Lazy ccRestitched Nether Wart Farm v1

local i, found, slotItem, oneRemaining, present, entity = 1, false, nil, false, turtle.inspectDown();
while true do
    present, entity = turtle.inspectDown();
    while present do
        if entity.state.age == 3 then
            if not turtle.digDown() then term.clear(); assert(false, "No tool to dig with, dummy. To think I left the assembly lines for this... Halting."); end
            found, i = false, 1;
            while not found and i < 16 do
                slotItem = turtle.getItemDetail(i);
                if slotItem and slotItem.name == "minecraft:nether_wart" then
                    found = true;
                else
                    i = i + 1;
                end
            end
            if found then
                turtle.select(i);
                turtle.placeDown();
                oneRemaining = false;
                for i = 1, 16 do
                    turtle.select(i);
                    if oneRemaining then turtle.dropUp(); end
                    while not oneRemeaining and turtle.getItemCount() > 1 do
                        turtle.dropUp((turtle.getItemCount() - 1));
                        oneRemaining = true;
                    end
                end
            else
                assert(false, "No Nether Wart in inventory. Halting...");
            end
        else
            term.clear();
            print("Not mature yet.");
            --print(entity);
            print(textutils.serialize(entity));
        end
        present, entity = turtle.inspectDown();
    end
end