From d748db59cc9a89095b1d1e1e414203d18d50d387 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Mon, 20 Feb 2017 18:24:21 -0600
Subject: [PATCH] [interpolatable] Minor

---
 Snippets/interpolatable.py | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/Snippets/interpolatable.py b/Snippets/interpolatable.py
index cbc5abd5a..33f06f5b8 100755
--- a/Snippets/interpolatable.py
+++ b/Snippets/interpolatable.py
@@ -18,23 +18,27 @@ class PerContourPen(BasePen):
 		BasePen.__init__(self, glyphset)
 		self._glyphset = glyphset
 		self._Pen = Pen
+		self._pen = None
 		self.value = []
 	def _moveTo(self, p0):
 		self._newItem()
-		self.value[-1].moveTo(p0)
+		self._pen.moveTo(p0)
 	def _lineTo(self, p1):
-		self.value[-1].lineTo(p1)
+		self._pen.lineTo(p1)
 	def _qCurveToOne(self, p1, p2):
-		self.value[-1].qCurveTo(p1, p2)
+		self._pen.qCurveTo(p1, p2)
 	def _curveToOne(self, p1, p2, p3):
-		self.value[-1].curveTo(p1, p2, p3)
+		self._pen.curveTo(p1, p2, p3)
 	def _closePath(self):
-		self.value[-1].closePath()
+		self._pen.closePath()
+		self._pen = None
 	def _endPath(self):
-		self.value[-1].endPath()
+		self._pen.endPath()
+		self._pen = None
 
 	def _newItem(self):
-		self.value.append(self._Pen(glyphset=self._glyphset))
+		self._pen = pen = self._Pen(glyphset=self._glyphset)
+		self.value.append(pen)
 
 class PerContourOrComponentPen(PerContourPen):