How are these templates parsed? I mean what code goes through these and decides ...

abecedarius · on Feb 18, 2015

You can see a much fancier text-generator of this sort at http://eblong.com/zarf/mutagen/about.html

(I once ported it to Python and wrote a parser for a more-convenient syntax like the OP's, then never released it partly because I'd hate to see spammers using it.)

fmela · on Feb 18, 2015

It probably just chooses a word at random from each {} clause.