argf_gets        6307 io.c           static VALUE argf_gets(int, VALUE *, VALUE);
argf_gets        6346 io.c           	return argf_gets(argc, argv, argf);
argf_gets        6415 io.c               line = argf_gets(argc, argv, argf);
argf_gets        8677 io.c               rb_define_method(rb_cARGF, "gets", argf_gets, -1);