You don't have to use $'', you can also use literal tabs (ctrl-v to insert literals). The main difference between macOS and Linux that people notice is that mac

You don't have to use $'', you can also use literal tabs (ctrl-v to insert literals). The main difference between macOS and Linux that people notice is that macOS sed doesn't itself interpret \t (so you have to use literal tabs or $'' there). \r\n is Windows, not Unix. What about Unicode? (Btw, UTF-8 was created by unixers Rob Pike and Ken Thompson https://www.cl.cam.ac.uk/~mgk25/ucs/utf-8-history.txt https://www.cl.cam.ac.uk/~mgk25/ucs/utf-8-history.txt )