> In-band signalling is [n]ever going to remain in-band signalling This is the root of all spreadsheet evil, right here. TSV. Replace/strip/ban tab + newline

> In-band signalling is [n]ever going to remain in-band signalling This is the root of all spreadsheet evil, right here. TSV. Replace/strip/ban tab + newline from fields when writing. Done. If you need those characters, encode them using backslashes if you absolutely must (i.e. you're an Excel weenie doing Excel weenie things that really aren't "spreadsheet" things but since you only know of one hammer you then use that hammer to do everything)