extern char *argv0;#define	ARGBEGIN	for((argv0? 0: (argv0=*argv)),argv++,argc--;\			    argv[0] && argv[0][0]=='-' && argv[0][1];\			    argc--, argv++) {\				char *_args, *_argt;\				Rune _argc;\				_args = &argv[0][1];\				if(_args[0]=='-' && _args[1]==0){\					argc--; argv++; break;\				}\				_argc = 0;\				while(*_args && (_args += chartorune(&_argc, _args)))\				switch(_argc)#define	ARGEND		SET(_argt);USED(_argt); USED(_argc); USED(_args);}USED(argv); USED(argc);#define	ARGF()		(_argt=_args, _args="",\				(*_argt? _argt: argv[1]? (argc--, *++argv): 0))#define	ARGC()		_argc #define	EARGF(x)		(_argt=_args, _args="",\				(*_argt? _argt: argv[1]? (argc--, *++argv): (x, (char*)0)))