When you type rupies nothing should happen (rupies are legal, rubi*s aren't). Now the important stuff: you're right, it doesn't work properly. I'll fix it in 2.1 (I will upload it in one hour)
So the problem was that I copied the code from morrolle, and changed variable names so its good for rubi*es/rub*, but I forgot that I copied a piece of code that resets how long are you holding down the "m" key.