Reprint the last line after rewind so there will be no highlighted parens left.

Trundle · Trundle · commit 5ee29ea05fdb · 2009-07-23T16:26:15.000+02:00
diff --git a/bpython/cli.py b/bpython/cli.py
@@ -1080,6 +1080,8 @@ def undo(self, n=1):
 
         self.history = self.history[:-n]
         self.reevaluate()
+        # This will unhighlight highlighted parens
+        self.print_line(self.s)
 
     def enter_hist(self):
         """Set flags for entering into the history by pressing up/down"""
