Indeed, if I recall, parsing ISO8601 dates using binary pattern matching based upon 4 digits.
kip
ex_cldr Core Team
Fire-Dragon-DoL
Unfortunately, the reasoning for -9999 and 9999 as limits are related to the ISO8601 format.
However (funny) they have been misinterpreted, ISO8601 allows only years between 0000 and 9999, not -9999.
It’s possible to use bigger years, but it’s an agreement that is performed between the sender and the receiver (in this case, the developer and the Elixir development team).
Personally, since Elixir is already “at fault”, might as well increase the size.
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