extern char *argv0;
#define SET(x)          ((x)=0)
#define USED(x)         if(x);else
#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)))