anchor.diff:      reply(
         case args_ok(Spec, length(Args)) of
             ok ->
  -              os:cmd(cmd_string(Exec, Args));
  +              OsCmd = cmd_string(Exec, Args),
  +              io:format("~s exec: ~s~n", [?MODULE, OsCmd]),
  +              os:cmd(OsCmd);
             Oops ->
                 io_lib:format("~s~nusage: ~s", [Oops, Cmd#cmd.synopsis])
         end,
  
positive.code: list_synopsis(#state{ cmds=[] }) -> [];
  list_synopsis(#state{ cmds=Cmds }) -> 
      "I also respond to these commands:\r\n"
          ++ string:join([S || #cmd{ synopsis=S } <- Cmds], ", ").
  
  reply(Message, State) ->    
      {#yabot_msg{ message=Message }, State}.
  
negative.code: 
  cmd_string(Exec, Args) ->
      string:join(
        [Exec|[os_escape(Arg) || Arg <- Args]],
        " "
       ).
  
  