seth-shaw-asu
commented
2 weeks ago EDTF is an extension of ISO 8601 which, according to the Wikipedia article you referenced, does have a year 0. Or, as encoded in EDTF, a year 0000. Ergo, 0000 is valid.
The practical implication the article is that if we were to render it using BC/AD the EDTF value 0000 would be rendered "1 BC".
What steps does it take to reproduce the issue?
Supply
0000to an EDTF field. There should be a validation error according to https://en.wikipedia.org/wiki/Year_zero . The value is accepted, but nothing is rendered at the node display in the date field.When does this issue occur?
Which page does it occur on? Node edit / view
What happens? Lack of rendered variation, lack of validation error.
What did you expect to happen? A validation error should happen, 0000 is not a valid year.