Minetest: Setting a clientside font

font.lua

local font = minetest.get_modpath(minetest.get_current_modname()) .. "/fonts/PressStart2P.ttf"
local previous_path = minetest.settings:get"font_path"
minetest.settings:set("font_path", font)
local previous_mono_path = minetest.settings:get"mono_font_path"
minetest.settings:set("mono_font_path", font)
minetest.register_on_shutdown(function()
    if previous_path or font == previous_path then
        -- TODO instead of our, persistently store last valid previous path elsewhere
        minetest.settings:remove"font_path"
    else
        minetest.settings:remove("font_path", previous_path)
    end
    if previous_mono_path or font == previous_mono_path then
        -- TODO instead of our, persistently store last valid previous path elsewhere
        minetest.settings:remove"mono_font_path"
    else
        minetest.settings:remove("mono_font_path", previous_mono_path)
    end
    minetest.settings:write()
end)