View difference between Paste ID: BfDqybaC and GdzZVZ9f

 local args = { ... }
 if #args ~= 1 then
   print( "Usage: program <distance>" )
   error()
 end
 
 function moveForward()
  repeat
    turtle.dig()
  until turtle.forward()
 end
 
 function moveUp()
  repeat
    turtle.digUp()
  until turtle.up()
 end
 
 function moveDown()
  repeat
    turtle.digDown()
  until turtle.down()
 end
 
 
 function iterate(k)
   for j=1, k do
     moveUp()
   end
   moveForward()
   for j=1, k do
     moveDown()
   end
   moveForward()
 end
 
 length = args[1]
 for i=1, length do
   turtle.select(1)
   turtle.refuel()
   iterate(5)
 end
 turtle.turnLeft()
-moveForward()
+iterate(1)
 turtle.turnLeft()
-iterate()
+
   turtle.select(1)
   turtle.refuel()
   iterate(5)
 end