local old_register_node = minetest.register_node
minetest.register_node = function(name, ourdef)
  local debugstring = "nil"
  if (ourdef ~= nil) then
    debugstring = #table.."#"..table.concat(ourdef,",")
  end
  print("RNC name="..name.." def="..debugstring)
  old_register_node(name, ourdef)
end