(Obligatory: The `with` statement has long been deprecated, but unfortunately since there is a lot of legacy code which relies on it, one cannot always avoid interacting with code that relies on `with`.) The following code works fine on all other browsers. Safari throws "ReferenceError: Can't find variable: abc". ``` with({abc:3}) { function foo() { console.log(abc); } foo(); } ``` I am managing a large-ish (~4M MAU) platform for which this has become an issue in certain situations, and currently I just have to tell users "Please use Firefox or Chrome". I'd like to eventually get my hands dirty and try to implement a hacky fix here (it involves interaction with user-land code, so it's not easy), but if the `with` behavior could be brought into line with other engines that would be excellent.