argf_each_line   11512 io.c               return argf_each_line(argc, argv, argf);
argf_each_line   12417 io.c               rb_define_method(rb_cARGF, "each",  argf_each_line, -1);
argf_each_line   12418 io.c               rb_define_method(rb_cARGF, "each_line",  argf_each_line, -1);