Another way to look at it is that concatenating files should sum the line count. Concatenating two empty files produces an empty file, so 0 + 0 = 0. If “incompl

Another way to look at it is that concatenating files should sum the line count. Concatenating two empty files produces an empty file, so 0 + 0 = 0. If “incomplete lines” are not counted as lines, then the maths still works out. If they counted as lines, it would end up as 1 + 1 = 1.