ref: 3f5a4e9f7e3c0d1e7c43d2974049e2eb7bc7b5a0 dir: /sys/src/cmd/rc/getflags.h/
#define NFLAG 128 extern char **flag[NFLAG]; extern char *cmdname; extern char *flagset[]; int getflags(int, char*[], char*, int);