I've seen it used in JavaScript for compression before, on the same theory as one of those installers that starts off by unpacking itself. That's not as import

I've seen it used in JavaScript for compression before, on the same theory as one of those installers that starts off by unpacking itself. That's not as important now that everything gzips. I've also used it myself on occasion in quick-and-dirty scripts, but never in production code. It's just too easy to make a small mistake and blow your security wide open.