packed delta その4

	@staticmethod
	def decompilePoints_(numPoints, data, offset, tableTag):
		"""(numPoints, data, offset, tableTag) --> ([point1, point2, ...], newOffset)"""
		assert tableTag in ('cvar', 'gvar')
		pos = offset
		numPointsInData = byteord(data[pos])
		pos += 1
		if (numPointsInData & POINTS_ARE_WORDS) != 0:
			numPointsInData = (numPointsInData & POINT_RUN_COUNT_MASK) << 8 | byteord(data[pos])
			pos += 1
		if numPointsInData == 0:
			return (range(numPoints), pos). <=====

https://github.com/fonttools/fonttools/blob/master/Lib/fontTools/ttLib/tables/TupleVariation.py#L254