icarus has found you

icarus.lua

do --welcome to the demo please paste me into lua.org/demo
  local g = {s="\32",k="\37\99",n="\n"} --space, uhhh???, newline
  local data = {
  {0x49434152,0x55532046,0x4F554E44,0x20594F55,0x21212100}, --the message
  {0x52554E20,0x5748494C,0x4520594F,0x55204341,0x4E212121}} --encoded in 4b segs
  local f,r,w = string.format,string.rep,io.write --wrap some funcs for smallness 
  local dc = function (data) -- de coder
    local d,f = {},math.floor --more smallness
    d[1] = f(data/16777216) --first byte
    d[2] = f((data-d[1]*16777216)/65536) --the second
    d[3] = f((data-d[2]*65536)/256) --the third
    d[4] = data-d[3]*256 --the end
    return d[1],d[2],d[3],d[4] --spit em out
  end
  local p = 0 --ooh! create p (important)
  p = function (data,i,j) --now define p
    if (j or 0) >= (i or 0) then return end -- make sure we arent stupid
    j = j or 0	-- again making sure
	local w = function (data,i,j) -- prove i can use two funcs with the same name (very carefully) :^)
	  w(r(g.s,j)) --note: not a recursive call (yet). this is actually the upvalued "w": io.write; calling repeat string (spacing)
	  for _,e in ipairs(data[i]) do w(f(g.k:rep(4),dc(e))) end ---pull the data table apart, pass it through the decoder, write the message
	  w(g.n)--newline
	end
	w(data,1,j)--this actually calls the new "w"  
	j=j+1
	p(data,i,j) --now there is no upvalue "p" func just p=0... except at runtime this will be a pointer to the function... and thats how recursive calling works :^)
	w(data,2,j-1)--write the rest
  end
  p(data,9)--i can do it, i will do it 9 times
end--my recursive call exercise

--[[OUTPUT:
ICARUS FOUND YOU!!!
 ICARUS FOUND YOU!!!
  ICARUS FOUND YOU!!!
   ICARUS FOUND YOU!!!
    ICARUS FOUND YOU!!!
     ICARUS FOUND YOU!!!
      ICARUS FOUND YOU!!!
       ICARUS FOUND YOU!!!
        ICARUS FOUND YOU!!!
        RUN WHILE YOU CAN!!!
       RUN WHILE YOU CAN!!!
      RUN WHILE YOU CAN!!!
     RUN WHILE YOU CAN!!!
    RUN WHILE YOU CAN!!!
   RUN WHILE YOU CAN!!!
  RUN WHILE YOU CAN!!!
 RUN WHILE YOU CAN!!!
RUN WHILE YOU CAN!!!
--]]