By default, you can select an option from the auto-completion list by hitting Enter. But when the choosing dialogue pops up automatically, sometimes you just want to type a line break instead of choosing one from the list.
And when you hit Enter to type a line break, you get a completion selected instead.
So this could be very annoying.
There is an option in Sublime Text 2 that can change the default commitment keystroke from Enter to Tab.
I made a short youtube video tutorial for how to do this:
Note: I have aggregated all Sublime Text 2 tutorials together in the following post. Refer to that post to learn more about Sublime Text 2, and it will be updated with all future tutorials on Sublime Text 2.
The best text editor ever: Sublime Text 2 | JJPro