Except pipe is really easy to get as a typo. It's right next to the enter key. And then you're dealing with escaping characters and before you know if you've

Except pipe is really easy to get as a typo. It's right next to the enter key. And then you're dealing with escaping characters and before you know if you've rolled your own file format. Been there. Use a lib that implements a documented standard, even a bad one. Only problem is Excel, which basically standardizes on CSV and occasionally mangles your data into malformed dates because reasons anyways.