Get Char value of key, if any

Property definitions

	# Get Char value of key, if any
	fun to_c: nullable Char is abstract

lib/mnit/input.nit:98,2--99,36

	redef fun to_c do return native.to_s.chars.first

lib/gamnit/gamnit_linux.nit:127,2--49

	redef fun to_c
	do
		var i = native_to_c
		if i == 0 then return null
		return i.code_point
	end

lib/android/input_events.nit:223,2--228,4