anchor.diff:                        ),
   
     ParamsList = clj_core:to_list(Params),
  -  clj_utils:error_when( not lists:all(fun is_valid_bind_symbol/1, ParamsList)
  -                      , [ <<"Params must be valid binding symbols, had: ">>
  -                        , Params
  -                        ]
  -                      , clj_env:location(Env0)
  -                      ),
  +  %% clj_utils:error_when( not lists:all(fun is_valid_bind_symbol/1, ParamsList)
  +  %%                     , [ <<"Params must be valid binding symbols, had: ">>
  +  %%                       , Params
  +  %%                       ]
  +  %%                     , clj_env:location(Env0)
  +  %%                     ),
   
     IsNotAmpersandFun = fun(X) -> clj_core:str(X) =/= <<"&">> end,
     ParamsNames       = lists:filter(IsNotAmpersandFun, ParamsList),
  
positive.code: 
  -spec parse_pattern(any(), clj_env:env()) -> clj_env:env().
  parse_pattern(Form, Env) ->
    case clj_core:'symbol?'(Form) of
      true ->
        Ast = #{ op   => binding
               , env  => Env
               , name => Form
  
negative.code:   MapExpr = #{ op   => erl_map
               , env  => Env4
               , form => Map
               , tag  => 'clojerl.erlang.Map'
               , keys => KeysExpr
               , vals => ValsExpr
               },
  