diff --git a/src/applications/diffusion/controller/DiffusionBrowseController.php b/src/applications/diffusion/controller/DiffusionBrowseController.php
index d3223e64fd..b4c0352d53 100644
--- a/src/applications/diffusion/controller/DiffusionBrowseController.php
+++ b/src/applications/diffusion/controller/DiffusionBrowseController.php
@@ -1,1946 +1,1947 @@
 <?php
 
 final class DiffusionBrowseController extends DiffusionController {
 
   private $lintCommit;
   private $lintMessages;
   private $coverage;
   private $corpusButtons = array();
 
   public function shouldAllowPublic() {
     return true;
   }
 
   public function handleRequest(AphrontRequest $request) {
     $response = $this->loadDiffusionContext();
     if ($response) {
       return $response;
     }
 
     $drequest = $this->getDiffusionRequest();
 
     // Figure out if we're browsing a directory, a file, or a search result
     // list.
 
     $grep = $request->getStr('grep');
     if (strlen($grep)) {
       return $this->browseSearch();
     }
 
     $pager = id(new PHUIPagerView())
       ->readFromRequest($request);
 
     $results = DiffusionBrowseResultSet::newFromConduit(
       $this->callConduitWithDiffusionRequest(
         'diffusion.browsequery',
         array(
           'path' => $drequest->getPath(),
           'commit' => $drequest->getStableCommit(),
           'offset' => $pager->getOffset(),
           'limit' => $pager->getPageSize() + 1,
         )));
 
     $reason = $results->getReasonForEmptyResultSet();
     $is_file = ($reason == DiffusionBrowseResultSet::REASON_IS_FILE);
 
     if ($is_file) {
       return $this->browseFile();
     } else {
       $paths = $results->getPaths();
       $paths = $pager->sliceResults($paths);
       $results->setPaths($paths);
 
       return $this->browseDirectory($results, $pager);
     }
   }
 
   private function browseSearch() {
     $drequest = $this->getDiffusionRequest();
     $header = $this->buildHeaderView($drequest);
     $path = nonempty(basename($drequest->getPath()), '/');
 
     $search_results = $this->renderSearchResults();
     $search_form = $this->renderSearchForm($path);
 
     $search_form = phutil_tag(
       'div',
       array(
         'class' => 'diffusion-mobile-search-form',
       ),
       $search_form);
 
     $crumbs = $this->buildCrumbs(
       array(
         'branch' => true,
         'path'   => true,
         'view'   => 'browse',
       ));
     $crumbs->setBorder(true);
 
     $tabs = $this->buildTabsView('code');
 
     $view = id(new PHUITwoColumnView())
       ->setHeader($header)
       ->setTabs($tabs)
       ->setFooter(
         array(
           $search_form,
           $search_results,
         ));
 
     return $this->newPage()
       ->setTitle(
         array(
           nonempty(basename($drequest->getPath()), '/'),
           $drequest->getRepository()->getDisplayName(),
         ))
       ->setCrumbs($crumbs)
       ->appendChild($view);
   }
 
   private function browseFile() {
     $viewer = $this->getViewer();
     $request = $this->getRequest();
     $drequest = $this->getDiffusionRequest();
     $repository = $drequest->getRepository();
 
     $before = $request->getStr('before');
     if ($before) {
       return $this->buildBeforeResponse($before);
     }
 
     $path = $drequest->getPath();
 
     $blame_key = PhabricatorDiffusionBlameSetting::SETTINGKEY;
     $show_blame = $request->getBool(
       'blame',
       $viewer->getUserSetting($blame_key));
 
     $view = $request->getStr('view');
     if ($request->isFormPost() && $view != 'raw' && $viewer->isLoggedIn()) {
       $preferences = PhabricatorUserPreferences::loadUserPreferences($viewer);
 
       $editor = id(new PhabricatorUserPreferencesEditor())
         ->setActor($viewer)
         ->setContentSourceFromRequest($request)
         ->setContinueOnNoEffect(true)
         ->setContinueOnMissingFields(true);
 
       $xactions = array();
       $xactions[] = $preferences->newTransaction($blame_key, $show_blame);
       $editor->applyTransactions($preferences, $xactions);
 
       $uri = $request->getRequestURI()
         ->alter('blame', null);
 
       return id(new AphrontRedirectResponse())->setURI($uri);
     }
 
     // We need the blame information if blame is on and this is an Ajax request.
     // If blame is on and this is a colorized request, we don't show blame at
     // first (we ajax it in afterward) so we don't need to query for it.
     $needs_blame = ($show_blame && $request->isAjax());
 
     $params = array(
       'commit' => $drequest->getCommit(),
       'path' => $drequest->getPath(),
     );
 
     $byte_limit = null;
     if ($view !== 'raw') {
       $byte_limit = PhabricatorFileStorageEngine::getChunkThreshold();
       $time_limit = 10;
 
       $params += array(
         'timeout' => $time_limit,
         'byteLimit' => $byte_limit,
       );
     }
 
     $response = $this->callConduitWithDiffusionRequest(
       'diffusion.filecontentquery',
       $params);
 
     $hit_byte_limit = $response['tooHuge'];
     $hit_time_limit = $response['tooSlow'];
 
     $file_phid = $response['filePHID'];
     $show_editor = false;
     if ($hit_byte_limit) {
       $corpus = $this->buildErrorCorpus(
         pht(
           'This file is larger than %s byte(s), and too large to display '.
           'in the web UI.',
           phutil_format_bytes($byte_limit)));
     } else if ($hit_time_limit) {
       $corpus = $this->buildErrorCorpus(
         pht(
           'This file took too long to load from the repository (more than '.
           '%s second(s)).',
           new PhutilNumber($time_limit)));
     } else {
       $file = id(new PhabricatorFileQuery())
         ->setViewer($viewer)
         ->withPHIDs(array($file_phid))
         ->executeOne();
       if (!$file) {
         throw new Exception(pht('Failed to load content file!'));
       }
 
       if ($view === 'raw') {
         return $file->getRedirectResponse();
       }
 
       $data = $file->loadFileData();
 
       $lfs_ref = $this->getGitLFSRef($repository, $data);
       if ($lfs_ref) {
         if ($view == 'git-lfs') {
           $file = $this->loadGitLFSFile($lfs_ref);
 
           // Rename the file locally so we generate a better vanity URI for
           // it. In storage, it just has a name like "lfs-13f9a94c0923...",
           // since we don't get any hints about possible human-readable names
           // at upload time.
           $basename = basename($drequest->getPath());
           $file->makeEphemeral();
           $file->setName($basename);
 
           return $file->getRedirectResponse();
         } else {
           $corpus = $this->buildGitLFSCorpus($lfs_ref);
         }
       } else if (ArcanistDiffUtils::isHeuristicBinaryFile($data)) {
         $file_uri = $file->getBestURI();
 
         if ($file->isViewableImage()) {
           $corpus = $this->buildImageCorpus($file_uri);
         } else {
           $corpus = $this->buildBinaryCorpus($file_uri, $data);
         }
       } else {
         $this->loadLintMessages();
         $this->coverage = $drequest->loadCoverage();
         $show_editor = true;
 
         // Build the content of the file.
         $corpus = $this->buildCorpus(
           $show_blame,
           $data,
           $needs_blame,
           $drequest,
           $path,
           $data);
       }
     }
 
     if ($request->isAjax()) {
       return id(new AphrontAjaxResponse())->setContent($corpus);
     }
 
     require_celerity_resource('diffusion-source-css');
 
     // Render the page.
     $bar = $this->buildButtonBar($drequest, $show_blame, $show_editor);
     $header = $this->buildHeaderView($drequest);
     $header->setHeaderIcon('fa-file-code-o');
 
     $follow  = $request->getStr('follow');
     $follow_notice = null;
     if ($follow) {
       $follow_notice = id(new PHUIInfoView())
         ->setSeverity(PHUIInfoView::SEVERITY_WARNING)
         ->setTitle(pht('Unable to Continue'));
       switch ($follow) {
         case 'first':
           $follow_notice->appendChild(
             pht(
               'Unable to continue tracing the history of this file because '.
               'this commit is the first commit in the repository.'));
           break;
         case 'created':
           $follow_notice->appendChild(
             pht(
               'Unable to continue tracing the history of this file because '.
               'this commit created the file.'));
           break;
       }
     }
 
     $renamed = $request->getStr('renamed');
     $renamed_notice = null;
     if ($renamed) {
       $renamed_notice = id(new PHUIInfoView())
         ->setSeverity(PHUIInfoView::SEVERITY_NOTICE)
         ->setTitle(pht('File Renamed'))
         ->appendChild(
           pht(
             'File history passes through a rename from "%s" to "%s".',
             $drequest->getPath(),
             $renamed));
     }
 
     $open_revisions = $this->buildOpenRevisions();
     $owners_list = $this->buildOwnersList($drequest);
 
     $crumbs = $this->buildCrumbs(
       array(
         'branch' => true,
         'path'   => true,
         'view'   => 'browse',
       ));
     $crumbs->setBorder(true);
 
     $basename = basename($this->getDiffusionRequest()->getPath());
     $tabs = $this->buildTabsView('code');
     $bar->setRight($this->corpusButtons);
 
     $view = id(new PHUITwoColumnView())
       ->setHeader($header)
       ->setTabs($tabs)
       ->setFooter(array(
         $bar,
         $follow_notice,
         $renamed_notice,
         $corpus,
         $open_revisions,
         $owners_list,
       ));
 
     $title = array($basename, $repository->getDisplayName());
 
     return $this->newPage()
       ->setTitle($title)
       ->setCrumbs($crumbs)
       ->appendChild(
         array(
           $view,
       ));
 
   }
 
   public function browseDirectory(
     DiffusionBrowseResultSet $results,
     PHUIPagerView $pager) {
 
     $request = $this->getRequest();
     $drequest = $this->getDiffusionRequest();
     $repository = $drequest->getRepository();
 
     $reason = $results->getReasonForEmptyResultSet();
 
     $this->buildActionButtons($drequest, true);
     $details = $this->buildPropertyView($drequest);
 
     $header = $this->buildHeaderView($drequest);
     $header->setHeaderIcon('fa-folder-open');
 
     $empty_result = null;
     $browse_panel = null;
     $branch_panel = null;
     if (!$results->isValidResults()) {
       $empty_result = new DiffusionEmptyResultView();
       $empty_result->setDiffusionRequest($drequest);
       $empty_result->setDiffusionBrowseResultSet($results);
       $empty_result->setView($request->getStr('view'));
     } else {
       $phids = array();
       foreach ($results->getPaths() as $result) {
         $data = $result->getLastCommitData();
         if ($data) {
           if ($data->getCommitDetail('authorPHID')) {
             $phids[$data->getCommitDetail('authorPHID')] = true;
           }
         }
       }
 
       $phids = array_keys($phids);
       $handles = $this->loadViewerHandles($phids);
 
       $browse_table = id(new DiffusionBrowseTableView())
         ->setDiffusionRequest($drequest)
         ->setHandles($handles)
         ->setPaths($results->getPaths())
         ->setUser($request->getUser());
 
       $title = nonempty(basename($drequest->getPath()), '/');
       $icon = 'fa-folder-open';
       $browse_header = $this->buildPanelHeaderView($title, $icon);
 
       $browse_panel = id(new PHUIObjectBoxView())
         ->setHeader($browse_header)
         ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
         ->setTable($browse_table)
         ->addClass('diffusion-mobile-view')
         ->setPager($pager);
 
       $path = $drequest->getPath();
       $is_branch = (!strlen($path) && $repository->supportsBranchComparison());
       if ($is_branch) {
         $branch_panel = $this->buildBranchTable();
       }
     }
 
     $open_revisions = $this->buildOpenRevisions();
     $readme = $this->renderDirectoryReadme($results);
 
     $crumbs = $this->buildCrumbs(
       array(
         'branch' => true,
         'path'   => true,
         'view'   => 'browse',
       ));
 
     $crumbs->setBorder(true);
     $tabs = $this->buildTabsView('code');
     $owners_list = $this->buildOwnersList($drequest);
     $bar = id(new PHUILeftRightView())
       ->setRight($this->corpusButtons)
       ->addClass('diffusion-action-bar');
 
     $view = id(new PHUITwoColumnView())
       ->setHeader($header)
       ->setTabs($tabs)
       ->setFooter(
         array(
           $bar,
           $branch_panel,
           $empty_result,
           $browse_panel,
           $open_revisions,
           $owners_list,
           $readme,
         ));
 
     if ($details) {
       $view->addPropertySection(pht('Details'), $details);
     }
 
     return $this->newPage()
       ->setTitle(array(
           nonempty(basename($drequest->getPath()), '/'),
           $repository->getDisplayName(),
         ))
       ->setCrumbs($crumbs)
       ->appendChild(
         array(
           $view,
         ));
   }
 
   private function renderSearchResults() {
     $request = $this->getRequest();
 
     $drequest = $this->getDiffusionRequest();
     $repository = $drequest->getRepository();
     $results = array();
 
     $pager = id(new PHUIPagerView())
       ->readFromRequest($request);
 
     $search_mode = null;
     switch ($repository->getVersionControlSystem()) {
       case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
         $results = array();
         break;
       default:
         if (strlen($this->getRequest()->getStr('grep'))) {
           $search_mode = 'grep';
           $query_string = $request->getStr('grep');
           $results = $this->callConduitWithDiffusionRequest(
             'diffusion.searchquery',
             array(
               'grep' => $query_string,
               'commit' => $drequest->getStableCommit(),
               'path' => $drequest->getPath(),
               'limit' => $pager->getPageSize() + 1,
               'offset' => $pager->getOffset(),
             ));
         }
         break;
     }
     $results = $pager->sliceResults($results);
 
     $table = null;
     $header = null;
     if ($search_mode == 'grep') {
       $table = $this->renderGrepResults($results, $query_string);
       $title = pht(
         'File content matching "%s" under "%s"',
         $query_string,
         nonempty($drequest->getPath(), '/'));
       $header = id(new PHUIHeaderView())
         ->setHeader($title)
         ->addClass('diffusion-search-result-header');
     }
 
     return array($header, $table, $pager);
 
   }
 
   private function renderGrepResults(array $results, $pattern) {
     $drequest = $this->getDiffusionRequest();
     require_celerity_resource('phabricator-search-results-css');
 
     if (!$results) {
       return id(new PHUIInfoView())
         ->setSeverity(PHUIInfoView::SEVERITY_NODATA)
         ->appendChild(
           pht(
             'The pattern you searched for was not found in the content of any '.
             'files.'));
     }
 
     $grouped = array();
     foreach ($results as $file) {
       list($path, $line, $string) = $file;
       $grouped[$path][] = array($line, $string);
     }
 
     $view = array();
     foreach ($grouped as $path => $matches) {
       $view[] = id(new DiffusionPatternSearchView())
         ->setPath($path)
         ->setMatches($matches)
         ->setPattern($pattern)
         ->setDiffusionRequest($drequest)
         ->render();
     }
 
     return $view;
   }
 
   private function loadLintMessages() {
     $drequest = $this->getDiffusionRequest();
     $branch = $drequest->loadBranch();
 
     if (!$branch || !$branch->getLintCommit()) {
       return;
     }
 
     $this->lintCommit = $branch->getLintCommit();
 
     $conn = id(new PhabricatorRepository())->establishConnection('r');
 
     $where = '';
     if ($drequest->getLint()) {
       $where = qsprintf(
         $conn,
         'AND code = %s',
         $drequest->getLint());
     }
 
     $this->lintMessages = queryfx_all(
       $conn,
       'SELECT * FROM %T WHERE branchID = %d %Q AND path = %s',
       PhabricatorRepository::TABLE_LINTMESSAGE,
       $branch->getID(),
       $where,
       '/'.$drequest->getPath());
   }
 
   private function buildCorpus(
     $show_blame,
     $file_corpus,
     $needs_blame,
     DiffusionRequest $drequest,
     $path,
     $data) {
 
     $viewer = $this->getViewer();
     $blame_timeout = 15;
     $blame_failed = false;
 
     $highlight_limit = DifferentialChangesetParser::HIGHLIGHT_BYTE_LIMIT;
     $blame_limit = DifferentialChangesetParser::HIGHLIGHT_BYTE_LIMIT;
     $can_highlight = (strlen($file_corpus) <= $highlight_limit);
     $can_blame = (strlen($file_corpus) <= $blame_limit);
 
     if ($needs_blame && $can_blame) {
       $blame = $this->loadBlame($path, $drequest->getCommit(), $blame_timeout);
       list($blame_list, $blame_commits) = $blame;
       if ($blame_list === null) {
         $blame_failed = true;
         $blame_list = array();
       }
     } else {
       $blame_list = array();
       $blame_commits = array();
     }
 
     require_celerity_resource('syntax-highlighting-css');
     if ($can_highlight) {
       $highlighted = PhabricatorSyntaxHighlighter::highlightWithFilename(
         $path,
         $file_corpus);
     } else {
       // Highlight as plain text to escape the content properly.
       $highlighted = PhabricatorSyntaxHighlighter::highlightWithLanguage(
         'txt',
         $file_corpus);
     }
 
     $lines = phutil_split_lines($highlighted);
 
     $rows = $this->buildDisplayRows(
       $lines,
       $blame_list,
       $blame_commits,
       $show_blame);
 
     $corpus_table = javelin_tag(
       'table',
       array(
         'class' => 'diffusion-source remarkup-code PhabricatorMonospaced',
         'sigil' => 'phabricator-source',
       ),
       $rows);
 
     $corpus_table = phutil_tag_div('diffusion-source-wrap', $corpus_table);
 
     if ($this->getRequest()->isAjax()) {
       return $corpus_table;
     }
 
     $id = celerity_generate_unique_node_id();
 
     $repo = $drequest->getRepository();
     $symbol_repos = nonempty($repo->getSymbolSources(), array());
     $symbol_repos[] = $repo->getPHID();
 
     $lang = last(explode('.', $drequest->getPath()));
     $repo_languages = $repo->getSymbolLanguages();
     $repo_languages = nonempty($repo_languages, array());
     $repo_languages = array_fill_keys($repo_languages, true);
 
     $needs_symbols = true;
     if ($repo_languages && $symbol_repos) {
       $have_symbols = id(new DiffusionSymbolQuery())
           ->existsSymbolsInRepository($repo->getPHID());
       if (!$have_symbols) {
         $needs_symbols = false;
       }
     }
 
     if ($needs_symbols && $repo_languages) {
       $needs_symbols = isset($repo_languages[$lang]);
     }
 
     if ($needs_symbols) {
       Javelin::initBehavior(
         'repository-crossreference',
         array(
           'container' => $id,
           'lang' => $lang,
           'repositories' => $symbol_repos,
         ));
     }
 
     $corpus = phutil_tag(
       'div',
       array(
         'id' => $id,
       ),
       $corpus_table);
 
     Javelin::initBehavior('load-blame', array('id' => $id));
 
     $this->corpusButtons[] = $this->renderFileButton();
     $title = basename($this->getDiffusionRequest()->getPath());
     $icon = 'fa-file-code-o';
     $drequest = $this->getDiffusionRequest();
     $this->buildActionButtons($drequest);
 
     $header = $this->buildPanelHeaderView($title, $icon);
 
     $corpus = id(new PHUIObjectBoxView())
       ->setHeader($header)
       ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
       ->appendChild($corpus)
       ->addClass('diffusion-mobile-view')
       ->setCollapsed(true);
 
     $messages = array();
 
     if (!$can_highlight) {
       $messages[] = pht(
         'This file is larger than %s, so syntax highlighting is disabled '.
         'by default.',
         phutil_format_bytes($highlight_limit));
     }
 
     if ($show_blame && !$can_blame) {
       $messages[] = pht(
         'This file is larger than %s, so blame is disabled.',
         phutil_format_bytes($blame_limit));
     }
 
     if ($blame_failed) {
       $messages[] = pht(
         'Failed to load blame information for this file in %s second(s).',
         new PhutilNumber($blame_timeout));
     }
 
     if ($messages) {
       $corpus->setInfoView(
         id(new PHUIInfoView())
           ->setSeverity(PHUIInfoView::SEVERITY_WARNING)
           ->setErrors($messages));
     }
 
     return $corpus;
   }
 
   private function buildButtonBar(
     DiffusionRequest $drequest,
     $show_blame,
     $show_editor) {
 
     $viewer = $this->getViewer();
     $base_uri = $this->getRequest()->getRequestURI();
 
     $user = $this->getRequest()->getUser();
     $repository = $drequest->getRepository();
     $path = $drequest->getPath();
     $line = nonempty((int)$drequest->getLine(), 1);
     $buttons = array();
 
     $editor_link = $user->loadEditorLink($path, $line, $repository);
     $template = $user->loadEditorLink($path, '%l', $repository);
 
     $buttons[] =
       id(new PHUIButtonView())
         ->setTag('a')
         ->setText(pht('Last Change'))
         ->setColor(PHUIButtonView::GREY)
         ->setHref(
           $drequest->generateURI(
             array(
               'action' => 'change',
             )))
         ->setIcon('fa-backward');
 
     if ($show_blame) {
       $blame_text = pht('Disable Blame');
       $blame_icon = 'fa-exclamation-circle lightgreytext';
       $blame_value = 0;
     } else {
       $blame_text = pht('Enable Blame');
       $blame_icon = 'fa-exclamation-circle';
       $blame_value = 1;
     }
 
     $blame = id(new PHUIButtonView())
       ->setText($blame_text)
       ->setIcon($blame_icon)
       ->setUser($viewer)
       ->setSelected(!$blame_value)
       ->setColor(PHUIButtonView::GREY);
 
     if ($viewer->isLoggedIn()) {
       $blame = phabricator_form(
         $viewer,
         array(
           'action' => $base_uri->alter('blame', $blame_value),
           'method' => 'POST',
           'style' => 'display: inline-block;',
         ),
         $blame);
     } else {
       $blame->setTag('a');
       $blame->setHref($base_uri->alter('blame', $blame_value));
     }
     $buttons[] = $blame;
 
     if ($editor_link) {
       $buttons[] =
         id(new PHUIButtonView())
           ->setTag('a')
           ->setText(pht('Open File'))
           ->setHref($editor_link)
           ->setIcon('fa-pencil')
           ->setID('editor_link')
           ->setMetadata(array('link_template' => $template))
           ->setDisabled(!$editor_link)
           ->setColor(PHUIButtonView::GREY);
     }
 
     $href = null;
     $show_lint = true;
     if ($this->getRequest()->getStr('lint') !== null) {
       $lint_text = pht('Hide Lint');
       $href = $base_uri->alter('lint', null);
 
     } else if ($this->lintCommit === null) {
       $show_lint = false;
     } else {
       $lint_text = pht('Show Lint');
       $href = $this->getDiffusionRequest()->generateURI(array(
         'action' => 'browse',
         'commit' => $this->lintCommit,
       ))->alter('lint', '');
     }
 
     if ($show_lint) {
       $buttons[] =
         id(new PHUIButtonView())
           ->setTag('a')
           ->setText($lint_text)
           ->setHref($href)
           ->setIcon('fa-exclamation-triangle')
           ->setDisabled(!$href)
           ->setColor(PHUIButtonView::GREY);
     }
 
     $bar = id(new PHUILeftRightView())
       ->setLeft($buttons)
       ->addClass('diffusion-action-bar full-mobile-buttons');
     return $bar;
   }
 
   private function buildOwnersList(DiffusionRequest $drequest) {
     $viewer = $this->getViewer();
 
     $have_owners = PhabricatorApplication::isClassInstalledForViewer(
       'PhabricatorOwnersApplication',
       $viewer);
     if (!$have_owners) {
       return null;
     }
 
     $repository = $drequest->getRepository();
 
     $package_query = id(new PhabricatorOwnersPackageQuery())
       ->setViewer($viewer)
       ->withStatuses(array(PhabricatorOwnersPackage::STATUS_ACTIVE))
       ->withControl(
         $repository->getPHID(),
         array(
           $drequest->getPath(),
         ));
 
     $package_query->execute();
 
     $packages = $package_query->getControllingPackagesForPath(
       $repository->getPHID(),
       $drequest->getPath());
 
     $ownership = id(new PHUIObjectItemListView())
       ->setUser($viewer)
       ->setNoDataString(pht('No Owners'));
 
     if ($packages) {
       foreach ($packages as $package) {
         $item = id(new PHUIObjectItemView())
           ->setObject($package)
           ->setObjectName($package->getMonogram())
           ->setHeader($package->getName())
           ->setHref($package->getURI());
 
         $owners = $package->getOwners();
         if ($owners) {
           $owner_list = $viewer->renderHandleList(
             mpull($owners, 'getUserPHID'));
         } else {
           $owner_list = phutil_tag('em', array(), pht('None'));
         }
         $item->addAttribute(pht('Owners: %s', $owner_list));
 
         $auto = $package->getAutoReview();
         $autoreview_map = PhabricatorOwnersPackage::getAutoreviewOptionsMap();
         $spec = idx($autoreview_map, $auto, array());
         $name = idx($spec, 'name', $auto);
         $item->addIcon('fa-code', $name);
 
         if ($package->getAuditingEnabled()) {
           $item->addIcon('fa-check', pht('Auditing Enabled'));
         } else {
           $item->addIcon('fa-ban', pht('No Auditing'));
         }
 
         if ($package->isArchived()) {
           $item->setDisabled(true);
         }
 
         $ownership->addItem($item);
       }
     }
 
     $view = id(new PHUIObjectBoxView())
       ->setHeaderText(pht('Owner Packages'))
       ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
       ->addClass('diffusion-mobile-view')
       ->setObjectList($ownership);
 
     return $view;
   }
 
   private function renderFileButton($file_uri = null, $label = null) {
 
     $base_uri = $this->getRequest()->getRequestURI();
 
     if ($file_uri) {
       $text = pht('Download File');
       $href = $file_uri;
       $icon = 'fa-download';
     } else {
       $text = pht('Raw File');
       $href = $base_uri->alter('view', 'raw');
       $icon = 'fa-file-text';
     }
 
     if ($label !== null) {
       $text = $label;
     }
 
     $button = id(new PHUIButtonView())
       ->setTag('a')
       ->setText($text)
       ->setHref($href)
       ->setIcon($icon)
       ->setColor(PHUIButtonView::GREY);
 
     return $button;
   }
 
   private function renderGitLFSButton() {
     $viewer = $this->getViewer();
 
     $uri = $this->getRequest()->getRequestURI();
     $href = $uri->alter('view', 'git-lfs');
 
     $text = pht('Download from Git LFS');
     $icon = 'fa-download';
 
     return id(new PHUIButtonView())
       ->setTag('a')
       ->setText($text)
       ->setHref($href)
       ->setIcon($icon);
   }
 
   private function buildDisplayRows(
     array $lines,
     array $blame_list,
     array $blame_commits,
     $show_blame) {
 
     $request = $this->getRequest();
     $viewer = $this->getViewer();
     $drequest = $this->getDiffusionRequest();
     $repository = $drequest->getRepository();
 
     $revision_map = array();
     $revisions = array();
     if ($blame_commits) {
       $commit_map = mpull($blame_commits, 'getCommitIdentifier', 'getPHID');
 
       $revision_ids = id(new DifferentialRevision())
         ->loadIDsByCommitPHIDs(array_keys($commit_map));
       if ($revision_ids) {
         $revisions = id(new DifferentialRevisionQuery())
           ->setViewer($viewer)
           ->withIDs($revision_ids)
           ->execute();
         $revisions = mpull($revisions, null, 'getID');
       }
 
       foreach ($revision_ids as $commit_phid => $revision_id) {
         $revision_map[$commit_map[$commit_phid]] = $revision_id;
       }
     }
 
     $phids = array();
     foreach ($blame_commits as $commit) {
       $author_phid = $commit->getAuthorPHID();
       if ($author_phid === null) {
         continue;
       }
       $phids[$author_phid] = $author_phid;
     }
 
     foreach ($revisions as $revision) {
       $author_phid = $revision->getAuthorPHID();
       if ($author_phid === null) {
         continue;
       }
       $phids[$author_phid] = $author_phid;
     }
 
     $handles = $viewer->loadHandles($phids);
 
     $colors = array();
     if ($blame_commits) {
       $epochs = array();
 
       foreach ($blame_commits as $identifier => $commit) {
         $epochs[$identifier] = $commit->getEpoch();
       }
 
       $epoch_list = array_filter($epochs);
       $epoch_list = array_unique($epoch_list);
       $epoch_list = array_values($epoch_list);
 
       $epoch_min   = min($epoch_list);
       $epoch_max   = max($epoch_list);
       $epoch_range = ($epoch_max - $epoch_min) + 1;
 
       foreach ($blame_commits as $identifier => $commit) {
         $epoch = $epochs[$identifier];
         if (!$epoch) {
           $color = '#ffffdd'; // Warning color, missing data.
         } else {
           $color_ratio = ($epoch - $epoch_min) / $epoch_range;
           $color_value = 0xE6 * (1.0 - $color_ratio);
           $color = sprintf(
             '#%02x%02x%02x',
             $color_value,
             0xF6,
             $color_value);
         }
 
         $colors[$identifier] = $color;
       }
     }
 
     $display = array();
     $last_identifier = null;
     $last_color = null;
     foreach ($lines as $line_index => $line) {
       $color = '#f6f6f6';
       $duplicate = false;
       if (isset($blame_list[$line_index])) {
         $identifier = $blame_list[$line_index];
         if (isset($colors[$identifier])) {
           $color = $colors[$identifier];
         }
 
         if ($identifier === $last_identifier) {
           $duplicate = true;
         } else {
           $last_identifier = $identifier;
         }
       }
 
       $display[$line_index] = array(
         'data' => $line,
         'target' => false,
         'highlighted' => false,
         'color' => $color,
         'duplicate' => $duplicate,
       );
     }
 
     $line_arr = array();
     $line_str = $drequest->getLine();
     $ranges = explode(',', $line_str);
     foreach ($ranges as $range) {
       if (strpos($range, '-') !== false) {
         list($min, $max) = explode('-', $range, 2);
         $line_arr[] = array(
           'min' => min($min, $max),
           'max' => max($min, $max),
         );
       } else if (strlen($range)) {
         $line_arr[] = array(
           'min' => $range,
           'max' => $range,
         );
       }
     }
 
     // Mark the first highlighted line as the target line.
     if ($line_arr) {
       $target_line = $line_arr[0]['min'];
       if (isset($display[$target_line - 1])) {
         $display[$target_line - 1]['target'] = true;
       }
     }
 
     // Mark all other highlighted lines as highlighted.
     foreach ($line_arr as $range) {
       for ($ii = $range['min']; $ii <= $range['max']; $ii++) {
         if (isset($display[$ii - 1])) {
           $display[$ii - 1]['highlighted'] = true;
         }
       }
     }
 
     $engine = null;
     $inlines = array();
     if ($this->getRequest()->getStr('lint') !== null && $this->lintMessages) {
       $engine = new PhabricatorMarkupEngine();
       $engine->setViewer($viewer);
 
       foreach ($this->lintMessages as $message) {
         $inline = id(new PhabricatorAuditInlineComment())
           ->setSyntheticAuthor(
             ArcanistLintSeverity::getStringForSeverity($message['severity']).
             ' '.$message['code'].' ('.$message['name'].')')
           ->setLineNumber($message['line'])
           ->setContent($message['description']);
         $inlines[$message['line']][] = $inline;
 
         $engine->addObject(
           $inline,
           PhabricatorInlineCommentInterface::MARKUP_FIELD_BODY);
       }
 
       $engine->process();
       require_celerity_resource('differential-changeset-view-css');
     }
 
     $rows = $this->renderInlines(
       idx($inlines, 0, array()),
       $show_blame,
       (bool)$this->coverage,
       $engine);
 
     // NOTE: We're doing this manually because rendering is otherwise
     // dominated by URI generation for very large files.
     $line_base = (string)$drequest->generateURI(
       array(
         'action'  => 'browse',
         'stable'  => true,
       ));
 
     require_celerity_resource('aphront-tooltip-css');
     Javelin::initBehavior('phabricator-oncopy');
     Javelin::initBehavior('phabricator-tooltips');
     Javelin::initBehavior('phabricator-line-linker');
 
     // Render these once, since they tend to get repeated many times in large
     // blame outputs.
     $commit_links = $this->renderCommitLinks($blame_commits, $handles);
     $revision_links = $this->renderRevisionLinks($revisions, $handles);
 
     if ($this->coverage) {
       require_celerity_resource('differential-changeset-view-css');
       Javelin::initBehavior(
         'diffusion-browse-file',
         array(
           'labels' => array(
             'cov-C' => pht('Covered'),
             'cov-N' => pht('Not Covered'),
             'cov-U' => pht('Not Executable'),
           ),
         ));
     }
 
     foreach ($display as $line_index => $line) {
       $row = array();
 
       $line_number = $line_index + 1;
       $line_href = $line_base.'$'.$line_number;
 
       if (isset($blame_list[$line_index])) {
         $identifier = $blame_list[$line_index];
       } else {
         $identifier = null;
       }
 
       $revision_link = null;
       $commit_link = null;
       $before_link = null;
       $commit_date = null;
 
       $style = 'border-right: 3px solid '.$line['color'].';';
 
       if ($identifier && !$line['duplicate']) {
         if (isset($commit_links[$identifier])) {
           $commit_link = $commit_links[$identifier]['link'];
           $commit_date = $commit_links[$identifier]['date'];
         }
 
         if (isset($revision_map[$identifier])) {
           $revision_id = $revision_map[$identifier];
           if (isset($revision_links[$revision_id])) {
             $revision_link = $revision_links[$revision_id];
           }
         }
 
         $skip_href = $line_href.'?before='.$identifier.'&view=blame';
         $skip_text = pht('Skip Past This Commit');
         $icon = id(new PHUIIconView())
           ->setIcon('fa-caret-square-o-left');
 
         $before_link = javelin_tag(
           'a',
           array(
             'href'  => $skip_href,
             'sigil' => 'has-tooltip',
             'meta'  => array(
               'tip'     => $skip_text,
               'align'   => 'E',
               'size'    => 300,
             ),
           ),
           $icon);
       }
 
       if ($show_blame) {
         $row[] = phutil_tag(
           'th',
           array(
             'class' => 'diffusion-blame-link',
           ),
           $before_link);
 
         $row[] = phutil_tag(
           'th',
           array(
             'class' => 'diffusion-rev-link',
           ),
           $commit_link);
 
         if ($revision_map) {
           $row[] = phutil_tag(
             'th',
             array(
               'class' => 'diffusion-blame-revision',
             ),
             $revision_link);
         }
 
         $row[] = phutil_tag(
           'th',
           array(
             'class' => 'diffusion-blame-date',
           ),
           $commit_date);
       }
 
       $line_link = phutil_tag(
         'a',
         array(
           'href' => $line_href,
         ),
         $line_number);
 
       $row[] = javelin_tag(
         'th',
         array(
           'class' => 'diffusion-line-link ',
           'sigil' => 'phabricator-source-line',
           'style' => $style,
         ),
         $line_link);
 
       if ($line['target']) {
         Javelin::initBehavior(
           'diffusion-jump-to',
           array(
             'target' => 'scroll_target',
           ));
         $anchor_text = phutil_tag(
           'a',
           array(
             'id' => 'scroll_target',
           ),
           '');
       } else {
         $anchor_text = null;
       }
 
       $row[] = phutil_tag(
         'td',
         array(
         ),
         array(
           $anchor_text,
 
           // NOTE: See phabricator-oncopy behavior.
           "\xE2\x80\x8B",
 
           // TODO: [HTML] Not ideal.
           phutil_safe_html(str_replace("\t", '  ', $line['data'])),
         ));
 
       if ($this->coverage) {
         $cov_index = $line_index;
 
         if (isset($this->coverage[$cov_index])) {
           $cov_class = $this->coverage[$cov_index];
         } else {
           $cov_class = 'N';
         }
 
         $row[] = phutil_tag(
           'td',
           array(
             'class' => 'cov cov-'.$cov_class,
           ),
           '');
       }
 
       $rows[] = phutil_tag(
         'tr',
         array(
           'class' => ($line['highlighted'] ?
                       'phabricator-source-highlight' :
                       null),
         ),
         $row);
 
       $cur_inlines = $this->renderInlines(
         idx($inlines, $line_number, array()),
         $show_blame,
         $this->coverage,
         $engine);
       foreach ($cur_inlines as $cur_inline) {
         $rows[] = $cur_inline;
       }
     }
 
     return $rows;
   }
 
   private function renderInlines(
     array $inlines,
     $show_blame,
     $has_coverage,
     $engine) {
 
     $rows = array();
     foreach ($inlines as $inline) {
 
       // TODO: This should use modern scaffolding code.
 
       $inline_view = id(new PHUIDiffInlineCommentDetailView())
         ->setUser($this->getViewer())
         ->setMarkupEngine($engine)
         ->setInlineComment($inline)
         ->render();
 
       $row = array_fill(0, ($show_blame ? 3 : 1), phutil_tag('th'));
 
       $row[] = phutil_tag('td', array(), $inline_view);
 
       if ($has_coverage) {
         $row[] = phutil_tag(
           'td',
           array(
             'class' => 'cov cov-I',
           ));
       }
 
       $rows[] = phutil_tag('tr', array('class' => 'inline'), $row);
     }
 
     return $rows;
   }
 
   private function buildImageCorpus($file_uri) {
     $properties = new PHUIPropertyListView();
 
     $properties->addImageContent(
       phutil_tag(
         'img',
         array(
           'src' => $file_uri,
         )));
 
     $this->corpusButtons[] = $this->renderFileButton($file_uri);
     $title = basename($this->getDiffusionRequest()->getPath());
     $icon = 'fa-file-image-o';
     $drequest = $this->getDiffusionRequest();
     $this->buildActionButtons($drequest);
     $header = $this->buildPanelHeaderView($title, $icon);
 
     return id(new PHUIObjectBoxView())
       ->setHeader($header)
       ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
       ->addClass('diffusion-mobile-view')
       ->addPropertyList($properties);
   }
 
   private function buildBinaryCorpus($file_uri, $data) {
     $size = new PhutilNumber(strlen($data));
     $text = pht('This is a binary file. It is %s byte(s) in length.', $size);
     $text = id(new PHUIBoxView())
       ->addPadding(PHUI::PADDING_LARGE)
       ->appendChild($text);
 
     $this->corpusButtons[] = $this->renderFileButton($file_uri);
     $title = basename($this->getDiffusionRequest()->getPath());
     $icon = 'fa-file';
     $drequest = $this->getDiffusionRequest();
     $this->buildActionButtons($drequest);
     $header = $this->buildPanelHeaderView($title, $icon);
 
     $box = id(new PHUIObjectBoxView())
       ->setHeader($header)
       ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
       ->addClass('diffusion-mobile-view')
       ->appendChild($text);
 
     return $box;
   }
 
   private function buildErrorCorpus($message) {
     $text = id(new PHUIBoxView())
       ->addPadding(PHUI::PADDING_LARGE)
       ->appendChild($message);
 
     $header = id(new PHUIHeaderView())
       ->setHeader(pht('Details'));
 
     $box = id(new PHUIObjectBoxView())
       ->setHeader($header)
       ->appendChild($text);
 
     return $box;
   }
 
   private function buildBeforeResponse($before) {
     $request = $this->getRequest();
     $drequest = $this->getDiffusionRequest();
 
     // NOTE: We need to get the grandparent so we can capture filename changes
     // in the parent.
 
     $parent = $this->loadParentCommitOf($before);
     $old_filename = null;
     $was_created = false;
     if ($parent) {
       $grandparent = $this->loadParentCommitOf($parent);
 
       if ($grandparent) {
         $rename_query = new DiffusionRenameHistoryQuery();
         $rename_query->setRequest($drequest);
         $rename_query->setOldCommit($grandparent);
         $rename_query->setViewer($request->getUser());
         $old_filename = $rename_query->loadOldFilename();
         $was_created = $rename_query->getWasCreated();
       }
     }
 
     $follow = null;
     if ($was_created) {
       // If the file was created in history, that means older commits won't
       // have it. Since we know it existed at 'before', it must have been
       // created then; jump there.
       $target_commit = $before;
       $follow = 'created';
     } else if ($parent) {
       // If we found a parent, jump to it. This is the normal case.
       $target_commit = $parent;
     } else {
       // If there's no parent, this was probably created in the initial commit?
       // And the "was_created" check will fail because we can't identify the
       // grandparent. Keep the user at 'before'.
       $target_commit = $before;
       $follow = 'first';
     }
 
     $path = $drequest->getPath();
     $renamed = null;
     if ($old_filename !== null &&
         $old_filename !== '/'.$path) {
       $renamed = $path;
       $path = $old_filename;
     }
 
     $line = null;
     // If there's a follow error, drop the line so the user sees the message.
     if (!$follow) {
       $line = $this->getBeforeLineNumber($target_commit);
     }
 
     $before_uri = $drequest->generateURI(
       array(
         'action'    => 'browse',
         'commit'    => $target_commit,
         'line'      => $line,
         'path'      => $path,
       ));
 
     $before_uri->setQueryParams($request->getRequestURI()->getQueryParams());
     $before_uri = $before_uri->alter('before', null);
     $before_uri = $before_uri->alter('renamed', $renamed);
     $before_uri = $before_uri->alter('follow', $follow);
 
     return id(new AphrontRedirectResponse())->setURI($before_uri);
   }
 
   private function getBeforeLineNumber($target_commit) {
     $drequest = $this->getDiffusionRequest();
     $viewer = $this->getViewer();
 
     $line = $drequest->getLine();
     if (!$line) {
       return null;
     }
 
     $diff_info = $this->callConduitWithDiffusionRequest(
       'diffusion.rawdiffquery',
       array(
         'commit' => $drequest->getCommit(),
         'path' => $drequest->getPath(),
         'againstCommit' => $target_commit,
       ));
 
     $file_phid = $diff_info['filePHID'];
     $file = id(new PhabricatorFileQuery())
       ->setViewer($viewer)
       ->withPHIDs(array($file_phid))
       ->executeOne();
     if (!$file) {
       throw new Exception(
         pht(
           'Failed to load file ("%s") returned by "%s".',
           $file_phid,
           'diffusion.rawdiffquery.'));
     }
 
     $raw_diff = $file->loadFileData();
 
     $old_line = 0;
     $new_line = 0;
 
     foreach (explode("\n", $raw_diff) as $text) {
       if ($text[0] == '-' || $text[0] == ' ') {
         $old_line++;
       }
       if ($text[0] == '+' || $text[0] == ' ') {
         $new_line++;
       }
       if ($new_line == $line) {
         return $old_line;
       }
     }
 
     // We didn't find the target line.
     return $line;
   }
 
   private function loadParentCommitOf($commit) {
     $drequest = $this->getDiffusionRequest();
     $user = $this->getRequest()->getUser();
 
     $before_req = DiffusionRequest::newFromDictionary(
       array(
         'user' => $user,
         'repository' => $drequest->getRepository(),
         'commit' => $commit,
       ));
 
     $parents = DiffusionQuery::callConduitWithDiffusionRequest(
       $user,
       $before_req,
       'diffusion.commitparentsquery',
       array(
         'commit' => $commit,
       ));
 
     return head($parents);
   }
 
   protected function markupText($text) {
     $engine = PhabricatorMarkupEngine::newDiffusionMarkupEngine();
     $engine->setConfig('viewer', $this->getRequest()->getUser());
     $text = $engine->markupText($text);
 
     $text = phutil_tag(
       'div',
       array(
         'class' => 'phabricator-remarkup',
       ),
       $text);
 
     return $text;
   }
 
   protected function buildHeaderView(DiffusionRequest $drequest) {
     $viewer = $this->getViewer();
     $repository = $drequest->getRepository();
 
     $commit_tag = $this->renderCommitHashTag($drequest);
 
-    $path = nonempty(basename($drequest->getPath()), '/');
+    $path = nonempty($drequest->getPath(), '/');
+
     $search = $this->renderSearchForm($path);
 
     $header = id(new PHUIHeaderView())
       ->setUser($viewer)
       ->setHeader($this->renderPathLinks($drequest, $mode = 'browse'))
       ->addActionItem($search)
       ->addTag($commit_tag)
       ->addClass('diffusion-browse-header');
 
     if (!$repository->isSVN()) {
       $branch_tag = $this->renderBranchTag($drequest);
       $header->addTag($branch_tag);
     }
 
     return $header;
   }
 
   protected function buildPanelHeaderView($title, $icon) {
 
     $header = id(new PHUIHeaderView())
       ->setHeader($title)
       ->setHeaderIcon($icon)
       ->addClass('diffusion-panel-header-view');
 
     return $header;
 
   }
 
   protected function buildActionButtons(
     DiffusionRequest $drequest,
     $is_directory = false) {
 
     $viewer = $this->getViewer();
     $repository = $drequest->getRepository();
     $history_uri = $drequest->generateURI(array('action' => 'history'));
     $behind_head = $drequest->getSymbolicCommit();
     $compare = null;
     $head_uri = $drequest->generateURI(
       array(
         'commit' => '',
         'action' => 'browse',
       ));
 
     if ($repository->supportsBranchComparison() && $is_directory) {
       $compare_uri = $drequest->generateURI(array('action' => 'compare'));
       $compare = id(new PHUIButtonView())
         ->setText(pht('Compare'))
         ->setIcon('fa-code-fork')
         ->setWorkflow(true)
         ->setTag('a')
         ->setHref($compare_uri)
         ->setColor(PHUIButtonView::GREY);
       $this->corpusButtons[] = $compare;
     }
 
     $head = null;
     if ($behind_head) {
       $head = id(new PHUIButtonView())
         ->setTag('a')
         ->setText(pht('Back to HEAD'))
         ->setHref($head_uri)
         ->setIcon('fa-home')
         ->setColor(PHUIButtonView::GREY);
       $this->corpusButtons[] = $head;
     }
 
     $history = id(new PHUIButtonView())
       ->setText(pht('History'))
       ->setHref($history_uri)
       ->setTag('a')
       ->setIcon('fa-history')
       ->setColor(PHUIButtonView::GREY);
     $this->corpusButtons[] = $history;
 
   }
 
   protected function buildPropertyView(
     DiffusionRequest $drequest) {
 
     $viewer = $this->getViewer();
     $view = id(new PHUIPropertyListView())
       ->setUser($viewer);
 
     if ($drequest->getSymbolicType() == 'tag') {
       $symbolic = $drequest->getSymbolicCommit();
       $view->addProperty(pht('Tag'), $symbolic);
 
       $tags = $this->callConduitWithDiffusionRequest(
         'diffusion.tagsquery',
         array(
           'names' => array($symbolic),
           'needMessages' => true,
         ));
       $tags = DiffusionRepositoryTag::newFromConduit($tags);
 
       $tags = mpull($tags, null, 'getName');
       $tag = idx($tags, $symbolic);
 
       if ($tag && strlen($tag->getMessage())) {
         $view->addSectionHeader(
           pht('Tag Content'), 'fa-tag');
         $view->addTextContent($this->markupText($tag->getMessage()));
       }
     }
 
     if ($view->hasAnyProperties()) {
       return $view;
     }
 
     return null;
   }
 
   private function buildOpenRevisions() {
     $viewer = $this->getViewer();
 
     $drequest = $this->getDiffusionRequest();
     $repository = $drequest->getRepository();
     $path = $drequest->getPath();
 
     $path_map = id(new DiffusionPathIDQuery(array($path)))->loadPathIDs();
     $path_id = idx($path_map, $path);
     if (!$path_id) {
       return null;
     }
 
     $recent = (PhabricatorTime::getNow() - phutil_units('30 days in seconds'));
 
     $revisions = id(new DifferentialRevisionQuery())
       ->setViewer($viewer)
       ->withPath($repository->getID(), $path_id)
       ->withIsOpen(true)
       ->withUpdatedEpochBetween($recent, null)
       ->setOrder(DifferentialRevisionQuery::ORDER_MODIFIED)
       ->setLimit(10)
       ->needReviewers(true)
       ->needFlags(true)
       ->needDrafts(true)
       ->execute();
 
     if (!$revisions) {
       return null;
     }
 
     $header = id(new PHUIHeaderView())
       ->setHeader(pht('Recently Open Revisions'));
 
     $list = id(new DifferentialRevisionListView())
       ->setRevisions($revisions)
       ->setUser($viewer)
       ->setNoBox(true);
 
     $phids = $list->getRequiredHandlePHIDs();
     $handles = $this->loadViewerHandles($phids);
     $list->setHandles($handles);
 
     $view = id(new PHUIObjectBoxView())
       ->setHeader($header)
       ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
       ->addClass('diffusion-mobile-view')
       ->appendChild($list);
 
     return $view;
   }
 
   private function loadBlame($path, $commit, $timeout) {
     $blame = $this->callConduitWithDiffusionRequest(
       'diffusion.blame',
       array(
         'commit' => $commit,
         'paths' => array($path),
         'timeout' => $timeout,
       ));
 
     $identifiers = idx($blame, $path, null);
 
     if ($identifiers) {
       $viewer = $this->getViewer();
       $drequest = $this->getDiffusionRequest();
       $repository = $drequest->getRepository();
 
       $commits = id(new DiffusionCommitQuery())
         ->setViewer($viewer)
         ->withRepository($repository)
         ->withIdentifiers($identifiers)
         ->execute();
       $commits = mpull($commits, null, 'getCommitIdentifier');
     } else {
       $commits = array();
     }
 
     return array($identifiers, $commits);
   }
 
   private function renderCommitLinks(array $commits, $handles) {
     $links = array();
     $viewer = $this->getViewer();
     foreach ($commits as $identifier => $commit) {
       $date = phabricator_date($commit->getEpoch(), $viewer);
       $summary = trim($commit->getSummary());
 
       $commit_link = phutil_tag(
         'a',
         array(
           'href' => $commit->getURI(),
         ),
         $summary);
 
       $commit_date = phutil_tag(
         'a',
         array(
           'href' => $commit->getURI(),
         ),
         $date);
 
       $links[$identifier]['link'] = $commit_link;
       $links[$identifier]['date'] = $commit_date;
     }
 
     return $links;
   }
 
   private function renderRevisionLinks(array $revisions, $handles) {
     $links = array();
 
     foreach ($revisions as $revision) {
       $revision_id = $revision->getID();
       $revision_link = phutil_tag(
         'a',
         array(
           'href' => '/'.$revision->getMonogram(),
         ),
         $revision->getMonogram());
 
       $links[$revision_id] = $revision_link;
     }
 
     return $links;
   }
 
   private function getGitLFSRef(PhabricatorRepository $repository, $data) {
     if (!$repository->canUseGitLFS()) {
       return null;
     }
 
     $lfs_pattern = '(^version https://git-lfs\\.github\\.com/spec/v1[\r\n])';
     if (!preg_match($lfs_pattern, $data)) {
       return null;
     }
 
     $matches = null;
     if (!preg_match('(^oid sha256:(.*)$)m', $data, $matches)) {
       return null;
     }
 
     $hash = $matches[1];
     $hash = trim($hash);
 
     return id(new PhabricatorRepositoryGitLFSRefQuery())
       ->setViewer($this->getViewer())
       ->withRepositoryPHIDs(array($repository->getPHID()))
       ->withObjectHashes(array($hash))
       ->executeOne();
   }
 
   private function buildGitLFSCorpus(PhabricatorRepositoryGitLFSRef $ref) {
     // TODO: We should probably test if we can load the file PHID here and
     // show the user an error if we can't, rather than making them click
     // through to hit an error.
 
     $title = basename($this->getDiffusionRequest()->getPath());
     $icon = 'fa-archive';
     $drequest = $this->getDiffusionRequest();
     $this->buildActionButtons($drequest);
     $header = $this->buildPanelHeaderView($title, $icon);
 
     $severity = PHUIInfoView::SEVERITY_NOTICE;
 
     $messages = array();
     $messages[] = pht(
       'This %s file is stored in Git Large File Storage.',
       phutil_format_bytes($ref->getByteSize()));
 
     try {
       $file = $this->loadGitLFSFile($ref);
       $data = $this->renderGitLFSButton();
     } catch (Exception $ex) {
       $severity = PHUIInfoView::SEVERITY_ERROR;
       $messages[] = pht('The data for this file could not be loaded.');
     }
 
     $this->corpusButtons[] = $this->renderFileButton(
       null, pht('View Raw LFS Pointer'));
 
     $corpus = id(new PHUIObjectBoxView())
       ->setHeader($header)
       ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
       ->addClass('diffusion-mobile-view')
       ->setCollapsed(true);
 
     if ($messages) {
       $corpus->setInfoView(
         id(new PHUIInfoView())
           ->setSeverity($severity)
           ->setErrors($messages));
     }
 
     return $corpus;
   }
 
   private function loadGitLFSFile(PhabricatorRepositoryGitLFSRef $ref) {
     $viewer = $this->getViewer();
 
     $file = id(new PhabricatorFileQuery())
       ->setViewer($viewer)
       ->withPHIDs(array($ref->getFilePHID()))
       ->executeOne();
     if (!$file) {
       throw new Exception(
         pht(
           'Failed to load file object for Git LFS ref "%s"!',
           $ref->getObjectHash()));
     }
 
     return $file;
   }
 
   private function buildBranchTable() {
     $viewer = $this->getViewer();
     $drequest = $this->getDiffusionRequest();
     $repository = $drequest->getRepository();
 
     $branch = $drequest->getBranch();
     $default_branch = $repository->getDefaultBranch();
 
     if ($branch === $default_branch) {
       return null;
     }
 
     $pager = id(new PHUIPagerView())
       ->setPageSize(10);
 
     try {
       $results = $this->callConduitWithDiffusionRequest(
         'diffusion.historyquery',
         array(
           'commit' => $branch,
           'against' => $default_branch,
           'path' => $drequest->getPath(),
           'offset' => $pager->getOffset(),
           'limit' => $pager->getPageSize() + 1,
         ));
     } catch (Exception $ex) {
       return null;
     }
 
     $history = DiffusionPathChange::newFromConduit($results['pathChanges']);
     $history = $pager->sliceResults($history);
 
     if (!$history) {
       return null;
     }
 
     $history_table = id(new DiffusionHistoryTableView())
       ->setViewer($viewer)
       ->setDiffusionRequest($drequest)
       ->setHistory($history);
 
     $history_table->loadRevisions();
 
     $history_table
       ->setParents($results['parents'])
       ->setFilterParents(true)
       ->setIsHead(true)
       ->setIsTail(!$pager->getHasMorePages());
 
     $header = id(new PHUIHeaderView())
       ->setHeader(pht('%s vs %s', $branch, $default_branch));
 
     return id(new PHUIObjectBoxView())
       ->setHeader($header)
       ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
       ->addClass('diffusion-mobile-view')
       ->setTable($history_table);
   }
 
 }