628         $recordedRev = $this->lastRevision(); // false when there is no changelog
631         if ($fileRev === $recordedRev) {
632             $this->currentRevision = $recordedRev;
633             return $recordedRev === false ? false : $this->getRevisionInfo($recordedRev);
639             $revInfo = $this->synthesizeExternalDeletion($recordedRev);
641             $recordedRev === false ||
642             $this->getRevisionInfo($recordedRev, false)['type'] == DOKU_CHANGE_TYPE_DELETE
645             $revInfo = $this->synthesizeExternalCreate($filename, $fileRev, $recordedRev);
648             $revInfo = $this->synthesizeExternalEdit($filename, $fileRev, $recordedRev);
652             $this->currentRevision = $recordedRev;
653             return $this->getRevisionInfo($recordedRev);
667      * @param int $recordedRev date of the newest recorded changelog revision
671     protected function synthesizeExternalDeletion($recordedRev)  argument
675         if ($this->getRevisionInfo($recordedRev, false)['type'] == DOKU_CHANGE_TYPE_DELETE) {
681             'date' => max($recordedRev + 1, time() - 1),
688             'sizechange' => -$this->lastRevisionSize($recordedRev),
700      * @param int    $recordedRev  date of the newest recorded changelog revision
704     protected function synthesizeExternalEdit($filename, $fileRev, $recordedRev)  argument
711         if ($this->currentContentMatchesRevision($recordedRev)) {
712             @touch($filename, $recordedRev);
717         if ($fileRev > $recordedRev) {
724 …             . 'Last revision: ' . $recordedRev . ' ' . dformat($recordedRev, "%Y-%m-%d %H:%M:%S");
731             'date' => $timestamp ?: $recordedRev + 1,
738             'sizechange' => filesize($filename) - $this->lastRevisionSize($recordedRev),
751 …* @param int|false $recordedRev  date of the newest recorded changelog revision, or false when none
754     protected function synthesizeExternalCreate($filename, $fileRev, $recordedRev)  argument
761         $datedByFile = $recordedRev === false || $fileRev > $recordedRev;
767             'date' => $timestamp ?: $recordedRev + 1,
975      * @param int $recordedRev timestamp of the last recorded revision
978     protected function lastRevisionSize($recordedRev)  argument
980         return io_getSizeFile($this->getFilename($recordedRev));