fixed get_name_tags in order to work with hyps;

--- a/src/Pure/proofterm.ML	Thu Feb 21 20:10:34 2002 +0100
+++ b/src/Pure/proofterm.ML	Thu Feb 21 20:11:05 2002 +0100
@@ -97,7 +97,7 @@
   val oracle_proof : string -> term -> proof
   val thm_proof : Sign.sg -> string * (string * string list) list ->
     term list -> term -> proof -> proof
-  val get_name_tags : term -> proof -> string * (string * string list) list
+  val get_name_tags : term list -> term -> proof -> string * (string * string list) list
 
   (** rewriting on proof terms **)
   val add_prf_rrules : (proof * proof) list -> theory -> theory
@@ -886,7 +886,7 @@
 
 (** see pattern.ML **)
 
-fun flt i = filter (fn n => n < i);
+fun flt (i: int) = filter (fn n => n < i);
 
 fun fomatch Ts tymatch j =
   let
@@ -1108,15 +1108,14 @@
 
 fun thm_proof sign (name, tags) hyps prop prf =
   let
-    val hyps' = gen_distinct op aconv hyps;
-    val prop = Logic.list_implies (hyps', prop);
+    val prop = Logic.list_implies (hyps, prop);
     val nvs = needed_vars prop;
     val args = map (fn (v as Var (ixn, _)) =>
         if ixn mem nvs then Some v else None) (vars_of prop) @
       map Some (sort (make_ord atless) (term_frees prop));
     val opt_prf = if ! proofs = 2 then
         #4 (shrink [] 0 (rewrite_prf fst (ProofData.get_sg sign)
-          (foldr (uncurry implies_intr_proof) (hyps', prf))))
+          (foldr (uncurry implies_intr_proof) (hyps, prf))))
       else MinProof (mk_min_proof ([], prf));
     val head = (case strip_combt (fst (strip_combP prf)) of
         (PThm ((old_name, _), prf', prop', None), args') =>
@@ -1127,15 +1126,18 @@
             PThm ((name, tags), opt_prf, prop, None)
       | _ => PThm ((name, tags), opt_prf, prop, None))
   in
-    proof_combP (proof_combt' (head, args), map Hyp hyps')
+    proof_combP (proof_combt' (head, args), map Hyp hyps)
   end;
 
-fun get_name_tags prop prf = (case strip_combt (fst (strip_combP prf)) of
+fun get_name_tags hyps prop prf =
+  let val prop = Logic.list_implies (hyps, prop) in
+    (case strip_combt (fst (strip_combP prf)) of
       (PThm ((name, tags), _, prop', _), _) =>
         if prop=prop' then (name, tags) else ("", [])
     | (PAxm (name, prop', _), _) =>
         if prop=prop' then (name, []) else ("", [])
-    | _ => ("", []));
+    | _ => ("", []))
+  end;
 
 end;
 

--- a/src/Pure/thm.ML	Thu Feb 21 20:10:34 2002 +0100
+++ b/src/Pure/thm.ML	Thu Feb 21 20:11:05 2002 +0100
@@ -494,7 +494,8 @@
 
 (* name and tags -- make proof objects more readable *)
 
-fun get_name_tags (Thm {prop, der = (_, prf), ...}) = Pt.get_name_tags prop prf;
+fun get_name_tags (Thm {hyps, prop, der = (_, prf), ...}) =
+  Pt.get_name_tags hyps prop prf;
 
 fun put_name_tags x (Thm {sign_ref, der = (ora, prf), maxidx, shyps, hyps, prop}) =
   Thm {sign_ref = sign_ref,