add missing arguments to the scan op

theano/sandbox/scan_module/scan.py

@@ -492,6 +492,8 @@ def scan(fn,
                               outputs=outputs,
                               lengths=lengths,
                               switches=[],
+                              mintaps=mintaps,
+                              index=t,
                               options=options,
                               as_repeatUntil=cond)
     # Note that we get here all the outputs followed by the update rules to

theano/sandbox/scan_module/scan_op.py

@@ -45,11 +45,14 @@ class ScanOp(PureOp):
                  outputs,
                  lengths,
                  switches,
+                 mintaps,
+                 index,
                  options,
                  as_repeatUntil):
         self.inputs = inputs
         self.outputs = outputs
 
+        self.index = index
         self.switches = switches
         self.lengths = lengths
         self.mintaps = mintaps