You can make your own gamerules

I've not checked in a while, I think it was 14w30c, but may've been 14w29b or whatever it was called but you can type things like /gamerule lol <true|false> and you could type /gamerule TAB and it would be in the list. The command also didn't fail. Just so no one gets confused, this is not the same as MC-2911, it says the last part is custom. (/gamerule <gamerule> anything) I am saying /gamerule <anything> <true|false> This is new, and MC-2911 has been in the game.