silverstripe-framework: Cookies cannot expire in less than 1 day.

Note: I initially send an email to the silverstripe-dev group here but I feel it may make more sense to go ahead and submit this as an issue since, to me, this is not correct functionality (but now depended-on).

There should be a finer degree of resolution for setting a cookie expiration in SilverStripe. Since the Cookie::set() method already has parameters that exactly match that of PHP’s native setcookie() function (link), I think it should also accept the same type of input (i.e. enhance this to accept unix timestamp instead). I could not find any immediate explanation at all in the documentation as to why this diverged from the unix timestamp and instead chose days. As such, I find this extremely confusing.

EDIT: Corrected to indicate this should be a unix timestamp, not just “number of days from now”. Another part of why this is a little confusing.