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I just played around with supertab plugin, but I didn't find anything particular. I feel basically the vim built-in 'complete' feature can do the same thing with <c-n> and <c-p>. Why supertab gained so much stars? I guess there must be something I wasn't ware of...

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Like all Vim plugins, Supertab has a description of what it does on its page and/or documentation. If you had taken the time to read either of those you would have answered your question. Hint, it does a lot more than <C-n>/<C-p>. – romainl Dec 26 '12 at 13:52
I'm deleting this superfluous question. – solotim Dec 27 '12 at 6:25

closed as not constructive by Heptite, 8088, Simon Sheehan, Dave Rook, romainl Dec 26 '12 at 8:22

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1 Answer

up vote 2 down vote accepted

Supertab indeed uses the same built-in insert-mode completion as <C-n> / <C-p> (or variations thereof like omnicompletion, depending on the configuration). It's just that many users find the overloaded behavior of the Tab key (complete vs. inserting a Tab character) useful, probably because this is a common function in many IDEs and other editors.

If you already have the <C-n> completion ingrained in your finger memory, there's little to be gained from Supertab.

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