rb_io_gets       2929 io.c           	line = rb_io_gets(current_file);
rb_io_gets       2978 io.c               line = rb_io_gets(current_file);
rb_io_gets       781 ruby.c         	    while (!NIL_P(line = rb_io_gets(f))) {
rb_io_gets       796 ruby.c         	    line = rb_io_gets(f);