argf_readlines   6423 io.c           static VALUE argf_readlines(int, VALUE *, VALUE);
argf_readlines   6439 io.c           	return argf_readlines(argc, argv, argf);
argf_readlines   8675 io.c               rb_define_method(rb_cARGF, "readlines", argf_readlines, -1);
argf_readlines   8676 io.c               rb_define_method(rb_cARGF, "to_a", argf_readlines, -1);