On a few keyboards (french mac keyboards for ex), the decimal separator key of the numpad is a comma instead of a dot. It is not detected as a numpad keypress on the current mac version. A fix is to add
'*', KeyPress::numberPadMultiply, '/', KeyPress::numberPadDivide, '.', KeyPress::numberPadDecimalPoint, ',', KeyPress::numberPadDecimalPoint, '=', KeyPress::numberPadEquals
to juce_mac_NSViewComponentPeer.mm