[zarzavat]

CSV quoting is dialect dependent. Honestly you should just never use CSV for anything if you can avoid it, it's inferior to TSV (or better yet JSON/JSONL) and has a tendency to appear like it's working but actually be hiding bugs like this one.

[j16sdiz]

Most CSV dialects have no problem having double quoted commas.

The "dialect dependent" part is usually about escaping double quotes, new lines and line continuations.

Not a portable format, but it is not too bad (for this use) either considering the country list is mostly static

[jorams]

I'd go so far as to say any implementation that doesn't conform to RFC 4180[1] is broken and should be fixed. The vast majority of implementations get this right, it's just that some that don't are so high profile it causes people to throw up their hands and give up.

[1]: https://datatracker.ietf.org/doc/html/rfc4180