diff --git a/src/applications/differential/conduit/DifferentialCloseConduitAPIMethod.php b/src/applications/differential/conduit/DifferentialCloseConduitAPIMethod.php
index 30f8a5e5b7..12ecda1262 100644
--- a/src/applications/differential/conduit/DifferentialCloseConduitAPIMethod.php
+++ b/src/applications/differential/conduit/DifferentialCloseConduitAPIMethod.php
@@ -1,71 +1,72 @@
 <?php
 
 final class DifferentialCloseConduitAPIMethod
   extends DifferentialConduitAPIMethod {
 
   public function getAPIMethodName() {
     return 'differential.close';
   }
 
   public function getMethodDescription() {
     return pht('Close a Differential revision.');
   }
 
   public function getMethodStatus() {
     return self::METHOD_STATUS_FROZEN;
   }
 
   public function getMethodStatusDescription() {
     return pht(
       'This method is frozen and will eventually be deprecated. New code '.
       'should use "differential.revision.edit" instead.');
   }
 
   protected function defineParamTypes() {
     return array(
       'revisionID' => 'required int',
     );
   }
 
   protected function defineReturnType() {
     return 'void';
   }
 
   protected function defineErrorTypes() {
     return array(
       'ERR_NOT_FOUND' => pht('Revision was not found.'),
     );
   }
 
   protected function execute(ConduitAPIRequest $request) {
     $viewer = $request->getUser();
     $id = $request->getValue('revisionID');
 
     $revision = id(new DifferentialRevisionQuery())
       ->withIDs(array($id))
       ->setViewer($viewer)
       ->needReviewers(true)
       ->executeOne();
     if (!$revision) {
       throw new ConduitException('ERR_NOT_FOUND');
     }
 
     $xactions = array();
     $xactions[] = id(new DifferentialTransaction())
-      ->setTransactionType(DifferentialTransaction::TYPE_ACTION)
-      ->setNewValue(DifferentialAction::ACTION_CLOSE);
+      ->setTransactionType(
+        DifferentialRevisionCloseTransaction::TRANSACTIONTYPE)
+      ->setNewValue(true);
 
     $content_source = $request->newContentSource();
 
     $editor = id(new DifferentialTransactionEditor())
       ->setActor($viewer)
       ->setContentSource($request->newContentSource())
       ->setContinueOnMissingFields(true)
       ->setContinueOnNoEffect(true);
 
     $editor->applyTransactions($revision, $xactions);
 
     return;
   }
 
 }
diff --git a/src/applications/differential/conduit/DifferentialCreateCommentConduitAPIMethod.php b/src/applications/differential/conduit/DifferentialCreateCommentConduitAPIMethod.php
index 943c3e7702..21b055a1e4 100644
--- a/src/applications/differential/conduit/DifferentialCreateCommentConduitAPIMethod.php
+++ b/src/applications/differential/conduit/DifferentialCreateCommentConduitAPIMethod.php
@@ -1,122 +1,124 @@
 <?php
 
 final class DifferentialCreateCommentConduitAPIMethod
   extends DifferentialConduitAPIMethod {
 
   public function getAPIMethodName() {
     return 'differential.createcomment';
   }
 
   public function getMethodDescription() {
     return pht('Add a comment to a Differential revision.');
   }
 
   public function getMethodStatus() {
     return self::METHOD_STATUS_FROZEN;
   }
 
   public function getMethodStatusDescription() {
     return pht(
       'This method is frozen and will eventually be deprecated. New code '.
       'should use "differential.revision.edit" instead.');
   }
 
   protected function defineParamTypes() {
     return array(
       'revision_id'    => 'required revisionid',
       'message'        => 'optional string',
       'action'         => 'optional string',
       'silent'         => 'optional bool',
       'attach_inlines' => 'optional bool',
     );
   }
 
   protected function defineReturnType() {
     return 'nonempty dict';
   }
 
   protected function defineErrorTypes() {
     return array(
       'ERR_BAD_REVISION' => pht('Bad revision ID.'),
     );
   }
 
   protected function execute(ConduitAPIRequest $request) {
     $viewer = $request->getUser();
 
     $revision = id(new DifferentialRevisionQuery())
       ->setViewer($viewer)
       ->withIDs(array($request->getValue('revision_id')))
       ->needReviewers(true)
       ->needReviewerAuthority(true)
       ->needActiveDiffs(true)
       ->executeOne();
     if (!$revision) {
       throw new ConduitException('ERR_BAD_REVISION');
     }
 
     $xactions = array();
 
     $modular_map = array(
       'accept' => DifferentialRevisionAcceptTransaction::TRANSACTIONTYPE,
       'reject' => DifferentialRevisionRejectTransaction::TRANSACTIONTYPE,
       'resign' => DifferentialRevisionResignTransaction::TRANSACTIONTYPE,
       'request_review' =>
         DifferentialRevisionRequestReviewTransaction::TRANSACTIONTYPE,
+      'rethink' => DifferentialRevisionPlanChangesTransaction::TRANSACTIONTYPE,
     );
 
     $action = $request->getValue('action');
     if (isset($modular_map[$action])) {
       $xactions[] = id(new DifferentialTransaction())
         ->setTransactionType($modular_map[$action])
         ->setNewValue(true);
     } else if ($action) {
       switch ($action) {
         case 'comment':
         case 'none':
           break;
         default:
-          $xactions[] = id(new DifferentialTransaction())
-            ->setTransactionType(DifferentialTransaction::TYPE_ACTION)
-            ->setNewValue($action);
+          throw new Exception(
+            pht(
+              'Unsupported action "%s".',
+              $action));
           break;
       }
     }
 
     $content = $request->getValue('message');
     if (strlen($content)) {
       $xactions[] = id(new DifferentialTransaction())
         ->setTransactionType(PhabricatorTransactions::TYPE_COMMENT)
         ->attachComment(
           id(new DifferentialTransactionComment())
             ->setContent($content));
     }
 
     if ($request->getValue('attach_inlines')) {
       $type_inline = DifferentialTransaction::TYPE_INLINE;
       $inlines = DifferentialTransactionQuery::loadUnsubmittedInlineComments(
         $viewer,
         $revision);
       foreach ($inlines as $inline) {
         $xactions[] = id(new DifferentialTransaction())
           ->setTransactionType($type_inline)
           ->attachComment($inline);
       }
     }
 
     $editor = id(new DifferentialTransactionEditor())
       ->setActor($viewer)
       ->setDisableEmail($request->getValue('silent'))
       ->setContentSource($request->newContentSource())
       ->setContinueOnNoEffect(true)
       ->setContinueOnMissingFields(true);
 
     $editor->applyTransactions($revision, $xactions);
 
     return array(
       'revisionid'  => $revision->getID(),
       'uri'         => PhabricatorEnv::getURI('/D'.$revision->getID()),
     );
   }
 
 }
diff --git a/src/applications/differential/editor/DifferentialTransactionEditor.php b/src/applications/differential/editor/DifferentialTransactionEditor.php
index 9390d1d2af..8089438ab9 100644
--- a/src/applications/differential/editor/DifferentialTransactionEditor.php
+++ b/src/applications/differential/editor/DifferentialTransactionEditor.php
@@ -1,1742 +1,1503 @@
 <?php
 
 final class DifferentialTransactionEditor
   extends PhabricatorApplicationTransactionEditor {
 
   private $changedPriorToCommitURI;
   private $isCloseByCommit;
   private $repositoryPHIDOverride = false;
   private $didExpandInlineState = false;
   private $hasReviewTransaction = false;
   private $affectedPaths;
 
   public function getEditorApplicationClass() {
     return 'PhabricatorDifferentialApplication';
   }
 
   public function getEditorObjectsDescription() {
     return pht('Differential Revisions');
   }
 
   public function getCreateObjectTitle($author, $object) {
     return pht('%s created this revision.', $author);
   }
 
   public function getCreateObjectTitleForFeed($author, $object) {
     return pht('%s created %s.', $author, $object);
   }
 
   public function getDiffUpdateTransaction(array $xactions) {
     $type_update = DifferentialTransaction::TYPE_UPDATE;
 
     foreach ($xactions as $xaction) {
       if ($xaction->getTransactionType() == $type_update) {
         return $xaction;
       }
     }
 
     return null;
   }
 
   public function setIsCloseByCommit($is_close_by_commit) {
     $this->isCloseByCommit = $is_close_by_commit;
     return $this;
   }
 
   public function getIsCloseByCommit() {
     return $this->isCloseByCommit;
   }
 
   public function setChangedPriorToCommitURI($uri) {
     $this->changedPriorToCommitURI = $uri;
     return $this;
   }
 
   public function getChangedPriorToCommitURI() {
     return $this->changedPriorToCommitURI;
   }
 
   public function setRepositoryPHIDOverride($phid_or_null) {
     $this->repositoryPHIDOverride = $phid_or_null;
     return $this;
   }
 
   public function getTransactionTypes() {
     $types = parent::getTransactionTypes();
 
     $types[] = PhabricatorTransactions::TYPE_COMMENT;
     $types[] = PhabricatorTransactions::TYPE_VIEW_POLICY;
     $types[] = PhabricatorTransactions::TYPE_EDIT_POLICY;
     $types[] = PhabricatorTransactions::TYPE_INLINESTATE;
 
-    $types[] = DifferentialTransaction::TYPE_ACTION;
     $types[] = DifferentialTransaction::TYPE_INLINE;
     $types[] = DifferentialTransaction::TYPE_UPDATE;
 
     return $types;
   }
 
   protected function getCustomTransactionOldValue(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {
-      case DifferentialTransaction::TYPE_ACTION:
-        return null;
       case DifferentialTransaction::TYPE_INLINE:
         return null;
       case DifferentialTransaction::TYPE_UPDATE:
         if ($this->getIsNewObject()) {
           return null;
         } else {
           return $object->getActiveDiff()->getPHID();
         }
     }
 
     return parent::getCustomTransactionOldValue($object, $xaction);
   }
 
   protected function getCustomTransactionNewValue(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {
-      case DifferentialTransaction::TYPE_ACTION:
       case DifferentialTransaction::TYPE_UPDATE:
         return $xaction->getNewValue();
       case DifferentialTransaction::TYPE_INLINE:
         return null;
     }
 
     return parent::getCustomTransactionNewValue($object, $xaction);
   }
 
   protected function transactionHasEffect(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     $actor_phid = $this->getActingAsPHID();
 
     switch ($xaction->getTransactionType()) {
       case DifferentialTransaction::TYPE_INLINE:
         return $xaction->hasComment();
-      case DifferentialTransaction::TYPE_ACTION:
-        $status_closed = ArcanistDifferentialRevisionStatus::CLOSED;
-        $status_abandoned = ArcanistDifferentialRevisionStatus::ABANDONED;
-        $status_review = ArcanistDifferentialRevisionStatus::NEEDS_REVIEW;
-        $status_revision = ArcanistDifferentialRevisionStatus::NEEDS_REVISION;
-        $status_plan = ArcanistDifferentialRevisionStatus::CHANGES_PLANNED;
-
-        $action_type = $xaction->getNewValue();
-        switch ($action_type) {
-          case DifferentialAction::ACTION_CLOSE:
-            return ($object->getStatus() != $status_closed);
-          case DifferentialAction::ACTION_ABANDON:
-            return ($object->getStatus() != $status_abandoned);
-          case DifferentialAction::ACTION_RECLAIM:
-            return ($object->getStatus() == $status_abandoned);
-          case DifferentialAction::ACTION_REOPEN:
-            return ($object->getStatus() == $status_closed);
-          case DifferentialAction::ACTION_RETHINK:
-            return ($object->getStatus() != $status_plan);
-          case DifferentialAction::ACTION_CLAIM:
-            return ($actor_phid != $object->getAuthorPHID());
-        }
     }
 
     return parent::transactionHasEffect($object, $xaction);
   }
 
   protected function applyCustomInternalTransaction(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     $status_review = ArcanistDifferentialRevisionStatus::NEEDS_REVIEW;
     $status_revision = ArcanistDifferentialRevisionStatus::NEEDS_REVISION;
     $status_plan = ArcanistDifferentialRevisionStatus::CHANGES_PLANNED;
     $status_abandoned = ArcanistDifferentialRevisionStatus::ABANDONED;
     $status_accepted = ArcanistDifferentialRevisionStatus::ACCEPTED;
 
     switch ($xaction->getTransactionType()) {
       case DifferentialTransaction::TYPE_INLINE:
         return;
       case DifferentialTransaction::TYPE_UPDATE:
         if (!$this->getIsCloseByCommit()) {
           switch ($object->getStatus()) {
             case $status_revision:
             case $status_plan:
             case $status_abandoned:
               $object->setStatus($status_review);
               break;
           }
         }
 
         $diff = $this->requireDiff($xaction->getNewValue());
 
         $object->setLineCount($diff->getLineCount());
         if ($this->repositoryPHIDOverride !== false) {
           $object->setRepositoryPHID($this->repositoryPHIDOverride);
         } else {
           $object->setRepositoryPHID($diff->getRepositoryPHID());
         }
         $object->attachActiveDiff($diff);
 
         // TODO: Update the `diffPHID` once we add that.
         return;
-      case DifferentialTransaction::TYPE_ACTION:
-        switch ($xaction->getNewValue()) {
-          case DifferentialAction::ACTION_ABANDON:
-            $object->setStatus(ArcanistDifferentialRevisionStatus::ABANDONED);
-            return;
-          case DifferentialAction::ACTION_RETHINK:
-            $object->setStatus($status_plan);
-            return;
-          case DifferentialAction::ACTION_RECLAIM:
-            $object->setStatus($status_review);
-            return;
-          case DifferentialAction::ACTION_REOPEN:
-            $object->setStatus($status_review);
-            return;
-          case DifferentialAction::ACTION_CLOSE:
-            $old_status = $object->getStatus();
-            $object->setStatus(ArcanistDifferentialRevisionStatus::CLOSED);
-            $was_accepted = ($old_status == $status_accepted);
-            $object->setProperty(
-              DifferentialRevision::PROPERTY_CLOSED_FROM_ACCEPTED,
-              $was_accepted);
-            return;
-          case DifferentialAction::ACTION_CLAIM:
-            $object->setAuthorPHID($this->getActingAsPHID());
-            return;
-          default:
-            throw new Exception(
-              pht(
-                'Differential action "%s" is not a valid action!',
-                $xaction->getNewValue()));
-        }
-        break;
     }
 
     return parent::applyCustomInternalTransaction($object, $xaction);
   }
 
   protected function expandTransactions(
     PhabricatorLiskDAO $object,
     array $xactions) {
 
     foreach ($xactions as $xaction) {
       switch ($xaction->getTransactionType()) {
         case PhabricatorTransactions::TYPE_INLINESTATE:
           // If we have an "Inline State" transaction already, the caller
           // built it for us so we don't need to expand it again.
           $this->didExpandInlineState = true;
           break;
         case DifferentialRevisionAcceptTransaction::TRANSACTIONTYPE:
         case DifferentialRevisionRejectTransaction::TRANSACTIONTYPE:
         case DifferentialRevisionResignTransaction::TRANSACTIONTYPE:
           // If we have a review transaction, we'll skip marking the user
           // as "Commented" later. This should get cleaner after T10967.
           $this->hasReviewTransaction = true;
           break;
       }
     }
 
     return parent::expandTransactions($object, $xactions);
   }
 
   protected function expandTransaction(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     $results = parent::expandTransaction($object, $xaction);
 
     $actor = $this->getActor();
     $actor_phid = $this->getActingAsPHID();
     $type_edge = PhabricatorTransactions::TYPE_EDGE;
 
     $status_plan = ArcanistDifferentialRevisionStatus::CHANGES_PLANNED;
 
     $edge_ref_task = DifferentialRevisionHasTaskEdgeType::EDGECONST;
 
     $is_sticky_accept = PhabricatorEnv::getEnvConfig(
       'differential.sticky-accept');
 
     $downgrade_rejects = false;
     $downgrade_accepts = false;
     if ($this->getIsCloseByCommit()) {
       // Never downgrade reviewers when we're closing a revision after a
       // commit.
     } else {
       switch ($xaction->getTransactionType()) {
         case DifferentialTransaction::TYPE_UPDATE:
           $downgrade_rejects = true;
           if (!$is_sticky_accept) {
             // If "sticky accept" is disabled, also downgrade the accepts.
             $downgrade_accepts = true;
           }
           break;
         case DifferentialRevisionRequestReviewTransaction::TRANSACTIONTYPE:
           $downgrade_rejects = true;
           if ((!$is_sticky_accept) ||
               ($object->getStatus() != $status_plan)) {
             // If the old state isn't "changes planned", downgrade the accepts.
             // This exception allows an accepted revision to go through
             // "Plan Changes" -> "Request Review" and return to "accepted" if
             // the author didn't update the revision, essentially undoing the
             // "Plan Changes".
             $downgrade_accepts = true;
           }
           break;
       }
     }
 
     $new_accept = DifferentialReviewerStatus::STATUS_ACCEPTED;
     $new_reject = DifferentialReviewerStatus::STATUS_REJECTED;
     $old_accept = DifferentialReviewerStatus::STATUS_ACCEPTED_OLDER;
     $old_reject = DifferentialReviewerStatus::STATUS_REJECTED_OLDER;
 
     $downgrade = array();
     if ($downgrade_accepts) {
       $downgrade[] = DifferentialReviewerStatus::STATUS_ACCEPTED;
     }
 
     if ($downgrade_rejects) {
       $downgrade[] = DifferentialReviewerStatus::STATUS_REJECTED;
     }
 
     if ($downgrade) {
       $void_type = DifferentialRevisionVoidTransaction::TRANSACTIONTYPE;
 
       $results[] = id(new DifferentialTransaction())
         ->setTransactionType($void_type)
         ->setIgnoreOnNoEffect(true)
         ->setNewValue($downgrade);
     }
 
     $is_commandeer = false;
     switch ($xaction->getTransactionType()) {
       case DifferentialTransaction::TYPE_UPDATE:
         if ($this->getIsCloseByCommit()) {
           // Don't bother with any of this if this update is a side effect of
           // commit detection.
           break;
         }
 
         // When a revision is updated and the diff comes from a branch named
         // "T123" or similar, automatically associate the commit with the
         // task that the branch names.
 
         $maniphest = 'PhabricatorManiphestApplication';
         if (PhabricatorApplication::isClassInstalled($maniphest)) {
           $diff = $this->requireDiff($xaction->getNewValue());
           $branch = $diff->getBranch();
 
           // No "$", to allow for branches like T123_demo.
           $match = null;
           if (preg_match('/^T(\d+)/i', $branch, $match)) {
             $task_id = $match[1];
             $tasks = id(new ManiphestTaskQuery())
               ->setViewer($this->getActor())
               ->withIDs(array($task_id))
               ->execute();
             if ($tasks) {
               $task = head($tasks);
               $task_phid = $task->getPHID();
 
               $results[] = id(new DifferentialTransaction())
                 ->setTransactionType($type_edge)
                 ->setMetadataValue('edge:type', $edge_ref_task)
                 ->setIgnoreOnNoEffect(true)
                 ->setNewValue(array('+' => array($task_phid => $task_phid)));
             }
           }
         }
         break;
 
       case DifferentialRevisionCommandeerTransaction::TRANSACTIONTYPE:
         $is_commandeer = true;
         break;
-
-      case DifferentialTransaction::TYPE_ACTION:
-        $action_type = $xaction->getNewValue();
-
-        switch ($action_type) {
-          case DifferentialAction::ACTION_CLAIM:
-            $is_commandeer = true;
-            break;
-        }
-      break;
     }
 
     if ($is_commandeer) {
       $results[] = $this->newCommandeerReviewerTransaction($object);
     }
 
     if (!$this->didExpandInlineState) {
       switch ($xaction->getTransactionType()) {
         case PhabricatorTransactions::TYPE_COMMENT:
-        case DifferentialTransaction::TYPE_ACTION:
         case DifferentialTransaction::TYPE_UPDATE:
         case DifferentialTransaction::TYPE_INLINE:
           $this->didExpandInlineState = true;
 
           $actor_phid = $this->getActingAsPHID();
           $actor_is_author = ($object->getAuthorPHID() == $actor_phid);
           if (!$actor_is_author) {
             break;
           }
 
           $state_map = PhabricatorTransactions::getInlineStateMap();
 
           $inlines = id(new DifferentialDiffInlineCommentQuery())
             ->setViewer($this->getActor())
             ->withRevisionPHIDs(array($object->getPHID()))
             ->withFixedStates(array_keys($state_map))
             ->execute();
 
           if (!$inlines) {
             break;
           }
 
           $old_value = mpull($inlines, 'getFixedState', 'getPHID');
           $new_value = array();
           foreach ($old_value as $key => $state) {
             $new_value[$key] = $state_map[$state];
           }
 
           $results[] = id(new DifferentialTransaction())
             ->setTransactionType(PhabricatorTransactions::TYPE_INLINESTATE)
             ->setIgnoreOnNoEffect(true)
             ->setOldValue($old_value)
             ->setNewValue($new_value);
           break;
       }
     }
 
     return $results;
   }
 
   protected function applyCustomExternalTransaction(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {
-      case DifferentialTransaction::TYPE_ACTION:
-        return;
       case DifferentialTransaction::TYPE_INLINE:
         $reply = $xaction->getComment()->getReplyToComment();
         if ($reply && !$reply->getHasReplies()) {
           $reply->setHasReplies(1)->save();
         }
         return;
       case DifferentialTransaction::TYPE_UPDATE:
         // Now that we're inside the transaction, do a final check.
         $diff = $this->requireDiff($xaction->getNewValue());
 
         // TODO: It would be slightly cleaner to just revalidate this
         // transaction somehow using the same validation code, but that's
         // not easy to do at the moment.
 
         $revision_id = $diff->getRevisionID();
         if ($revision_id && ($revision_id != $object->getID())) {
           throw new Exception(
             pht(
               'Diff is already attached to another revision. You lost '.
               'a race?'));
         }
 
         // TODO: This can race with diff updates, particularly those from
         // Harbormaster. See discussion in T8650.
         $diff->setRevisionID($object->getID());
         $diff->save();
 
         // Update Harbormaster to set the containerPHID correctly for any
         // existing buildables. We may otherwise have buildables stuck with
         // the old (`null`) container.
 
         // TODO: This is a bit iffy, maybe we can find a cleaner approach?
         // In particular, this could (rarely) be overwritten by Harbormaster
         // workers.
         $table = new HarbormasterBuildable();
         $conn_w = $table->establishConnection('w');
         queryfx(
           $conn_w,
           'UPDATE %T SET containerPHID = %s WHERE buildablePHID = %s',
           $table->getTableName(),
           $object->getPHID(),
           $diff->getPHID());
 
         return;
     }
 
     return parent::applyCustomExternalTransaction($object, $xaction);
   }
 
   protected function applyBuiltinExternalTransaction(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {
       case PhabricatorTransactions::TYPE_INLINESTATE:
         $table = new DifferentialTransactionComment();
         $conn_w = $table->establishConnection('w');
         foreach ($xaction->getNewValue() as $phid => $state) {
           queryfx(
             $conn_w,
             'UPDATE %T SET fixedState = %s WHERE phid = %s',
             $table->getTableName(),
             $state,
             $phid);
         }
         break;
     }
 
     return parent::applyBuiltinExternalTransaction($object, $xaction);
   }
 
   protected function applyFinalEffects(
     PhabricatorLiskDAO $object,
     array $xactions) {
 
     // Load the most up-to-date version of the revision and its reviewers,
     // so we don't need to try to deduce the state of reviewers by examining
     // all the changes made by the transactions. Then, update the reviewers
     // on the object to make sure we're acting on the current reviewer set
     // (and, for example, sending mail to the right people).
 
     $new_revision = id(new DifferentialRevisionQuery())
       ->setViewer($this->getActor())
       ->needReviewers(true)
       ->needActiveDiffs(true)
       ->withIDs(array($object->getID()))
       ->executeOne();
     if (!$new_revision) {
       throw new Exception(
         pht('Failed to load revision from transaction finalization.'));
     }
 
     $object->attachReviewers($new_revision->getReviewers());
     $object->attachActiveDiff($new_revision->getActiveDiff());
     $object->attachRepository($new_revision->getRepository());
 
     foreach ($xactions as $xaction) {
       switch ($xaction->getTransactionType()) {
         case DifferentialTransaction::TYPE_UPDATE:
           $diff = $this->requireDiff($xaction->getNewValue(), true);
 
           // Update these denormalized index tables when we attach a new
           // diff to a revision.
 
           $this->updateRevisionHashTable($object, $diff);
           $this->updateAffectedPathTable($object, $diff);
           break;
       }
     }
 
     $status_accepted = ArcanistDifferentialRevisionStatus::ACCEPTED;
     $status_revision = ArcanistDifferentialRevisionStatus::NEEDS_REVISION;
     $status_review = ArcanistDifferentialRevisionStatus::NEEDS_REVIEW;
 
     $is_sticky_accept = PhabricatorEnv::getEnvConfig(
       'differential.sticky-accept');
 
     $old_status = $object->getStatus();
     $active_diff = $object->getActiveDiff();
     switch ($old_status) {
       case $status_accepted:
       case $status_revision:
       case $status_review:
         // Try to move a revision to "accepted". We look for:
         //
         //   - at least one accepting reviewer who is a user; and
         //   - no rejects; and
         //   - no rejects of older diffs; and
         //   - no blocking reviewers.
 
         $has_accepting_user = false;
         $has_rejecting_reviewer = false;
         $has_rejecting_older_reviewer = false;
         $has_blocking_reviewer = false;
         foreach ($object->getReviewers() as $reviewer) {
           $reviewer_status = $reviewer->getReviewerStatus();
           switch ($reviewer_status) {
             case DifferentialReviewerStatus::STATUS_REJECTED:
               $active_phid = $active_diff->getPHID();
               if ($reviewer->isRejected($active_phid)) {
                 $has_rejecting_reviewer = true;
               } else {
                 $has_rejecting_older_reviewer = true;
               }
               break;
             case DifferentialReviewerStatus::STATUS_REJECTED_OLDER:
               $has_rejecting_older_reviewer = true;
               break;
             case DifferentialReviewerStatus::STATUS_BLOCKING:
               $has_blocking_reviewer = true;
               break;
             case DifferentialReviewerStatus::STATUS_ACCEPTED:
               if ($reviewer->isUser()) {
                 $active_phid = $active_diff->getPHID();
                 if ($reviewer->isAccepted($active_phid)) {
                   $has_accepting_user = true;
                 }
               }
               break;
           }
         }
 
         $new_status = null;
         if ($has_accepting_user &&
             !$has_rejecting_reviewer &&
             !$has_rejecting_older_reviewer &&
             !$has_blocking_reviewer) {
           $new_status = $status_accepted;
         } else if ($has_rejecting_reviewer) {
           // This isn't accepted, and there's at least one rejecting reviewer,
           // so the revision needs changes. This usually happens after a
           // "reject".
           $new_status = $status_revision;
         } else if ($old_status == $status_accepted) {
           // This revision was accepted, but it no longer satisfies the
           // conditions for acceptance. This usually happens after an accepting
           // reviewer resigns or is removed.
           $new_status = $status_review;
         }
 
         if ($new_status !== null && ($new_status != $old_status)) {
           $xaction = id(new DifferentialTransaction())
             ->setTransactionType(
                 DifferentialRevisionStatusTransaction::TRANSACTIONTYPE)
             ->setOldValue($old_status)
             ->setNewValue($new_status);
 
           $xaction = $this->populateTransaction($object, $xaction)->save();
 
           $xactions[] = $xaction;
 
           $object->setStatus($new_status)->save();
         }
         break;
       default:
         // Revisions can't transition out of other statuses (like closed or
         // abandoned) as a side effect of reviewer status changes.
         break;
     }
 
 
     $this->markReviewerComments($object, $xactions);
 
     return $xactions;
   }
 
   protected function validateTransaction(
     PhabricatorLiskDAO $object,
     $type,
     array $xactions) {
 
     $errors = parent::validateTransaction($object, $type, $xactions);
 
     $config_self_accept_key = 'differential.allow-self-accept';
     $allow_self_accept = PhabricatorEnv::getEnvConfig($config_self_accept_key);
 
     foreach ($xactions as $xaction) {
       switch ($type) {
         case DifferentialTransaction::TYPE_UPDATE:
           $diff = $this->loadDiff($xaction->getNewValue());
           if (!$diff) {
             $errors[] = new PhabricatorApplicationTransactionValidationError(
               $type,
               pht('Invalid'),
               pht('The specified diff does not exist.'),
               $xaction);
           } else if (($diff->getRevisionID()) &&
             ($diff->getRevisionID() != $object->getID())) {
             $errors[] = new PhabricatorApplicationTransactionValidationError(
               $type,
               pht('Invalid'),
               pht(
                 'You can not update this revision to the specified diff, '.
                 'because the diff is already attached to another revision.'),
               $xaction);
           }
           break;
-        case DifferentialTransaction::TYPE_ACTION:
-          $error = $this->validateDifferentialAction(
-            $object,
-            $type,
-            $xaction,
-            $xaction->getNewValue());
-          if ($error) {
-            $errors[] = new PhabricatorApplicationTransactionValidationError(
-              $type,
-              pht('Invalid'),
-              $error,
-              $xaction);
-          }
-          break;
       }
     }
 
     return $errors;
   }
 
-  private function validateDifferentialAction(
-    DifferentialRevision $revision,
-    $type,
-    DifferentialTransaction $xaction,
-    $action) {
-
-    $author_phid = $revision->getAuthorPHID();
-    $actor_phid = $this->getActingAsPHID();
-    $actor_is_author = ($author_phid == $actor_phid);
-
-    $config_abandon_key = 'differential.always-allow-abandon';
-    $always_allow_abandon = PhabricatorEnv::getEnvConfig($config_abandon_key);
-
-    $config_close_key = 'differential.always-allow-close';
-    $always_allow_close = PhabricatorEnv::getEnvConfig($config_close_key);
-
-    $config_reopen_key = 'differential.allow-reopen';
-    $allow_reopen = PhabricatorEnv::getEnvConfig($config_reopen_key);
-
-    $config_self_accept_key = 'differential.allow-self-accept';
-    $allow_self_accept = PhabricatorEnv::getEnvConfig($config_self_accept_key);
-
-    $revision_status = $revision->getStatus();
-
-    $status_accepted = ArcanistDifferentialRevisionStatus::ACCEPTED;
-    $status_abandoned = ArcanistDifferentialRevisionStatus::ABANDONED;
-    $status_closed = ArcanistDifferentialRevisionStatus::CLOSED;
-
-    switch ($action) {
-      case DifferentialAction::ACTION_CLAIM:
-        // You can claim a revision if you're not the owner. If you are, this
-        // is a no-op rather than invalid.
-
-        if ($revision_status == $status_closed) {
-          return pht(
-            'You can not commandeer this revision because it has already been '.
-            'closed.');
-        }
-        break;
-
-      case DifferentialAction::ACTION_ABANDON:
-        if (!$actor_is_author && !$always_allow_abandon) {
-          return pht(
-            'You can not abandon this revision because you do not own it. '.
-            'You can only abandon revisions you own.');
-        }
-
-        if ($revision_status == $status_closed) {
-          return pht(
-            'You can not abandon this revision because it has already been '.
-            'closed.');
-        }
-
-        // NOTE: Abandons of already-abandoned revisions are treated as no-op
-        // instead of invalid. Other abandons are OK.
-
-        break;
-
-      case DifferentialAction::ACTION_RECLAIM:
-        if (!$actor_is_author) {
-          return pht(
-            'You can not reclaim this revision because you do not own '.
-            'it. You can only reclaim revisions you own.');
-        }
-
-        if ($revision_status == $status_closed) {
-          return pht(
-            'You can not reclaim this revision because it has already been '.
-            'closed.');
-        }
-
-        // NOTE: Reclaims of other non-abandoned revisions are treated as no-op
-        // instead of invalid.
-
-        break;
-
-      case DifferentialAction::ACTION_REOPEN:
-        if (!$allow_reopen) {
-          return pht(
-            'The reopen action is not enabled on this Phabricator install. '.
-            'Adjust your configuration to enable it.');
-        }
-
-        // NOTE: If the revision is not closed, this is caught as a no-op
-        // instead of an invalid transaction.
-
-        break;
-
-      case DifferentialAction::ACTION_RETHINK:
-        if (!$actor_is_author) {
-          return pht(
-            'You can not plan changes to this revision because you do not '.
-            'own it. To plan changes to a revision, you must be its owner.');
-        }
-
-        switch ($revision_status) {
-          case ArcanistDifferentialRevisionStatus::ACCEPTED:
-          case ArcanistDifferentialRevisionStatus::NEEDS_REVISION:
-          case ArcanistDifferentialRevisionStatus::NEEDS_REVIEW:
-            // These are OK.
-            break;
-          case ArcanistDifferentialRevisionStatus::CHANGES_PLANNED:
-            // Let this through, it's a no-op.
-            break;
-          case ArcanistDifferentialRevisionStatus::ABANDONED:
-            return pht(
-              'You can not plan changes to this revision because it has '.
-              'been abandoned.');
-          case ArcanistDifferentialRevisionStatus::CLOSED:
-            return pht(
-              'You can not plan changes to this revision because it has '.
-              'already been closed.');
-          default:
-            throw new Exception(
-              pht(
-                'Encountered unexpected revision status ("%s") when '.
-                'validating "%s" action.',
-                $revision_status,
-                $action));
-        }
-        break;
-
-      case DifferentialAction::ACTION_CLOSE:
-        // We force revisions closed when we discover a corresponding commit.
-        // In this case, revisions are allowed to transition to closed from
-        // any state. This is an automated action taken by the daemons.
-
-        if (!$this->getIsCloseByCommit()) {
-          if (!$actor_is_author && !$always_allow_close) {
-            return pht(
-              'You can not close this revision because you do not own it. To '.
-              'close a revision, you must be its owner.');
-          }
-
-          if ($revision_status != $status_accepted) {
-            return pht(
-              'You can not close this revision because it has not been '.
-              'accepted. You can only close accepted revisions.');
-          }
-        }
-        break;
-    }
-
-    return null;
-  }
-
   protected function sortTransactions(array $xactions) {
     $xactions = parent::sortTransactions($xactions);
 
     $head = array();
     $tail = array();
 
     foreach ($xactions as $xaction) {
       $type = $xaction->getTransactionType();
       if ($type == DifferentialTransaction::TYPE_INLINE) {
         $tail[] = $xaction;
       } else {
         $head[] = $xaction;
       }
     }
 
     return array_values(array_merge($head, $tail));
   }
 
   protected function requireCapabilities(
     PhabricatorLiskDAO $object,
     PhabricatorApplicationTransaction $xaction) {
 
     switch ($xaction->getTransactionType()) {}
 
     return parent::requireCapabilities($object, $xaction);
   }
 
   protected function shouldPublishFeedStory(
     PhabricatorLiskDAO $object,
     array $xactions) {
     return true;
   }
 
   protected function shouldSendMail(
     PhabricatorLiskDAO $object,
     array $xactions) {
     return true;
   }
 
   protected function getMailTo(PhabricatorLiskDAO $object) {
     $phids = array();
     $phids[] = $object->getAuthorPHID();
     foreach ($object->getReviewers() as $reviewer) {
       $phids[] = $reviewer->getReviewerPHID();
     }
     return $phids;
   }
 
   protected function getMailAction(
     PhabricatorLiskDAO $object,
     array $xactions) {
     $action = parent::getMailAction($object, $xactions);
 
     $strongest = $this->getStrongestAction($object, $xactions);
     switch ($strongest->getTransactionType()) {
       case DifferentialTransaction::TYPE_UPDATE:
         $count = new PhutilNumber($object->getLineCount());
         $action = pht('%s, %s line(s)', $action, $count);
         break;
     }
 
     return $action;
   }
 
   protected function getMailSubjectPrefix() {
     return PhabricatorEnv::getEnvConfig('metamta.differential.subject-prefix');
   }
 
   protected function getMailThreadID(PhabricatorLiskDAO $object) {
     // This is nonstandard, but retains threading with older messages.
     $phid = $object->getPHID();
     return "differential-rev-{$phid}-req";
   }
 
   protected function buildReplyHandler(PhabricatorLiskDAO $object) {
     return id(new DifferentialReplyHandler())
       ->setMailReceiver($object);
   }
 
   protected function buildMailTemplate(PhabricatorLiskDAO $object) {
     $id = $object->getID();
     $title = $object->getTitle();
 
     $original_title = $object->getOriginalTitle();
 
     $subject = "D{$id}: {$title}";
     $thread_topic = "D{$id}: {$original_title}";
 
     return id(new PhabricatorMetaMTAMail())
       ->setSubject($subject)
       ->addHeader('Thread-Topic', $thread_topic);
   }
 
   protected function buildMailBody(
     PhabricatorLiskDAO $object,
     array $xactions) {
 
     $body = new PhabricatorMetaMTAMailBody();
     $body->setViewer($this->requireActor());
 
     $revision_uri = PhabricatorEnv::getProductionURI('/D'.$object->getID());
 
     $this->addHeadersAndCommentsToMailBody(
       $body,
       $xactions,
       pht('View Revision'),
       $revision_uri);
 
     $type_inline = DifferentialTransaction::TYPE_INLINE;
 
     $inlines = array();
     foreach ($xactions as $xaction) {
       if ($xaction->getTransactionType() == $type_inline) {
         $inlines[] = $xaction;
       }
     }
 
     if ($inlines) {
       $this->appendInlineCommentsForMail($object, $inlines, $body);
     }
 
     $changed_uri = $this->getChangedPriorToCommitURI();
     if ($changed_uri) {
       $body->addLinkSection(
         pht('CHANGED PRIOR TO COMMIT'),
         $changed_uri);
     }
 
     $this->addCustomFieldsToMailBody($body, $object, $xactions);
 
     $body->addLinkSection(
       pht('REVISION DETAIL'),
       $revision_uri);
 
     $update_xaction = null;
     foreach ($xactions as $xaction) {
       switch ($xaction->getTransactionType()) {
         case DifferentialTransaction::TYPE_UPDATE:
           $update_xaction = $xaction;
           break;
       }
     }
 
     if ($update_xaction) {
       $diff = $this->requireDiff($update_xaction->getNewValue(), true);
 
       $body->addTextSection(
         pht('AFFECTED FILES'),
         $this->renderAffectedFilesForMail($diff));
 
       $config_key_inline = 'metamta.differential.inline-patches';
       $config_inline = PhabricatorEnv::getEnvConfig($config_key_inline);
 
       $config_key_attach = 'metamta.differential.attach-patches';
       $config_attach = PhabricatorEnv::getEnvConfig($config_key_attach);
 
       if ($config_inline || $config_attach) {
         $body_limit = PhabricatorEnv::getEnvConfig('metamta.email-body-limit');
 
         $patch = $this->buildPatchForMail($diff);
         if ($config_inline) {
           $lines = substr_count($patch, "\n");
           $bytes = strlen($patch);
 
           // Limit the patch size to the smaller of 256 bytes per line or
           // the mail body limit. This prevents degenerate behavior for patches
           // with one line that is 10MB long. See T11748.
           $byte_limits = array();
           $byte_limits[] = (256 * $config_inline);
           $byte_limits[] = $body_limit;
           $byte_limit = min($byte_limits);
 
           $lines_ok = ($lines <= $config_inline);
           $bytes_ok = ($bytes <= $byte_limit);
 
           if ($lines_ok && $bytes_ok) {
             $this->appendChangeDetailsForMail($object, $diff, $patch, $body);
           } else {
             // TODO: Provide a helpful message about the patch being too
             // large or lengthy here.
           }
         }
 
         if ($config_attach) {
           $name = pht('D%s.%s.patch', $object->getID(), $diff->getID());
           $mime_type = 'text/x-patch; charset=utf-8';
           $body->addAttachment(
             new PhabricatorMetaMTAAttachment($patch, $name, $mime_type));
         }
       }
     }
 
     return $body;
   }
 
   public function getMailTagsMap() {
     return array(
       DifferentialTransaction::MAILTAG_REVIEW_REQUEST =>
         pht('A revision is created.'),
       DifferentialTransaction::MAILTAG_UPDATED =>
         pht('A revision is updated.'),
       DifferentialTransaction::MAILTAG_COMMENT =>
         pht('Someone comments on a revision.'),
       DifferentialTransaction::MAILTAG_CLOSED =>
         pht('A revision is closed.'),
       DifferentialTransaction::MAILTAG_REVIEWERS =>
         pht("A revision's reviewers change."),
       DifferentialTransaction::MAILTAG_CC =>
         pht("A revision's CCs change."),
       DifferentialTransaction::MAILTAG_OTHER =>
         pht('Other revision activity not listed above occurs.'),
     );
   }
 
   protected function supportsSearch() {
     return true;
   }
 
   protected function expandCustomRemarkupBlockTransactions(
     PhabricatorLiskDAO $object,
     array $xactions,
     array $changes,
     PhutilMarkupEngine $engine) {
 
     // For "Fixes ..." and "Depends on ...", we're only going to look at
     // content blocks which are part of the revision itself (like "Summary"
     // and  "Test Plan"), not comments.
     $content_parts = array();
     foreach ($changes as $change) {
       if ($change->getTransaction()->isCommentTransaction()) {
         continue;
       }
       $content_parts[] = $change->getNewValue();
     }
     if (!$content_parts) {
       return array();
     }
     $content_block = implode("\n\n", $content_parts);
     $task_map = array();
     $task_refs = id(new ManiphestCustomFieldStatusParser())
       ->parseCorpus($content_block);
     foreach ($task_refs as $match) {
       foreach ($match['monograms'] as $monogram) {
         $task_id = (int)trim($monogram, 'tT');
         $task_map[$task_id] = true;
       }
     }
 
     $rev_map = array();
     $rev_refs = id(new DifferentialCustomFieldDependsOnParser())
       ->parseCorpus($content_block);
     foreach ($rev_refs as $match) {
       foreach ($match['monograms'] as $monogram) {
         $rev_id = (int)trim($monogram, 'dD');
         $rev_map[$rev_id] = true;
       }
     }
 
     $edges = array();
     $task_phids = array();
     $rev_phids = array();
 
     if ($task_map) {
       $tasks = id(new ManiphestTaskQuery())
         ->setViewer($this->getActor())
         ->withIDs(array_keys($task_map))
         ->execute();
 
       if ($tasks) {
         $task_phids = mpull($tasks, 'getPHID', 'getPHID');
         $edge_related = DifferentialRevisionHasTaskEdgeType::EDGECONST;
         $edges[$edge_related] = $task_phids;
       }
     }
 
     if ($rev_map) {
       $revs = id(new DifferentialRevisionQuery())
         ->setViewer($this->getActor())
         ->withIDs(array_keys($rev_map))
         ->execute();
       $rev_phids = mpull($revs, 'getPHID', 'getPHID');
 
       // NOTE: Skip any write attempts if a user cleverly implies a revision
       // depends upon itself.
       unset($rev_phids[$object->getPHID()]);
 
       if ($revs) {
         $depends = DifferentialRevisionDependsOnRevisionEdgeType::EDGECONST;
         $edges[$depends] = $rev_phids;
       }
     }
 
     $this->setUnmentionablePHIDMap(array_merge($task_phids, $rev_phids));
 
     $result = array();
     foreach ($edges as $type => $specs) {
       $result[] = id(new DifferentialTransaction())
         ->setTransactionType(PhabricatorTransactions::TYPE_EDGE)
         ->setMetadataValue('edge:type', $type)
         ->setNewValue(array('+' => $specs));
     }
 
     return $result;
   }
 
   private function appendInlineCommentsForMail(
     PhabricatorLiskDAO $object,
     array $inlines,
     PhabricatorMetaMTAMailBody $body) {
 
     $section = id(new DifferentialInlineCommentMailView())
       ->setViewer($this->getActor())
       ->setInlines($inlines)
       ->buildMailSection();
 
     $header = pht('INLINE COMMENTS');
 
     $section_text = "\n".$section->getPlaintext();
 
     $style = array(
       'margin: 6px 0 12px 0;',
     );
 
     $section_html = phutil_tag(
       'div',
       array(
         'style' => implode(' ', $style),
       ),
       $section->getHTML());
 
     $body->addPlaintextSection($header, $section_text, false);
     $body->addHTMLSection($header, $section_html);
   }
 
   private function appendChangeDetailsForMail(
     PhabricatorLiskDAO $object,
     DifferentialDiff $diff,
     $patch,
     PhabricatorMetaMTAMailBody $body) {
 
     $section = id(new DifferentialChangeDetailMailView())
       ->setViewer($this->getActor())
       ->setDiff($diff)
       ->setPatch($patch)
       ->buildMailSection();
 
     $header = pht('CHANGE DETAILS');
 
     $section_text = "\n".$section->getPlaintext();
 
     $style = array(
       'margin: 6px 0 12px 0;',
     );
 
     $section_html = phutil_tag(
       'div',
       array(
         'style' => implode(' ', $style),
       ),
       $section->getHTML());
 
     $body->addPlaintextSection($header, $section_text, false);
     $body->addHTMLSection($header, $section_html);
   }
 
   private function loadDiff($phid, $need_changesets = false) {
     $query = id(new DifferentialDiffQuery())
       ->withPHIDs(array($phid))
       ->setViewer($this->getActor());
 
     if ($need_changesets) {
       $query->needChangesets(true);
     }
 
     return $query->executeOne();
   }
 
   private function requireDiff($phid, $need_changesets = false) {
     $diff = $this->loadDiff($phid, $need_changesets);
     if (!$diff) {
       throw new Exception(pht('Diff "%s" does not exist!', $phid));
     }
 
     return $diff;
   }
 
 /* -(  Herald Integration  )------------------------------------------------- */
 
   protected function shouldApplyHeraldRules(
     PhabricatorLiskDAO $object,
     array $xactions) {
 
     if ($this->getIsNewObject()) {
       return true;
     }
 
     foreach ($xactions as $xaction) {
       switch ($xaction->getTransactionType()) {
         case DifferentialTransaction::TYPE_UPDATE:
           if (!$this->getIsCloseByCommit()) {
             return true;
           }
           break;
         case DifferentialRevisionCommandeerTransaction::TRANSACTIONTYPE:
           // When users commandeer revisions, we may need to trigger
           // signatures or author-based rules.
           return true;
-        case DifferentialTransaction::TYPE_ACTION:
-          switch ($xaction->getNewValue()) {
-            case DifferentialAction::ACTION_CLAIM:
-              // When users commandeer revisions, we may need to trigger
-              // signatures or author-based rules.
-              return true;
-          }
-          break;
       }
     }
 
     return parent::shouldApplyHeraldRules($object, $xactions);
   }
 
   protected function didApplyHeraldRules(
     PhabricatorLiskDAO $object,
     HeraldAdapter $adapter,
     HeraldTranscript $transcript) {
 
     $repository = $object->getRepository();
     if (!$repository) {
       return array();
     }
 
     if (!$this->affectedPaths) {
       return array();
     }
 
     $packages = PhabricatorOwnersPackage::loadAffectedPackages(
       $repository,
       $this->affectedPaths);
     if (!$packages) {
       return array();
     }
 
     // Remove packages that the revision author is an owner of. If you own
     // code, you don't need another owner to review it.
     $authority = id(new PhabricatorOwnersPackageQuery())
       ->setViewer(PhabricatorUser::getOmnipotentUser())
       ->withPHIDs(mpull($packages, 'getPHID'))
       ->withAuthorityPHIDs(array($object->getAuthorPHID()))
       ->execute();
     $authority = mpull($authority, null, 'getPHID');
 
     foreach ($packages as $key => $package) {
       $package_phid = $package->getPHID();
       if (isset($authority[$package_phid])) {
         unset($packages[$key]);
         continue;
       }
     }
 
     if (!$packages) {
       return array();
     }
 
     $auto_subscribe = array();
     $auto_review = array();
     $auto_block = array();
 
     foreach ($packages as $package) {
       switch ($package->getAutoReview()) {
         case PhabricatorOwnersPackage::AUTOREVIEW_SUBSCRIBE:
           $auto_subscribe[] = $package;
           break;
         case PhabricatorOwnersPackage::AUTOREVIEW_REVIEW:
           $auto_review[] = $package;
           break;
         case PhabricatorOwnersPackage::AUTOREVIEW_BLOCK:
           $auto_block[] = $package;
           break;
         case PhabricatorOwnersPackage::AUTOREVIEW_NONE:
         default:
           break;
       }
     }
 
     $owners_phid = id(new PhabricatorOwnersApplication())
       ->getPHID();
 
     $xactions = array();
     if ($auto_subscribe) {
       $xactions[] = $object->getApplicationTransactionTemplate()
         ->setAuthorPHID($owners_phid)
         ->setTransactionType(PhabricatorTransactions::TYPE_SUBSCRIBERS)
         ->setNewValue(
           array(
             '+' => mpull($auto_subscribe, 'getPHID'),
           ));
     }
 
     $specs = array(
       array($auto_review, false),
       array($auto_block, true),
     );
 
     foreach ($specs as $spec) {
       list($reviewers, $blocking) = $spec;
       if (!$reviewers) {
         continue;
       }
 
       $phids = mpull($reviewers, 'getPHID');
       $xaction = $this->newAutoReviewTransaction($object, $phids, $blocking);
       if ($xaction) {
         $xactions[] = $xaction;
       }
     }
 
     return $xactions;
   }
 
   private function newAutoReviewTransaction(
     PhabricatorLiskDAO $object,
     array $phids,
     $is_blocking) {
 
     // TODO: This is substantially similar to DifferentialReviewersHeraldAction
     // and both are needlessly complex. This logic should live in the normal
     // transaction application pipeline. See T10967.
 
     $reviewers = $object->getReviewers();
     $reviewers = mpull($reviewers, null, 'getReviewerPHID');
 
     if ($is_blocking) {
       $new_status = DifferentialReviewerStatus::STATUS_BLOCKING;
     } else {
       $new_status = DifferentialReviewerStatus::STATUS_ADDED;
     }
 
     $new_strength = DifferentialReviewerStatus::getStatusStrength(
       $new_status);
 
     $current = array();
     foreach ($phids as $phid) {
       if (!isset($reviewers[$phid])) {
         continue;
       }
 
       // If we're applying a stronger status (usually, upgrading a reviewer
       // into a blocking reviewer), skip this check so we apply the change.
       $old_strength = DifferentialReviewerStatus::getStatusStrength(
         $reviewers[$phid]->getReviewerStatus());
       if ($old_strength <= $new_strength) {
         continue;
       }
 
       $current[] = $phid;
     }
 
     $phids = array_diff($phids, $current);
 
     if (!$phids) {
       return null;
     }
 
     $phids = array_fuse($phids);
 
     $value = array();
     foreach ($phids as $phid) {
       if ($is_blocking) {
         $value[] = 'blocking('.$phid.')';
       } else {
         $value[] = $phid;
       }
     }
 
     $owners_phid = id(new PhabricatorOwnersApplication())
       ->getPHID();
 
     $reviewers_type = DifferentialRevisionReviewersTransaction::TRANSACTIONTYPE;
 
     return $object->getApplicationTransactionTemplate()
       ->setAuthorPHID($owners_phid)
       ->setTransactionType($reviewers_type)
       ->setNewValue(
         array(
           '+' => $value,
         ));
   }
 
   protected function buildHeraldAdapter(
     PhabricatorLiskDAO $object,
     array $xactions) {
 
     $revision = id(new DifferentialRevisionQuery())
       ->setViewer($this->getActor())
       ->withPHIDs(array($object->getPHID()))
       ->needActiveDiffs(true)
       ->needReviewers(true)
       ->executeOne();
     if (!$revision) {
       throw new Exception(
         pht('Failed to load revision for Herald adapter construction!'));
     }
 
     $adapter = HeraldDifferentialRevisionAdapter::newLegacyAdapter(
       $revision,
       $revision->getActiveDiff());
 
     return $adapter;
   }
 
   /**
    * Update the table which links Differential revisions to paths they affect,
    * so Diffusion can efficiently find pending revisions for a given file.
    */
   private function updateAffectedPathTable(
     DifferentialRevision $revision,
     DifferentialDiff $diff) {
 
     $repository = $revision->getRepository();
     if (!$repository) {
       // The repository where the code lives is untracked.
       return;
     }
 
     $path_prefix = null;
 
     $local_root = $diff->getSourceControlPath();
     if ($local_root) {
       // We're in a working copy which supports subdirectory checkouts (e.g.,
       // SVN) so we need to figure out what prefix we should add to each path
       // (e.g., trunk/projects/example/) to get the absolute path from the
       // root of the repository. DVCS systems like Git and Mercurial are not
       // affected.
 
       // Normalize both paths and check if the repository root is a prefix of
       // the local root. If so, throw it away. Note that this correctly handles
       // the case where the remote path is "/".
       $local_root = id(new PhutilURI($local_root))->getPath();
       $local_root = rtrim($local_root, '/');
 
       $repo_root = id(new PhutilURI($repository->getRemoteURI()))->getPath();
       $repo_root = rtrim($repo_root, '/');
 
       if (!strncmp($repo_root, $local_root, strlen($repo_root))) {
         $path_prefix = substr($local_root, strlen($repo_root));
       }
     }
 
     $changesets = $diff->getChangesets();
     $paths = array();
     foreach ($changesets as $changeset) {
       $paths[] = $path_prefix.'/'.$changeset->getFilename();
     }
 
     // Save the affected paths; we'll use them later to query Owners. This
     // uses the un-expanded paths.
     $this->affectedPaths = $paths;
 
     // Mark this as also touching all parent paths, so you can see all pending
     // changes to any file within a directory.
     $all_paths = array();
     foreach ($paths as $local) {
       foreach (DiffusionPathIDQuery::expandPathToRoot($local) as $path) {
         $all_paths[$path] = true;
       }
     }
     $all_paths = array_keys($all_paths);
 
     $path_ids =
       PhabricatorRepositoryCommitChangeParserWorker::lookupOrCreatePaths(
         $all_paths);
 
     $table = new DifferentialAffectedPath();
     $conn_w = $table->establishConnection('w');
 
     $sql = array();
     foreach ($path_ids as $path_id) {
       $sql[] = qsprintf(
         $conn_w,
         '(%d, %d, %d, %d)',
         $repository->getID(),
         $path_id,
         time(),
         $revision->getID());
     }
 
     queryfx(
       $conn_w,
       'DELETE FROM %T WHERE revisionID = %d',
       $table->getTableName(),
       $revision->getID());
     foreach (array_chunk($sql, 256) as $chunk) {
       queryfx(
         $conn_w,
         'INSERT INTO %T (repositoryID, pathID, epoch, revisionID) VALUES %Q',
         $table->getTableName(),
         implode(', ', $chunk));
     }
   }
 
   /**
    * Update the table connecting revisions to DVCS local hashes, so we can
    * identify revisions by commit/tree hashes.
    */
   private function updateRevisionHashTable(
     DifferentialRevision $revision,
     DifferentialDiff $diff) {
 
     $vcs = $diff->getSourceControlSystem();
     if ($vcs == DifferentialRevisionControlSystem::SVN) {
       // Subversion has no local commit or tree hash information, so we don't
       // have to do anything.
       return;
     }
 
     $property = id(new DifferentialDiffProperty())->loadOneWhere(
       'diffID = %d AND name = %s',
       $diff->getID(),
       'local:commits');
     if (!$property) {
       return;
     }
 
     $hashes = array();
 
     $data = $property->getData();
     switch ($vcs) {
       case DifferentialRevisionControlSystem::GIT:
         foreach ($data as $commit) {
           $hashes[] = array(
             ArcanistDifferentialRevisionHash::HASH_GIT_COMMIT,
             $commit['commit'],
           );
           $hashes[] = array(
             ArcanistDifferentialRevisionHash::HASH_GIT_TREE,
             $commit['tree'],
           );
         }
         break;
       case DifferentialRevisionControlSystem::MERCURIAL:
         foreach ($data as $commit) {
           $hashes[] = array(
             ArcanistDifferentialRevisionHash::HASH_MERCURIAL_COMMIT,
             $commit['rev'],
           );
         }
         break;
     }
 
     $conn_w = $revision->establishConnection('w');
 
     $sql = array();
     foreach ($hashes as $info) {
       list($type, $hash) = $info;
       $sql[] = qsprintf(
         $conn_w,
         '(%d, %s, %s)',
         $revision->getID(),
         $type,
         $hash);
     }
 
     queryfx(
       $conn_w,
       'DELETE FROM %T WHERE revisionID = %d',
       ArcanistDifferentialRevisionHash::TABLE_NAME,
       $revision->getID());
 
     if ($sql) {
       queryfx(
         $conn_w,
         'INSERT INTO %T (revisionID, type, hash) VALUES %Q',
         ArcanistDifferentialRevisionHash::TABLE_NAME,
         implode(', ', $sql));
     }
   }
 
   private function renderAffectedFilesForMail(DifferentialDiff $diff) {
     $changesets = $diff->getChangesets();
 
     $filenames = mpull($changesets, 'getDisplayFilename');
     sort($filenames);
 
     $count = count($filenames);
     $max = 250;
     if ($count > $max) {
       $filenames = array_slice($filenames, 0, $max);
       $filenames[] = pht('(%d more files...)', ($count - $max));
     }
 
     return implode("\n", $filenames);
   }
 
   private function renderPatchHTMLForMail($patch) {
     return phutil_tag('pre',
       array('style' => 'font-family: monospace;'), $patch);
   }
 
   private function buildPatchForMail(DifferentialDiff $diff) {
     $format = PhabricatorEnv::getEnvConfig('metamta.differential.patch-format');
 
     return id(new DifferentialRawDiffRenderer())
       ->setViewer($this->getActor())
       ->setFormat($format)
       ->setChangesets($diff->getChangesets())
       ->buildPatch();
   }
 
   protected function willPublish(PhabricatorLiskDAO $object, array $xactions) {
     // Reload to pick up the active diff and reviewer status.
     return id(new DifferentialRevisionQuery())
       ->setViewer($this->getActor())
       ->needReviewers(true)
       ->needActiveDiffs(true)
       ->withIDs(array($object->getID()))
       ->executeOne();
   }
 
   protected function getCustomWorkerState() {
     return array(
       'changedPriorToCommitURI' => $this->changedPriorToCommitURI,
     );
   }
 
   protected function loadCustomWorkerState(array $state) {
     $this->changedPriorToCommitURI = idx($state, 'changedPriorToCommitURI');
     return $this;
   }
 
   private function newCommandeerReviewerTransaction(
     DifferentialRevision $revision) {
 
     $actor_phid = $this->getActingAsPHID();
     $owner_phid = $revision->getAuthorPHID();
 
     // If the user is commandeering, add the previous owner as a
     // reviewer and remove the actor.
 
     $edits = array(
       '-' => array(
         $actor_phid,
       ),
       '+' => array(
         $owner_phid,
       ),
     );
 
     // NOTE: We're setting setIsCommandeerSideEffect() on this because normally
     // you can't add a revision's author as a reviewer, but this action swaps
     // them after validation executes.
 
     $xaction_type = DifferentialRevisionReviewersTransaction::TRANSACTIONTYPE;
 
     return id(new DifferentialTransaction())
       ->setTransactionType($xaction_type)
       ->setIgnoreOnNoEffect(true)
       ->setIsCommandeerSideEffect(true)
       ->setNewValue($edits);
   }
 
   public function getActiveDiff($object) {
     if ($this->getIsNewObject()) {
       return null;
     } else {
       return $object->getActiveDiff();
     }
   }
 
   /**
    * When a reviewer makes a comment, mark the last revision they commented
    * on.
    *
    * This allows us to show a hint to help authors and other reviewers quickly
    * distinguish between reviewers who have participated in the discussion and
    * reviewers who haven't been part of it.
    */
   private function markReviewerComments($object, array $xactions) {
     $acting_phid = $this->getActingAsPHID();
     if (!$acting_phid) {
       return;
     }
 
     $diff = $this->getActiveDiff($object);
     if (!$diff) {
       return;
     }
 
     $has_comment = false;
     foreach ($xactions as $xaction) {
       if ($xaction->hasComment()) {
         $has_comment = true;
         break;
       }
     }
 
     if (!$has_comment) {
       return;
     }
 
     $reviewer_table = new DifferentialReviewer();
     $conn = $reviewer_table->establishConnection('w');
 
     queryfx(
       $conn,
       'UPDATE %T SET lastCommentDiffPHID = %s
         WHERE revisionPHID = %s
         AND reviewerPHID = %s',
       $reviewer_table->getTableName(),
       $diff->getPHID(),
       $object->getPHID(),
       $acting_phid);
   }
 
 }
diff --git a/src/applications/differential/xaction/DifferentialRevisionCloseTransaction.php b/src/applications/differential/xaction/DifferentialRevisionCloseTransaction.php
index 30ca39a362..203b84a191 100644
--- a/src/applications/differential/xaction/DifferentialRevisionCloseTransaction.php
+++ b/src/applications/differential/xaction/DifferentialRevisionCloseTransaction.php
@@ -1,89 +1,136 @@
 <?php
 
 final class DifferentialRevisionCloseTransaction
   extends DifferentialRevisionActionTransaction {
 
   const TRANSACTIONTYPE = 'differential.revision.close';
   const ACTIONKEY = 'close';
 
   protected function getRevisionActionLabel() {
     return pht('Close Revision');
   }
 
   protected function getRevisionActionDescription() {
     return pht('This revision will be closed.');
   }
 
   public function getIcon() {
     return 'fa-check';
   }
 
   public function getColor() {
     return 'indigo';
   }
 
   protected function getRevisionActionOrder() {
     return 300;
   }
 
   public function getActionName() {
     return pht('Closed');
   }
 
   public function generateOldValue($object) {
     return $object->isClosed();
   }
 
   public function applyInternalEffects($object, $value) {
     $was_accepted = $object->isAccepted();
 
     $status_closed = ArcanistDifferentialRevisionStatus::CLOSED;
     $object->setStatus($status_closed);
 
     $object->setProperty(
       DifferentialRevision::PROPERTY_CLOSED_FROM_ACCEPTED,
       $was_accepted);
   }
 
   protected function validateAction($object, PhabricatorUser $viewer) {
+    if ($this->getEditor()->getIsCloseByCommit()) {
+      // If we're closing a revision because we discovered a commit, we don't
+      // care what state it was in.
+      return;
+    }
+
     if ($object->isClosed()) {
       throw new Exception(
         pht(
           'You can not close this revision because it has already been '.
           'closed. Only open revisions can be closed.'));
     }
 
     if (!$object->isAccepted()) {
       throw new Exception(
         pht(
           'You can not close this revision because it has not been accepted. '.
           'Revisions must be accepted before they can be closed.'));
     }
 
     $config_key = 'differential.always-allow-close';
     if (!PhabricatorEnv::getEnvConfig($config_key)) {
       if (!$this->isViewerRevisionAuthor($object, $viewer)) {
         throw new Exception(
           pht(
             'You can not close this revision because you are not the '.
             'author. You can only close revisions you own. You can change '.
             'this behavior by adjusting the "%s" setting in Config.',
             $config_key));
       }
     }
   }
 
   public function getTitle() {
-    return pht(
-      '%s closed this revision.',
-      $this->renderAuthor());
+    if (!$this->getMetadataValue('isCommitClose')) {
+      return pht(
+        '%s closed this revision.',
+        $this->renderAuthor());
+    }
+
+    $commit_phid = $this->getMetadataValue('commitPHID');
+    $committer_phid = $this->getMetadataValue('committerPHID');
+    $author_phid = $this->getMetadataValue('authorPHID');
+
+    if ($committer_phid) {
+      $committer_name = $this->renderHandle($committer_phid);
+    } else {
+      $committer_name = $this->getMetadataValue('committerName');
+    }
+
+    if ($author_phid) {
+      $author_name = $this->renderHandle($author_phid);
+    } else {
+      $author_name = $this->getMetadatavalue('authorName');
+    }
+
+    $same_phid =
+      strlen($committer_phid) &&
+      strlen($author_phid) &&
+      ($committer_phid == $author_phid);
+
+    $same_name =
+      !strlen($committer_phid) &&
+      !strlen($author_phid) &&
+      ($committer_name == $author_name);
+
+    if ($same_name || $same_phid) {
+      return pht(
+        'Closed by commit %s (authored by %s).',
+        $this->renderHandle($commit_phid),
+        $author_name);
+    } else {
+      return pht(
+        'Closed by commit %s (authored by %s, committed by %s).',
+        $this->renderHandle($commit_phid),
+        $author_name,
+        $committer_name);
+    }
   }
 
   public function getTitleForFeed() {
     return pht(
       '%s closed %s.',
       $this->renderAuthor(),
       $this->renderObject());
   }
 
 }
diff --git a/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php b/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php
index ab11a83b38..0d0ff28d95 100644
--- a/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php
+++ b/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php
@@ -1,415 +1,417 @@
 <?php
 
 abstract class PhabricatorRepositoryCommitMessageParserWorker
   extends PhabricatorRepositoryCommitParserWorker {
 
   protected function getImportStepFlag() {
     return PhabricatorRepositoryCommit::IMPORTED_MESSAGE;
   }
 
   abstract protected function getFollowupTaskClass();
 
   final protected function parseCommit(
     PhabricatorRepository $repository,
     PhabricatorRepositoryCommit $commit) {
 
     if (!$this->shouldSkipImportStep()) {
       $viewer = PhabricatorUser::getOmnipotentUser();
 
       $refs_raw = DiffusionQuery::callConduitWithDiffusionRequest(
         $viewer,
         DiffusionRequest::newFromDictionary(
           array(
             'repository' => $repository,
             'user' => $viewer,
           )),
         'diffusion.querycommits',
         array(
           'repositoryPHID' => $repository->getPHID(),
           'phids' => array($commit->getPHID()),
           'bypassCache' => true,
           'needMessages' => true,
         ));
 
       if (empty($refs_raw['data'])) {
         throw new Exception(
           pht(
             'Unable to retrieve details for commit "%s"!',
             $commit->getPHID()));
       }
 
       $ref = DiffusionCommitRef::newFromConduitResult(head($refs_raw['data']));
       $this->updateCommitData($ref);
     }
 
     if ($this->shouldQueueFollowupTasks()) {
       $this->queueTask(
         $this->getFollowupTaskClass(),
         array(
           'commitID' => $commit->getID(),
         ),
         array(
           // We queue followup tasks at default priority so that the queue
           // finishes work it has started before starting more work. If
           // followups are queued at the same priority level, we do all
           // message parses first, then all change parses, etc. This makes
           // progress uneven. See T11677 for discussion.
           'priority' => PhabricatorWorker::PRIORITY_DEFAULT,
         ));
     }
   }
 
   final protected function updateCommitData(DiffusionCommitRef $ref) {
     $commit = $this->commit;
     $author = $ref->getAuthor();
     $message = $ref->getMessage();
     $committer = $ref->getCommitter();
     $hashes = $ref->getHashes();
 
     $data = id(new PhabricatorRepositoryCommitData())->loadOneWhere(
       'commitID = %d',
       $commit->getID());
     if (!$data) {
       $data = new PhabricatorRepositoryCommitData();
     }
     $data->setCommitID($commit->getID());
     $data->setAuthorName(id(new PhutilUTF8StringTruncator())
       ->setMaximumBytes(255)
       ->truncateString((string)$author));
 
     $data->setCommitDetail('authorEpoch', $ref->getAuthorEpoch());
     $data->setCommitDetail('authorName', $ref->getAuthorName());
     $data->setCommitDetail('authorEmail', $ref->getAuthorEmail());
 
     $data->setCommitDetail(
       'authorPHID',
       $this->resolveUserPHID($commit, $author));
 
     $data->setCommitMessage($message);
 
     if (strlen($committer)) {
       $data->setCommitDetail('committer', $committer);
 
       $data->setCommitDetail('committerName', $ref->getCommitterName());
       $data->setCommitDetail('committerEmail', $ref->getCommitterEmail());
 
       $data->setCommitDetail(
         'committerPHID',
         $this->resolveUserPHID($commit, $committer));
     }
 
     $repository = $this->repository;
 
     $author_phid = $data->getCommitDetail('authorPHID');
     $committer_phid = $data->getCommitDetail('committerPHID');
 
     $user = new PhabricatorUser();
     if ($author_phid) {
       $user = $user->loadOneWhere(
         'phid = %s',
         $author_phid);
     }
 
     $differential_app = 'PhabricatorDifferentialApplication';
     $revision_id = null;
     $low_level_query = null;
     if (PhabricatorApplication::isClassInstalled($differential_app)) {
       $low_level_query = id(new DiffusionLowLevelCommitFieldsQuery())
         ->setRepository($repository)
         ->withCommitRef($ref);
       $field_values = $low_level_query->execute();
       $revision_id = idx($field_values, 'revisionID');
 
       if (!empty($field_values['reviewedByPHIDs'])) {
         $data->setCommitDetail(
           'reviewerPHID',
           reset($field_values['reviewedByPHIDs']));
       }
 
       $data->setCommitDetail('differential.revisionID', $revision_id);
     }
 
     if ($author_phid != $commit->getAuthorPHID()) {
       $commit->setAuthorPHID($author_phid);
     }
 
     $commit->setSummary($data->getSummary());
     $commit->save();
 
     // Figure out if we're going to try to "autoclose" related objects (e.g.,
     // close linked tasks and related revisions) and, if not, record why we
     // aren't. Autoclose can be disabled for various reasons at the repository
     // or commit levels.
 
     $force_autoclose = idx($this->getTaskData(), 'forceAutoclose', false);
     if ($force_autoclose) {
       $autoclose_reason = PhabricatorRepository::BECAUSE_AUTOCLOSE_FORCED;
     } else {
       $autoclose_reason = $repository->shouldSkipAutocloseCommit($commit);
     }
     $data->setCommitDetail('autocloseReason', $autoclose_reason);
     $should_autoclose = $force_autoclose ||
                         $repository->shouldAutocloseCommit($commit);
 
 
     // When updating related objects, we'll act under an omnipotent user to
     // ensure we can see them, but take actions as either the committer or
     // author (if we recognize their accounts) or the Diffusion application
     // (if we do not).
 
     $actor = PhabricatorUser::getOmnipotentUser();
     $acting_as_phid = nonempty(
       $committer_phid,
       $author_phid,
       id(new PhabricatorDiffusionApplication())->getPHID());
 
     $acting_user = $this->loadActingUser($actor, $acting_as_phid);
 
     $conn_w = id(new DifferentialRevision())->establishConnection('w');
 
     // NOTE: The `differential_commit` table has a unique ID on `commitPHID`,
     // preventing more than one revision from being associated with a commit.
     // Generally this is good and desirable, but with the advent of hash
     // tracking we may end up in a situation where we match several different
     // revisions. We just kind of ignore this and pick one, we might want to
     // revisit this and do something differently. (If we match several revisions
     // someone probably did something very silly, though.)
 
     $revision = null;
     if ($revision_id) {
       $revision_query = id(new DifferentialRevisionQuery())
         ->withIDs(array($revision_id))
         ->setViewer($actor)
         ->needReviewers(true)
         ->needActiveDiffs(true);
 
       $revision = $revision_query->executeOne();
 
       if ($revision) {
         if (!$data->getCommitDetail('precommitRevisionStatus')) {
           $data->setCommitDetail(
             'precommitRevisionStatus',
             $revision->getStatus());
         }
         $commit_drev = DiffusionCommitHasRevisionEdgeType::EDGECONST;
         id(new PhabricatorEdgeEditor())
           ->addEdge($commit->getPHID(), $commit_drev, $revision->getPHID())
           ->save();
 
         queryfx(
           $conn_w,
           'INSERT IGNORE INTO %T (revisionID, commitPHID) VALUES (%d, %s)',
           DifferentialRevision::TABLE_COMMIT,
           $revision->getID(),
           $commit->getPHID());
 
         $should_close = !$revision->isPublished() && $should_autoclose;
         if ($should_close) {
-           $commit_close_xaction = id(new DifferentialTransaction())
-            ->setTransactionType(DifferentialTransaction::TYPE_ACTION)
-            ->setNewValue(DifferentialAction::ACTION_CLOSE)
+          $type_close = DifferentialRevisionCloseTransaction::TRANSACTIONTYPE;
+
+          $commit_close_xaction = id(new DifferentialTransaction())
+            ->setTransactionType($type_close)
+            ->setNewValue(true)
             ->setMetadataValue('isCommitClose', true);
 
           $commit_close_xaction->setMetadataValue(
             'commitPHID',
             $commit->getPHID());
           $commit_close_xaction->setMetadataValue(
             'committerPHID',
             $committer_phid);
           $commit_close_xaction->setMetadataValue(
             'committerName',
             $data->getCommitDetail('committer'));
           $commit_close_xaction->setMetadataValue(
             'authorPHID',
             $author_phid);
           $commit_close_xaction->setMetadataValue(
             'authorName',
             $data->getAuthorName());
 
           if ($low_level_query) {
             $commit_close_xaction->setMetadataValue(
               'revisionMatchData',
               $low_level_query->getRevisionMatchData());
             $data->setCommitDetail(
               'revisionMatchData',
               $low_level_query->getRevisionMatchData());
           }
 
           $extraction_engine = id(new DifferentialDiffExtractionEngine())
             ->setViewer($actor)
             ->setAuthorPHID($acting_as_phid);
 
           $content_source = $this->newContentSource();
 
           $update_data = $extraction_engine->updateRevisionWithCommit(
             $revision,
             $commit,
             array(
               $commit_close_xaction,
             ),
             $content_source);
 
           foreach ($update_data as $key => $value) {
             $data->setCommitDetail($key, $value);
           }
         }
       }
     }
 
     if ($should_autoclose) {
       $this->closeTasks(
         $actor,
         $acting_as_phid,
         $repository,
         $commit,
         $message,
         $acting_user);
     }
 
     $data->save();
 
     $commit->writeImportStatusFlag(
       PhabricatorRepositoryCommit::IMPORTED_MESSAGE);
   }
 
   private function resolveUserPHID(
     PhabricatorRepositoryCommit $commit,
     $user_name) {
 
     return id(new DiffusionResolveUserQuery())
       ->withCommit($commit)
       ->withName($user_name)
       ->execute();
   }
 
   private function closeTasks(
     PhabricatorUser $actor,
     $acting_as,
     PhabricatorRepository $repository,
     PhabricatorRepositoryCommit $commit,
     $message,
     PhabricatorUser $acting_user = null) {
 
     // If we we were able to identify an author for the commit, we try to act
     // as that user when loading tasks marked with "Fixes Txxx". This prevents
     // mistakes where a user accidentally writes the wrong task IDs and affects
     // tasks they can't see (and thus can't undo the status changes for).
 
     // This is just a guard rail, not a security measure. An attacker can still
     // forge another user's identity trivially by forging author or committer
     // emails. We also let commits with unrecognized authors act on any task to
     // make behavior less confusing for new installs.
 
     if (!$acting_user) {
       $acting_user = $actor;
     }
 
     $maniphest = 'PhabricatorManiphestApplication';
     if (!PhabricatorApplication::isClassInstalled($maniphest)) {
       return;
     }
 
     $prefixes = ManiphestTaskStatus::getStatusPrefixMap();
     $suffixes = ManiphestTaskStatus::getStatusSuffixMap();
 
     $matches = id(new ManiphestCustomFieldStatusParser())
       ->parseCorpus($message);
 
     $task_statuses = array();
     foreach ($matches as $match) {
       $prefix = phutil_utf8_strtolower($match['prefix']);
       $suffix = phutil_utf8_strtolower($match['suffix']);
 
       $status = idx($suffixes, $suffix);
       if (!$status) {
         $status = idx($prefixes, $prefix);
       }
 
       foreach ($match['monograms'] as $task_monogram) {
         $task_id = (int)trim($task_monogram, 'tT');
         $task_statuses[$task_id] = $status;
       }
     }
 
     if (!$task_statuses) {
       return;
     }
 
     $tasks = id(new ManiphestTaskQuery())
       ->setViewer($acting_user)
       ->withIDs(array_keys($task_statuses))
       ->needProjectPHIDs(true)
       ->requireCapabilities(
         array(
           PhabricatorPolicyCapability::CAN_VIEW,
           PhabricatorPolicyCapability::CAN_EDIT,
         ))
       ->execute();
 
     foreach ($tasks as $task_id => $task) {
       $xactions = array();
 
       $edge_type = ManiphestTaskHasCommitEdgeType::EDGECONST;
       $edge_xaction = id(new ManiphestTransaction())
         ->setTransactionType(PhabricatorTransactions::TYPE_EDGE)
         ->setMetadataValue('edge:type', $edge_type)
         ->setNewValue(
           array(
             '+' => array(
               $commit->getPHID() => $commit->getPHID(),
             ),
           ));
 
       $status = $task_statuses[$task_id];
       if ($status) {
         if ($task->getStatus() != $status) {
           $xactions[] = id(new ManiphestTransaction())
             ->setTransactionType(
               ManiphestTaskStatusTransaction::TRANSACTIONTYPE)
             ->setMetadataValue('commitPHID', $commit->getPHID())
             ->setNewValue($status);
 
           $edge_xaction->setMetadataValue('commitPHID', $commit->getPHID());
         }
       }
 
       $xactions[] = $edge_xaction;
 
       $content_source = $this->newContentSource();
 
       $editor = id(new ManiphestTransactionEditor())
         ->setActor($actor)
         ->setActingAsPHID($acting_as)
         ->setContinueOnNoEffect(true)
         ->setContinueOnMissingFields(true)
         ->setUnmentionablePHIDMap(
           array($commit->getPHID() => $commit->getPHID()))
         ->setContentSource($content_source);
 
       $editor->applyTransactions($task, $xactions);
     }
   }
 
   private function loadActingUser(PhabricatorUser $viewer, $user_phid) {
     if (!$user_phid) {
       return null;
     }
 
     $user_type = PhabricatorPeopleUserPHIDType::TYPECONST;
     if (phid_get_type($user_phid) != $user_type) {
       return null;
     }
 
     $user = id(new PhabricatorPeopleQuery())
       ->setViewer($viewer)
       ->withPHIDs(array($user_phid))
       ->executeOne();
     if (!$user) {
       return null;
     }
 
     return $user;
   }
 
 
 }