Mcat cat.c /^main(argc, argv)$/ cook_args cat.c /^cook_args(argv)$/ cook_buf cat.c /^cook_buf(fp)$/ err cat.c /^err(ex, fmt, va_alist)$/ raw_args cat.c /^raw_args(argv)$/ raw_cat cat.c /^raw_cat(rfd)$/