I haven’t worked out if the BNF is unambiguous (RFC 4180) but if you have a CSV in a cell you would escape any ambiguous characters. An unescaped cell within a

I haven’t worked out if the BNF is unambiguous (RFC 4180) but if you have a CSV in a cell you would escape any ambiguous characters. An unescaped cell within a CSV will break most CSV parsers in the world even with recursion handling. https://datatracker.ietf.org/doc/html/rfc4180 https://datatracker.ietf.org/doc/html/rfc4180