src/Pure/Isar/local_theory.ML

 sig
   type operations
   val target_of: local_theory -> Proof.context
   val raw_theory_result: (theory -> 'a * theory) -> local_theory -> 'a * local_theory
   val raw_theory: (theory -> theory) -> local_theory -> local_theory
+  val full_naming: local_theory -> NameSpace.naming
   val full_name: local_theory -> bstring -> string
   val theory_result: (theory -> 'a * theory) -> local_theory -> 'a * local_theory
   val theory: (theory -> theory) -> local_theory -> local_theory
   val target_result: (Proof.context -> 'a * Proof.context) -> local_theory -> 'a * local_theory
   val target: (Proof.context -> Proof.context) -> local_theory -> local_theory

       |> ProofContext.transfer thy';
   in (res, lthy') end;
 
 fun raw_theory f = #2 o raw_theory_result (f #> pair ());
 
-fun full_name lthy =
-  let
-    val naming = Sign.naming_of (ProofContext.theory_of lthy)
-      |> NameSpace.sticky_prefix (#theory_prefix (get_lthy lthy))
-      |> NameSpace.qualified_names;
-  in NameSpace.full naming end;
+fun full_naming lthy =
+  Sign.naming_of (ProofContext.theory_of lthy)
+  |> NameSpace.sticky_prefix (#theory_prefix (get_lthy lthy))
+  |> NameSpace.qualified_names;
+
+val full_name = NameSpace.full o full_naming;
 
 fun theory_result f lthy = lthy |> raw_theory_result (fn thy => thy
   |> Sign.sticky_prefix (#theory_prefix (get_lthy lthy))
   |> Sign.qualified_names
   |> f