I have used vim for a while, in vim auto-complete, I use 'tab' 'down' to select the next candidate, 'shift+tab' 'up' to select the previous candidate, 'enter' to confirm that completion.
But in Sublime Text 3, I found 'tab' and 'enter' are both to confirm completion, only 'up' 'down' is to select the previous/next candidate.
How can I set the key like vim auto-complete mode ?