I think it would be enough for: 1. the field separator to be shown as a special character 2. the row separator to be (optionally) be interpreted as a linefeed

I think it would be enough for: 1. the field separator to be shown as a special character 2. the row separator to be (optionally) be interpreted as a linefeed IIRC 1) is true for Notepad++, but not 2).