ynorsa

Thanks. It worked, but then I got an issue. The default date selected was one of the dates marked in the “special” parameter, and hence was supposed to not be available. And yet the form was able to be successfully validated, with the invalid date.
Here is my configuration:

[date_restrict date-678 min:current_date|+|1|d max:current_date|+|90|d special:2025-06-24 sync_min_number:0 "today+1day"]

Today being 2025-06-23, the default date is 2025-06-24. As this is a restricted date, again, I would expect the date to be 2025-06-25 instead, or to have at least a validation failure.