[vitus]

And, I personally hate macros that pretend to be functions but provide no visual indicator that they're not actually functions. For instance, `#define min(x, y) (x < y ? x : y)` evaluates its args multiple times. It's a little less bad when it only takes a single argument, but I am still irritated by things like htonl.

I think the "best" approach here would be to make it a function-like macro, and also change the name to all caps.

(Also, I tend to agree that `defer { ... };` is still cursed -- it requires the trailing semicolon, which further breaks the illusion of a keyword that takes a block scope.)