“I regret this decision, and a thousand curses on anyone who chooses to use this in a code base I have to work on”
I’ve been at the receiving end of this particular “feature” and it was awful. Your logic is splayed all over the place, and you’ll often get mystery errors, because someone else’s code makes some undocumented, un-typed assumption about the availability of some magically named variables. This is not a feature, this is bugs and misery in disguise.
R is even more wild because you can access the entire definition of a function from the function object itself. You can literally make a new function that's a copy of an existing function with some lines of code injected.
