Fix valueFrom field overriding default binding for arrays

Author: Anton Khodak

cwltool/builder.py

@@ -87,6 +87,12 @@ def bind_input(self, schema, datum, lead_pos=None, tail_pos=None):
                 binding["position"] = aslist(lead_pos) + [0] + aslist(tail_pos)
 
             binding["datum"] = datum
+            if "valueFrom" in binding:
+                for bi in bindings:
+                    bi["position"] = binding["position"] + bi["position"]
+                bindings.append(binding)
+
+                return bindings
 
         # Handle union types
         if isinstance(schema["type"], list):