diff --git a/src/configuration/ArcanistSettings.php b/src/configuration/ArcanistSettings.php
--- a/src/configuration/ArcanistSettings.php
+++ b/src/configuration/ArcanistSettings.php
@@ -6,27 +6,32 @@
     return array(
       'default' => array(
         'type' => 'string',
-        'help' =>
+        'help' => pht(
           'The URI of a Phabricator install to connect to by default, if '.
           'arc is run in a project without a Phabricator URI or run outside '.
-          'of a project.',
+          'of a project.'),
         'example' => '"http://phabricator.example.com/"',
       ),
       'base' => array(
         'type' => 'string',
-        'help' =>
+        'help' => pht(
           'Base commit ruleset to invoke when determining the start of a '.
           'commit range. See "Arcanist User Guide: Commit Ranges" for '.
-          'details.',
+          'details.'),
         'example' => '"arc:amended, arc:prompt"',
       ),
+      'generated-paths' => array(
+        'type' => 'list<regex>',
+        'help' => pht('Paths that are generated.'),
+        'example' => '["(^src/__phutil_library_map__.php$)"]',
+      ),
       'load' => array(
         'type' => 'list',
         'legacy' => 'phutil_libraries',
-        'help' =>
+        'help' => pht(
           'A list of paths to phutil libraries that should be loaded at '.
           'startup. This can be used to make classes available, like lint or '.
-          'unit test engines.',
+          'unit test engines.'),
         'example' => '["/var/arc/customlib/src"]',
         'default' => array(),
       ),
@@ -59,114 +64,115 @@
       'lint.engine' => array(
         'type' => 'string',
         'legacy' => 'lint_engine',
-        'help' =>
+        'help' => pht(
           'The name of a default lint engine to use, if no lint engine is '.
-          'specified by the current project.',
+          'specified by the current project.'),
         'example' => '"ExampleLintEngine"',
       ),
       'unit.engine' => array(
         'type' => 'string',
         'legacy' => 'unit_engine',
-        'help' =>
+        'help' => pht(
           'The name of a default unit test engine to use, if no unit test '.
-          'engine is specified by the current project.',
+          'engine is specified by the current project.'),
         'example' => '"ExampleUnitTestEngine"',
       ),
       'arc.feature.start.default' => array(
         'type' => 'string',
-        'help' =>
+        'help' => pht(
           'The name of the default branch to create the new feature branch '.
-          'off of.',
+          'off of.'),
         'example' => '"develop"',
       ),
       'arc.land.onto.default' => array(
         'type' => 'string',
-        'help' =>
+        'help' => pht(
           'The name of the default branch to land changes onto when '.
-          '`arc land` is run.',
+          '`%s` is run.',
+          'arc land'),
         'example' => '"develop"',
       ),
       'arc.land.update.default' => array(
         'type' => 'string',
-        'help' =>
+        'help' => pht(
           'The default strategy to use when arc land updates the feature '.
-          'branch. Supports \'rebase\' and \'merge\' strategies.',
+          'branch. Supports "rebase" and "merge" strategies.'),
         'example' => '"rebase"',
       ),
       'arc.lint.cache' => array(
         'type' => 'bool',
-        'help' =>
-          "Enable the lint cache by default. When enabled, 'arc lint' ".
-          "attempts to use cached results if possible. Currently, the cache ".
-          "is not always invalidated correctly and may cause 'arc lint' to ".
-          "report incorrect results, particularly while developing linters. ".
-          "This is probably worth enabling only if your linters are very slow.",
+        'help' => pht(
+          'Enable the lint cache by default. When enabled, `%s` attempts to '.
+          'use cached results if possible. Currently, the cache is not always '.
+          'invalidated correctly and may cause `%s` to report incorrect '.
+          'results, particularly while developing linters. This is probably '.
+          'worth enabling only if your linters are very slow.',
+          'arc lint',
+          'arc lint'),
         'example' => 'false',
         'default' => false,
       ),
       'history.immutable' => array(
         'type' => 'bool',
         'legacy' => 'immutable_history',
-        'help' =>
+        'help' => pht(
           'If true, arc will never change repository history (e.g., through '.
           'amending or rebasing). Defaults to true in Mercurial and false in '.
-          'Git. This setting has no effect in Subversion.',
+          'Git. This setting has no effect in Subversion.'),
         'example' => 'false',
       ),
       'editor' => array(
         'type' => 'string',
-        'help' =>
+        'help' => pht(
           "Command to use to invoke an interactive editor, like 'nano' or ".
-          "'vim'. This setting overrides the EDITOR environmental variable.",
+          "'vim'. This setting overrides the EDITOR environmental variable."),
         'example' => '"nano"',
       ),
       'https.cabundle' => array(
         'type' => 'string',
-        'help' =>
+        'help' => pht(
           "Path to a custom CA bundle file to be used for arcanist's cURL ".
           "calls. This is used primarily when your conduit endpoint is ".
-          "behind https signed by your organization's internal CA.",
+          "behind https signed by your organization's internal CA."),
         'example' => 'support/yourca.pem',
       ),
       'https.blindly-trust-domains' => array(
         'type' => 'list',
-        'help' => 'List of domains to blindly trust SSL certificates for. '.
-                  'Disables peer verification.',
+        'help' => pht(
+          'List of domains to blindly trust SSL certificates for. '.
+          'Disables peer verification.'),
         'example' => '["secure.mycompany.com"]',
         'default' => array(),
       ),
       'browser' => array(
         'type' => 'string',
-        'help' =>
-          'Command to use to invoke a web browser.',
+        'help' => pht('Command to use to invoke a web browser.'),
         'example' => '"gnome-www-browser"',
       ),
       'events.listeners' => array(
         'type' => 'list',
-        'help' => 'List of event listener classes to install at startup.',
+        'help' => pht('List of event listener classes to install at startup.'),
         'example' => '["ExampleEventListener"]',
         'default' => array(),
       ),
       'http.basicauth.user' => array(
         'type' => 'string',
-        'help' =>
-          'Username to use for basic auth over http transports',
+        'help' => pht('Username to use for basic auth over http transports'),
         'example' => '"bob"',
       ),
       'http.basicauth.pass' => array(
         'type' => 'string',
-        'help' =>
-          'Password to use for basic auth over http transports',
+        'help' => pht('Password to use for basic auth over http transports'),
         'example' => '"bobhasasecret"',
       ),
       'arc.autostash' => array(
         'type' => 'bool',
-        'help' =>
+        'help' => pht(
           'Whether arc should permit the automatic stashing of changes in '.
           'the working directory when requiring a clean working copy. '.
           'This option should only be used when users understand how '.
           'to restore their working directory from the local stash if '.
-          'an Arcanist operation causes an unrecoverable error.',
+          'an Arcanist operation causes an unrecoverable error.'),
         'example' => 'false',
         'default' => false,
       ),
diff --git a/src/workflow/ArcanistDiffWorkflow.php b/src/workflow/ArcanistDiffWorkflow.php
--- a/src/workflow/ArcanistDiffWorkflow.php
+++ b/src/workflow/ArcanistDiffWorkflow.php
@@ -494,6 +494,7 @@
     $this->updateLintDiffProperty();
     $this->updateUnitDiffProperty();
     $this->updateLocalDiffProperty();
+    $this->updateGeneratedDiffProperty();
     $this->resolveDiffPropertyUpdates();
 
     $output_json = $this->getArgument('json');
@@ -2360,6 +2361,18 @@
     $this->updateDiffProperty('local:commits', json_encode($local_info));
   }
 
+  /**
+   * Update generated paths for the diff.
+   *
+   * @task diffprop
+   */
+  private function updateGeneratedDiffProperty() {
+    $paths = $this->getWorkingCopy()->getProjectConfig('generated-paths');
+
+    if ($paths) {
+      $this->updateDiffProperty('arc:generated', json_encode($paths));
+    }
+  }
 
   /**
    * Update an arbitrary diff property.