anchor.diff:                  , val_atom  => '*print-readably*__val'
                   , meta      => #{dynamic => true}
                   }
  +
               , <<"*data-readers*">> =>
                  #{ ?TYPE     => 'clojerl.Var'
                   , ns        => <<"clojure.core">>
  
positive.code:                 , val_atom  => '*default-data-reader-fn*__val'
                  , meta      => #{dynamic => true}
                  }
             , <<"*warn-on-infer*">> =>
                 #{ ?TYPE     => 'clojerl.Var'
                  , ns        => <<"clojure.core">>
  
negative.code: 
  '*default-data-reader-fn*__val'() ->
    var_value(<<"#'clojure.core/*default-data-reader-fn*">>, ?NIL).
  
  '*reader-resolver*__val'() ->
    var_value(<<"#'clojure.core/*reader-resolver*">>, ?NIL).
  
  '*warn-on-infer*__val'() ->
    var_value(<<"#'clojure.core/*warn-on-infer*">>, false).
  