date_s_rfc2822 9267 ext/date/date_core.c rb_define_singleton_method(cDate, "rfc2822", date_s_rfc2822, -1); date_s_rfc2822 9268 ext/date/date_core.c rb_define_singleton_method(cDate, "rfc822", date_s_rfc2822, -1);