I would generalize that further and say that shell processing works well when your data is well-behaved wrt the thing you are trying to do. But once you start v

I would generalize that further and say that shell processing works well when your data is well-behaved wrt the thing you are trying to do. But once you start venturing into untrusted data, escaping, and yes, Unicode, things can become hairy. So basically you should always be doing some sanity checks when working in shell