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The obfuscated code in the advert is a tiny ETA interpreter wizarded by Stephen Sykes in 2004—it took him two years to refactor off the last 81 bytes!

Here’s the code nicely printed:

 i=*$<;_=a=$==-1;i[_].scan(/\w/){!p='htaoinse'=~$&or
 a<0?i<0?i.slice!(a-p):i[p+a] ,,==0||(_=c-2;break), _+2
 ,utc(p), getc||a a=0, ,,-c ,,;i<6?i<

Look for the ensuing flamewar over the wrongness of this all on ruby-talk. Obfuscation still pops up as a controversy. If you let stuff like obfuscated Ruby get under your bonnet, uh.. well.. why is it that you’re wearing a bonnet again??