anchor.diff:  	 init_per_group/2,end_per_group/2,
   	 pmatch/1,mixed/1,aliases/1,match_in_call/1,
   	 untuplify/1,shortcut_boolean/1,letify_guard/1,
  -	 selectify/1,underscore/1]).
  +	 selectify/1,underscore/1,coverage/1]).
   	 
   -include_lib("test_server/include/test_server.hrl").
   
  
positive.code: all() -> 
      test_lib:recompile(?MODULE),
      [pmatch, mixed, aliases, match_in_call, untuplify,
       shortcut_boolean, letify_guard, selectify, underscore].
  
  groups() -> 
      [].
  
negative.code:     _ = is_list(Config),
      ok.
  
  coverage(Config) when is_list(Config) ->
      %% Cover beam_dead.
      ok = coverage_1(x, a),
      ok = coverage_1(x, b).
  
  coverage_1(B, Tag) ->
      case Tag of
  	a -> coverage_2(1, a, B);
  	b -> coverage_2(2, b, B)
      end.
  
  coverage_2(1, a, x) -> ok;
  coverage_2(2, b, x) -> ok.
  
  id(I) -> I.
  