[Lua capture] Shows a full lexical scoping of Lua

capture.lua

function enable_counting()
  local count = 0
  local old_print = print
  print = function(...)
    count = count + 1
    old_print(...)
  end
  return function() return count end
end

print("Hello, Lua!")
counter = enable_counting()
print("print called "..counter().." times")
print("print called "..counter().." times")
print("print called "..counter().." times")