on_rightclick = function(pos, node, player, itemstack, pointed_thing)
    local i = player:get_wielded_item()
    local num = i:get_count()
    num = num - 1
    player:get_wielded_item():set_count(num)
end,

------------------------------------------------------------------------------

on_rightclick = function(pos, node, player, itemstack, pointed_thing)
    player:get_wielded_item():take_item(1)
end,