anchor.diff:  
   case_fail(L, St) ->
       Cv = c_var(omega),
  -    fail_clause([Cv], c_tuple([c_atom(case_clause),Cv]), L, St).
  +    fail_clause([Cv], c_tuple([c_atom(case_clause),Cv]), [], L, St).
   
   %% rec_clauses(RecClauses, Env, Line, State) -> {Clause,Timeout,After,State}.
   
  
positive.code:              atts=[],                           %Attrubutes
               defs=[],                           %Function definitions.
               env=[],                            %Environment
               func=[],                           %Current function
               anno=[],                           %Current annotation
               opts=[],                           %Options
               file=[],                           %File name
               vc=0,                              %Variable counter
               fc=0                               %Function counter
              }).
  
negative.code: 
  try_case_fail(L, St) ->
      Cv = c_var(omega),
      fail_clause([Cv], c_tuple([c_atom(try_clause),Cv]), [], L, St).
  
  %% try_exception(CatchClauses, Env, L, State) -> {Vars,#c_case{},State}.
  
  