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Date: Wed, 19 Dec 2012 07:22:36 -0800
From: Ray Andrews <rayandrews@eastlink.ca>
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Subject: forbidden variable in for loop.
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Gentlemen,

   for a in *; do echo $a; done

All fine. but:

   for i in *; do echo $i; done

Gives me a list of zeros. Followed by "zsh: bad floating point constant"

It works fine for any letter of the alphabet so far tested except 'i'.  
For the life of me I can't guess what it is that makes 'i' special. Any 
thoughts?