diff --git a/Python/traceback.c b/Python/traceback.c
index 1de2df6..51a9226 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -30,303 +30,303 @@
 };
 
 static PyMemberDef tb_memberlist[] = {
-	{"tb_next",	T_OBJECT,	OFF(tb_next),	READONLY},
-	{"tb_frame",	T_OBJECT,	OFF(tb_frame),	READONLY},
-	{"tb_lasti",	T_INT,		OFF(tb_lasti),	READONLY},
-	{"tb_lineno",	T_INT,		OFF(tb_lineno),	READONLY},
-	{NULL}	/* Sentinel */
+    {"tb_next",         T_OBJECT,       OFF(tb_next),   READONLY},
+    {"tb_frame",        T_OBJECT,       OFF(tb_frame),  READONLY},
+    {"tb_lasti",        T_INT,          OFF(tb_lasti),  READONLY},
+    {"tb_lineno",       T_INT,          OFF(tb_lineno), READONLY},
+    {NULL}      /* Sentinel */
 };
 
 static void
 tb_dealloc(PyTracebackObject *tb)
 {
-	PyObject_GC_UnTrack(tb);
-	Py_TRASHCAN_SAFE_BEGIN(tb)
-	Py_XDECREF(tb->tb_next);
-	Py_XDECREF(tb->tb_frame);
-	PyObject_GC_Del(tb);
-	Py_TRASHCAN_SAFE_END(tb)
+    PyObject_GC_UnTrack(tb);
+    Py_TRASHCAN_SAFE_BEGIN(tb)
+    Py_XDECREF(tb->tb_next);
+    Py_XDECREF(tb->tb_frame);
+    PyObject_GC_Del(tb);
+    Py_TRASHCAN_SAFE_END(tb)
 }
 
 static int
 tb_traverse(PyTracebackObject *tb, visitproc visit, void *arg)
 {
-	Py_VISIT(tb->tb_next);
-	Py_VISIT(tb->tb_frame);
-	return 0;
+    Py_VISIT(tb->tb_next);
+    Py_VISIT(tb->tb_frame);
+    return 0;
 }
 
 static void
 tb_clear(PyTracebackObject *tb)
 {
-	Py_CLEAR(tb->tb_next);
-	Py_CLEAR(tb->tb_frame);
+    Py_CLEAR(tb->tb_next);
+    Py_CLEAR(tb->tb_frame);
 }
 
 PyTypeObject PyTraceBack_Type = {
-	PyVarObject_HEAD_INIT(&PyType_Type, 0)
-	"traceback",
-	sizeof(PyTracebackObject),
-	0,
-	(destructor)tb_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,/* tp_flags */
-	0,             				/* tp_doc */
- 	(traverseproc)tb_traverse,		/* tp_traverse */
-	(inquiry)tb_clear,			/* tp_clear */
-	0,					/* tp_richcompare */
-	0,					/* tp_weaklistoffset */
-	0,					/* tp_iter */
-	0,					/* tp_iternext */
-	tb_methods,	/* tp_methods */
-	tb_memberlist,	/* tp_members */
-	0,					/* tp_getset */
-	0,					/* tp_base */
-	0,					/* tp_dict */
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    "traceback",
+    sizeof(PyTracebackObject),
+    0,
+    (destructor)tb_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,/* tp_flags */
+    0,                                          /* tp_doc */
+    (traverseproc)tb_traverse,                  /* tp_traverse */
+    (inquiry)tb_clear,                          /* tp_clear */
+    0,                                          /* tp_richcompare */
+    0,                                          /* tp_weaklistoffset */
+    0,                                          /* tp_iter */
+    0,                                          /* tp_iternext */
+    tb_methods,         /* tp_methods */
+    tb_memberlist,      /* tp_members */
+    0,                                          /* tp_getset */
+    0,                                          /* tp_base */
+    0,                                          /* tp_dict */
 };
 
 static PyTracebackObject *
 newtracebackobject(PyTracebackObject *next, PyFrameObject *frame)
 {
-	PyTracebackObject *tb;
-	if ((next != NULL && !PyTraceBack_Check(next)) ||
-			frame == NULL || !PyFrame_Check(frame)) {
-		PyErr_BadInternalCall();
-		return NULL;
-	}
-	tb = PyObject_GC_New(PyTracebackObject, &PyTraceBack_Type);
-	if (tb != NULL) {
-		Py_XINCREF(next);
-		tb->tb_next = next;
-		Py_XINCREF(frame);
-		tb->tb_frame = frame;
-		tb->tb_lasti = frame->f_lasti;
-		tb->tb_lineno = PyFrame_GetLineNumber(frame);
-		PyObject_GC_Track(tb);
-	}
-	return tb;
+    PyTracebackObject *tb;
+    if ((next != NULL && !PyTraceBack_Check(next)) ||
+                    frame == NULL || !PyFrame_Check(frame)) {
+        PyErr_BadInternalCall();
+        return NULL;
+    }
+    tb = PyObject_GC_New(PyTracebackObject, &PyTraceBack_Type);
+    if (tb != NULL) {
+        Py_XINCREF(next);
+        tb->tb_next = next;
+        Py_XINCREF(frame);
+        tb->tb_frame = frame;
+        tb->tb_lasti = frame->f_lasti;
+        tb->tb_lineno = PyFrame_GetLineNumber(frame);
+        PyObject_GC_Track(tb);
+    }
+    return tb;
 }
 
 int
 PyTraceBack_Here(PyFrameObject *frame)
 {
-	PyThreadState *tstate = PyThreadState_GET();
-	PyTracebackObject *oldtb = (PyTracebackObject *) tstate->curexc_traceback;
-	PyTracebackObject *tb = newtracebackobject(oldtb, frame);
-	if (tb == NULL)
-		return -1;
-	tstate->curexc_traceback = (PyObject *)tb;
-	Py_XDECREF(oldtb);
-	return 0;
+    PyThreadState *tstate = PyThreadState_GET();
+    PyTracebackObject *oldtb = (PyTracebackObject *) tstate->curexc_traceback;
+    PyTracebackObject *tb = newtracebackobject(oldtb, frame);
+    if (tb == NULL)
+        return -1;
+    tstate->curexc_traceback = (PyObject *)tb;
+    Py_XDECREF(oldtb);
+    return 0;
 }
 
 static int
 _Py_FindSourceFile(const char* filename, char* namebuf, size_t namelen, int open_flags)
 {
-	int i;
-	int fd = -1;
-	PyObject *v;
-	Py_ssize_t _npath;
-	int npath;
-	size_t taillen;
-	PyObject *syspath;
-	const char* path;
-	const char* tail;
-	Py_ssize_t len;
+    int i;
+    int fd = -1;
+    PyObject *v;
+    Py_ssize_t _npath;
+    int npath;
+    size_t taillen;
+    PyObject *syspath;
+    const char* path;
+    const char* tail;
+    Py_ssize_t len;
 
-	/* Search tail of filename in sys.path before giving up */
-	tail = strrchr(filename, SEP);
-	if (tail == NULL)
-		tail = filename;
-	else
-		tail++;
-	taillen = strlen(tail);
+    /* Search tail of filename in sys.path before giving up */
+    tail = strrchr(filename, SEP);
+    if (tail == NULL)
+        tail = filename;
+    else
+        tail++;
+    taillen = strlen(tail);
 
-	syspath = PySys_GetObject("path");
-	if (syspath == NULL || !PyList_Check(syspath))
-		return -1;
-	_npath = PyList_Size(syspath);
-	npath = Py_SAFE_DOWNCAST(_npath, Py_ssize_t, int);
+    syspath = PySys_GetObject("path");
+    if (syspath == NULL || !PyList_Check(syspath))
+        return -1;
+    _npath = PyList_Size(syspath);
+    npath = Py_SAFE_DOWNCAST(_npath, Py_ssize_t, int);
 
-	for (i = 0; i < npath; i++) {
-		v = PyList_GetItem(syspath, i);
-		if (v == NULL) {
-			PyErr_Clear();
-			break;
-		}
-		if (!PyUnicode_Check(v))
-			continue;
-		path = _PyUnicode_AsStringAndSize(v, &len);
-		if (len + 1 + (Py_ssize_t)taillen >= (Py_ssize_t)namelen - 1)
-			continue; /* Too long */
-		strcpy(namebuf, path);
-		if (strlen(namebuf) != len)
-			continue; /* v contains '\0' */
-		if (len > 0 && namebuf[len-1] != SEP)
-			namebuf[len++] = SEP;
-		strcpy(namebuf+len, tail);
-		Py_BEGIN_ALLOW_THREADS
-		fd = open(namebuf, open_flags);
-		Py_END_ALLOW_THREADS
-		if (0 <= fd) {
-			return fd;
-		}
-	}
-	return -1;
+    for (i = 0; i < npath; i++) {
+        v = PyList_GetItem(syspath, i);
+        if (v == NULL) {
+            PyErr_Clear();
+            break;
+        }
+        if (!PyUnicode_Check(v))
+            continue;
+        path = _PyUnicode_AsStringAndSize(v, &len);
+        if (len + 1 + (Py_ssize_t)taillen >= (Py_ssize_t)namelen - 1)
+            continue; /* Too long */
+        strcpy(namebuf, path);
+        if (strlen(namebuf) != len)
+            continue; /* v contains '\0' */
+        if (len > 0 && namebuf[len-1] != SEP)
+            namebuf[len++] = SEP;
+        strcpy(namebuf+len, tail);
+        Py_BEGIN_ALLOW_THREADS
+        fd = open(namebuf, open_flags);
+        Py_END_ALLOW_THREADS
+        if (0 <= fd) {
+            return fd;
+        }
+    }
+    return -1;
 }
 
 int
 _Py_DisplaySourceLine(PyObject *f, const char *filename, int lineno, int indent)
 {
-	int err = 0;
-	int fd;
-	int i;
-	char *found_encoding;
-	char *encoding;
-	PyObject *fob = NULL;
-	PyObject *lineobj = NULL;
+    int err = 0;
+    int fd;
+    int i;
+    char *found_encoding;
+    char *encoding;
+    PyObject *fob = NULL;
+    PyObject *lineobj = NULL;
 #ifdef O_BINARY
-	const int open_flags = O_RDONLY | O_BINARY;   /* necessary for Windows */
+    const int open_flags = O_RDONLY | O_BINARY;   /* necessary for Windows */
 #else
-	const int open_flags = O_RDONLY;
+    const int open_flags = O_RDONLY;
 #endif
-	char buf[MAXPATHLEN+1];
-	Py_UNICODE *u, *p;
-	Py_ssize_t len;
+    char buf[MAXPATHLEN+1];
+    Py_UNICODE *u, *p;
+    Py_ssize_t len;
 
-	/* open the file */
-	if (filename == NULL)
-		return 0;
-	Py_BEGIN_ALLOW_THREADS
-	fd = open(filename, open_flags);
-	Py_END_ALLOW_THREADS
-	if (fd < 0) {
-		fd = _Py_FindSourceFile(filename, buf, sizeof(buf), open_flags);
-		if (fd < 0)
-			return 0;
-		filename = buf;
-	}
+    /* open the file */
+    if (filename == NULL)
+        return 0;
+    Py_BEGIN_ALLOW_THREADS
+    fd = open(filename, open_flags);
+    Py_END_ALLOW_THREADS
+    if (fd < 0) {
+        fd = _Py_FindSourceFile(filename, buf, sizeof(buf), open_flags);
+        if (fd < 0)
+            return 0;
+        filename = buf;
+    }
 
-	/* use the right encoding to decode the file as unicode */
-	found_encoding = PyTokenizer_FindEncoding(fd);
-	encoding = (found_encoding != NULL) ? found_encoding :
-		(char*)PyUnicode_GetDefaultEncoding();
-	lseek(fd, 0, 0); /* Reset position */
-	fob = PyFile_FromFd(fd, (char*)filename, "r", -1, (char*)encoding,
-		NULL, NULL, 1);
-	PyMem_FREE(found_encoding);
-	if (fob == NULL) {
-		PyErr_Clear();
-		close(fd);
-		return 0;
-	}
+    /* use the right encoding to decode the file as unicode */
+    found_encoding = PyTokenizer_FindEncoding(fd);
+    encoding = (found_encoding != NULL) ? found_encoding :
+        (char*)PyUnicode_GetDefaultEncoding();
+    lseek(fd, 0, 0); /* Reset position */
+    fob = PyFile_FromFd(fd, (char*)filename, "r", -1, (char*)encoding,
+        NULL, NULL, 1);
+    PyMem_FREE(found_encoding);
+    if (fob == NULL) {
+        PyErr_Clear();
+        close(fd);
+        return 0;
+    }
 
-	/* get the line number lineno */
-	for (i = 0; i < lineno; i++) {
-		Py_XDECREF(lineobj);
-		lineobj = PyFile_GetLine(fob, -1);
-		if (!lineobj) {
-			err = -1;
-			break;
-		}
-	}
-	Py_DECREF(fob);
-	if (!lineobj || !PyUnicode_Check(lineobj)) {
-		Py_XDECREF(lineobj);
-		return err;
-	}
+    /* get the line number lineno */
+    for (i = 0; i < lineno; i++) {
+        Py_XDECREF(lineobj);
+        lineobj = PyFile_GetLine(fob, -1);
+        if (!lineobj) {
+            err = -1;
+            break;
+        }
+    }
+    Py_DECREF(fob);
+    if (!lineobj || !PyUnicode_Check(lineobj)) {
+        Py_XDECREF(lineobj);
+        return err;
+    }
 
-	/* remove the indentation of the line */
-	u = PyUnicode_AS_UNICODE(lineobj);
-	len = PyUnicode_GET_SIZE(lineobj);
-	for (p=u; *p == ' ' || *p == '\t' || *p == '\014'; p++)
-		len--;
-	if (u != p) {
-		PyObject *truncated;
-		truncated = PyUnicode_FromUnicode(p, len);
-		if (truncated) {
-			Py_DECREF(lineobj);
-			lineobj = truncated;
-		} else {
-			PyErr_Clear();
-		}
-	}
+    /* remove the indentation of the line */
+    u = PyUnicode_AS_UNICODE(lineobj);
+    len = PyUnicode_GET_SIZE(lineobj);
+    for (p=u; *p == ' ' || *p == '\t' || *p == '\014'; p++)
+        len--;
+    if (u != p) {
+        PyObject *truncated;
+        truncated = PyUnicode_FromUnicode(p, len);
+        if (truncated) {
+            Py_DECREF(lineobj);
+            lineobj = truncated;
+        } else {
+            PyErr_Clear();
+        }
+    }
 
-	/* Write some spaces before the line */
-	strcpy(buf, "          ");
-	assert (strlen(buf) == 10);
-	while (indent > 0) {
-		if(indent < 10)
-			buf[indent] = '\0';
-		err = PyFile_WriteString(buf, f);
-		if (err != 0)
-			break;
-		indent -= 10;
-	}
+    /* Write some spaces before the line */
+    strcpy(buf, "          ");
+    assert (strlen(buf) == 10);
+    while (indent > 0) {
+        if(indent < 10)
+            buf[indent] = '\0';
+        err = PyFile_WriteString(buf, f);
+        if (err != 0)
+            break;
+        indent -= 10;
+    }
 
-	/* finally display the line */
-	if (err == 0)
-		err = PyFile_WriteObject(lineobj, f, Py_PRINT_RAW);
-	Py_DECREF(lineobj);
-	if  (err == 0)
-		err = PyFile_WriteString("\n", f);
-	return err;
+    /* finally display the line */
+    if (err == 0)
+        err = PyFile_WriteObject(lineobj, f, Py_PRINT_RAW);
+    Py_DECREF(lineobj);
+    if  (err == 0)
+        err = PyFile_WriteString("\n", f);
+    return err;
 }
 
 static int
 tb_displayline(PyObject *f, const char *filename, int lineno, const char *name)
 {
-	int err = 0;
-        char linebuf[2000];
+    int err = 0;
+    char linebuf[2000];
 
-	if (filename == NULL || name == NULL)
-		return -1;
-	/* This is needed by Emacs' compile command */
+    if (filename == NULL || name == NULL)
+        return -1;
+    /* This is needed by Emacs' compile command */
 #define FMT "  File \"%.500s\", line %d, in %.500s\n"
-	PyOS_snprintf(linebuf, sizeof(linebuf), FMT, filename, lineno, name);
-	err = PyFile_WriteString(linebuf, f);
-	if (err != 0)
-		return err;
-        return _Py_DisplaySourceLine(f, filename, lineno, 4);
+    PyOS_snprintf(linebuf, sizeof(linebuf), FMT, filename, lineno, name);
+    err = PyFile_WriteString(linebuf, f);
+    if (err != 0)
+        return err;
+    return _Py_DisplaySourceLine(f, filename, lineno, 4);
 }
 
 static int
 tb_printinternal(PyTracebackObject *tb, PyObject *f, long limit)
 {
-	int err = 0;
-	long depth = 0;
-	PyTracebackObject *tb1 = tb;
-	while (tb1 != NULL) {
-		depth++;
-		tb1 = tb1->tb_next;
-	}
-	while (tb != NULL && err == 0) {
-		if (depth <= limit) {
-			err = tb_displayline(f,
-			    _PyUnicode_AsString(
-				    tb->tb_frame->f_code->co_filename),
-			    tb->tb_lineno,
-			    _PyUnicode_AsString(tb->tb_frame->f_code->co_name));
-		}
-		depth--;
-		tb = tb->tb_next;
-		if (err == 0)
-			err = PyErr_CheckSignals();
-	}
-	return err;
+    int err = 0;
+    long depth = 0;
+    PyTracebackObject *tb1 = tb;
+    while (tb1 != NULL) {
+        depth++;
+        tb1 = tb1->tb_next;
+    }
+    while (tb != NULL && err == 0) {
+        if (depth <= limit) {
+            err = tb_displayline(f,
+                _PyUnicode_AsString(
+                    tb->tb_frame->f_code->co_filename),
+                tb->tb_lineno,
+                _PyUnicode_AsString(tb->tb_frame->f_code->co_name));
+        }
+        depth--;
+        tb = tb->tb_next;
+        if (err == 0)
+            err = PyErr_CheckSignals();
+    }
+    return err;
 }
 
 #define PyTraceBack_LIMIT 1000
@@ -334,40 +334,40 @@
 int
 PyTraceBack_Print(PyObject *v, PyObject *f)
 {
-	int err;
-	PyObject *limitv;
-	long limit = PyTraceBack_LIMIT;
+    int err;
+    PyObject *limitv;
+    long limit = PyTraceBack_LIMIT;
 
-	if (v == NULL)
-		return 0;
-	if (!PyTraceBack_Check(v)) {
-		PyErr_BadInternalCall();
-		return -1;
-	}
-	limitv = PySys_GetObject("tracebacklimit");
-	if (limitv) {
-		PyObject *exc_type, *exc_value, *exc_tb;
+    if (v == NULL)
+        return 0;
+    if (!PyTraceBack_Check(v)) {
+        PyErr_BadInternalCall();
+        return -1;
+    }
+    limitv = PySys_GetObject("tracebacklimit");
+    if (limitv) {
+        PyObject *exc_type, *exc_value, *exc_tb;
 
-		PyErr_Fetch(&exc_type, &exc_value, &exc_tb);
-		limit = PyLong_AsLong(limitv);
-		if (limit == -1 && PyErr_Occurred()) {
-			if (PyErr_ExceptionMatches(PyExc_OverflowError)) {
-				limit = PyTraceBack_LIMIT;
-			}
-			else {
-				Py_XDECREF(exc_type);
-				Py_XDECREF(exc_value);
-				Py_XDECREF(exc_tb);
-				return 0;
-			}
-		}
-		else if (limit <= 0) {
-			limit = PyTraceBack_LIMIT;
-		}
-		PyErr_Restore(exc_type, exc_value, exc_tb);
-	}
-	err = PyFile_WriteString("Traceback (most recent call last):\n", f);
-	if (!err)
-		err = tb_printinternal((PyTracebackObject *)v, f, limit);
-	return err;
+        PyErr_Fetch(&exc_type, &exc_value, &exc_tb);
+        limit = PyLong_AsLong(limitv);
+        if (limit == -1 && PyErr_Occurred()) {
+            if (PyErr_ExceptionMatches(PyExc_OverflowError)) {
+                limit = PyTraceBack_LIMIT;
+            }
+            else {
+                Py_XDECREF(exc_type);
+                Py_XDECREF(exc_value);
+                Py_XDECREF(exc_tb);
+                return 0;
+            }
+        }
+        else if (limit <= 0) {
+            limit = PyTraceBack_LIMIT;
+        }
+        PyErr_Restore(exc_type, exc_value, exc_tb);
+    }
+    err = PyFile_WriteString("Traceback (most recent call last):\n", f);
+    if (!err)
+        err = tb_printinternal((PyTracebackObject *)v, f, limit);
+    return err;
 }