I'll let you know later...
.... Are you fùcking kidding?
I blame the schools
When I say it, it means I might do that later but probably not .
until, not yet decided
It basically means that something has yet to occur, but is expected to occur.
So 'pending his return' means, 'in the period before he returns'.
Or 'patent pending' means 'we're working on the patent, it's not done yet'.
yet to occur
it means they are trying to like you