2 files changed, 26 insertions, 7 deletions
diff --git a/test-suite/bugs/opened/1596.v b/test-suite/bugs/opened/1596.v
index 91cd09910..7c5dc4167 100644
--- a/test-suite/bugs/opened/1596.v
+++ b/test-suite/bugs/opened/1596.v
@@ -1,10 +1,11 @@
-
 Require Import Relations.
 Require Import FSets.
 Require Import Arith.
 Require Import Omega.
 Unset Standard Proposition Elimination Names.
 
+Set Keyed Unification.
+
 Lemma Bool_elim_bool : forall (b:bool),b=true \/ b=false.
   destruct b;try tauto.
 Qed.
@@ -255,9 +256,6 @@ n).
     induction m;simpl;intro.
     elim (Bool_elim_bool (H.mem (MessageSpi.MNam n,n0) h));intros.
     apply SynInc;apply H.mem_2;trivial.
-    
-    Fail rewrite H in H0. (* !! impossible here !! *)
-Abort.
-(*    discriminate H0.
-  Qed.*)
+    rewrite H in H0. discriminate. (* !! impossible here !! *)
+  Qed.
 End B.
 \ No newline at end of file
diff --git a/test-suite/success/keyedrewrite.v b/test-suite/success/keyedrewrite.v
index 438613b44..c99b16e2b 100644
--- a/test-suite/success/keyedrewrite.v
+++ b/test-suite/success/keyedrewrite.v
@@ -1 +1,22 @@
-Lemma foo : 
-\ No newline at end of file
+Section foo.
+Variable f : nat -> nat. 
+
+Definition g := f.
+
+Variable lem : g 0 = 0.
+
+Goal f 0 = 0.
+Proof.
+  Fail rewrite lem.
+Abort.
+
+Declare Equivalent Keys @g @f.
+(** Now f and g are considered equivalent heads for subterm selection *)
+Goal f 0 = 0.
+Proof.
+  rewrite lem.
+  reflexivity.
+Qed.
+
+Print Equivalent Keys.
+End foo.