Removed in LÖVE 0.9.0
It has been renamed to Joystick:getButtonCount.
Returns the number of buttons on the joystick.
buttons = love.joystick.getNumButtons( joystick )
number joystick
number buttons
© 2006–2016 LÖVE Development Team
Licensed under the GNU Free Documentation License, Version 1.3.
https://love2d.org/wiki/love.joystick.getNumButtons