title: How can I use the Tab key to indent in vim with SuperTab enabled?
body: <p>I've just enabled SuperTab in vim, and if I try to indent a blank line, SuperTab is attempting to insert strings. What I'd like, I guess, would be to have SuperTab offer completions <em>only</em> if there is non-whitespace to the left of the cursor.</p>
  
  <p>I don't want to have to use Ctrl-V or Ctrl-Q or anything.</p>