io.c:2721
static VALUE
rb_f_p(argc, argv)
    int argc;
    VALUE *argv;
{
    int i;

    for (i=0; i<argc; i++) {
	rb_p(argv[i]);
    }
    if (TYPE(rb_stdout) == T_FILE) {
	rb_io_flush(rb_stdout);
    }
    return Qnil;
}
