Thanks. I originally golfed it down while trying to use as few unique characters as possible. Fun 'vim' command du jour (use after you've selected some lines in Visual Line mode):

I may still write a variation that uses a different obfuscation method. (Anyone know of a golf competition that uses that metric [number of distinct chars.] as part of the score?) I think 30 was the lowest I managed while keeping it under 5 lines. (excluding the 'reëxpanding and evaluating' code)

The alphabetics came from 'sub', 'print', 'pop', 'if', 'my', and the 'x' operator.