Up until now, fox feasted (2,4)
I believe the answer is:
to date
'up until now' is the definition.
(I've seen this in another clue)
'fox feasted' is the wordplay.
'fox' becomes 'tod' (historic term).
'feasted' becomes 'ate' (I've seen this in another clue).
'tod'+'ate'='TO DATE'
(Other definitions for to date that I've seen before include "Up to the present time (2.4)" , "Up until today" , "Up to this time - check calendar" , "up to the present day" , "Thus far" .)