The original code above gives an unnecessary default warning under perl 5.10.0. Here is a variant of the code, which should work correctly both under 5.10.0 and earlier perls.
eval for"for\$^(2..27){\$==0;\$==(\$=*\$^+ord)%127,for/./gs;print+chr\
+$=}
#P*h!9= Nn[\c\9\0*.:\eUt\17%j{dY\31 -- ambrus"
Update: I forgot to link to my previous japh that this one has revisited Japh algebra.
Update 2010-08-30: Notice how my name in this one authenticates my authorship: it's not possible to change the name without understanding how the code works.
