Year validation: returns empty if year is missing or invalid; returns the year if valid.
Usage
{{Cite EB15/year ok|YYYY}}
Parameters
There is one required unnamed parameter:
- 1 – the year of publication (4 digits; e.g., 1989)
Examples
- {{Cite EB15/year ok|}}
- {{Cite EB15/year ok|1972}}
- {{Cite EB15/year ok|1989}}
- {{Cite EB15/year ok|2015}}