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I am more and more on your side. If this function was a builtin, how many reader will check its implementation?

But it is not a builtin. Someone else is going to have to maintain this one day.

> insert quote about writing your code as if the person who will have to maintain it next is a violent psychopath who knows where you live

This maybe true even if the next person to maintain that is yourself! I have certainly wished terrible vengeance to be visited on past me.

Totally agreed. While we're at it, let's make Brainfuck the official POSIX shell language.