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+(* Scheme Equality not robust wrt names *)
+
+Module A1.
+  Inductive A (T : Type) := C (a : T).
+  Scheme Equality for A. (* success *)
+End A1.
+
+Module A2.
+  Inductive A (x : Type) := C (a : x).
+  Scheme Equality for A. 
+End A2.