// Contains all of the variables and such to make tg prefs work
/datum/preferences
	/// The savefile relating to character preferences, PREFERENCE_CHARACTER
	var/list/character_data

	/// A list of keys that have been updated since the last save.
	var/list/recently_updated_keys = list()

	/// A cache of preference entries to values.
	/// Used to avoid expensive READ_FILE every time a preference is retrieved.
	var/value_cache = list()

	/// If set to TRUE, will update character_profiles on the next ui_data tick.
	var/tainted_character_profiles = FALSE

	var/current_window = PREFERENCE_TAB_GAME_PREFERENCES

	/// A list of instantiated middleware
	var/list/datum/preference_middleware/middleware = list()

/// Applies all PREFERENCE_PLAYER preferences
/datum/preferences/proc/apply_all_client_preferences()
	for(var/datum/preference/preference as anything in get_preferences_in_priority_order())
		if(preference.savefile_identifier != PREFERENCE_PLAYER)
			continue

		value_cache -= preference.type
		preference.apply_to_client(client, read_preference(preference.type))