core :: Codec :: max_lookahead
	# How many lookaheads might be required to decode a single char ?
	fun max_lookahead: Int is abstract
					lib/core/codecs/codec_base.nit:51,2--52,35
				
	redef fun max_lookahead do return 4
					lib/core/codecs/utf8.nit:30,2--36
				
	redef fun max_lookahead do return 1
					lib/core/codecs/iso8859_1.nit:28,2--36