As in postal() ca is the correct (2 letter iso) country code for Canada, so this should be corrected in phone() accordingly.
I will then also update the 2.4 docs:
correct and unify country codes for validation
The original 3 letter version should be left behind so compatibility is maintained. However all the docs/examples should use the new form.
Migration guide itself is not enough? Can be mark it as "deprecated" in the code somehow?
Since it is just one line in a case statement, I don't know why we'd break things.
All right, I'll fix it up.
keep the deprecated three-letter-code