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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)))