The title of Yash Chopra’s swan-song has a retrospective bitter-sweetness to it : the veteran director did not live to see his film in the theatres. ‘Jab Tak Hai Jaan’ has released, in old YRF tradition, on Deepawali, but what the title manages to say pithily takes the fllm nearly three very long hours, and the pay-off isn’t as sweet as it should have been.