diff --git a/Lib/fontTools/misc/arrayTools.py b/Lib/fontTools/misc/arrayTools.py
index 9c7ae5d00..1d9765010 100644
--- a/Lib/fontTools/misc/arrayTools.py
+++ b/Lib/fontTools/misc/arrayTools.py
@@ -121,97 +121,98 @@ def intRect(rect1):
     yMax = int(math.ceil(yMax))
     return (xMin, yMin, xMax, yMax)
 
+
 class Vector(object):
-	"""A math-like vector."""
+    """A math-like vector."""
 
-	def __init__(self, values, keep=False):
-		self.values = values if keep else list(values)
+    def __init__(self, values, keep=False):
+        self.values = values if keep else list(values)
 
-	def __getitem__(self, index):
-		return self.values[index]
+    def __getitem__(self, index):
+        return self.values[index]
 
-	def __len__(self):
-		return len(self.values)
+    def __len__(self):
+        return len(self.values)
 
-	def __repr__(self):
-		return "Vector(%s)" % self.values
+    def __repr__(self):
+        return "Vector(%s)" % self.values
 
-	def _vectorOp(self, other, op):
-		if isinstance(other, Vector):
-			assert len(self.values) == len(other.values)
-			a = self.values
-			b = other.values
-			return [op(a[i], b[i]) for i in range(len(self.values))]
-		if isinstance(other, Number):
-			return [op(v, other) for v in self.values]
-		raise NotImplementedError
+    def _vectorOp(self, other, op):
+        if isinstance(other, Vector):
+            assert len(self.values) == len(other.values)
+            a = self.values
+            b = other.values
+            return [op(a[i], b[i]) for i in range(len(self.values))]
+        if isinstance(other, Number):
+            return [op(v, other) for v in self.values]
+        raise NotImplementedError
 
-	def _scalarOp(self, other, op):
-		if isinstance(other, Number):
-			return [op(v, other) for v in self.values]
-		raise NotImplementedError
+    def _scalarOp(self, other, op):
+        if isinstance(other, Number):
+            return [op(v, other) for v in self.values]
+        raise NotImplementedError
 
-	def _unaryOp(self, op):
-		if isinstance(other, Number):
-			return [op(v) for v in self.values]
-		raise NotImplementedError
+    def _unaryOp(self, op):
+        if isinstance(other, Number):
+            return [op(v) for v in self.values]
+        raise NotImplementedError
 
-	def __add__(self, other):
-		return Vector(self._vectorOp(other, operator.add), keep=True)
-	def __iadd__(self, other):
-		self.values = self._vectorOp(other, operator.add)
-		return self
-	__radd__ = __add__
+    def __add__(self, other):
+        return Vector(self._vectorOp(other, operator.add), keep=True)
+    def __iadd__(self, other):
+        self.values = self._vectorOp(other, operator.add)
+        return self
+    __radd__ = __add__
 
-	def __sub__(self, other):
-		return Vector(self._vectorOp(other, operator.sub), keep=True)
-	def __isub__(self, other):
-		self.values = self._vectorOp(other, operator.sub)
-		return self
-	def __rsub__(self, other):
-		return other + (-self)
+    def __sub__(self, other):
+        return Vector(self._vectorOp(other, operator.sub), keep=True)
+    def __isub__(self, other):
+        self.values = self._vectorOp(other, operator.sub)
+        return self
+    def __rsub__(self, other):
+        return other + (-self)
 
-	def __mul__(self, other):
-		return Vector(self._scalarOp(other, operator.mul), keep=True)
-	def __imul__(self, other):
-		self.values = self._scalarOp(other, operator.mul)
-		return self
-	__rmul__ = __mul__
+    def __mul__(self, other):
+        return Vector(self._scalarOp(other, operator.mul), keep=True)
+    def __imul__(self, other):
+        self.values = self._scalarOp(other, operator.mul)
+        return self
+    __rmul__ = __mul__
 
-	def __truediv__(self, other):
-		return Vector(self._scalarOp(other, operator.div), keep=True)
-	def __itruediv__(self, other):
-		self.values = self._scalarOp(other, operator.div)
-		return self
+    def __truediv__(self, other):
+        return Vector(self._scalarOp(other, operator.div), keep=True)
+    def __itruediv__(self, other):
+        self.values = self._scalarOp(other, operator.div)
+        return self
 
-	def __pos__(self):
-		return Vector(self._unaryOp(other, operator.pos), keep=True)
-	def __neg__(self):
-		return Vector(self._unaryOp(other, operator.neg), keep=True)
-	def __round__(self):
-		return Vector(self._unaryOp(other, round), keep=True)
-	def toInt(self):
-		return self.__round__()
+    def __pos__(self):
+        return Vector(self._unaryOp(other, operator.pos), keep=True)
+    def __neg__(self):
+        return Vector(self._unaryOp(other, operator.neg), keep=True)
+    def __round__(self):
+        return Vector(self._unaryOp(other, round), keep=True)
+    def toInt(self):
+        return self.__round__()
 
-	def __eq__(self, other):
-		if type(other) == Vector:
-			return self.values == other.values
-		else:
-			return self.values == other
-	def __ne__(self, other):
-		return not self.__eq__(other)
+    def __eq__(self, other):
+        if type(other) == Vector:
+            return self.values == other.values
+        else:
+            return self.values == other
+    def __ne__(self, other):
+        return not self.__eq__(other)
 
-	def __bool__(self):
-		return any(self.values)
-	__nonzero__ = __bool__
+    def __bool__(self):
+        return any(self.values)
+    __nonzero__ = __bool__
 
-	def __abs__(self):
-		return math.sqrt(sum([x*x for x in self.values]))
-	def dot(self, other):
-		a = self.values
-		b = other.values if type(other) == Vector else b
-		assert len(a) == len(b)
-		return sum([a[i] * b[i] for i in range(len(a))])
+    def __abs__(self):
+        return math.sqrt(sum([x*x for x in self.values]))
+    def dot(self, other):
+        a = self.values
+        b = other.values if type(other) == Vector else b
+        assert len(a) == len(b)
+        return sum([a[i] * b[i] for i in range(len(a))])
 
 
 def pairwise(iterable, reverse=False):