ref: a351bcdccdf5a4273bc8dc3360a48fbb8b8aa9ea
dir: /src/becho.c/
#include <u.h> #include <libc.h> void usage(void) { fprint(2, "usage: %s [-nv] [-d delims] args\n", argv0); exits("usage"); } void main(int argc, char* argv[]) { int nflag = 0; int vflag = 0; char* d = "[]"; int i; ARGBEGIN{ case 'v': vflag = 1; break; case 'n': nflag = 1; break; case 'd': d = ARGF(); if (d == nil || strlen(d) < 2) usage(); break; default: usage(); }ARGEND; for (i = 0; i < argc; i++) if (vflag) print("%c%s%c ", d[0], argv[i], d[1]); else print("%s ", argv[i]); if (!nflag) print("\n"); exits(nil); }