anchor.diff:  		      filename:join([<<"A:">>,<<"C:usr">>,<<"foo.erl">>]),
   		  ?line <<"d:/foo">> = filename:join([$D, $:, $/, []], <<"foo">>),
   		  ok;
  -	      {unix, _} ->
  +	      _ ->
   		  ok
   	  end.
   
  
positive.code: 		      filename:join(["A:","C:usr","foo.erl"]),
  		  ?line "d:/foo" = filename:join([$D, $:, $/, []], "foo"),
  		  ok;
  	      {unix, _} ->
  		  ok
  	  end.
  
  
negative.code: 	    ?line <<"a:/erlang">> = filename:absname(<<"a:erlang">>, <<Drive:8,":/">>),
  	    
  	    ok;
  	_ ->
  	    ?line <<"/usr/foo">> = filename:absname(<<"foo">>, <<"/usr">>),
  	    ?line <<"/usr/../ebin">> = filename:absname(<<"../ebin">>, <<"/usr">>),
  	    
  