[nrdvana]

Well, it depends if your self-rolled version is a complete library, or a quick sidetrack you implemented as a bigger project. If you published it as an installable independent library, and Ruby was using it, I think it's safe to say that you had a complete product. The evil of self-rolled CSV is that people often build on an incomplete understanding of the problem, don't have unit tests, or do something simplistic that necessitates workarounds like this: https://metacpan.org/pod/Data::TableReader::Decoder::IdiotCS...

(case in point, that crazy workaround is only possible because of a large expenditure of effort by the authors of perl's Text::CSV which very few CSV parsers would have implemented)