public override ReturnCode Execute( Interpreter interpreter, IClientData clientData, ArgumentList arguments, ref Result result ) { ReturnCode code = ReturnCode.Ok; if (interpreter != null) { if (arguments != null) { if (arguments.Count >= 2) { StringBuilder builder = null; code = StringOps.AppendWithFormat( interpreter, arguments[1], ArgumentList.GetRange(arguments, 2), interpreter.CultureInfo, ref builder, ref result); if (code == ReturnCode.Ok) { result = builder; } } else { result = "wrong # args: should be \"format formatString ?arg ...?\""; code = ReturnCode.Error; } } else { result = "invalid argument list"; code = ReturnCode.Error; } } else { result = "invalid interpreter"; code = ReturnCode.Error; } return(code); }