diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index 97fb2cdd..defdbb03 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -154,6 +154,8 @@ phutil_register_library_map(array(
     'ArcanistDiffParserTestCase' => 'parser/__tests__/ArcanistDiffParserTestCase.php',
     'ArcanistDiffUtils' => 'difference/ArcanistDiffUtils.php',
     'ArcanistDiffUtilsTestCase' => 'difference/__tests__/ArcanistDiffUtilsTestCase.php',
+    'ArcanistDiffVectorNode' => 'difference/ArcanistDiffVectorNode.php',
+    'ArcanistDiffVectorTree' => 'difference/ArcanistDiffVectorTree.php',
     'ArcanistDiffWorkflow' => 'workflow/ArcanistDiffWorkflow.php',
     'ArcanistDifferentialCommitMessage' => 'differential/ArcanistDifferentialCommitMessage.php',
     'ArcanistDifferentialCommitMessageParserException' => 'differential/ArcanistDifferentialCommitMessageParserException.php',
@@ -691,7 +693,6 @@ phutil_register_library_map(array(
     'PhutilExecutionEnvironment' => 'utils/PhutilExecutionEnvironment.php',
     'PhutilFileLock' => 'filesystem/PhutilFileLock.php',
     'PhutilFileLockTestCase' => 'filesystem/__tests__/PhutilFileLockTestCase.php',
-    'PhutilFileTree' => 'filesystem/PhutilFileTree.php',
     'PhutilFrenchLocale' => 'internationalization/locales/PhutilFrenchLocale.php',
     'PhutilGermanLocale' => 'internationalization/locales/PhutilGermanLocale.php',
     'PhutilGitBinaryAnalyzer' => 'filesystem/binary/PhutilGitBinaryAnalyzer.php',
@@ -1134,6 +1135,8 @@ phutil_register_library_map(array(
     'ArcanistDiffParserTestCase' => 'PhutilTestCase',
     'ArcanistDiffUtils' => 'Phobject',
     'ArcanistDiffUtilsTestCase' => 'PhutilTestCase',
+    'ArcanistDiffVectorNode' => 'Phobject',
+    'ArcanistDiffVectorTree' => 'Phobject',
     'ArcanistDiffWorkflow' => 'ArcanistWorkflow',
     'ArcanistDifferentialCommitMessage' => 'Phobject',
     'ArcanistDifferentialCommitMessageParserException' => 'Exception',
@@ -1702,7 +1705,6 @@ phutil_register_library_map(array(
     'PhutilExecutionEnvironment' => 'Phobject',
     'PhutilFileLock' => 'PhutilLock',
     'PhutilFileLockTestCase' => 'PhutilTestCase',
-    'PhutilFileTree' => 'Phobject',
     'PhutilFrenchLocale' => 'PhutilLocale',
     'PhutilGermanLocale' => 'PhutilLocale',
     'PhutilGitBinaryAnalyzer' => 'PhutilBinaryAnalyzer',
diff --git a/src/browse/workflow/ArcanistBrowseWorkflow.php b/src/browse/workflow/ArcanistBrowseWorkflow.php
index 85143353..ffc41654 100644
--- a/src/browse/workflow/ArcanistBrowseWorkflow.php
+++ b/src/browse/workflow/ArcanistBrowseWorkflow.php
@@ -234,21 +234,8 @@ EOTEXT
 
       $ref_uri = head($ref_uris);
 
-      // TODO: "ArcanistRevisionRef", at least, may return a relative URI.
-      // If we get a relative URI, guess the correct absolute URI based on
-      // the Conduit URI. This might not be correct for Conduit over SSH.
-
       $raw_uri = $ref_uri->getURI();
-
-      $raw_uri = new PhutilURI($raw_uri);
-      if (!strlen($raw_uri->getDomain())) {
-        $base_uri = $this->getConduitEngine()
-          ->getConduitURI();
-
-        $raw_uri = id(new PhutilURI($base_uri))
-          ->setPath($raw_uri->getPath());
-      }
-      $raw_uri = phutil_string_cast($raw_uri);
+      $raw_uri = $this->getAbsoluteURI($raw_uri);
 
       $uris[] = $raw_uri;
     }
diff --git a/src/difference/ArcanistDiffVectorNode.php b/src/difference/ArcanistDiffVectorNode.php
new file mode 100644
index 00000000..2a4b8d9c
--- /dev/null
+++ b/src/difference/ArcanistDiffVectorNode.php
@@ -0,0 +1,113 @@
+<?php
+
+final class ArcanistDiffVectorNode
+  extends Phobject {
+
+  private $vector;
+  private $children = array();
+  private $parentNode;
+  private $displayNode;
+  private $displayVector;
+  private $displayDepth;
+  private $valueNode;
+  private $attributes = array();
+
+  public function setVector(array $vector) {
+    $this->vector = $vector;
+    return $this;
+  }
+
+  public function getVector() {
+    return $this->vector;
+  }
+
+  public function getChildren() {
+    return $this->children;
+  }
+
+  public function setParentNode(ArcanistDiffVectorNode $parent) {
+    $this->parentNode = $parent;
+    return $this;
+  }
+
+  public function getParentNode() {
+    return $this->parentNode;
+  }
+
+  public function addChild(array $vector, $length, $idx) {
+    $is_node = ($idx === ($length - 1));
+    $element = $vector[$idx];
+
+    if (!isset($this->children[$element])) {
+      $this->children[$element] = id(new self())
+        ->setParentNode($this)
+        ->setVector(array_slice($vector, 0, $idx + 1));
+    }
+
+    $child = $this->children[$element];
+
+    if ($is_node) {
+      $child->setValueNode($child);
+      return;
+    }
+
+    $child->addChild($vector, $length, $idx + 1);
+  }
+
+  public function getDisplayVector() {
+    return $this->displayVector;
+  }
+
+  public function appendDisplayElement($element) {
+    if ($this->displayVector === null) {
+      $this->displayVector = array();
+    }
+
+    $this->displayVector[] = $element;
+
+    return $this;
+  }
+
+  public function setDisplayNode(ArcanistDiffVectorNode $display_node) {
+    $this->displayNode = $display_node;
+    return $this;
+  }
+
+  public function getDisplayNode() {
+    return $this->displayNode;
+  }
+
+  public function setDisplayDepth($display_depth) {
+    $this->displayDepth = $display_depth;
+    return $this;
+  }
+
+  public function getDisplayDepth() {
+    return $this->displayDepth;
+  }
+
+  public function setValueNode($value_node) {
+    $this->valueNode = $value_node;
+    return $this;
+  }
+
+  public function getValueNode() {
+    return $this->valueNode;
+  }
+
+  public function setAncestralAttribute($key, $value) {
+    $this->attributes[$key] = $value;
+
+    $parent = $this->getParentNode();
+    if ($parent) {
+      $parent->setAncestralAttribute($key, $value);
+    }
+
+    return $this;
+  }
+
+  public function getAttribute($key, $default = null) {
+    return idx($this->attributes, $key, $default);
+  }
+
+}
diff --git a/src/difference/ArcanistDiffVectorTree.php b/src/difference/ArcanistDiffVectorTree.php
new file mode 100644
index 00000000..f0a3b72d
--- /dev/null
+++ b/src/difference/ArcanistDiffVectorTree.php
@@ -0,0 +1,95 @@
+<?php
+
+final class ArcanistDiffVectorTree
+  extends Phobject {
+
+  private $vectors;
+
+  public function addVector(array $vector) {
+    $this->vectors[] = $vector;
+    return $this;
+  }
+
+  public function newDisplayList() {
+    $root = new ArcanistDiffVectorNode();
+
+    foreach ($this->vectors as $vector) {
+      $root->addChild($vector, count($vector), 0);
+    }
+
+    foreach ($root->getChildren() as $child) {
+      $this->compressTree($child);
+    }
+
+    $root->setDisplayDepth(-1);
+    foreach ($root->getChildren() as $child) {
+      $this->updateDisplayDepth($child);
+    }
+
+    return $this->getDisplayList($root);
+  }
+
+  private function compressTree(ArcanistDiffVectorNode $node) {
+    $display_node = $node;
+
+    $children = $node->getChildren();
+    if ($children) {
+      $parent = $node->getParentNode();
+      if ($parent) {
+        $siblings = $parent->getChildren();
+        if (count($siblings) === 1) {
+          if (!$parent->getValueNode()) {
+            $parent_display = $parent->getDisplayNode();
+            if ($parent_display) {
+              $display_node = $parent_display;
+              if ($node->getValueNode()) {
+                $parent->setValueNode($node->getValueNode());
+              }
+            }
+          }
+        }
+      }
+    }
+
+    $node->setDisplayNode($display_node);
+
+    $display_element = last($node->getVector());
+    $display_node->appendDisplayElement($display_element);
+
+    foreach ($children as $child) {
+      $this->compressTree($child);
+    }
+  }
+
+  private function updateDisplayDepth(ArcanistDiffVectorNode $node) {
+    $parent_depth = $node->getParentNode()->getDisplayDepth();
+
+    if ($node->getDisplayVector() === null) {
+      $display_depth = $parent_depth;
+    } else {
+      $display_depth = $parent_depth + 1;
+    }
+
+    $node->setDisplayDepth($display_depth);
+
+    foreach ($node->getChildren() as $child) {
+      $this->updateDisplayDepth($child);
+    }
+  }
+
+  private function getDisplayList(ArcanistDiffVectorNode $node) {
+    $result = array();
+
+    foreach ($node->getChildren() as $child) {
+      if ($child->getDisplayVector() !== null) {
+        $result[] = $child;
+      }
+      foreach ($this->getDisplayList($child) as $item) {
+        $result[] = $item;
+      }
+    }
+
+    return $result;
+  }
+
+}
diff --git a/src/filesystem/PhutilFileTree.php b/src/filesystem/PhutilFileTree.php
deleted file mode 100644
index a2486e36..00000000
--- a/src/filesystem/PhutilFileTree.php
+++ /dev/null
@@ -1,112 +0,0 @@
-<?php
-
-/**
- * Data structure for representing filesystem directory trees.
- */
-final class PhutilFileTree extends Phobject {
-
-  private $name;
-  private $fullPath;
-  private $data;
-  private $depth = 0;
-  private $parentNode;
-  private $children = array();
-
-  public function addPath($path, $data) {
-    $parts = $this->splitPath($path);
-    $parts = array_reverse($parts);
-    $this->insertPath($parts, $data);
-    return $this;
-  }
-
-  public function destroy() {
-    $this->parentNode = null;
-    foreach ($this->children as $child) {
-      $child->destroy();
-    }
-    $this->children = array();
-    return $this;
-  }
-
-  /**
-   * Get the next node, iterating in depth-first order.
-   */
-  public function getNextNode() {
-    if ($this->children) {
-      return head($this->children);
-    }
-    $cursor = $this;
-    while ($cursor) {
-      if ($cursor->getNextSibling()) {
-        return $cursor->getNextSibling();
-      }
-      $cursor = $cursor->parentNode;
-    }
-    return null;
-  }
-
-  public function getName() {
-    return $this->name;
-  }
-
-  public function getFullPath() {
-    return $this->fullPath;
-  }
-
-  public function getDepth() {
-    return $this->depth;
-  }
-
-  public function getData() {
-    return $this->data;
-  }
-
-  protected function insertPath(array $parts, $data) {
-    $part = array_pop($parts);
-    if ($part === null) {
-      if ($this->data) {
-        $full_path = $this->getFullPath();
-        throw new Exception(
-          pht("Duplicate insertion for path '%s'.", $full_path));
-      }
-      $this->data = $data;
-      return;
-    }
-
-    if (empty($this->children[$part])) {
-      $node = new PhutilFileTree();
-      $node->parentNode = $this;
-      $node->depth = $this->depth + 1;
-      $node->name = $part;
-      $node->fullPath = $this->parentNode ? ($this->fullPath.'/'.$part) : $part;
-      $this->children[$part] = $node;
-    }
-
-    $this->children[$part]->insertPath($parts, $data);
-  }
-
-  protected function splitPath($path) {
-    $path = trim($path, '/');
-    $parts = preg_split('@/+@', $path);
-    return $parts;
-  }
-
-  protected function getNextSibling() {
-    if (!$this->parentNode) {
-      return null;
-    }
-
-    $found = false;
-    foreach ($this->parentNode->children as $node) {
-      if ($found) {
-        return $node;
-      }
-      if ($this->name === $node->name) {
-        $found = true;
-      }
-    }
-
-    return null;
-  }
-
-}
diff --git a/src/future/Future.php b/src/future/Future.php
index 7ac13258..3c371bc4 100644
--- a/src/future/Future.php
+++ b/src/future/Future.php
@@ -41,15 +41,15 @@ abstract class Future extends Phobject {
           'timeout.'));
     }
 
-    if ($this->hasException()) {
-      throw $this->getException();
-    }
-
-    if (!$this->hasResult()) {
+    if (!$this->hasResult() && !$this->hasException()) {
       $graph = new FutureIterator(array($this));
       $graph->resolveAll();
     }
 
+    if ($this->hasException()) {
+      throw $this->getException();
+    }
+
     return $this->getResult();
   }
 
diff --git a/src/future/exec/ExecFuture.php b/src/future/exec/ExecFuture.php
index 48911930..0264d4d3 100644
--- a/src/future/exec/ExecFuture.php
+++ b/src/future/exec/ExecFuture.php
@@ -713,7 +713,17 @@ final class ExecFuture extends PhutilExecutableFuture {
     while (isset($this->stdin) && $this->stdin->getByteLength()) {
       $write_segment = $this->stdin->getAnyPrefix();
 
-      $bytes = fwrite($stdin, $write_segment);
+      try {
+        $bytes = fwrite($stdin, $write_segment);
+      } catch (RuntimeException $ex) {
+        // If the subprocess has exited, we may get a broken pipe error here
+        // in recent versions of PHP. There does not seem to be any way to
+        // get the actual error code other than reading the exception string.
+
+        // For now, treat this as if writes are blocked.
+        break;
+      }
+
       if ($bytes === false) {
         throw new Exception(pht('Unable to write to stdin!'));
       } else if ($bytes) {
diff --git a/src/ref/file/ArcanistFileRef.php b/src/ref/file/ArcanistFileRef.php
index de588bd0..37fcf520 100644
--- a/src/ref/file/ArcanistFileRef.php
+++ b/src/ref/file/ArcanistFileRef.php
@@ -37,6 +37,16 @@ final class ArcanistFileRef
     return idxv($this->parameters, array('fields', 'size'));
   }
 
+  public function getURI() {
+    $uri = idxv($this->parameters, array('fields', 'uri'));
+
+    if ($uri === null) {
+      $uri = '/'.$this->getMonogram();
+    }
+
+    return $uri;
+  }
+
   public function getMonogram() {
     return 'F'.$this->getID();
   }
diff --git a/src/ref/paste/ArcanistPasteRef.php b/src/ref/paste/ArcanistPasteRef.php
index 04c8630d..2c4bb58d 100644
--- a/src/ref/paste/ArcanistPasteRef.php
+++ b/src/ref/paste/ArcanistPasteRef.php
@@ -30,7 +30,13 @@ final class ArcanistPasteRef
   }
 
   public function getURI() {
-    return idxv($this->parameters, array('fields', 'uri'));
+    $uri = idxv($this->parameters, array('fields', 'uri'));
+
+    if ($uri === null) {
+      $uri = '/'.$this->getMonogram();
+    }
+
+    return $uri;
   }
 
   public function getContent() {
diff --git a/src/workflow/ArcanistPasteWorkflow.php b/src/workflow/ArcanistPasteWorkflow.php
index 42df05b2..24468e7a 100644
--- a/src/workflow/ArcanistPasteWorkflow.php
+++ b/src/workflow/ArcanistPasteWorkflow.php
@@ -9,10 +9,11 @@ final class ArcanistPasteWorkflow
 
   public function getWorkflowInformation() {
     $help = pht(<<<EOTEXT
-Share and grab text using the Paste application. To create a paste,
-use stdin to provide the text:
+Share and grab text using the Paste application. To create a paste, use the
+"--input" flag or provide the text on stdin:
 
   $ cat list_of_ducks.txt | arc paste
+  $ arc paste --input list_of_ducks.txt
 
 To retrieve a paste, specify the paste ID:
 
@@ -34,8 +35,12 @@ EOTEXT
       $this->newWorkflowArgument('lang')
         ->setParameter('language')
         ->setHelp(pht('Language for the paste.')),
-      $this->newWorkflowArgument('json')
-        ->setHelp(pht('Output in JSON format.')),
+      $this->newWorkflowArgument('input')
+        ->setParameter('path')
+        ->setIsPathArgument(true)
+        ->setHelp(pht('Create a paste using the content in a file.')),
+      $this->newWorkflowArgument('browse')
+        ->setHelp(pht('After creating a paste, open it in a web browser.')),
       $this->newWorkflowArgument('argv')
         ->setWildcard(true),
     );
@@ -44,6 +49,8 @@ EOTEXT
   public function runWorkflow() {
     $set_language = $this->getArgument('lang');
     $set_title = $this->getArgument('title');
+    $is_browse = $this->getArgument('browse');
+    $input_path = $this->getArgument('input');
 
     $argv = $this->getArgument('argv');
     if (count($argv) > 1) {
@@ -52,6 +59,8 @@ EOTEXT
           'Specify only one paste to retrieve.'));
     }
 
+    $is_read = (count($argv) === 1);
+
     $symbols = $this->getSymbolEngine();
 
     if (count($argv) === 1) {
@@ -67,6 +76,19 @@ EOTEXT
             'Flag "--title" is not supported when reading pastes.'));
       }
 
+      if ($is_browse) {
+        throw new PhutilArgumentUsageException(
+          pht(
+            'Flag "--browse" is not supported when reading pastes. Use '.
+            '"arc browse" to browse known objects.'));
+      }
+
+      if ($input_path !== null) {
+        throw new PhutilArgumentUsageException(
+          pht(
+            'Flag "--input" is not supported when reading pastes.'));
+      }
+
       $paste_symbol = $argv[0];
 
       $paste_ref = $symbols->loadPasteForSymbol($paste_symbol);
@@ -74,7 +96,8 @@ EOTEXT
         throw new PhutilArgumentUsageException(
           pht(
             'Paste "%s" does not exist, or you do not have access '.
-            'to see it.'));
+            'to see it.',
+            $paste_symbol));
       }
 
       echo $paste_ref->getContent();
@@ -82,7 +105,11 @@ EOTEXT
       return 0;
     }
 
-    $content = $this->readStdin();
+    if ($input_path === null || $input_path === '-') {
+      $content = $this->readStdin();
+    } else {
+      $content = Filesystem::readFile($input_path);
+    }
 
     $xactions = array();
 
@@ -121,6 +148,9 @@ EOTEXT
     $paste_phid = idxv($result, array('object', 'phid'));
     $paste_ref = $symbols->loadPasteForSymbol($paste_phid);
 
+    $uri = $paste_ref->getURI();
+    $uri = $this->getAbsoluteURI($uri);
+
     $log = $this->getLogEngine();
 
     $log->writeSuccess(
@@ -130,7 +160,11 @@ EOTEXT
     echo tsprintf(
       '%s',
       $paste_ref->newDisplayRef()
-        ->setURI($paste_ref->getURI()));
+        ->setURI($uri));
+
+    if ($is_browse) {
+      $this->openURIsInBrowser(array($uri));
+    }
 
     return 0;
   }
diff --git a/src/workflow/ArcanistUploadWorkflow.php b/src/workflow/ArcanistUploadWorkflow.php
index e3506cb6..c9c9dd83 100644
--- a/src/workflow/ArcanistUploadWorkflow.php
+++ b/src/workflow/ArcanistUploadWorkflow.php
@@ -23,6 +23,10 @@ EOTEXT
     return array(
       $this->newWorkflowArgument('json')
         ->setHelp(pht('Output upload information in JSON format.')),
+      $this->newWorkflowArgument('browse')
+        ->setHelp(
+          pht(
+            'After the upload completes, open the files in a web browser.')),
       $this->newWorkflowArgument('temporary')
         ->setHelp(
           pht(
@@ -42,6 +46,7 @@ EOTEXT
 
     $is_temporary = $this->getArgument('temporary');
     $is_json = $this->getArgument('json');
+    $is_browse = $this->getArgument('browse');
     $paths = $this->getArgument('paths');
 
     $conduit = $this->getConduitEngine();
@@ -65,35 +70,68 @@ EOTEXT
 
     $files = $uploader->uploadFiles();
 
-    $results = array();
+    $phids = array();
     foreach ($files as $file) {
-      // TODO: This could be handled more gracefully; just preserving behavior
-      // until we introduce `file.query` and modernize this.
+      // TODO: This could be handled more gracefully.
       if ($file->getErrors()) {
         throw new Exception(implode("\n", $file->getErrors()));
       }
-      $phid = $file->getPHID();
-      $name = $file->getName();
+      $phids[] = $file->getPHID();
+    }
 
-      $info = $conduit->resolveCall(
-        'file.info',
-        array(
-          'phid' => $phid,
-        ));
+    $symbols = $this->getSymbolEngine();
+    $symbol_refs = $symbols->loadFilesForSymbols($phids);
 
-      $results[$path] = $info;
-
-      if (!$is_json) {
-        $id = $info['id'];
-        echo "  F{$id} {$name}: ".$info['uri']."\n\n";
+    $refs = array();
+    foreach ($symbol_refs as $symbol_ref) {
+      $ref = $symbol_ref->getObject();
+      if ($ref === null) {
+        throw new Exception(
+          pht(
+            'Failed to resolve symbol ref "%s".',
+            $symbol_ref->getSymbol()));
       }
+      $refs[] = $ref;
     }
 
     if ($is_json) {
-      $output = id(new PhutilJSON())->encodeFormatted($results);
-      echo $output;
+      $json = array();
+
+      foreach ($refs as $key => $ref) {
+        $uri = $ref->getURI();
+        $uri = $this->getAbsoluteURI($uri);
+
+        $map = array(
+          'argument' => $paths[$key],
+          'id' => $ref->getID(),
+          'phid' => $ref->getPHID(),
+          'name' => $ref->getName(),
+          'uri' => $uri,
+        );
+
+        $json[] = $map;
+      }
+
+      echo id(new PhutilJSON())->encodeAsList($json);
     } else {
-      $this->writeStatus(pht('Done.'));
+      foreach ($refs as $ref) {
+        $uri = $ref->getURI();
+        $uri = $this->getAbsoluteURI($uri);
+        echo tsprintf(
+          '%s',
+          $ref->newDisplayRef()
+            ->setURI($uri));
+      }
+    }
+
+    if ($is_browse) {
+      $uris = array();
+      foreach ($refs as $ref) {
+        $uri = $ref->getURI();
+        $uri = $this->getAbsoluteURI($uri);
+        $uris[] = $uri;
+      }
+      $this->openURIsInBrowser($uris);
     }
 
     return 0;
diff --git a/src/workflow/ArcanistWorkflow.php b/src/workflow/ArcanistWorkflow.php
index 93e3e1ff..f4514698 100644
--- a/src/workflow/ArcanistWorkflow.php
+++ b/src/workflow/ArcanistWorkflow.php
@@ -2421,4 +2421,23 @@ abstract class ArcanistWorkflow extends Phobject {
     return $stdin->read();
   }
 
+  protected function getAbsoluteURI($raw_uri) {
+    // TODO: "ArcanistRevisionRef", at least, may return a relative URI.
+    // If we get a relative URI, guess the correct absolute URI based on
+    // the Conduit URI. This might not be correct for Conduit over SSH.
+
+    $raw_uri = new PhutilURI($raw_uri);
+    if (!strlen($raw_uri->getDomain())) {
+      $base_uri = $this->getConduitEngine()
+        ->getConduitURI();
+
+      $raw_uri = id(new PhutilURI($base_uri))
+        ->setPath($raw_uri->getPath());
+    }
+
+    $raw_uri = phutil_string_cast($raw_uri);
+
+    return $raw_uri;
+  }
+
 }