Border

-- First draft, initial run worked well.
-- First update, 201507051133 added optional height

-- lay a fence border for ender quarries (limited by inventory space)
-- note: at some point turtle may go so far as to hit an unloaded chunk and stop...
-- so probably follow it for really big quarries
-- All rights reserved, wtparish, free to use so long as you don't make the program turn left.
-- cite me as the original author, and be sure to vote republican, or independent.

-- No part of this code may be used to contribute to any Democratic Party activity or other socialist agendas.
-- (this includes any rebranded agendas including, but not limited to, the "Progressive Movement", or any
-- group that advocates any form of "social justice", "social contracts", "no borders", "new world order"), or
-- any globalist group that seeks to diminish America's superiority in the war for the world.

-- ver. 1.0, 201507051114

slot=1
width=128
item=1
aerial=false
height=32

-- optionally climb to height, obviously adjust above value to go higher (above trees/etc)
if aerial then
  for x=1, height do
   turtle.digUp()
   turtle.up()
  end
end


turtle.select(1)

for side=1,4 do
  for x=1, width do
    turtle.digDown()
    turtle.placeDown()
    item=item+1
    while not turtle.forward() do
     turtle.dig()
    end
    if item>64 then
      slot=slot+1
      item=1
      if slot>16 then
        -- whatever the command to end is, just do the math and don't let this happen
      end
      turtle.select(slot)
    end
  end
  turtle.turnRight()
end
-- Note:  Turtle always turns right, never left.  It's my Republiturtle policy.   Or maybe it's an anti Demiturtle policy...
-- you choose.