyCF_MASK_OBSOLETE | PyCF_DONT_IMPLY_DEDENT | PyCF_ONLY_AST))
-	{
-		PyErr_SetString(PyExc_ValueError,
-				"compile(): unrecognised flags");
-		return NULL;
-	}
-	/* XXX Warn if (supplied_flags & PyCF_MASK_OBSOLETE) != 0? */
+    if (supplied_flags &
+        ~(PyCF_MASK | PyCF_MASK_OBSOLETE | PyCF_DONT_IMPLY_DEDENT | PyCF_ONLY_AST))
+    {
+        PyErr_SetString(PyExc_ValueError,
+                        "compile(): unrecognised flags");
+        return NULL;
+    }
+    /* XXX Warn if (supplied_flags & PyCF_MASK_OBSOLETE) != 0? */
 
-	if (!dont_inherit) {
-		PyEval_MergeCompilerFlags(&cf);
-	}
+    if (!dont_inherit) {
+        PyEval_MergeCompilerFlags(&cf);
+    }
 
-	if (strcmp(startstr, "exec") == 0)
-		mode = 0;
-	else if (strcmp(startstr, "eval") == 0)
-		mode = 1;
-	else if (strcmp(startstr, "single") == 0)
-		mode = 2;
-	else {
-		PyErr_SetString(PyExc_ValueError,
-				"compile() arg 3 must be 'exec', 'eval' or 'single'");
-		return NULL;
-	}
+    if (strcmp(startstr, "exec") == 0)
+        mode = 0;
+    else if (strcmp(startstr, "eval") == 0)
+        mode = 1;
+    else if (strcmp(startstr, "single") == 0)
+        mode = 2;
+    else {
+        PyErr_SetString(PyExc_ValueError,
+                        "compile() arg 3 must be 'exec', 'eval' or 'single'");
+        return NULL;
+    }
 
-	is_ast = PyAST_Check(cmd);
-	if (is_ast == -1)
-		return NULL;
-	if (is_ast) {
-		PyObject *result;
-		if (supplied_flags & PyCF_ONLY_AST) {
-			Py_INCREF(cmd);
-			result = cmd;
-		}
-		else {
-			PyArena *arena;
-			mod_ty mod;
+    is_ast = PyAST_Check(cmd);
+    if (is_ast == -1)
+        return NULL;
+    if (is_ast) {
+        PyObject *result;
+        if (supplied_flags & PyCF_ONLY_AST) {
+            Py_INCREF(cmd);
+            result = cmd;
+        }
+        else {
+            PyArena *arena;
+            mod_ty mod;
 
-			arena = PyArena_New();
-			mod = PyAST_obj2mod(cmd, arena, mode);
-			if (mod == NULL) {
-				PyArena_Free(arena);
-				return NULL;
-			}
-			result = (PyObject*)PyAST_Compile(mod, filename,
-							  &cf, arena);
-			PyArena_Free(arena);
-		}
-		return result;
-	}
+            arena = PyArena_New();
+            mod = PyAST_obj2mod(cmd, arena, mode);
+            if (mod == NULL) {
+                PyArena_Free(arena);
+                return NULL;
+            }
+            result = (PyObject*)PyAST_Compile(mod, filename,
+                                              &cf, arena);
+            PyArena_Free(arena);
+        }
+        return result;
+    }
 
-	str = source_as_string(cmd, "compile", "string, bytes, AST or code", &cf);
-	if (str == NULL)
-		return NULL;
+    str = source_as_string(cmd, "compile", "string, bytes, AST or code", &cf);
+    if (str == NULL)
+        return NULL;
 
-	return Py_CompileStringFlags(str, filename, start[mode], &cf);
+    return Py_CompileStringFlags(str, filename, start[mode], &cf);
 }
 
 PyDoc_STRVAR(compile_doc,
@@ -631,11 +631,11 @@
 static PyObject *
 builtin_dir(PyObject *self, PyObject *args)
 {
-	PyObject *arg = NULL;
+    PyObject *arg = NULL;
 
-	if (!PyArg_UnpackTuple(args, "dir", 0, 1, &arg))
-		return NULL;
-	return PyObject_Dir(arg);
+    if (!PyArg_UnpackTuple(args, "dir", 0, 1, &arg))
+        return NULL;
+    return PyObject_Dir(arg);
 }
 
 PyDoc_STRVAR(dir_doc,
@@ -655,11 +655,11 @@
 static PyObject *
 builtin_divmod(PyObject *self, PyObject *args)
 {
-	PyObject *v, *w;
+    PyObject *v, *w;
 
-	if (!PyArg_UnpackTuple(args, "divmod", 2, 2, &v, &w))
-		return NULL;
-	return PyNumber_Divmod(v, w);
+    if (!PyArg_UnpackTuple(args, "divmod", 2, 2, &v, &w))
+        return NULL;
+    return PyNumber_Divmod(v, w);
 }
 
 PyDoc_STRVAR(divmod_doc,
@@ -671,65 +671,65 @@
 static PyObject *
 builtin_eval(PyObject *self, PyObject *args)
 {
-	PyObject *cmd, *result, *tmp = NULL;
-	PyObject *globals = Py_None, *locals = Py_None;
-	char *str;
-	PyCompilerFlags cf;
+    PyObject *cmd, *result, *tmp = NULL;
+    PyObject *globals = Py_None, *locals = Py_None;
+    char *str;
+    PyCompilerFlags cf;
 
-	if (!PyArg_UnpackTuple(args, "eval", 1, 3, &cmd, &globals, &locals))
-		return NULL;
-	if (locals != Py_None && !PyMapping_Check(locals)) {
-		PyErr_SetString(PyExc_TypeError, "locals must be a mapping");
-		return NULL;
-	}
-	if (globals != Py_None && !PyDict_Check(globals)) {
-		PyErr_SetString(PyExc_TypeError, PyMapping_Check(globals) ?
-			"globals must be a real dict; try eval(expr, {}, mapping)"
-			: "globals must be a dict");
-		return NULL;
-	}
-	if (globals == Py_None) {
-		globals = PyEval_GetGlobals();
-		if (locals == Py_None)
-			locals = PyEval_GetLocals();
-	}
-	else if (locals == Py_None)
-		locals = globals;
+    if (!PyArg_UnpackTuple(args, "eval", 1, 3, &cmd, &globals, &locals))
+        return NULL;
+    if (locals != Py_None && !PyMapping_Check(locals)) {
+        PyErr_SetString(PyExc_TypeError, "locals must be a mapping");
+        return NULL;
+    }
+    if (globals != Py_None && !PyDict_Check(globals)) {
+        PyErr_SetString(PyExc_TypeError, PyMapping_Check(globals) ?
+            "globals must be a real dict; try eval(expr, {}, mapping)"
+            : "globals must be a dict");
+        return NULL;
+    }
+    if (globals == Py_None) {
+        globals = PyEval_GetGlobals();
+        if (locals == Py_None)
+            locals = PyEval_GetLocals();
+    }
+    else if (locals == Py_None)
+        locals = globals;
 
-	if (globals == NULL || locals == NULL) {
-		PyErr_SetString(PyExc_TypeError, 
-			"eval must be given globals and locals "
-			"when called without a frame");
-		return NULL;
-	}
+    if (globals == NULL || locals == NULL) {
+        PyErr_SetString(PyExc_TypeError,
+            "eval must be given globals and locals "
+            "when called without a frame");
+        return NULL;
+    }
 
-	if (PyDict_GetItemString(globals, "__builtins__") == NULL) {
-		if (PyDict_SetItemString(globals, "__builtins__",
-					 PyEval_GetBuiltins()) != 0)
-			return NULL;
-	}
+    if (PyDict_GetItemString(globals, "__builtins__") == NULL) {
+        if (PyDict_SetItemString(globals, "__builtins__",
+                                 PyEval_GetBuiltins()) != 0)
+            return NULL;
+    }
 
-	if (PyCode_Check(cmd)) {
-		if (PyCode_GetNumFree((PyCodeObject *)cmd) > 0) {
-			PyErr_SetString(PyExc_TypeError,
-		"code object passed to eval() may not contain free variables");
-			return NULL;
-		}
-		return PyEval_EvalCode((PyCodeObject *) cmd, globals, locals);
-	}
+    if (PyCode_Check(cmd)) {
+        if (PyCode_GetNumFree((PyCodeObject *)cmd) > 0) {
+            PyErr_SetString(PyExc_TypeError,
+        "code object passed to eval() may not contain free variables");
+            return NULL;
+        }
+        return PyEval_EvalCode((PyCodeObject *) cmd, globals, locals);
+    }
 
-	cf.cf_flags = PyCF_SOURCE_IS_UTF8;
-	str = source_as_string(cmd, "eval", "string, bytes or code", &cf);
-	if (str == NULL)
-		return NULL;
+    cf.cf_flags = PyCF_SOURCE_IS_UTF8;
+    str = source_as_string(cmd, "eval", "string, bytes or code", &cf);
+    if (str == NULL)
+        return NULL;
 
-	while (*str == ' ' || *str == '\t')
-		str++;
+    while (*str == ' ' || *str == '\t')
+        str++;
 
-	(void)PyEval_MergeCompilerFlags(&cf);
-	result = PyRun_StringFlags(str, Py_eval_input, globals, locals, &cf);
-	Py_XDECREF(tmp);
-	return result;
+    (void)PyEval_MergeCompilerFlags(&cf);
+    result = PyRun_StringFlags(str, Py_eval_input, globals, locals, &cf);
+    Py_XDECREF(tmp);
+    return result;
 }
 
 PyDoc_STRVAR(eval_doc,
@@ -745,72 +745,72 @@
 static PyObject *
 builtin_exec(PyObject *self, PyObject *args)
 {
-	PyObject *v;
-	PyObject *prog, *globals = Py_None, *locals = Py_None;
-	int plain = 0;
+    PyObject *v;
+    PyObject *prog, *globals = Py_None, *locals = Py_None;
+    int plain = 0;
 
-	if (!PyArg_UnpackTuple(args, "exec", 1, 3, &prog, &globals, &locals))
-		return NULL;
-	
-	if (globals == Py_None) {
-		globals = PyEval_GetGlobals();
-		if (locals == Py_None) {
-			locals = PyEval_GetLocals();
-			plain = 1;
-		}
-		if (!globals || !locals) {
-			PyErr_SetString(PyExc_SystemError,
-					"globals and locals cannot be NULL");
-			return NULL;
-		}
-	}
-	else if (locals == Py_None)
-		locals = globals;
+    if (!PyArg_UnpackTuple(args, "exec", 1, 3, &prog, &globals, &locals))
+        return NULL;
 
-	if (!PyDict_Check(globals)) {
-		PyErr_Format(PyExc_TypeError, "exec() arg 2 must be a dict, not %.100s",
-			     globals->ob_type->tp_name);
-		return NULL;
-	}
-	if (!PyMapping_Check(locals)) {
-		PyErr_Format(PyExc_TypeError,
-		    "arg 3 must be a mapping or None, not %.100s",
-		    locals->ob_type->tp_name);
-		return NULL;
-	}
-	if (PyDict_GetItemString(globals, "__builtins__") == NULL) {
-		if (PyDict_SetItemString(globals, "__builtins__",
-					 PyEval_GetBuiltins()) != 0)
-			return NULL;
-	}
+    if (globals == Py_None) {
+        globals = PyEval_GetGlobals();
+        if (locals == Py_None) {
+            locals = PyEval_GetLocals();
+            plain = 1;
+        }
+        if (!globals || !locals) {
+            PyErr_SetString(PyExc_SystemError,
+                            "globals and locals cannot be NULL");
+            return NULL;
+        }
+    }
+    else if (locals == Py_None)
+        locals = globals;
 
-	if (PyCode_Check(prog)) {
-		if (PyCode_GetNumFree((PyCodeObject *)prog) > 0) {
-			PyErr_SetString(PyExc_TypeError,
-				"code object passed to exec() may not "
-				"contain free variables");
-			return NULL;
-		}
-		v = PyEval_EvalCode((PyCodeObject *) prog, globals, locals);
-	}
-	else {
-		char *str;
-		PyCompilerFlags cf;
-		cf.cf_flags = PyCF_SOURCE_IS_UTF8;
-		str = source_as_string(prog, "exec",
-					     "string, bytes or code", &cf);
-		if (str == NULL)
-			return NULL;
-		if (PyEval_MergeCompilerFlags(&cf))
-			v = PyRun_StringFlags(str, Py_file_input, globals,
-					      locals, &cf);
-		else
-			v = PyRun_String(str, Py_file_input, globals, locals);
-	}
-	if (v == NULL)
-		return NULL;
-	Py_DECREF(v);
-	Py_RETURN_NONE;
+    if (!PyDict_Check(globals)) {
+        PyErr_Format(PyExc_TypeError, "exec() arg 2 must be a dict, not %.100s",
+                     globals->ob_type->tp_name);
+        return NULL;
+    }
+    if (!PyMapping_Check(locals)) {
+        PyErr_Format(PyExc_TypeError,
+            "arg 3 must be a mapping or None, not %.100s",
+            locals->ob_type->tp_name);
+        return NULL;
+    }
+    if (PyDict_GetItemString(globals, "__builtins__") == NULL) {
+        if (PyDict_SetItemString(globals, "__builtins__",
+                                 PyEval_GetBuiltins()) != 0)
+            return NULL;
+    }
+
+    if (PyCode_Check(prog)) {
+        if (PyCode_GetNumFree((PyCodeObject *)prog) > 0) {
+            PyErr_SetString(PyExc_TypeError,
+                "code object passed to exec() may not "
+                "contain free variables");
+            return NULL;
+        }
+        v = PyEval_EvalCode((PyCodeObject *) prog, globals, locals);
+    }
+    else {
+        char *str;
+        PyCompilerFlags cf;
+        cf.cf_flags = PyCF_SOURCE_IS_UTF8;
+        str = source_as_string(prog, "exec",
+                                     "string, bytes or code", &cf);
+        if (str == NULL)
+            return NULL;
+        if (PyEval_MergeCompilerFlags(&cf))
+            v = PyRun_StringFlags(str, Py_file_input, globals,
+                                  locals, &cf);
+        else
+            v = PyRun_String(str, Py_file_input, globals, locals);
+    }
+    if (v == NULL)
+        return NULL;
+    Py_DECREF(v);
+    Py_RETURN_NONE;
 }
 
 PyDoc_STRVAR(exec_doc,
@@ -825,26 +825,26 @@
 static PyObject *
 builtin_getattr(PyObject *self, PyObject *args)
 {
-	PyObject *v, *result, *dflt = NULL;
-	PyObject *name;
+    PyObject *v, *result, *dflt = NULL;
+    PyObject *name;
 
-	if (!PyArg_UnpackTuple(args, "getattr", 2, 3, &v, &name, &dflt))
-		return NULL;
+    if (!PyArg_UnpackTuple(args, "getattr", 2, 3, &v, &name, &dflt))
+        return NULL;
 
-	if (!PyUnicode_Check(name)) {
-		PyErr_SetString(PyExc_TypeError,
-				"getattr(): attribute name must be string");
-		return NULL;
-	}
-	result = PyObject_GetAttr(v, name);
-	if (result == NULL && dflt != NULL &&
-	    PyErr_ExceptionMatches(PyExc_AttributeError))
-	{
-		PyErr_Clear();
-		Py_INCREF(dflt);
-		result = dflt;
-	}
-	return result;
+    if (!PyUnicode_Check(name)) {
+        PyErr_SetString(PyExc_TypeError,
+                        "getattr(): attribute name must be string");
+        return NULL;
+    }
+    result = PyObject_GetAttr(v, name);
+    if (result == NULL && dflt != NULL &&
+        PyErr_ExceptionMatches(PyExc_AttributeError))
+    {
+        PyErr_Clear();
+        Py_INCREF(dflt);
+        result = dflt;
+    }
+    return result;
 }
 
 PyDoc_STRVAR(getattr_doc,
@@ -858,11 +858,11 @@
 static PyObject *
 builtin_globals(PyObject *self)
 {
-	PyObject *d;
+    PyObject *d;
 
-	d = PyEval_GetGlobals();
-	Py_XINCREF(d);
-	return d;
+    d = PyEval_GetGlobals();
+    Py_XINCREF(d);
+    return d;
 }
 
 PyDoc_STRVAR(globals_doc,
@@ -874,29 +874,29 @@
 static PyObject *
 builtin_hasattr(PyObject *self, PyObject *args)
 {
-	PyObject *v;
-	PyObject *name;
+    PyObject *v;
+    PyObject *name;
 
-	if (!PyArg_UnpackTuple(args, "hasattr", 2, 2, &v, &name))
-		return NULL;
-	if (!PyUnicode_Check(name)) {
-		PyErr_SetString(PyExc_TypeError,
-				"hasattr(): attribute name must be string");
-		return NULL;
-	}
-	v = PyObject_GetAttr(v, name);
-	if (v == NULL) {
-		if (!PyErr_ExceptionMatches(PyExc_Exception))
-			return NULL;
-		else {
-			PyErr_Clear();
-			Py_INCREF(Py_False);
-			return Py_False;
-		}
-	}
-	Py_DECREF(v);
-	Py_INCREF(Py_True);
-	return Py_True;
+    if (!PyArg_UnpackTuple(args, "hasattr", 2, 2, &v, &name))
+        return NULL;
+    if (!PyUnicode_Check(name)) {
+        PyErr_SetString(PyExc_TypeError,
+                        "hasattr(): attribute name must be string");
+        return NULL;
+    }
+    v = PyObject_GetAttr(v, name);
+    if (v == NULL) {
+        if (!PyErr_ExceptionMatches(PyExc_Exception))
+            return NULL;
+        else {
+            PyErr_Clear();
+            Py_INCREF(Py_False);
+            return Py_False;
+        }
+    }
+    Py_DECREF(v);
+    Py_INCREF(Py_True);
+    return Py_True;
 }
 
 PyDoc_STRVAR(hasattr_doc,
@@ -909,7 +909,7 @@
 static PyObject *
 builtin_id(PyObject *self, PyObject *v)
 {
-	return PyLong_FromVoidPtr(v);
+    return PyLong_FromVoidPtr(v);
 }
 
 PyDoc_STRVAR(id_doc,
@@ -922,181 +922,181 @@
 /* map object ************************************************************/
 
 typedef struct {
-	PyObject_HEAD
-	PyObject *iters;
-	PyObject *func;
+    PyObject_HEAD
+    PyObject *iters;
+    PyObject *func;
 } mapobject;
 
 static PyObject *
 map_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 {
-	PyObject *it, *iters, *func;
-	mapobject *lz;
-	Py_ssize_t numargs, i;
+    PyObject *it, *iters, *func;
+    mapobject *lz;
+    Py_ssize_t numargs, i;
 
-	if (type == &PyMap_Type && !_PyArg_NoKeywords("map()", kwds))
-		return NULL;
+    if (type == &PyMap_Type && !_PyArg_NoKeywords("map()", kwds))
+        return NULL;
 
-	numargs = PyTuple_Size(args);
-	if (numargs < 2) {
-		PyErr_SetString(PyExc_TypeError,
-		   "map() must have at least two arguments.");
-		return NULL;
-	}
+    numargs = PyTuple_Size(args);
+    if (numargs < 2) {
+        PyErr_SetString(PyExc_TypeError,
+           "map() must have at least two arguments.");
+        return NULL;
+    }
 
-	iters = PyTuple_New(numargs-1);
-	if (iters == NULL)
-		return NULL;
+    iters = PyTuple_New(numargs-1);
+    if (iters == NULL)
+        return NULL;
 
-	for (i=1 ; i<numargs ; i++) {
-		/* Get iterator. */
-		it = PyObject_GetIter(PyTuple_GET_ITEM(args, i));
-		if (it == NULL) {
-			Py_DECREF(iters);
-			return NULL;
-		}
-		PyTuple_SET_ITEM(iters, i-1, it);
-	}
+    for (i=1 ; i<numargs ; i++) {
+        /* Get iterator. */
+        it = PyObject_GetIter(PyTuple_GET_ITEM(args, i));
+        if (it == NULL) {
+            Py_DECREF(iters);
+            return NULL;
+        }
+        PyTuple_SET_ITEM(iters, i-1, it);
+    }
 
-	/* create mapobject structure */
-	lz = (mapobject *)type->tp_alloc(type, 0);
-	if (lz == NULL) {
-		Py_DECREF(iters);
-		return NULL;
-	}
-	lz->iters = iters;
-	func = PyTuple_GET_ITEM(args, 0);
-	Py_INCREF(func);
-	lz->func = func;
+    /* create mapobject structure */
+    lz = (mapobject *)type->tp_alloc(type, 0);
+    if (lz == NULL) {
+        Py_DECREF(iters);
+        return NULL;
+    }
+    lz->iters = iters;
+    func = PyTuple_GET_ITEM(args, 0);
+    Py_INCREF(func);
+    lz->func = func;
 
-	return (PyObject *)lz;
+    return (PyObject *)lz;
 }
 
 static void
 map_dealloc(mapobject *lz)
 {
-	PyObject_GC_UnTrack(lz);
-	Py_XDECREF(lz->iters);
-	Py_XDECREF(lz->func);
-	Py_TYPE(lz)->tp_free(lz);
+    PyObject_GC_UnTrack(lz);
+    Py_XDECREF(lz->iters);
+    Py_XDECREF(lz->func);
+    Py_TYPE(lz)->tp_free(lz);
 }
 
 static int
 map_traverse(mapobject *lz, visitproc visit, void *arg)
 {
-	Py_VISIT(lz->iters);
-	Py_VISIT(lz->func);
-	return 0;
+    Py_VISIT(lz->iters);
+    Py_VISIT(lz->func);
+    return 0;
 }
 
 static PyObject *
 map_next(mapobject *lz)
 {
-	PyObject *val;
-	PyObject *argtuple;
-	PyObject *result;
-	Py_ssize_t numargs, i;
+    PyObject *val;
+    PyObject *argtuple;
+    PyObject *result;
+    Py_ssize_t numargs, i;
 
-	numargs = PyTuple_Size(lz->iters);
-	argtuple = PyTuple_New(numargs);
-	if (argtuple == NULL)
-		return NULL;
+    numargs = PyTuple_Size(lz->iters);
+    argtuple = PyTuple_New(numargs);
+    if (argtuple == NULL)
+        return NULL;
 
-	for (i=0 ; i<numargs ; i++) {
-		val = PyIter_Next(PyTuple_GET_ITEM(lz->iters, i));
-		if (val == NULL) {
-			Py_DECREF(argtuple);
-			return NULL;
-		}
-		PyTuple_SET_ITEM(argtuple, i, val);
-	}
-	result = PyObject_Call(lz->func, argtuple, NULL);
-	Py_DECREF(argtuple);
-	return result;
+    for (i=0 ; i<numargs ; i++) {
+        val = PyIter_Next(PyTuple_GET_ITEM(lz->iters, i));
+        if (val == NULL) {
+            Py_DECREF(argtuple);
+            return NULL;
+        }
+        PyTuple_SET_ITEM(argtuple, i, val);
+    }
+    result = PyObject_Call(lz->func, argtuple, NULL);
+    Py_DECREF(argtuple);
+    return result;
 }
 
 PyDoc_STRVAR(map_doc,
 "map(func, *iterables) --> map object\n\
 \n\
 Make an iterator that computes the function using arguments from\n\
-each of the iterables.	Stops when the shortest iterable is exhausted.");
+each of the iterables.  Stops when the shortest iterable is exhausted.");
 
 PyTypeObject PyMap_Type = {
-	PyVarObject_HEAD_INIT(&PyType_Type, 0)
-	"map",				/* tp_name */
-	sizeof(mapobject),		/* tp_basicsize */
-	0,				/* tp_itemsize */
-	/* methods */
-	(destructor)map_dealloc,	/* tp_dealloc */
-	0,				/* tp_print */
-	0,				/* tp_getattr */
-	0,				/* tp_setattr */
-	0,				/* tp_reserved */
-	0,				/* tp_repr */
-	0,				/* tp_as_number */
-	0,				/* tp_as_sequence */
-	0,				/* tp_as_mapping */
-	0,				/* tp_hash */
-	0,				/* tp_call */
-	0,				/* tp_str */
-	PyObject_GenericGetAttr,	/* tp_getattro */
-	0,				/* tp_setattro */
-	0,				/* tp_as_buffer */
-	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
-		Py_TPFLAGS_BASETYPE,	/* tp_flags */
-	map_doc,			/* tp_doc */
-	(traverseproc)map_traverse,	/* tp_traverse */
-	0,				/* tp_clear */
-	0,				/* tp_richcompare */
-	0,				/* tp_weaklistoffset */
-	PyObject_SelfIter,		/* tp_iter */
-	(iternextfunc)map_next,	/* tp_iternext */
-	0,				/* tp_methods */
-	0,				/* tp_members */
-	0,				/* tp_getset */
-	0,				/* tp_base */
-	0,				/* tp_dict */
-	0,				/* tp_descr_get */
-	0,				/* tp_descr_set */
-	0,				/* tp_dictoffset */
-	0,				/* tp_init */
-	PyType_GenericAlloc,		/* tp_alloc */
-	map_new,			/* tp_new */
-	PyObject_GC_Del,		/* tp_free */
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    "map",                              /* tp_name */
+    sizeof(mapobject),                  /* tp_basicsize */
+    0,                                  /* tp_itemsize */
+    /* methods */
+    (destructor)map_dealloc,            /* tp_dealloc */
+    0,                                  /* tp_print */
+    0,                                  /* tp_getattr */
+    0,                                  /* tp_setattr */
+    0,                                  /* tp_reserved */
+    0,                                  /* tp_repr */
+    0,                                  /* tp_as_number */
+    0,                                  /* tp_as_sequence */
+    0,                                  /* tp_as_mapping */
+    0,                                  /* tp_hash */
+    0,                                  /* tp_call */
+    0,                                  /* tp_str */
+    PyObject_GenericGetAttr,            /* tp_getattro */
+    0,                                  /* tp_setattro */
+    0,                                  /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
+        Py_TPFLAGS_BASETYPE,            /* tp_flags */
+    map_doc,                            /* tp_doc */
+    (traverseproc)map_traverse,         /* tp_traverse */
+    0,                                  /* tp_clear */
+    0,                                  /* tp_richcompare */
+    0,                                  /* tp_weaklistoffset */
+    PyObject_SelfIter,                  /* tp_iter */
+    (iternextfunc)map_next,     /* tp_iternext */
+    0,                                  /* tp_methods */
+    0,                                  /* tp_members */
+    0,                                  /* tp_getset */
+    0,                                  /* tp_base */
+    0,                                  /* tp_dict */
+    0,                                  /* tp_descr_get */
+    0,                                  /* tp_descr_set */
+    0,                                  /* tp_dictoffset */
+    0,                                  /* tp_init */
+    PyType_GenericAlloc,                /* tp_alloc */
+    map_new,                            /* tp_new */
+    PyObject_GC_Del,                    /* tp_free */
 };
 
 static PyObject *
 builtin_next(PyObject *self, PyObject *args)
 {
-	PyObject *it, *res;
-	PyObject *def = NULL;
+    PyObject *it, *res;
+    PyObject *def = NULL;
 
-	if (!PyArg_UnpackTuple(args, "next", 1, 2, &it, &def))
-		return NULL;
-	if (!PyIter_Check(it)) {
-		PyErr_Format(PyExc_TypeError,
-			"%.200s object is not an iterator",
-			it->ob_type->tp_name);
-		return NULL;
-	}
-	
-	res = (*it->ob_type->tp_iternext)(it);
-	if (res != NULL) {
-		return res;
-	} else if (def != NULL) {
-		if (PyErr_Occurred()) {
-			if(!PyErr_ExceptionMatches(PyExc_StopIteration))
-				return NULL;
-			PyErr_Clear();
-		}
-		Py_INCREF(def);
-		return def;
-	} else if (PyErr_Occurred()) {
-		return NULL;
-	} else {
-		PyErr_SetNone(PyExc_StopIteration);
-		return NULL;
-	}
+    if (!PyArg_UnpackTuple(args, "next", 1, 2, &it, &def))
+        return NULL;
+    if (!PyIter_Check(it)) {
+        PyErr_Format(PyExc_TypeError,
+            "%.200s object is not an iterator",
+            it->ob_type->tp_name);
+        return NULL;
+    }
+
+    res = (*it->ob_type->tp_iternext)(it);
+    if (res != NULL) {
+        return res;
+    } else if (def != NULL) {
+        if (PyErr_Occurred()) {
+            if(!PyErr_ExceptionMatches(PyExc_StopIteration))
+                return NULL;
+            PyErr_Clear();
+        }
+        Py_INCREF(def);
+        return def;
+    } else if (PyErr_Occurred()) {
+        return NULL;
+    } else {
+        PyErr_SetNone(PyExc_StopIteration);
+        return NULL;
+    }
 }
 
 PyDoc_STRVAR(next_doc,
@@ -1109,16 +1109,16 @@
 static PyObject *
 builtin_setattr(PyObject *self, PyObject *args)
 {
-	PyObject *v;
-	PyObject *name;
-	PyObject *value;
+    PyObject *v;
+    PyObject *name;
+    PyObject *value;
 
-	if (!PyArg_UnpackTuple(args, "setattr", 3, 3, &v, &name, &value))
-		return NULL;
-	if (PyObject_SetAttr(v, name, value) != 0)
-		return NULL;
-	Py_INCREF(Py_None);
-	return Py_None;
+    if (!PyArg_UnpackTuple(args, "setattr", 3, 3, &v, &name, &value))
+        return NULL;
+    if (PyObject_SetAttr(v, name, value) != 0)
+        return NULL;
+    Py_INCREF(Py_None);
+    return Py_None;
 }
 
 PyDoc_STRVAR(setattr_doc,
@@ -1131,15 +1131,15 @@
 static PyObject *
 builtin_delattr(PyObject *self, PyObject *args)
 {
-	PyObject *v;
-	PyObject *name;
+    PyObject *v;
+    PyObject *name;
 
-	if (!PyArg_UnpackTuple(args, "delattr", 2, 2, &v, &name))
-		return NULL;
-	if (PyObject_SetAttr(v, name, (PyObject *)NULL) != 0)
-		return NULL;
-	Py_INCREF(Py_None);
-	return Py_None;
+    if (!PyArg_UnpackTuple(args, "delattr", 2, 2, &v, &name))
+        return NULL;
+    if (PyObject_SetAttr(v, name, (PyObject *)NULL) != 0)
+        return NULL;
+    Py_INCREF(Py_None);
+    return Py_None;
 }
 
 PyDoc_STRVAR(delattr_doc,
@@ -1152,12 +1152,12 @@
 static PyObject *
 builtin_hash(PyObject *self, PyObject *v)
 {
-	long x;
+    long x;
 
-	x = PyObject_Hash(v);
-	if (x == -1)
-		return NULL;
-	return PyLong_FromLong(x);
+    x = PyObject_Hash(v);
+    if (x == -1)
+        return NULL;
+    return PyLong_FromLong(x);
 }
 
 PyDoc_STRVAR(hash_doc,
@@ -1170,7 +1170,7 @@
 static PyObject *
 builtin_hex(PyObject *self, PyObject *v)
 {
-	return PyNumber_ToBase(v, 16);
+    return PyNumber_ToBase(v, 16);
 }
 
 PyDoc_STRVAR(hex_doc,
@@ -1182,18 +1182,18 @@
 static PyObject *
 builtin_iter(PyObject *self, PyObject *args)
 {
-	PyObject *v, *w = NULL;
+    PyObject *v, *w = NULL;
 
-	if (!PyArg_UnpackTuple(args, "iter", 1, 2, &v, &w))
-		return NULL;
-	if (w == NULL)
-		return PyObject_GetIter(v);
-	if (!PyCallable_Check(v)) {
-		PyErr_SetString(PyExc_TypeError,
-				"iter(v, w): v must be callable");
-		return NULL;
-	}
-	return PyCallIter_New(v, w);
+    if (!PyArg_UnpackTuple(args, "iter", 1, 2, &v, &w))
+        return NULL;
+    if (w == NULL)
+        return PyObject_GetIter(v);
+    if (!PyCallable_Check(v)) {
+        PyErr_SetString(PyExc_TypeError,
+                        "iter(v, w): v must be callable");
+        return NULL;
+    }
+    return PyCallIter_New(v, w);
 }
 
 PyDoc_STRVAR(iter_doc,
@@ -1208,12 +1208,12 @@
 static PyObject *
 builtin_len(PyObject *self, PyObject *v)
 {
-	Py_ssize_t res;
+    Py_ssize_t res;
 
-	res = PyObject_Size(v);
-	if (res < 0 && PyErr_Occurred())
-		return NULL;
-	return PyLong_FromSsize_t(res);
+    res = PyObject_Size(v);
+    if (res < 0 && PyErr_Occurred())
+        return NULL;
+    return PyLong_FromSsize_t(res);
 }
 
 PyDoc_STRVAR(len_doc,
@@ -1225,11 +1225,11 @@
 static PyObject *
 builtin_locals(PyObject *self)
 {
-	PyObject *d;
+    PyObject *d;
 
-	d = PyEval_GetLocals();
-	Py_XINCREF(d);
-	return d;
+    d = PyEval_GetLocals();
+    Py_XINCREF(d);
+    return d;
 }
 
 PyDoc_STRVAR(locals_doc,
@@ -1241,96 +1241,96 @@
 static PyObject *
 min_max(PyObject *args, PyObject *kwds, int op)
 {
-	PyObject *v, *it, *item, *val, *maxitem, *maxval, *keyfunc=NULL;
-	const char *name = op == Py_LT ? "min" : "max";
+    PyObject *v, *it, *item, *val, *maxitem, *maxval, *keyfunc=NULL;
+    const char *name = op == Py_LT ? "min" : "max";
 
-	if (PyTuple_Size(args) > 1)
-		v = args;
-	else if (!PyArg_UnpackTuple(args, (char *)name, 1, 1, &v))
-		return NULL;
+    if (PyTuple_Size(args) > 1)
+        v = args;
+    else if (!PyArg_UnpackTuple(args, (char *)name, 1, 1, &v))
+        return NULL;
 
-	if (kwds != NULL && PyDict_Check(kwds) && PyDict_Size(kwds)) {
-		keyfunc = PyDict_GetItemString(kwds, "key");
-		if (PyDict_Size(kwds)!=1  ||  keyfunc == NULL) {
-			PyErr_Format(PyExc_TypeError,
-				"%s() got an unexpected keyword argument", name);
-			return NULL;
-		}
-		Py_INCREF(keyfunc);
-	}
+    if (kwds != NULL && PyDict_Check(kwds) && PyDict_Size(kwds)) {
+        keyfunc = PyDict_GetItemString(kwds, "key");
+        if (PyDict_Size(kwds)!=1  ||  keyfunc == NULL) {
+            PyErr_Format(PyExc_TypeError,
+                "%s() got an unexpected keyword argument", name);
+            return NULL;
+        }
+        Py_INCREF(keyfunc);
+    }
 
-	it = PyObject_GetIter(v);
-	if (it == NULL) {
-		Py_XDECREF(keyfunc);
-		return NULL;
-	}
+    it = PyObject_GetIter(v);
+    if (it == NULL) {
+        Py_XDECREF(keyfunc);
+        return NULL;
+    }
 
-	maxitem = NULL; /* the result */
-	maxval = NULL;  /* the value associated with the result */
-	while (( item = PyIter_Next(it) )) {
-		/* get the value from the key function */
-		if (keyfunc != NULL) {
-			val = PyObject_CallFunctionObjArgs(keyfunc, item, NULL);
-			if (val == NULL)
-				goto Fail_it_item;
-		}
-		/* no key function; the value is the item */
-		else {
-			val = item;
-			Py_INCREF(val);
-		}
+    maxitem = NULL; /* the result */
+    maxval = NULL;  /* the value associated with the result */
+    while (( item = PyIter_Next(it) )) {
+        /* get the value from the key function */
+        if (keyfunc != NULL) {
+            val = PyObject_CallFunctionObjArgs(keyfunc, item, NULL);
+            if (val == NULL)
+                goto Fail_it_item;
+        }
+        /* no key function; the value is the item */
+        else {
+            val = item;
+            Py_INCREF(val);
+        }
 
-		/* maximum value and item are unset; set them */
-		if (maxval == NULL) {
-			maxitem = item;
-			maxval = val;
-		}
-		/* maximum value and item are set; update them as necessary */
-		else {
-			int cmp = PyObject_RichCompareBool(val, maxval, op);
-			if (cmp < 0)
-				goto Fail_it_item_and_val;
-			else if (cmp > 0) {
-				Py_DECREF(maxval);
-				Py_DECREF(maxitem);
-				maxval = val;
-				maxitem = item;
-			}
-			else {
-				Py_DECREF(item);
-				Py_DECREF(val);
-			}
-		}
-	}
-	if (PyErr_Occurred())
-		goto Fail_it;
-	if (maxval == NULL) {
-		PyErr_Format(PyExc_ValueError,
-			     "%s() arg is an empty sequence", name);
-		assert(maxitem == NULL);
-	}
-	else
-		Py_DECREF(maxval);
-	Py_DECREF(it);
-	Py_XDECREF(keyfunc);
-	return maxitem;
+        /* maximum value and item are unset; set them */
+        if (maxval == NULL) {
+            maxitem = item;
+            maxval = val;
+        }
+        /* maximum value and item are set; update them as necessary */
+        else {
+            int cmp = PyObject_RichCompareBool(val, maxval, op);
+            if (cmp < 0)
+                goto Fail_it_item_and_val;
+            else if (cmp > 0) {
+                Py_DECREF(maxval);
+                Py_DECREF(maxitem);
+                maxval = val;
+                maxitem = item;
+            }
+            else {
+                Py_DECREF(item);
+                Py_DECREF(val);
+            }
+        }
+    }
+    if (PyErr_Occurred())
+        goto Fail_it;
+    if (maxval == NULL) {
+        PyErr_Format(PyExc_ValueError,
+                     "%s() arg is an empty sequence", name);
+        assert(maxitem == NULL);
+    }
+    else
+        Py_DECREF(maxval);
+    Py_DECREF(it);
+    Py_XDECREF(keyfunc);
+    return maxitem;
 
 Fail_it_item_and_val:
-	Py_DECREF(val);
+    Py_DECREF(val);
 Fail_it_item:
-	Py_DECREF(item);
+    Py_DECREF(item);
 Fail_it:
-	Py_XDECREF(maxval);
-	Py_XDECREF(maxitem);
-	Py_DECREF(it);
-	Py_XDECREF(keyfunc);
-	return NULL;
+    Py_XDECREF(maxval);
+    Py_XDECREF(maxitem);
+    Py_DECREF(it);
+    Py_XDECREF(keyfunc);
+    return NULL;
 }
 
 static PyObject *
 builtin_min(PyObject *self, PyObject *args, PyObject *kwds)
 {
-	return min_max(args, kwds, Py_LT);
+    return min_max(args, kwds, Py_LT);
 }
 
 PyDoc_STRVAR(min_doc,
@@ -1344,7 +1344,7 @@
 static PyObject *
 builtin_max(PyObject *self, PyObject *args, PyObject *kwds)
 {
-	return min_max(args, kwds, Py_GT);
+    return min_max(args, kwds, Py_GT);
 }
 
 PyDoc_STRVAR(max_doc,
@@ -1358,7 +1358,7 @@
 static PyObject *
 builtin_oct(PyObject *self, PyObject *v)
 {
-	return PyNumber_ToBase(v, 8);
+    return PyNumber_ToBase(v, 8);
 }
 
 PyDoc_STRVAR(oct_doc,
@@ -1370,56 +1370,56 @@
 static PyObject *
 builtin_ord(PyObject *self, PyObject* obj)
 {
-	long ord;
-	Py_ssize_t size;
+    long ord;
+    Py_ssize_t size;
 
-	if (PyBytes_Check(obj)) {
-		size = PyBytes_GET_SIZE(obj);
-		if (size == 1) {
-			ord = (long)((unsigned char)*PyBytes_AS_STRING(obj));
-			return PyLong_FromLong(ord);
-		}
-	}
-	else if (PyUnicode_Check(obj)) {
-		size = PyUnicode_GET_SIZE(obj);
-		if (size == 1) {
-			ord = (long)*PyUnicode_AS_UNICODE(obj);
-			return PyLong_FromLong(ord);
-		}
+    if (PyBytes_Check(obj)) {
+        size = PyBytes_GET_SIZE(obj);
+        if (size == 1) {
+            ord = (long)((unsigned char)*PyBytes_AS_STRING(obj));
+            return PyLong_FromLong(ord);
+        }
+    }
+    else if (PyUnicode_Check(obj)) {
+        size = PyUnicode_GET_SIZE(obj);
+        if (size == 1) {
+            ord = (long)*PyUnicode_AS_UNICODE(obj);
+            return PyLong_FromLong(ord);
+        }
 #ifndef Py_UNICODE_WIDE
-		if (size == 2) {
-			/* Decode a valid surrogate pair */
-			int c0 = PyUnicode_AS_UNICODE(obj)[0];
-			int c1 = PyUnicode_AS_UNICODE(obj)[1];
-			if (0xD800 <= c0 && c0 <= 0xDBFF &&
-			    0xDC00 <= c1 && c1 <= 0xDFFF) {
-				ord = ((((c0 & 0x03FF) << 10) | (c1 & 0x03FF)) +
-				       0x00010000);
-				return PyLong_FromLong(ord);
-			}
-		}
+        if (size == 2) {
+            /* Decode a valid surrogate pair */
+            int c0 = PyUnicode_AS_UNICODE(obj)[0];
+            int c1 = PyUnicode_AS_UNICODE(obj)[1];
+            if (0xD800 <= c0 && c0 <= 0xDBFF &&
+                0xDC00 <= c1 && c1 <= 0xDFFF) {
+                ord = ((((c0 & 0x03FF) << 10) | (c1 & 0x03FF)) +
+                       0x00010000);
+                return PyLong_FromLong(ord);
+            }
+        }
 #endif
-	}
-	else if (PyByteArray_Check(obj)) {
-		/* XXX Hopefully this is temporary */
-		size = PyByteArray_GET_SIZE(obj);
-		if (size == 1) {
-			ord = (long)((unsigned char)*PyByteArray_AS_STRING(obj));
-			return PyLong_FromLong(ord);
-		}
-	}
-	else {
-		PyErr_Format(PyExc_TypeError,
-			     "ord() expected string of length 1, but " \
-			     "%.200s found", obj->ob_type->tp_name);
-		return NULL;
-	}
+    }
+    else if (PyByteArray_Check(obj)) {
+        /* XXX Hopefully this is temporary */
+        size = PyByteArray_GET_SIZE(obj);
+        if (size == 1) {
+            ord = (long)((unsigned char)*PyByteArray_AS_STRING(obj));
+            return PyLong_FromLong(ord);
+        }
+    }
+    else {
+        PyErr_Format(PyExc_TypeError,
+                     "ord() expected string of length 1, but " \
+                     "%.200s found", obj->ob_type->tp_name);
+        return NULL;
+    }
 
-	PyErr_Format(PyExc_TypeError,
-		     "ord() expected a character, "
-		     "but string of length %zd found",
-		     size);
-	return NULL;
+    PyErr_Format(PyExc_TypeError,
+                 "ord() expected a character, "
+                 "but string of length %zd found",
+                 size);
+    return NULL;
 }
 
 PyDoc_VAR(ord_doc) = PyDoc_STR(
@@ -1438,11 +1438,11 @@
 static PyObject *
 builtin_pow(PyObject *self, PyObject *args)
 {
-	PyObject *v, *w, *z = Py_None;
+    PyObject *v, *w, *z = Py_None;
 
-	if (!PyArg_UnpackTuple(args, "pow", 2, 3, &v, &w, &z))
-		return NULL;
-	return PyNumber_Power(v, w, z);
+    if (!PyArg_UnpackTuple(args, "pow", 2, 3, &v, &w, &z))
+        return NULL;
+    return PyNumber_Power(v, w, z);
 }
 
 PyDoc_STRVAR(pow_doc,
@@ -1456,68 +1456,68 @@
 static PyObject *
 builtin_print(PyObject *self, PyObject *args, PyObject *kwds)
 {
-	static char *kwlist[] = {"sep", "end", "file", 0};
-	static PyObject *dummy_args;
-	PyObject *sep = NULL, *end = NULL, *file = NULL;
-	int i, err;
+    static char *kwlist[] = {"sep", "end", "file", 0};
+    static PyObject *dummy_args;
+    PyObject *sep = NULL, *end = NULL, *file = NULL;
+    int i, err;
 
-	if (dummy_args == NULL) {
-		if (!(dummy_args = PyTuple_New(0)))
-			return NULL;
-	}
-	if (!PyArg_ParseTupleAndKeywords(dummy_args, kwds, "|OOO:print",
-					 kwlist, &sep, &end, &file))
-		return NULL;
-	if (file == NULL || file == Py_None) {
-		file = PySys_GetObject("stdout");
-		/* sys.stdout may be None when FILE* stdout isn't connected */
-		if (file == Py_None)
-			Py_RETURN_NONE;
-	}
+    if (dummy_args == NULL) {
+        if (!(dummy_args = PyTuple_New(0)))
+            return NULL;
+    }
+    if (!PyArg_ParseTupleAndKeywords(dummy_args, kwds, "|OOO:print",
+                                     kwlist, &sep, &end, &file))
+        return NULL;
+    if (file == NULL || file == Py_None) {
+        file = PySys_GetObject("stdout");
+        /* sys.stdout may be None when FILE* stdout isn't connected */
+        if (file == Py_None)
+            Py_RETURN_NONE;
+    }
 
-	if (sep == Py_None) {
-		sep = NULL;
-	}
-	else if (sep && !PyUnicode_Check(sep)) {
-		PyErr_Format(PyExc_TypeError,
-			     "sep must be None or a string, not %.200s",
-			     sep->ob_type->tp_name);
-		return NULL;
-	}
-	if (end == Py_None) {
-		end = NULL;
-	}
-	else if (end && !PyUnicode_Check(end)) {
-		PyErr_Format(PyExc_TypeError,
-			     "end must be None or a string, not %.200s",
-			     end->ob_type->tp_name);
-		return NULL;
-	}
+    if (sep == Py_None) {
+        sep = NULL;
+    }
+    else if (sep && !PyUnicode_Check(sep)) {
+        PyErr_Format(PyExc_TypeError,
+                     "sep must be None or a string, not %.200s",
+                     sep->ob_type->tp_name);
+        return NULL;
+    }
+    if (end == Py_None) {
+        end = NULL;
+    }
+    else if (end && !PyUnicode_Check(end)) {
+        PyErr_Format(PyExc_TypeError,
+                     "end must be None or a string, not %.200s",
+                     end->ob_type->tp_name);
+        return NULL;
+    }
 
-	for (i = 0; i < PyTuple_Size(args); i++) {
-		if (i > 0) {
-			if (sep == NULL)
-				err = PyFile_WriteString(" ", file);
-			else
-				err = PyFile_WriteObject(sep, file,
-							 Py_PRINT_RAW);
-			if (err)
-				return NULL;
-		}
-		err = PyFile_WriteObject(PyTuple_GetItem(args, i), file,
-					 Py_PRINT_RAW);
-		if (err)
-			return NULL;
-	}
+    for (i = 0; i < PyTuple_Size(args); i++) {
+        if (i > 0) {
+            if (sep == NULL)
+                err = PyFile_WriteString(" ", file);
+            else
+                err = PyFile_WriteObject(sep, file,
+                                         Py_PRINT_RAW);
+            if (err)
+                return NULL;
+        }
+        err = PyFile_WriteObject(PyTuple_GetItem(args, i), file,
+                                 Py_PRINT_RAW);
+        if (err)
+            return NULL;
+    }
 
-	if (end == NULL)
-		err = PyFile_WriteString("\n", file);
-	else
-		err = PyFile_WriteObject(end, file, Py_PRINT_RAW);
-	if (err)
-		return NULL;
+    if (end == NULL)
+        err = PyFile_WriteString("\n", file);
+    else
+        err = PyFile_WriteObject(end, file, Py_PRINT_RAW);
+    if (err)
+        return NULL;
 
-	Py_RETURN_NONE;
+    Py_RETURN_NONE;
 }
 
 PyDoc_STRVAR(print_doc,
@@ -1533,164 +1533,164 @@
 static PyObject *
 builtin_input(PyObject *self, PyObject *args)
 {
-	PyObject *promptarg = NULL;
-	PyObject *fin = PySys_GetObject("stdin");
-	PyObject *fout = PySys_GetObject("stdout");
-	PyObject *ferr = PySys_GetObject("stderr");
-	PyObject *tmp;
-	long fd;
-	int tty;
+    PyObject *promptarg = NULL;
+    PyObject *fin = PySys_GetObject("stdin");
+    PyObject *fout = PySys_GetObject("stdout");
+    PyObject *ferr = PySys_GetObject("stderr");
+    PyObject *tmp;
+    long fd;
+    int tty;
 
-	/* Parse arguments */
-	if (!PyArg_UnpackTuple(args, "input", 0, 1, &promptarg))
-		return NULL;
+    /* Parse arguments */
+    if (!PyArg_UnpackTuple(args, "input", 0, 1, &promptarg))
+        return NULL;
 
-	/* Check that stdin/out/err are intact */
-	if (fin == NULL || fin == Py_None) {
-		PyErr_SetString(PyExc_RuntimeError,
-				"input(): lost sys.stdin");
-		return NULL;
-	}
-	if (fout == NULL || fout == Py_None) {
-		PyErr_SetString(PyExc_RuntimeError,
-				"input(): lost sys.stdout");
-		return NULL;
-	}
-	if (ferr == NULL || ferr == Py_None) {
-		PyErr_SetString(PyExc_RuntimeError,
-				"input(): lost sys.stderr");
-		return NULL;
-	}
+    /* Check that stdin/out/err are intact */
+    if (fin == NULL || fin == Py_None) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "input(): lost sys.stdin");
+        return NULL;
+    }
+    if (fout == NULL || fout == Py_None) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "input(): lost sys.stdout");
+        return NULL;
+    }
+    if (ferr == NULL || ferr == Py_None) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "input(): lost sys.stderr");
+        return NULL;
+    }
 
-	/* First of all, flush stderr */
-	tmp = PyObject_CallMethod(ferr, "flush", "");
-	if (tmp == NULL)
-		PyErr_Clear();
-	else
-		Py_DECREF(tmp);
+    /* First of all, flush stderr */
+    tmp = PyObject_CallMethod(ferr, "flush", "");
+    if (tmp == NULL)
+        PyErr_Clear();
+    else
+        Py_DECREF(tmp);
 
-	/* We should only use (GNU) readline if Python's sys.stdin and
-	   sys.stdout are the same as C's stdin and stdout, because we
-	   need to pass it those. */
-	tmp = PyObject_CallMethod(fin, "fileno", "");
-	if (tmp == NULL) {
-		PyErr_Clear();
-		tty = 0;
-	}
-	else {
-		fd = PyLong_AsLong(tmp);
-		Py_DECREF(tmp);
-		if (fd < 0 && PyErr_Occurred())
-			return NULL;
-		tty = fd == fileno(stdin) && isatty(fd);
-	}
-	if (tty) {
-		tmp = PyObject_CallMethod(fout, "fileno", "");
-		if (tmp == NULL)
-			PyErr_Clear();
-		else {
-			fd = PyLong_AsLong(tmp);
-			Py_DECREF(tmp);
-			if (fd < 0 && PyErr_Occurred())
-				return NULL;
-			tty = fd == fileno(stdout) && isatty(fd);
-		}
-	}
+    /* We should only use (GNU) readline if Python's sys.stdin and
+       sys.stdout are the same as C's stdin and stdout, because we
+       need to pass it those. */
+    tmp = PyObject_CallMethod(fin, "fileno", "");
+    if (tmp == NULL) {
+        PyErr_Clear();
+        tty = 0;
+    }
+    else {
+        fd = PyLong_AsLong(tmp);
+        Py_DECREF(tmp);
+        if (fd < 0 && PyErr_Occurred())
+            return NULL;
+        tty = fd == fileno(stdin) && isatty(fd);
+    }
+    if (tty) {
+        tmp = PyObject_CallMethod(fout, "fileno", "");
+        if (tmp == NULL)
+            PyErr_Clear();
+        else {
+            fd = PyLong_AsLong(tmp);
+            Py_DECREF(tmp);
+            if (fd < 0 && PyErr_Occurred())
+                return NULL;
+            tty = fd == fileno(stdout) && isatty(fd);
+        }
+    }
 
-	/* If we're interactive, use (GNU) readline */
-	if (tty) {
-		PyObject *po;
-		char *prompt;
-		char *s;
-		PyObject *stdin_encoding;
-		PyObject *result;
+    /* If we're interactive, use (GNU) readline */
+    if (tty) {
+        PyObject *po;
+        char *prompt;
+        char *s;
+        PyObject *stdin_encoding;
+        PyObject *result;
 
-		stdin_encoding = PyObject_GetAttrString(fin, "encoding");
-		if (!stdin_encoding)
-			/* stdin is a text stream, so it must have an
-			   encoding. */
-			return NULL;
-		tmp = PyObject_CallMethod(fout, "flush", "");
-		if (tmp == NULL)
-			PyErr_Clear();
-		else
-			Py_DECREF(tmp);
-		if (promptarg != NULL) {
-			PyObject *stringpo;
-			PyObject *stdout_encoding;
-			stdout_encoding = PyObject_GetAttrString(fout,
-								 "encoding");
-			if (stdout_encoding == NULL) {
-				Py_DECREF(stdin_encoding);
-				return NULL;
-			}
-			stringpo = PyObject_Str(promptarg);
-			if (stringpo == NULL) {
-				Py_DECREF(stdin_encoding);
-				Py_DECREF(stdout_encoding);
-				return NULL;
-			}
-			po = PyUnicode_AsEncodedString(stringpo,
-				_PyUnicode_AsString(stdout_encoding), NULL);
-			Py_DECREF(stdout_encoding);
-			Py_DECREF(stringpo);
-			if (po == NULL) {
-				Py_DECREF(stdin_encoding);
-				return NULL;
-			}
-			prompt = PyBytes_AsString(po);
-			if (prompt == NULL) {
-				Py_DECREF(stdin_encoding);
-				Py_DECREF(po);
-				return NULL;
-			}
-		}
-		else {
-			po = NULL;
-			prompt = "";
-		}
-		s = PyOS_Readline(stdin, stdout, prompt);
-		Py_XDECREF(po);
-		if (s == NULL) {
-			if (!PyErr_Occurred())
-				PyErr_SetNone(PyExc_KeyboardInterrupt);
-			Py_DECREF(stdin_encoding);
-			return NULL;
-		}
-		if (*s == '\0') {
-			PyErr_SetNone(PyExc_EOFError);
-			result = NULL;
-		}
-		else { /* strip trailing '\n' */
-			size_t len = strlen(s);
-			if (len > PY_SSIZE_T_MAX) {
-				PyErr_SetString(PyExc_OverflowError,
-						"input: input too long");
-				result = NULL;
-			}
-			else {
-				result = PyUnicode_Decode
-					(s, len-1,
-					 _PyUnicode_AsString(stdin_encoding),
-					 NULL);
-			}
-		}
-		Py_DECREF(stdin_encoding);
-		PyMem_FREE(s);
-		return result;
-	}
+        stdin_encoding = PyObject_GetAttrString(fin, "encoding");
+        if (!stdin_encoding)
+            /* stdin is a text stream, so it must have an
+               encoding. */
+            return NULL;
+        tmp = PyObject_CallMethod(fout, "flush", "");
+        if (tmp == NULL)
+            PyErr_Clear();
+        else
+            Py_DECREF(tmp);
+        if (promptarg != NULL) {
+            PyObject *stringpo;
+            PyObject *stdout_encoding;
+            stdout_encoding = PyObject_GetAttrString(fout,
+                                                     "encoding");
+            if (stdout_encoding == NULL) {
+                Py_DECREF(stdin_encoding);
+                return NULL;
+            }
+            stringpo = PyObject_Str(promptarg);
+            if (stringpo == NULL) {
+                Py_DECREF(stdin_encoding);
+                Py_DECREF(stdout_encoding);
+                return NULL;
+            }
+            po = PyUnicode_AsEncodedString(stringpo,
+                _PyUnicode_AsString(stdout_encoding), NULL);
+            Py_DECREF(stdout_encoding);
+            Py_DECREF(stringpo);
+            if (po == NULL) {
+                Py_DECREF(stdin_encoding);
+                return NULL;
+            }
+            prompt = PyBytes_AsString(po);
+            if (prompt == NULL) {
+                Py_DECREF(stdin_encoding);
+                Py_DECREF(po);
+                return NULL;
+            }
+        }
+        else {
+            po = NULL;
+            prompt = "";
+        }
+        s = PyOS_Readline(stdin, stdout, prompt);
+        Py_XDECREF(po);
+        if (s == NULL) {
+            if (!PyErr_Occurred())
+                PyErr_SetNone(PyExc_KeyboardInterrupt);
+            Py_DECREF(stdin_encoding);
+            return NULL;
+        }
+        if (*s == '\0') {
+            PyErr_SetNone(PyExc_EOFError);
+            result = NULL;
+        }
+        else { /* strip trailing '\n' */
+            size_t len = strlen(s);
+            if (len > PY_SSIZE_T_MAX) {
+                PyErr_SetString(PyExc_OverflowError,
+                                "input: input too long");
+                result = NULL;
+            }
+            else {
+                result = PyUnicode_Decode
+                    (s, len-1,
+                     _PyUnicode_AsString(stdin_encoding),
+                     NULL);
+            }
+        }
+        Py_DECREF(stdin_encoding);
+        PyMem_FREE(s);
+        return result;
+    }
 
-	/* Fallback if we're not interactive */
-	if (promptarg != NULL) {
-		if (PyFile_WriteObject(promptarg, fout, Py_PRINT_RAW) != 0)
-			return NULL;
-	}
-	tmp = PyObject_CallMethod(fout, "flush", "");
-	if (tmp == NULL)
-		PyErr_Clear();
-	else
-		Py_DECREF(tmp);
-	return PyFile_GetLine(fin, -1);
+    /* Fallback if we're not interactive */
+    if (promptarg != NULL) {
+        if (PyFile_WriteObject(promptarg, fout, Py_PRINT_RAW) != 0)
+            return NULL;
+    }
+    tmp = PyObject_CallMethod(fout, "flush", "");
+    if (tmp == NULL)
+        PyErr_Clear();
+    else
+        Py_DECREF(tmp);
+    return PyFile_GetLine(fin, -1);
 }
 
 PyDoc_STRVAR(input_doc,
@@ -1705,7 +1705,7 @@
 static PyObject *
 builtin_repr(PyObject *self, PyObject *v)
 {
-	return PyObject_Repr(v);
+    return PyObject_Repr(v);
 }
 
 PyDoc_STRVAR(repr_doc,
@@ -1718,38 +1718,38 @@
 static PyObject *
 builtin_round(PyObject *self, PyObject *args, PyObject *kwds)
 {
-	static PyObject *round_str = NULL;
-	PyObject *ndigits = NULL;
-	static char *kwlist[] = {"number", "ndigits", 0};
-	PyObject *number, *round;
+    static PyObject *round_str = NULL;
+    PyObject *ndigits = NULL;
+    static char *kwlist[] = {"number", "ndigits", 0};
+    PyObject *number, *round;
 
-	if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|O:round",
-					 kwlist, &number, &ndigits))
-		return NULL;
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|O:round",
+                                     kwlist, &number, &ndigits))
+        return NULL;
 
-	if (Py_TYPE(number)->tp_dict == NULL) {
-		if (PyType_Ready(Py_TYPE(number)) < 0)
-			return NULL;
-	}
+    if (Py_TYPE(number)->tp_dict == NULL) {
+        if (PyType_Ready(Py_TYPE(number)) < 0)
+            return NULL;
+    }
 
-	if (round_str == NULL) {
-		round_str = PyUnicode_InternFromString("__round__");
-		if (round_str == NULL)
-			return NULL;
-	}
+    if (round_str == NULL) {
+        round_str = PyUnicode_InternFromString("__round__");
+        if (round_str == NULL)
+            return NULL;
+    }
 
-	round = _PyType_Lookup(Py_TYPE(number), round_str);
-	if (round == NULL) {
-		PyErr_Format(PyExc_TypeError,
-			     "type %.100s doesn't define __round__ method",
-			     Py_TYPE(number)->tp_name);
-		return NULL;
-	}
+    round = _PyType_Lookup(Py_TYPE(number), round_str);
+    if (round == NULL) {
+        PyErr_Format(PyExc_TypeError,
+                     "type %.100s doesn't define __round__ method",
+                     Py_TYPE(number)->tp_name);
+        return NULL;
+    }
 
-	if (ndigits == NULL)
-		return PyObject_CallFunction(round, "O", number);
-	else
-		return PyObject_CallFunction(round, "OO", number, ndigits);
+    if (ndigits == NULL)
+        return PyObject_CallFunction(round, "O", number);
+    else
+        return PyObject_CallFunction(round, "OO", number, ndigits);
 }
 
 PyDoc_STRVAR(round_doc,
@@ -1763,42 +1763,42 @@
 static PyObject *
 builtin_sorted(PyObject *self, PyObject *args, PyObject *kwds)
 {
-	PyObject *newlist, *v, *seq, *keyfunc=NULL, *newargs;
-	PyObject *callable;
-	static char *kwlist[] = {"iterable", "key", "reverse", 0};
-	int reverse;
+    PyObject *newlist, *v, *seq, *keyfunc=NULL, *newargs;
+    PyObject *callable;
+    static char *kwlist[] = {"iterable", "key", "reverse", 0};
+    int reverse;
 
-	/* args 1-3 should match listsort in Objects/listobject.c */
-	if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|Oi:sorted",
-		kwlist, &seq, &keyfunc, &reverse))
-		return NULL;
+    /* args 1-3 should match listsort in Objects/listobject.c */
+    if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|Oi:sorted",
+        kwlist, &seq, &keyfunc, &reverse))
+        return NULL;
 
-	newlist = PySequence_List(seq);
-	if (newlist == NULL)
-		return NULL;
+    newlist = PySequence_List(seq);
+    if (newlist == NULL)
+        return NULL;
 
-	callable = PyObject_GetAttrString(newlist, "sort");
-	if (callable == NULL) {
-		Py_DECREF(newlist);
-		return NULL;
-	}
+    callable = PyObject_GetAttrString(newlist, "sort");
+    if (callable == NULL) {
+        Py_DECREF(newlist);
+        return NULL;
+    }
 
-	newargs = PyTuple_GetSlice(args, 1, 4);
-	if (newargs == NULL) {
-		Py_DECREF(newlist);
-		Py_DECREF(callable);
-		return NULL;
-	}
+    newargs = PyTuple_GetSlice(args, 1, 4);
+    if (newargs == NULL) {
+        Py_DECREF(newlist);
+        Py_DECREF(callable);
+        return NULL;
+    }
 
-	v = PyObject_Call(callable, newargs, kwds);
-	Py_DECREF(newargs);
-	Py_DECREF(callable);
-	if (v == NULL) {
-		Py_DECREF(newlist);
-		return NULL;
-	}
-	Py_DECREF(v);
-	return newlist;
+    v = PyObject_Call(callable, newargs, kwds);
+    Py_DECREF(newargs);
+    Py_DECREF(callable);
+    if (v == NULL) {
+        Py_DECREF(newlist);
+        return NULL;
+    }
+    Py_DECREF(v);
+    return newlist;
 }
 
 PyDoc_STRVAR(sorted_doc,
@@ -1807,30 +1807,30 @@
 static PyObject *
 builtin_vars(PyObject *self, PyObject *args)
 {
-	PyObject *v = NULL;
-	PyObject *d;
+    PyObject *v = NULL;
+    PyObject *d;
 
-	if (!PyArg_UnpackTuple(args, "vars", 0, 1, &v))
-		return NULL;
-	if (v == NULL) {
-		d = PyEval_GetLocals();
-		if (d == NULL) {
-			if (!PyErr_Occurred())
-				PyErr_SetString(PyExc_SystemError,
-						"vars(): no locals!?");
-		}
-		else
-			Py_INCREF(d);
-	}
-	else {
-		d = PyObject_GetAttrString(v, "__dict__");
-		if (d == NULL) {
-			PyErr_SetString(PyExc_TypeError,
-			    "vars() argument must have __dict__ attribute");
-			return NULL;
-		}
-	}
-	return d;
+    if (!PyArg_UnpackTuple(args, "vars", 0, 1, &v))
+        return NULL;
+    if (v == NULL) {
+        d = PyEval_GetLocals();
+        if (d == NULL) {
+            if (!PyErr_Occurred())
+                PyErr_SetString(PyExc_SystemError,
+                                "vars(): no locals!?");
+        }
+        else
+            Py_INCREF(d);
+    }
+    else {
+        d = PyObject_GetAttrString(v, "__dict__");
+        if (d == NULL) {
+            PyErr_SetString(PyExc_TypeError,
+                "vars() argument must have __dict__ attribute");
+            return NULL;
+        }
+    }
+    return d;
 }
 
 PyDoc_STRVAR(vars_doc,
@@ -1842,156 +1842,156 @@
 static PyObject*
 builtin_sum(PyObject *self, PyObject *args)
 {
-	PyObject *seq;
-	PyObject *result = NULL;
-	PyObject *temp, *item, *iter;
+    PyObject *seq;
+    PyObject *result = NULL;
+    PyObject *temp, *item, *iter;
 
-	if (!PyArg_UnpackTuple(args, "sum", 1, 2, &seq, &result))
-		return NULL;
+    if (!PyArg_UnpackTuple(args, "sum", 1, 2, &seq, &result))
+        return NULL;
 
-	iter = PyObject_GetIter(seq);
-	if (iter == NULL)
-		return NULL;
+    iter = PyObject_GetIter(seq);
+    if (iter == NULL)
+        return NULL;
 
-	if (result == NULL) {
-		result = PyLong_FromLong(0);
-		if (result == NULL) {
-			Py_DECREF(iter);
-			return NULL;
-		}
-	} else {
-		/* reject string values for 'start' parameter */
-		if (PyUnicode_Check(result)) {
-			PyErr_SetString(PyExc_TypeError,
-				"sum() can't sum strings [use ''.join(seq) instead]");
-			Py_DECREF(iter);
-			return NULL;
-		}
-		if (PyByteArray_Check(result)) {
-			PyErr_SetString(PyExc_TypeError,
-				"sum() can't sum bytes [use b''.join(seq) instead]");
-			Py_DECREF(iter);
-			return NULL;
-		}
+    if (result == NULL) {
+        result = PyLong_FromLong(0);
+        if (result == NULL) {
+            Py_DECREF(iter);
+            return NULL;
+        }
+    } else {
+        /* reject string values for 'start' parameter */
+        if (PyUnicode_Check(result)) {
+            PyErr_SetString(PyExc_TypeError,
+                "sum() can't sum strings [use ''.join(seq) instead]");
+            Py_DECREF(iter);
+            return NULL;
+        }
+        if (PyByteArray_Check(result)) {
+            PyErr_SetString(PyExc_TypeError,
+                "sum() can't sum bytes [use b''.join(seq) instead]");
+            Py_DECREF(iter);
+            return NULL;
+        }
 
-		Py_INCREF(result);
-	}
+        Py_INCREF(result);
+    }
 
 #ifndef SLOW_SUM
-	/* Fast addition by keeping temporary sums in C instead of new Python objects.
-           Assumes all inputs are the same type.  If the assumption fails, default
-           to the more general routine.
-	*/
-	if (PyLong_CheckExact(result)) {
-		int overflow;
-		long i_result = PyLong_AsLongAndOverflow(result, &overflow);
-		/* If this already overflowed, don't even enter the loop. */
-		if (overflow == 0) {
-			Py_DECREF(result);
-			result = NULL;
-		}
-		while(result == NULL) {
-			item = PyIter_Next(iter);
-			if (item == NULL) {
-				Py_DECREF(iter);
-				if (PyErr_Occurred())
-					return NULL;
-    				return PyLong_FromLong(i_result);
-			}
-        		if (PyLong_CheckExact(item)) {
-            			long b = PyLong_AsLongAndOverflow(item, &overflow);
-				long x = i_result + b;
-				if (overflow == 0 && ((x^i_result) >= 0 || (x^b) >= 0)) {
-					i_result = x;
-					Py_DECREF(item);
-					continue;
-				}
-			}
-			/* Either overflowed or is not an int. Restore real objects and process normally */
-			result = PyLong_FromLong(i_result);
-			temp = PyNumber_Add(result, item);
-			Py_DECREF(result);
-			Py_DECREF(item);
-			result = temp;
-			if (result == NULL) {
-				Py_DECREF(iter);
-				return NULL;
-			}
-		}
-	}
+    /* Fast addition by keeping temporary sums in C instead of new Python objects.
+       Assumes all inputs are the same type.  If the assumption fails, default
+       to the more general routine.
+    */
+    if (PyLong_CheckExact(result)) {
+        int overflow;
+        long i_result = PyLong_AsLongAndOverflow(result, &overflow);
+        /* If this already overflowed, don't even enter the loop. */
+        if (overflow == 0) {
+            Py_DECREF(result);
+            result = NULL;
+        }
+        while(result == NULL) {
+            item = PyIter_Next(iter);
+            if (item == NULL) {
+                Py_DECREF(iter);
+                if (PyErr_Occurred())
+                    return NULL;
+                return PyLong_FromLong(i_result);
+            }
+            if (PyLong_CheckExact(item)) {
+                long b = PyLong_AsLongAndOverflow(item, &overflow);
+                long x = i_result + b;
+                if (overflow == 0 && ((x^i_result) >= 0 || (x^b) >= 0)) {
+                    i_result = x;
+                    Py_DECREF(item);
+                    continue;
+                }
+            }
+            /* Either overflowed or is not an int. Restore real objects and process normally */
+            result = PyLong_FromLong(i_result);
+            temp = PyNumber_Add(result, item);
+            Py_DECREF(result);
+            Py_DECREF(item);
+            result = temp;
+            if (result == NULL) {
+                Py_DECREF(iter);
+                return NULL;
+            }
+        }
+    }
 
-	if (PyFloat_CheckExact(result)) {
-		double f_result = PyFloat_AS_DOUBLE(result);
-		Py_DECREF(result);
-		result = NULL;
-		while(result == NULL) {
-			item = PyIter_Next(iter);
-			if (item == NULL) {
-				Py_DECREF(iter);
-				if (PyErr_Occurred())
-					return NULL;
-    				return PyFloat_FromDouble(f_result);
-			}
-        		if (PyFloat_CheckExact(item)) {
-				PyFPE_START_PROTECT("add", Py_DECREF(item); Py_DECREF(iter); return 0)
-				f_result += PyFloat_AS_DOUBLE(item);
-				PyFPE_END_PROTECT(f_result)
-				Py_DECREF(item);
-				continue;
-			}
-        		if (PyLong_CheckExact(item)) {
-				long value;
-				int overflow;
-				value = PyLong_AsLongAndOverflow(item, &overflow);
-				if (!overflow) {
-					PyFPE_START_PROTECT("add", Py_DECREF(item); Py_DECREF(iter); return 0)
-					f_result += (double)value;
-					PyFPE_END_PROTECT(f_result)
-					Py_DECREF(item);
-					continue;
-				}
-			}
-			result = PyFloat_FromDouble(f_result);
-			temp = PyNumber_Add(result, item);
-			Py_DECREF(result);
-			Py_DECREF(item);
-			result = temp;
-			if (result == NULL) {
-				Py_DECREF(iter);
-				return NULL;
-			}
-		}
-	}
+    if (PyFloat_CheckExact(result)) {
+        double f_result = PyFloat_AS_DOUBLE(result);
+        Py_DECREF(result);
+        result = NULL;
+        while(result == NULL) {
+            item = PyIter_Next(iter);
+            if (item == NULL) {
+                Py_DECREF(iter);
+                if (PyErr_Occurred())
+                    return NULL;
+                return PyFloat_FromDouble(f_result);
+            }
+            if (PyFloat_CheckExact(item)) {
+                PyFPE_START_PROTECT("add", Py_DECREF(item); Py_DECREF(iter); return 0)
+                f_result += PyFloat_AS_DOUBLE(item);
+                PyFPE_END_PROTECT(f_result)
+                Py_DECREF(item);
+                continue;
+            }
+            if (PyLong_CheckExact(item)) {
+                long value;
+                int overflow;
+                value = PyLong_AsLongAndOverflow(item, &overflow);
+                if (!overflow) {
+                    PyFPE_START_PROTECT("add", Py_DECREF(item); Py_DECREF(iter); return 0)
+                    f_result += (double)value;
+                    PyFPE_END_PROTECT(f_result)
+                    Py_DECREF(item);
+                    continue;
+                }
+            }
+            result = PyFloat_FromDouble(f_result);
+            temp = PyNumber_Add(result, item);
+            Py_DECREF(result);
+            Py_DECREF(item);
+            result = temp;
+            if (result == NULL) {
+                Py_DECREF(iter);
+                return NULL;
+            }
+        }
+    }
 #endif
 
-	for(;;) {
-		item = PyIter_Next(iter);
-		if (item == NULL) {
-			/* error, or end-of-sequence */
-			if (PyErr_Occurred()) {
-				Py_DECREF(result);
-				result = NULL;
-			}
-			break;
-		}
-		/* It's tempting to use PyNumber_InPlaceAdd instead of
-		   PyNumber_Add here, to avoid quadratic running time
-		   when doing 'sum(list_of_lists, [])'.  However, this
-		   would produce a change in behaviour: a snippet like
+    for(;;) {
+        item = PyIter_Next(iter);
+        if (item == NULL) {
+            /* error, or end-of-sequence */
+            if (PyErr_Occurred()) {
+                Py_DECREF(result);
+                result = NULL;
+            }
+            break;
+        }
+        /* It's tempting to use PyNumber_InPlaceAdd instead of
+           PyNumber_Add here, to avoid quadratic running time
+           when doing 'sum(list_of_lists, [])'.  However, this
+           would produce a change in behaviour: a snippet like
 
-		     empty = []
-		     sum([[x] for x in range(10)], empty)
+             empty = []
+             sum([[x] for x in range(10)], empty)
 
-		   would change the value of empty. */
-		temp = PyNumber_Add(result, item);
-		Py_DECREF(result);
-		Py_DECREF(item);
-		result = temp;
-		if (result == NULL)
-			break;
-	}
-	Py_DECREF(iter);
-	return result;
+           would change the value of empty. */
+        temp = PyNumber_Add(result, item);
+        Py_DECREF(result);
+        Py_DECREF(item);
+        result = temp;
+        if (result == NULL)
+            break;
+    }
+    Py_DECREF(iter);
+    return result;
 }
 
 PyDoc_STRVAR(sum_doc,
@@ -2005,17 +2005,17 @@
 static PyObject *
 builtin_isinstance(PyObject *self, PyObject *args)
 {
-	PyObject *inst;
-	PyObject *cls;
-	int retval;
+    PyObject *inst;
+    PyObject *cls;
+    int retval;
 
-	if (!PyArg_UnpackTuple(args, "isinstance", 2, 2, &inst, &cls))
-		return NULL;
+    if (!PyArg_UnpackTuple(args, "isinstance", 2, 2, &inst, &cls))
+        return NULL;
 
-	retval = PyObject_IsInstance(inst, cls);
-	if (retval < 0)
-		return NULL;
-	return PyBool_FromLong(retval);
+    retval = PyObject_IsInstance(inst, cls);
+    if (retval < 0)
+        return NULL;
+    return PyBool_FromLong(retval);
 }
 
 PyDoc_STRVAR(isinstance_doc,
@@ -2030,17 +2030,17 @@
 static PyObject *
 builtin_issubclass(PyObject *self, PyObject *args)
 {
-	PyObject *derived;
-	PyObject *cls;
-	int retval;
+    PyObject *derived;
+    PyObject *cls;
+    int retval;
 
-	if (!PyArg_UnpackTuple(args, "issubclass", 2, 2, &derived, &cls))
-		return NULL;
+    if (!PyArg_UnpackTuple(args, "issubclass", 2, 2, &derived, &cls))
+        return NULL;
 
-	retval = PyObject_IsSubclass(derived, cls);
-	if (retval < 0)
-		return NULL;
-	return PyBool_FromLong(retval);
+    retval = PyObject_IsSubclass(derived, cls);
+    if (retval < 0)
+        return NULL;
+    return PyBool_FromLong(retval);
 }
 
 PyDoc_STRVAR(issubclass_doc,
@@ -2052,127 +2052,127 @@
 
 
 typedef struct {
-	PyObject_HEAD
-	Py_ssize_t	tuplesize;
-	PyObject *ittuple;		/* tuple of iterators */
-	PyObject *result;
+    PyObject_HEAD
+    Py_ssize_t          tuplesize;
+    PyObject *ittuple;                  /* tuple of iterators */
+    PyObject *result;
 } zipobject;
 
 static PyObject *
 zip_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 {
-	zipobject *lz;
-	Py_ssize_t i;
-	PyObject *ittuple;  /* tuple of iterators */
-	PyObject *result;
-	Py_ssize_t tuplesize = PySequence_Length(args);
+    zipobject *lz;
+    Py_ssize_t i;
+    PyObject *ittuple;  /* tuple of iterators */
+    PyObject *result;
+    Py_ssize_t tuplesize = PySequence_Length(args);
 
-	if (type == &PyZip_Type && !_PyArg_NoKeywords("zip()", kwds))
-		return NULL;
+    if (type == &PyZip_Type && !_PyArg_NoKeywords("zip()", kwds))
+        return NULL;
 
-	/* args must be a tuple */
-	assert(PyTuple_Check(args));
+    /* args must be a tuple */
+    assert(PyTuple_Check(args));
 
-	/* obtain iterators */
-	ittuple = PyTuple_New(tuplesize);
-	if (ittuple == NULL)
-		return NULL;
-	for (i=0; i < tuplesize; ++i) {
-		PyObject *item = PyTuple_GET_ITEM(args, i);
-		PyObject *it = PyObject_GetIter(item);
-		if (it == NULL) {
-			if (PyErr_ExceptionMatches(PyExc_TypeError))
-				PyErr_Format(PyExc_TypeError,
-				    "zip argument #%zd must support iteration",
-				    i+1);
-			Py_DECREF(ittuple);
-			return NULL;
-		}
-		PyTuple_SET_ITEM(ittuple, i, it);
-	}
+    /* obtain iterators */
+    ittuple = PyTuple_New(tuplesize);
+    if (ittuple == NULL)
+        return NULL;
+    for (i=0; i < tuplesize; ++i) {
+        PyObject *item = PyTuple_GET_ITEM(args, i);
+        PyObject *it = PyObject_GetIter(item);
+        if (it == NULL) {
+            if (PyErr_ExceptionMatches(PyExc_TypeError))
+                PyErr_Format(PyExc_TypeError,
+                    "zip argument #%zd must support iteration",
+                    i+1);
+            Py_DECREF(ittuple);
+            return NULL;
+        }
+        PyTuple_SET_ITEM(ittuple, i, it);
+    }
 
-	/* create a result holder */
-	result = PyTuple_New(tuplesize);
-	if (result == NULL) {
-		Py_DECREF(ittuple);
-		return NULL;
-	}
-	for (i=0 ; i < tuplesize ; i++) {
-		Py_INCREF(Py_None);
-		PyTuple_SET_ITEM(result, i, Py_None);
-	}
+    /* create a result holder */
+    result = PyTuple_New(tuplesize);
+    if (result == NULL) {
+        Py_DECREF(ittuple);
+        return NULL;
+    }
+    for (i=0 ; i < tuplesize ; i++) {
+        Py_INCREF(Py_None);
+        PyTuple_SET_ITEM(result, i, Py_None);
+    }
 
-	/* create zipobject structure */
-	lz = (zipobject *)type->tp_alloc(type, 0);
-	if (lz == NULL) {
-		Py_DECREF(ittuple);
-		Py_DECREF(result);
-		return NULL;
-	}
-	lz->ittuple = ittuple;
-	lz->tuplesize = tuplesize;
-	lz->result = result;
+    /* create zipobject structure */
+    lz = (zipobject *)type->tp_alloc(type, 0);
+    if (lz == NULL) {
+        Py_DECREF(ittuple);
+        Py_DECREF(result);
+        return NULL;
+    }
+    lz->ittuple = ittuple;
+    lz->tuplesize = tuplesize;
+    lz->result = result;
 
-	return (PyObject *)lz;
+    return (PyObject *)lz;
 }
 
 static void
 zip_dealloc(zipobject *lz)
 {
-	PyObject_GC_UnTrack(lz);
-	Py_XDECREF(lz->ittuple);
-	Py_XDECREF(lz->result);
-	Py_TYPE(lz)->tp_free(lz);
+    PyObject_GC_UnTrack(lz);
+    Py_XDECREF(lz->ittuple);
+    Py_XDECREF(lz->result);
+    Py_TYPE(lz)->tp_free(lz);
 }
 
 static int
 zip_traverse(zipobject *lz, visitproc visit, void *arg)
 {
-	Py_VISIT(lz->ittuple);
-	Py_VISIT(lz->result);
-	return 0;
+    Py_VISIT(lz->ittuple);
+    Py_VISIT(lz->result);
+    return 0;
 }
 
 static PyObject *
 zip_next(zipobject *lz)
 {
-	Py_ssize_t i;
-	Py_ssize_t tuplesize = lz->tuplesize;
-	PyObject *result = lz->result;
-	PyObject *it;
-	PyObject *item;
-	PyObject *olditem;
+    Py_ssize_t i;
+    Py_ssize_t tuplesize = lz->tuplesize;
+    PyObject *result = lz->result;
+    PyObject *it;
+    PyObject *item;
+    PyObject *olditem;
 
-	if (tuplesize == 0)
-		return NULL;
-	if (Py_REFCNT(result) == 1) {
-		Py_INCREF(result);
-		for (i=0 ; i < tuplesize ; i++) {
-			it = PyTuple_GET_ITEM(lz->ittuple, i);
-			item = (*Py_TYPE(it)->tp_iternext)(it);
-			if (item == NULL) {
-				Py_DECREF(result);
-				return NULL;
-			}
-			olditem = PyTuple_GET_ITEM(result, i);
-			PyTuple_SET_ITEM(result, i, item);
-			Py_DECREF(olditem);
-		}
-	} else {
-		result = PyTuple_New(tuplesize);
-		if (result == NULL)
-			return NULL;
-		for (i=0 ; i < tuplesize ; i++) {
-			it = PyTuple_GET_ITEM(lz->ittuple, i);
-			item = (*Py_TYPE(it)->tp_iternext)(it);
-			if (item == NULL) {
-				Py_DECREF(result);
-				return NULL;
-			}
-			PyTuple_SET_ITEM(result, i, item);
-		}
-	}
-	return result;
+    if (tuplesize == 0)
+        return NULL;
+    if (Py_REFCNT(result) == 1) {
+        Py_INCREF(result);
+        for (i=0 ; i < tuplesize ; i++) {
+            it = PyTuple_GET_ITEM(lz->ittuple, i);
+            item = (*Py_TYPE(it)->tp_iternext)(it);
+            if (item == NULL) {
+                Py_DECREF(result);
+                return NULL;
+            }
+            olditem = PyTuple_GET_ITEM(result, i);
+            PyTuple_SET_ITEM(result, i, item);
+            Py_DECREF(olditem);
+        }
+    } else {
+        result = PyTuple_New(tuplesize);
+        if (result == NULL)
+            return NULL;
+        for (i=0 ; i < tuplesize ; i++) {
+            it = PyTuple_GET_ITEM(lz->ittuple, i);
+            item = (*Py_TYPE(it)->tp_iternext)(it);
+            if (item == NULL) {
+                Py_DECREF(result);
+                return NULL;
+            }
+            PyTuple_SET_ITEM(result, i, item);
+        }
+    }
+    return result;
 }
 
 PyDoc_STRVAR(zip_doc,
@@ -2184,93 +2184,93 @@
 is exhausted and then it raises StopIteration.");
 
 PyTypeObject PyZip_Type = {
-	PyVarObject_HEAD_INIT(&PyType_Type, 0)
-	"zip",				/* tp_name */
-	sizeof(zipobject),		/* tp_basicsize */
-	0,				/* tp_itemsize */
-	/* methods */
-	(destructor)zip_dealloc,	/* tp_dealloc */
-	0,				/* tp_print */
-	0,				/* tp_getattr */
-	0,				/* tp_setattr */
-	0,				/* tp_reserved */
-	0,				/* tp_repr */
-	0,				/* tp_as_number */
-	0,				/* tp_as_sequence */
-	0,				/* tp_as_mapping */
-	0,				/* tp_hash */
-	0,				/* tp_call */
-	0,				/* tp_str */
-	PyObject_GenericGetAttr,	/* tp_getattro */
-	0,				/* tp_setattro */
-	0,				/* tp_as_buffer */
-	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
-		Py_TPFLAGS_BASETYPE,	/* tp_flags */
-	zip_doc,			/* tp_doc */
-	(traverseproc)zip_traverse,    /* tp_traverse */
-	0,				/* tp_clear */
-	0,				/* tp_richcompare */
-	0,				/* tp_weaklistoffset */
-	PyObject_SelfIter,		/* tp_iter */
-	(iternextfunc)zip_next,	/* tp_iternext */
-	0,				/* tp_methods */
-	0,				/* tp_members */
-	0,				/* tp_getset */
-	0,				/* tp_base */
-	0,				/* tp_dict */
-	0,				/* tp_descr_get */
-	0,				/* tp_descr_set */
-	0,				/* tp_dictoffset */
-	0,				/* tp_init */
-	PyType_GenericAlloc,		/* tp_alloc */
-	zip_new,			/* tp_new */
-	PyObject_GC_Del,		/* tp_free */
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    "zip",                              /* tp_name */
+    sizeof(zipobject),                  /* tp_basicsize */
+    0,                                  /* tp_itemsize */
+    /* methods */
+    (destructor)zip_dealloc,            /* tp_dealloc */
+    0,                                  /* tp_print */
+    0,                                  /* tp_getattr */
+    0,                                  /* tp_setattr */
+    0,                                  /* tp_reserved */
+    0,                                  /* tp_repr */
+    0,                                  /* tp_as_number */
+    0,                                  /* tp_as_sequence */
+    0,                                  /* tp_as_mapping */
+    0,                                  /* tp_hash */
+    0,                                  /* tp_call */
+    0,                                  /* tp_str */
+    PyObject_GenericGetAttr,            /* tp_getattro */
+    0,                                  /* tp_setattro */
+    0,                                  /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
+        Py_TPFLAGS_BASETYPE,            /* tp_flags */
+    zip_doc,                            /* tp_doc */
+    (traverseproc)zip_traverse,    /* tp_traverse */
+    0,                                  /* tp_clear */
+    0,                                  /* tp_richcompare */
+    0,                                  /* tp_weaklistoffset */
+    PyObject_SelfIter,                  /* tp_iter */
+    (iternextfunc)zip_next,     /* tp_iternext */
+    0,                                  /* tp_methods */
+    0,                                  /* tp_members */
+    0,                                  /* tp_getset */
+    0,                                  /* tp_base */
+    0,                                  /* tp_dict */
+    0,                                  /* tp_descr_get */
+    0,                                  /* tp_descr_set */
+    0,                                  /* tp_dictoffset */
+    0,                                  /* tp_init */
+    PyType_GenericAlloc,                /* tp_alloc */
+    zip_new,                            /* tp_new */
+    PyObject_GC_Del,                    /* tp_free */
 };
 
 
 static PyMethodDef builtin_methods[] = {
- 	{"__build_class__", (PyCFunction)builtin___build_class__,
-         METH_VARARGS | METH_KEYWORDS, build_class_doc},
- 	{"__import__",	(PyCFunction)builtin___import__, METH_VARARGS | METH_KEYWORDS, import_doc},
- 	{"abs",		builtin_abs,        METH_O, abs_doc},
- 	{"all",		builtin_all,        METH_O, all_doc},
- 	{"any",		builtin_any,        METH_O, any_doc},
- 	{"ascii",	builtin_ascii,      METH_O, ascii_doc},
-	{"bin",		builtin_bin,	    METH_O, bin_doc},
- 	{"chr",		builtin_chr,        METH_VARARGS, chr_doc},
- 	{"compile",	(PyCFunction)builtin_compile,    METH_VARARGS | METH_KEYWORDS, compile_doc},
- 	{"delattr",	builtin_delattr,    METH_VARARGS, delattr_doc},
- 	{"dir",		builtin_dir,        METH_VARARGS, dir_doc},
- 	{"divmod",	builtin_divmod,     METH_VARARGS, divmod_doc},
- 	{"eval",	builtin_eval,       METH_VARARGS, eval_doc},
-	{"exec",        builtin_exec,       METH_VARARGS, exec_doc},
- 	{"format",	builtin_format,     METH_VARARGS, format_doc},
- 	{"getattr",	builtin_getattr,    METH_VARARGS, getattr_doc},
- 	{"globals",	(PyCFunction)builtin_globals,    METH_NOARGS, globals_doc},
- 	{"hasattr",	builtin_hasattr,    METH_VARARGS, hasattr_doc},
- 	{"hash",	builtin_hash,       METH_O, hash_doc},
- 	{"hex",		builtin_hex,        METH_O, hex_doc},
- 	{"id",		builtin_id,         METH_O, id_doc},
- 	{"input",	builtin_input,      METH_VARARGS, input_doc},
- 	{"isinstance",  builtin_isinstance, METH_VARARGS, isinstance_doc},
- 	{"issubclass",  builtin_issubclass, METH_VARARGS, issubclass_doc},
- 	{"iter",	builtin_iter,       METH_VARARGS, iter_doc},
- 	{"len",		builtin_len,        METH_O, len_doc},
- 	{"locals",	(PyCFunction)builtin_locals,     METH_NOARGS, locals_doc},
- 	{"max",		(PyCFunction)builtin_max,        METH_VARARGS | METH_KEYWORDS, max_doc},
- 	{"min",		(PyCFunction)builtin_min,        METH_VARARGS | METH_KEYWORDS, min_doc},
-	{"next",	(PyCFunction)builtin_next,       METH_VARARGS, next_doc},
- 	{"oct",		builtin_oct,        METH_O, oct_doc},
- 	{"ord",		builtin_ord,        METH_O, ord_doc},
- 	{"pow",		builtin_pow,        METH_VARARGS, pow_doc},
- 	{"print",	(PyCFunction)builtin_print,      METH_VARARGS | METH_KEYWORDS, print_doc},
- 	{"repr",	builtin_repr,       METH_O, repr_doc},
- 	{"round",	(PyCFunction)builtin_round,      METH_VARARGS | METH_KEYWORDS, round_doc},
- 	{"setattr",	builtin_setattr,    METH_VARARGS, setattr_doc},
- 	{"sorted",	(PyCFunction)builtin_sorted,     METH_VARARGS | METH_KEYWORDS, sorted_doc},
- 	{"sum",		builtin_sum,        METH_VARARGS, sum_doc},
- 	{"vars",	builtin_vars,       METH_VARARGS, vars_doc},
-	{NULL,		NULL},
+    {"__build_class__", (PyCFunction)builtin___build_class__,
+     METH_VARARGS | METH_KEYWORDS, build_class_doc},
+    {"__import__",      (PyCFunction)builtin___import__, METH_VARARGS | METH_KEYWORDS, import_doc},
+    {"abs",             builtin_abs,        METH_O, abs_doc},
+    {"all",             builtin_all,        METH_O, all_doc},
+    {"any",             builtin_any,        METH_O, any_doc},
+    {"ascii",           builtin_ascii,      METH_O, ascii_doc},
+    {"bin",             builtin_bin,        METH_O, bin_doc},
+    {"chr",             builtin_chr,        METH_VARARGS, chr_doc},
+    {"compile",         (PyCFunction)builtin_compile,    METH_VARARGS | METH_KEYWORDS, compile_doc},
+    {"delattr",         builtin_delattr,    METH_VARARGS, delattr_doc},
+    {"dir",             builtin_dir,        METH_VARARGS, dir_doc},
+    {"divmod",          builtin_divmod,     METH_VARARGS, divmod_doc},
+    {"eval",            builtin_eval,       METH_VARARGS, eval_doc},
+    {"exec",        builtin_exec,       METH_VARARGS, exec_doc},
+    {"format",          builtin_format,     METH_VARARGS, format_doc},
+    {"getattr",         builtin_getattr,    METH_VARARGS, getattr_doc},
+    {"globals",         (PyCFunction)builtin_globals,    METH_NOARGS, globals_doc},
+    {"hasattr",         builtin_hasattr,    METH_VARARGS, hasattr_doc},
+    {"hash",            builtin_hash,       METH_O, hash_doc},
+    {"hex",             builtin_hex,        METH_O, hex_doc},
+    {"id",              builtin_id,         METH_O, id_doc},
+    {"input",           builtin_input,      METH_VARARGS, input_doc},
+    {"isinstance",  builtin_isinstance, METH_VARARGS, isinstance_doc},
+    {"issubclass",  builtin_issubclass, METH_VARARGS, issubclass_doc},
+    {"iter",            builtin_iter,       METH_VARARGS, iter_doc},
+    {"len",             builtin_len,        METH_O, len_doc},
+    {"locals",          (PyCFunction)builtin_locals,     METH_NOARGS, locals_doc},
+    {"max",             (PyCFunction)builtin_max,        METH_VARARGS | METH_KEYWORDS, max_doc},
+    {"min",             (PyCFunction)builtin_min,        METH_VARARGS | METH_KEYWORDS, min_doc},
+    {"next",            (PyCFunction)builtin_next,       METH_VARARGS, next_doc},
+    {"oct",             builtin_oct,        METH_O, oct_doc},
+    {"ord",             builtin_ord,        METH_O, ord_doc},
+    {"pow",             builtin_pow,        METH_VARARGS, pow_doc},
+    {"print",           (PyCFunction)builtin_print,      METH_VARARGS | METH_KEYWORDS, print_doc},
+    {"repr",            builtin_repr,       METH_O, repr_doc},
+    {"round",           (PyCFunction)builtin_round,      METH_VARARGS | METH_KEYWORDS, round_doc},
+    {"setattr",         builtin_setattr,    METH_VARARGS, setattr_doc},
+    {"sorted",          (PyCFunction)builtin_sorted,     METH_VARARGS | METH_KEYWORDS, sorted_doc},
+    {"sum",             builtin_sum,        METH_VARARGS, sum_doc},
+    {"vars",            builtin_vars,       METH_VARARGS, vars_doc},
+    {NULL,              NULL},
 };
 
 PyDoc_STRVAR(builtin_doc,
@@ -2279,83 +2279,83 @@
 Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices.");
 
 static struct PyModuleDef builtinsmodule = {
-	PyModuleDef_HEAD_INIT,
-	"builtins",
-	builtin_doc,
-	-1, /* multiple "initialization" just copies the module dict. */
-	builtin_methods,
-	NULL,
-	NULL,
-	NULL,
-	NULL
+    PyModuleDef_HEAD_INIT,
+    "builtins",
+    builtin_doc,
+    -1, /* multiple "initialization" just copies the module dict. */
+    builtin_methods,
+    NULL,
+    NULL,
+    NULL,
+    NULL
 };
 
 
 PyObject *
 _PyBuiltin_Init(void)
 {
-	PyObject *mod, *dict, *debug;
-	mod = PyModule_Create(&builtinsmodule);
-	if (mod == NULL)
-		return NULL;
-	dict = PyModule_GetDict(mod);
+    PyObject *mod, *dict, *debug;
+    mod = PyModule_Create(&builtinsmodule);
+    if (mod == NULL)
+        return NULL;
+    dict = PyModule_GetDict(mod);
 
 #ifdef Py_TRACE_REFS
-	/* "builtins" exposes a number of statically allocated objects
-	 * that, before this code was added in 2.3, never showed up in
-	 * the list of "all objects" maintained by Py_TRACE_REFS.  As a
-	 * result, programs leaking references to None and False (etc)
-	 * couldn't be diagnosed by examining sys.getobjects(0).
-	 */
+    /* "builtins" exposes a number of statically allocated objects
+     * that, before this code was added in 2.3, never showed up in
+     * the list of "all objects" maintained by Py_TRACE_REFS.  As a
+     * result, programs leaking references to None and False (etc)
+     * couldn't be diagnosed by examining sys.getobjects(0).
+     */
 #define ADD_TO_ALL(OBJECT) _Py_AddToAllObjects((PyObject *)(OBJECT), 0)
 #else
 #define ADD_TO_ALL(OBJECT) (void)0
 #endif
 
 #define SETBUILTIN(NAME, OBJECT) \
-	if (PyDict_SetItemString(dict, NAME, (PyObject *)OBJECT) < 0)	\
-		return NULL;						\
-	ADD_TO_ALL(OBJECT)
+    if (PyDict_SetItemString(dict, NAME, (PyObject *)OBJECT) < 0)       \
+        return NULL;                                                    \
+    ADD_TO_ALL(OBJECT)
 
-	SETBUILTIN("None",		Py_None);
-	SETBUILTIN("Ellipsis",		Py_Ellipsis);
-	SETBUILTIN("NotImplemented",	Py_NotImplemented);
-	SETBUILTIN("False",		Py_False);
-	SETBUILTIN("True",		Py_True);
-	SETBUILTIN("bool",		&PyBool_Type);
-	SETBUILTIN("memoryview",        &PyMemoryView_Type);
-	SETBUILTIN("bytearray",		&PyByteArray_Type);
-	SETBUILTIN("bytes",		&PyBytes_Type);
-	SETBUILTIN("classmethod",	&PyClassMethod_Type);
-	SETBUILTIN("complex",		&PyComplex_Type);
-	SETBUILTIN("dict",		&PyDict_Type);
- 	SETBUILTIN("enumerate",		&PyEnum_Type);
- 	SETBUILTIN("filter",		&PyFilter_Type);
-	SETBUILTIN("float",		&PyFloat_Type);
-	SETBUILTIN("frozenset",		&PyFrozenSet_Type);
-	SETBUILTIN("property",		&PyProperty_Type);
-	SETBUILTIN("int",		&PyLong_Type);
-	SETBUILTIN("list",		&PyList_Type);
-	SETBUILTIN("map",		&PyMap_Type);
-	SETBUILTIN("object",		&PyBaseObject_Type);
-	SETBUILTIN("range",		&PyRange_Type);
-	SETBUILTIN("reversed",		&PyReversed_Type);
-	SETBUILTIN("set",		&PySet_Type);
-	SETBUILTIN("slice",		&PySlice_Type);
-	SETBUILTIN("staticmethod",	&PyStaticMethod_Type);
-	SETBUILTIN("str",		&PyUnicode_Type);
-	SETBUILTIN("super",		&PySuper_Type);
-	SETBUILTIN("tuple",		&PyTuple_Type);
-	SETBUILTIN("type",		&PyType_Type);
-	SETBUILTIN("zip",		&PyZip_Type);
-	debug = PyBool_FromLong(Py_OptimizeFlag == 0);
-	if (PyDict_SetItemString(dict, "__debug__", debug) < 0) {
-		Py_XDECREF(debug);
-		return NULL;
-	}
-	Py_XDECREF(debug);
+    SETBUILTIN("None",                  Py_None);
+    SETBUILTIN("Ellipsis",              Py_Ellipsis);
+    SETBUILTIN("NotImplemented",        Py_NotImplemented);
+    SETBUILTIN("False",                 Py_False);
+    SETBUILTIN("True",                  Py_True);
+    SETBUILTIN("bool",                  &PyBool_Type);
+    SETBUILTIN("memoryview",        &PyMemoryView_Type);
+    SETBUILTIN("bytearray",             &PyByteArray_Type);
+    SETBUILTIN("bytes",                 &PyBytes_Type);
+    SETBUILTIN("classmethod",           &PyClassMethod_Type);
+    SETBUILTIN("complex",               &PyComplex_Type);
+    SETBUILTIN("dict",                  &PyDict_Type);
+    SETBUILTIN("enumerate",             &PyEnum_Type);
+    SETBUILTIN("filter",                &PyFilter_Type);
+    SETBUILTIN("float",                 &PyFloat_Type);
+    SETBUILTIN("frozenset",             &PyFrozenSet_Type);
+    SETBUILTIN("property",              &PyProperty_Type);
+    SETBUILTIN("int",                   &PyLong_Type);
+    SETBUILTIN("list",                  &PyList_Type);
+    SETBUILTIN("map",                   &PyMap_Type);
+    SETBUILTIN("object",                &PyBaseObject_Type);
+    SETBUILTIN("range",                 &PyRange_Type);
+    SETBUILTIN("reversed",              &PyReversed_Type);
+    SETBUILTIN("set",                   &PySet_Type);
+    SETBUILTIN("slice",                 &PySlice_Type);
+    SETBUILTIN("staticmethod",          &PyStaticMethod_Type);
+    SETBUILTIN("str",                   &PyUnicode_Type);
+    SETBUILTIN("super",                 &PySuper_Type);
+    SETBUILTIN("tuple",                 &PyTuple_Type);
+    SETBUILTIN("type",                  &PyType_Type);
+    SETBUILTIN("zip",                   &PyZip_Type);
+    debug = PyBool_FromLong(Py_OptimizeFlag == 0);
+    if (PyDict_SetItemString(dict, "__debug__", debug) < 0) {
+        Py_XDECREF(debug);
+        return NULL;
+    }
+    Py_XDECREF(debug);
 
-	return mod;
+    return mod;
 #undef ADD_TO_ALL
 #undef SETBUILTIN
 }