dualfroz
9086ebcaab
Excluding the boundaries of a one or two unit long period pushes the included start past the included end. diff()->days is unsigned and the HOUR/MINUTE/SECOND branch applied abs() outright, so that backwards range was measured as a positive distance and the unconditional +1 inflated it further: a one day period reported 1, 2, 2 and 3 for EXCLUDE_NONE, START, END and ALL, while iterating the same objects yielded nothing. Return 0 up front when the included start is past the included end. This matches what the MONTH and YEAR precisions already returned through iterator_count(), and lets the now unreachable abs() go.