r77895 broke doctest.

pitrou · pitrou · commit b3d77007f4e6 · 2010-01-31T23:12:29.000Z
diff --git a/Lib/doctest.py b/Lib/doctest.py
@@ -247,7 +247,8 @@ def getvalue(self):
         return result
 
     def truncate(self, size=None):
-        StringIO.truncate(self, size)
+        self.seek(size)
+        StringIO.truncate(self)
 
 # Worst-case linear-time ellipsis matching.
 def _ellipsis_match(want, got):
