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I did a rough performance measurement where I addressed a 
concern I had in a previous comment (function call in a list 
comprehension).  The time difference was so small I could not 
determine which was better.  Until I hear complaints about its 
speed I am not planning on looking into performance 
improvements.

As far as the "smarttab" option, I have not gotten any 
feedback.  I'm inclined to leave it as is because it allows the 
most flexibility.

I will not be monitoring this patch (or my email) from now until 
next Monday (August 9).