<b_jonas> slashlearn euclid//Euclid is a short geeky game in which the goal is to do Euclidean compass and straightedge constructions in as few steps as possible. It runs in the browser, found at "http://www.euclidthegame.com/". It was popular among #esoteric regulars in 2016-07.

#!/usr/bin/perl
$_ = (join " ", @ARGV) || `words`; s/^\s+|\s+$//g; print "Bless you, $_. "; if (/[aeiouyAEIOUY0134]/) { s/^[^aeiouyAEIOUY0134]*/Bl/; } else { s/^./B/; } print "$_.";