anchor.diff:  handle_ns(Meta, Name, Clauses, Env) ->
     handle_ns(Meta, Name, Clauses, <<"">>, Env).
   handle_ns(Meta, Name, Clauses, _Doc, Env) ->
  -  E = case ?m(Env, namespace) of
  -        nil -> Env#{namespace => Name};
  -        NS -> kapok_error:form_error(Meta, ?m(Env, file), ?MODULE, {multiple_namespace, {NS, Name}})
  -      end,
  +  Env1 = case ?m(Env, namespace) of
  +           nil -> Env#{namespace => Name};
  +           NS -> kapok_error:form_error(Meta, ?m(Env, file), ?MODULE, {multiple_namespace, {NS, Name}})
  +         end,
     case ets:info(kapok_namespaces) of
       undefined -> init_namespace_table();
       _ -> ok
     end,
     add_namespace(Name),
  -  {_, TEnv} = lists:mapfoldl(fun handle_namespace_clause/2, E, Clauses),
  -  TEnv.
  +  {_, TEnv1} = lists:mapfoldl(fun handle_namespace_clause/2, Env1, Clauses),
  +  TEnv1.
   
   handle_namespace_clause({list, _, [{identifier, _, 'require'} | T]}, Env) ->
     handle_require_clause(T, Env);
  
positive.code:       end
    end,
    kapok_env:pop_scope(TEnv3#{function => Function}).
  
  %% module
  
  
negative.code:                      end,
                       Env,
                       Ast),
    build_namespace(?m(TEnv, namespace), TEnv, Callback).
  
  handle_ast({list, Meta, [{identifier, _, ns}, {identifier, _, Id}, {C, _, Doc} | Left]}, Env)
      when ?is_string(C) ->
  