1. 2019-07-31 [ruby-core:94067] [Ruby master Bug#15994] irb miscalc ruby-core tietew 2. 2019-07-30 [ruby-core:94017] [Ruby master Bug#15994] irb miscalc ruby-core ko1 3. 2019-07-11 [ruby-core:93669] [Ruby master Bug#15994] irb miscalc ruby-core tietew