nVersions++
			}
		} else {
			// Find latest.
			var latestCount int
			for i, ver := range tops {
				if ver.header == latest.header {
					latestCount++
					continue
				}
				if i == 0 || ver.header.sortsBefore(latest.header) {
					switch {
					case i == 0 || latestCount == 0:
						latestCount = 1
					case !strict && ver.header.matchesNotStrict(latest.header):