diff --git a/core/lib/Drupal/Core/Entity/HtmlEntityFormController.php b/core/lib/Drupal/Core/Entity/HtmlEntityFormController.php
index 86d8094..d299002 100644
--- a/core/lib/Drupal/Core/Entity/HtmlEntityFormController.php
+++ b/core/lib/Drupal/Core/Entity/HtmlEntityFormController.php
@@ -32,7 +32,7 @@ public function content(Request $request, $_entity_form) {
    * representing the entity and operation being performed.
    * Consider the following route:
    * @code
-   *   pattern: '/foo/{node}/bar'
+   *   path:  '/foo/{node}/bar'
    *   defaults:
    *     _entity_form: 'node.edit'
    * @endcode
@@ -40,7 +40,7 @@ public function content(Request $request, $_entity_form) {
    * If the entity type has a default form controller, only the name of the
    * entity {param} needs to be passed:
    * @code
-   *   pattern: '/foo/{node}/baz'
+   *   path:  '/foo/{node}/baz'
    *   defaults:
    *     _entity_form: 'node'
    * @endcode
diff --git a/core/lib/Drupal/Core/Routing/CompiledRoute.php b/core/lib/Drupal/Core/Routing/CompiledRoute.php
index cd8c74b..6594337 100644
--- a/core/lib/Drupal/Core/Routing/CompiledRoute.php
+++ b/core/lib/Drupal/Core/Routing/CompiledRoute.php
@@ -134,13 +134,13 @@ public function getRoute() {
   }
 
   /**
-   * Returns the pattern.
+   * Returns the path.
    *
    * @return string
-   *   The pattern.
+   *   The path.
    */
-  public function getPattern() {
-    return $this->route->getPattern();
+  public function getPath() {
+    return $this->route->getPath();
   }
 
   /**
diff --git a/core/lib/Drupal/Core/Routing/MatcherDumper.php b/core/lib/Drupal/Core/Routing/MatcherDumper.php
index 33f8801..8c91aa2 100644
--- a/core/lib/Drupal/Core/Routing/MatcherDumper.php
+++ b/core/lib/Drupal/Core/Routing/MatcherDumper.php
@@ -94,7 +94,7 @@ public function dump(array $options = array()) {
       'name',
       'route_set',
       'fit',
-      'pattern',
+      'path',
       'pattern_outline',
       'number_parts',
       'route',
@@ -107,7 +107,7 @@ public function dump(array $options = array()) {
         'name' => $name,
         'route_set' => $options['route_set'],
         'fit' => $compiled->getFit(),
-        'pattern' => $compiled->getPattern(),
+        'path' => $compiled->getPath(),
         'pattern_outline' => $compiled->getPatternOutline(),
         'number_parts' => $compiled->getNumParts(),
         'route' => serialize($route),
diff --git a/core/lib/Drupal/Core/Routing/RouteBuilder.php b/core/lib/Drupal/Core/Routing/RouteBuilder.php
index fd59967..7e5ebef 100644
--- a/core/lib/Drupal/Core/Routing/RouteBuilder.php
+++ b/core/lib/Drupal/Core/Routing/RouteBuilder.php
@@ -94,7 +94,7 @@ public function rebuild() {
           'options' => array(),
         );
 
-        $route = new Route($route_info['pattern'], $route_info['defaults'], $route_info['requirements'], $route_info['options']);
+        $route = new Route($route_info['path'], $route_info['defaults'], $route_info['requirements'], $route_info['options']);
         $collection->add($name, $route);
       }
 
diff --git a/core/lib/Drupal/Core/Routing/RouteCompiler.php b/core/lib/Drupal/Core/Routing/RouteCompiler.php
index bd6c7b4..771669a 100644
--- a/core/lib/Drupal/Core/Routing/RouteCompiler.php
+++ b/core/lib/Drupal/Core/Routing/RouteCompiler.php
@@ -125,7 +125,7 @@ public static function getFit($path) {
    *   The path string, stripped of placeholders that have default values.
    */
   protected static function getPathWithoutDefaults(Route $route) {
-    $path = $route->getPattern();
+    $path = $route->getPath();
     $defaults = $route->getDefaults();
 
     // Remove placeholders with default values from the outline, so that they
diff --git a/core/modules/action/action.routing.yml b/core/modules/action/action.routing.yml
index 1be5920..6991287 100644
--- a/core/modules/action/action.routing.yml
+++ b/core/modules/action/action.routing.yml
@@ -1,26 +1,26 @@
 action.admin:
-  pattern: '/admin/config/system/actions'
+  path:  '/admin/config/system/actions'
   defaults:
     _entity_list: 'action'
   requirements:
     _permission: 'administer actions'
 
 action.admin_add:
-  pattern: '/admin/config/system/actions/add/{action_id}'
+  path:  '/admin/config/system/actions/add/{action_id}'
   defaults:
     _entity_form: 'action.add'
   requirements:
     _permission: 'administer actions'
 
 action.admin_configure:
-  pattern: '/admin/config/system/actions/configure/{action}'
+  path:  '/admin/config/system/actions/configure/{action}'
   defaults:
     _entity_form: 'action.edit'
   requirements:
     _permission: 'administer actions'
 
 action.delete:
-  pattern: 'admin/config/system/actions/configure/{action}/delete'
+  path:  'admin/config/system/actions/configure/{action}/delete'
   defaults:
     _entity_form: 'action.delete'
   requirements:
diff --git a/core/modules/aggregator/aggregator.routing.yml b/core/modules/aggregator/aggregator.routing.yml
index 799c3ea..87d6011 100644
--- a/core/modules/aggregator/aggregator.routing.yml
+++ b/core/modules/aggregator/aggregator.routing.yml
@@ -1,138 +1,138 @@
 aggregator.admin_overview:
-  pattern: '/admin/config/services/aggregator'
+  path:  '/admin/config/services/aggregator'
   defaults:
     _content: '\Drupal\aggregator\Controller\AggregatorController::adminOverview'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.admin_settings:
-  pattern: '/admin/config/services/aggregator/settings'
+  path:  '/admin/config/services/aggregator/settings'
   defaults:
     _form: '\Drupal\aggregator\Form\SettingsForm'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.feed_items_delete:
-  pattern: '/admin/config/services/aggregator/remove/{aggregator_feed}'
+  path:  '/admin/config/services/aggregator/remove/{aggregator_feed}'
   defaults:
     _entity_form: 'aggregator_feed.remove_items'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.feed_delete:
-  pattern: '/admin/config/services/aggregator/delete/feed/{aggregator_feed}'
+  path:  '/admin/config/services/aggregator/delete/feed/{aggregator_feed}'
   defaults:
     _entity_form: 'aggregator_feed.delete'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.feed_add:
-  pattern: '/admin/config/services/aggregator/add/feed'
+  path:  '/admin/config/services/aggregator/add/feed'
   defaults:
     _content: '\Drupal\aggregator\Controller\AggregatorController::feedAdd'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.feed_configure:
-  pattern: '/aggregator/sources/{aggregator_feed}/configure'
+  path:  '/aggregator/sources/{aggregator_feed}/configure'
   defaults:
     _entity_form: 'aggregator_feed.default'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.feed_edit:
-  pattern: '/admin/config/services/aggregator/edit/feed/{aggregator_feed}'
+  path:  '/admin/config/services/aggregator/edit/feed/{aggregator_feed}'
   defaults:
     _entity_form: 'aggregator_feed.default'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.feed_refresh:
-  pattern: '/admin/config/services/aggregator/update/{aggregator_feed}'
+  path:  '/admin/config/services/aggregator/update/{aggregator_feed}'
   defaults:
     _controller: '\Drupal\aggregator\Controller\AggregatorController::feedRefresh'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.opml_add:
-  pattern: '/admin/config/services/aggregator/add/opml'
+  path:  '/admin/config/services/aggregator/add/opml'
   defaults:
     _form: '\Drupal\aggregator\Form\OpmlFeedAdd'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.feed_view:
-  pattern: '/aggregator/sources/{aggregator_feed}'
+  path:  '/aggregator/sources/{aggregator_feed}'
   defaults:
     _content: '\Drupal\aggregator\Controller\AggregatorController::viewFeed'
   requirements:
     _permission: 'access news feeds'
 
 aggregator.page_last:
-  pattern: '/aggregator'
+  path:  '/aggregator'
   defaults:
     _controller: '\Drupal\aggregator\Controller\AggregatorController::pageLast'
   requirements:
     _permission: 'access news feeds'
 
 aggregator.sources:
-  pattern: '/aggregator/sources'
+  path:  '/aggregator/sources'
   defaults:
     _content: '\Drupal\aggregator\Controller\AggregatorController::sources'
   requirements:
     _permission: 'access news feeds'
 
 aggregator.categories:
-  pattern: '/aggregator/categories'
+  path:  '/aggregator/categories'
   defaults:
     _content: '\Drupal\aggregator\Controller\AggregatorController::categories'
   requirements:
     _access_aggregator_categories: 'TRUE'
 
 aggregator.category_view:
-  pattern: '/aggregator/categories/{cid}'
+  path:  '/aggregator/categories/{cid}'
   defaults:
     _content: '\Drupal\aggregator\Controller\AggregatorController::viewCategory'
   requirements:
     _permission: 'access news feeds'
 
 aggregator.category_edit:
-  pattern: '/aggregator/categories/{cid}/configure'
+  path:  '/aggregator/categories/{cid}/configure'
   defaults:
     _form: '\Drupal\aggregator\Form\CategoryAdminForm'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.category_admin_edit:
-  pattern: '/admin/config/services/aggregator/edit/category/{cid}'
+  path:  '/admin/config/services/aggregator/edit/category/{cid}'
   defaults:
     _form: '\Drupal\aggregator\Form\CategoryAdminForm'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.category_delete:
-  pattern: '/admin/config/services/aggregator/delete/category/{cid}'
+  path:  '/admin/config/services/aggregator/delete/category/{cid}'
   defaults:
     _form: '\Drupal\aggregator\Form\CategoryDeleteForm'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.category_add:
-  pattern: '/admin/config/services/aggregator/add/category'
+  path:  '/admin/config/services/aggregator/add/category'
   defaults:
     _form: '\Drupal\aggregator\Form\CategoryAdminForm'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.categorize_category_form:
-  pattern: '/aggregator/categories/{cid}/categorize'
+  path:  '/aggregator/categories/{cid}/categorize'
   defaults:
     _form: '\Drupal\aggregator\Form\CategorizeCategoryForm'
   requirements:
     _permission: 'administer news feeds'
 
 aggregator.categorize_feed_form:
-  pattern: '/aggregator/sources/{aggregator_feed}/categorize'
+  path:  '/aggregator/sources/{aggregator_feed}/categorize'
   defaults:
     _form: '\Drupal\aggregator\Form\CategorizeFeedForm'
   requirements:
diff --git a/core/modules/aggregator/tests/modules/aggregator_test/aggregator_test.routing.yml b/core/modules/aggregator/tests/modules/aggregator_test/aggregator_test.routing.yml
index 1c377e0..09b663d 100644
--- a/core/modules/aggregator/tests/modules/aggregator_test/aggregator_test.routing.yml
+++ b/core/modules/aggregator/tests/modules/aggregator_test/aggregator_test.routing.yml
@@ -1,5 +1,5 @@
 aggregator_test.feed:
-  pattern: '/aggregator/test-feed/{use_last_modified}/{use_etag}'
+  path:  '/aggregator/test-feed/{use_last_modified}/{use_etag}'
   defaults:
     _controller: '\Drupal\aggregator_test\Controller\AggregatorTestRssController::testFeed'
     _title: 'Test feed static last modified date'
@@ -9,7 +9,7 @@ aggregator_test.feed:
     _permission: 'access content'
 
 aggregator_test.redirect:
-  pattern: '/aggregator/redirect'
+  path:  '/aggregator/redirect'
   defaults:
     _controller: '\Drupal\aggregator_test\Controller\AggregatorTestRssController::testRedirect'
     _title: 'Test feed with a redirect'
diff --git a/core/modules/ban/ban.routing.yml b/core/modules/ban/ban.routing.yml
index 4319478..d92b195 100644
--- a/core/modules/ban/ban.routing.yml
+++ b/core/modules/ban/ban.routing.yml
@@ -1,5 +1,5 @@
 ban.admin_page:
-  pattern: '/admin/config/people/ban/{default_ip}'
+  path:  '/admin/config/people/ban/{default_ip}'
   defaults:
     _form: '\Drupal\ban\Form\BanAdmin'
     default_ip: ''
@@ -7,7 +7,7 @@ ban.admin_page:
     _permission: 'ban IP addresses'
 
 ban.delete:
-  pattern: '/admin/config/people/ban/delete/{ban_id}'
+  path:  '/admin/config/people/ban/delete/{ban_id}'
   defaults:
     _form: '\Drupal\ban\Form\BanDelete'
   requirements:
diff --git a/core/modules/block/block.routing.yml b/core/modules/block/block.routing.yml
index 93f5e47..bcc3597 100644
--- a/core/modules/block/block.routing.yml
+++ b/core/modules/block/block.routing.yml
@@ -1,19 +1,19 @@
 block.admin_block_delete:
-  pattern: '/admin/structure/block/manage/{block}/delete'
+  path:  '/admin/structure/block/manage/{block}/delete'
   defaults:
     _entity_form: 'block.delete'
   requirements:
     _permission: 'administer blocks'
 
 block.admin_edit:
-  pattern: '/admin/structure/block/manage/{block}'
+  path:  '/admin/structure/block/manage/{block}'
   defaults:
     _entity_form: 'block.default'
   requirements:
     _entity_access: 'block.update'
 
 block.admin_display:
-  pattern: '/admin/structure/block'
+  path:  '/admin/structure/block'
   defaults:
     _content: '\Drupal\block\Controller\BlockListController::listing'
     entity_type: 'block'
@@ -21,7 +21,7 @@ block.admin_display:
     _permission: 'administer blocks'
 
 block.admin_add:
-  pattern: '/admin/structure/block/add/{plugin_id}/{theme}'
+  path:  '/admin/structure/block/add/{plugin_id}/{theme}'
   defaults:
     _content: '\Drupal\block\Controller\BlockAddController::blockAddConfigureForm'
     theme: null
@@ -30,7 +30,7 @@ block.admin_add:
     _permission: 'administer blocks'
 
 block.category_autocomplete:
-  pattern: '/block-category/autocomplete'
+  path:  '/block-category/autocomplete'
   defaults:
     _controller: '\Drupal\block\Controller\CategoryAutocompleteController::autocomplete'
   requirements:
diff --git a/core/modules/block/custom_block/custom_block.routing.yml b/core/modules/block/custom_block/custom_block.routing.yml
index 1e87bac..9ec5856 100644
--- a/core/modules/block/custom_block/custom_block.routing.yml
+++ b/core/modules/block/custom_block/custom_block.routing.yml
@@ -1,33 +1,33 @@
 custom_block.type_list:
-  pattern: '/admin/structure/block/custom-blocks/types'
+  path:  '/admin/structure/block/custom-blocks/types'
   defaults:
     _entity_list: 'custom_block_type'
   requirements:
     _permission: 'administer blocks'
 
 custom_block.add_page:
-  pattern: '/block/add'
+  path:  '/block/add'
   defaults:
     _content: 'Drupal\custom_block\Controller\CustomBlockController::add'
   requirements:
     _permission: 'administer blocks'
 
 custom_block.add_form:
-  pattern: block/add/{custom_block_type}
+  path:  block/add/{custom_block_type}
   defaults:
     _content: 'Drupal\custom_block\Controller\CustomBlockController::addForm'
   requirements:
     _permission: 'administer blocks'
 
 custom_block.type_delete:
-  pattern: '/admin/structure/block/custom-blocks/manage/{custom_block_type}/delete'
+  path:  '/admin/structure/block/custom-blocks/manage/{custom_block_type}/delete'
   defaults:
     _entity_form: 'custom_block_type.delete'
   requirements:
     _entity_access: 'custom_block_type.delete'
 
 custom_block.edit:
-  pattern: '/block/{custom_block}'
+  path:  '/block/{custom_block}'
   defaults:
     _entity_form: 'custom_block.edit'
   requirements:
@@ -35,28 +35,28 @@ custom_block.edit:
     custom_block: \d+
 
 custom_block.delete:
-  pattern: '/block/{custom_block}/delete'
+  path:  '/block/{custom_block}/delete'
   defaults:
     _entity_form: 'custom_block.delete'
   requirements:
     _entity_access: 'custom_block.delete'
 
 custom_block.type_add:
-  pattern: '/admin/structure/block/custom-blocks/types/add'
+  path:  '/admin/structure/block/custom-blocks/types/add'
   defaults:
     _entity_form: 'custom_block_type.add'
   requirements:
     _permission: 'administer blocks'
 
 custom_block.type_edit:
-  pattern: '/admin/structure/block/custom-blocks/manage/{custom_block_type}'
+  path:  '/admin/structure/block/custom-blocks/manage/{custom_block_type}'
   defaults:
     _entity_form: 'custom_block_type.edit'
   requirements:
     _entity_access: 'custom_block_type.update'
 
 custom_block.list:
-  pattern: '/admin/structure/block/custom-blocks'
+  path:  '/admin/structure/block/custom-blocks'
   defaults:
     _title: 'Custom block library'
     _entity_list: 'custom_block'
diff --git a/core/modules/book/book.routing.yml b/core/modules/book/book.routing.yml
index 733ae8c..b89cd21 100644
--- a/core/modules/book/book.routing.yml
+++ b/core/modules/book/book.routing.yml
@@ -1,26 +1,26 @@
 book.render:
-  pattern: '/book'
+  path:  '/book'
   defaults:
     _content: '\Drupal\book\Controller\BookController::bookRender'
   requirements:
     _permission: 'access content'
 
 book.admin:
-  pattern: '/admin/structure/book'
+  path:  '/admin/structure/book'
   defaults:
     _content: '\Drupal\book\Controller\BookController::adminOverview'
   requirements:
     _permission: 'administer book outlines'
 
 book.settings:
-  pattern: '/admin/structure/book/settings'
+  path:  '/admin/structure/book/settings'
   defaults:
     _form: '\Drupal\book\Form\BookSettingsForm'
   requirements:
     _permission: 'administer site configuration'
 
 book.export:
-  pattern: '/book/export/{type}/{node}'
+  path:  '/book/export/{type}/{node}'
   defaults:
     _controller: '\Drupal\book\Controller\BookController::bookExport'
   options:
@@ -30,7 +30,7 @@ book.export:
     _entity_access: 'node.view'
 
 book.outline:
-  pattern: '/node/{node}/outline'
+  path:  '/node/{node}/outline'
   defaults:
     _entity_form: 'node.book_outline'
   options:
@@ -40,7 +40,7 @@ book.outline:
     _entity_access: 'node.view'
 
 book.admin_edit:
-  pattern: '/admin/structure/book/{node}'
+  path:  '/admin/structure/book/{node}'
   defaults:
     _form: 'Drupal\book\Form\BookAdminEditForm'
     _title: 'Re-order book pages and change titles'
diff --git a/core/modules/comment/comment.routing.yml b/core/modules/comment/comment.routing.yml
index 7cbff29..8402140 100644
--- a/core/modules/comment/comment.routing.yml
+++ b/core/modules/comment/comment.routing.yml
@@ -1,12 +1,12 @@
 comment.edit_page:
-  pattern: '/comment/{comment}/edit'
+  path:  '/comment/{comment}/edit'
   defaults:
     _entity_form: 'comment.default'
   requirements:
     _entity_access: 'comment.update'
 
 comment.approve:
-  pattern: '/comment/{comment}/approve'
+  path:  '/comment/{comment}/approve'
   defaults:
     _content: '\Drupal\comment\Controller\CommentController::commentApprove'
     entity_type: 'comment'
@@ -14,21 +14,21 @@ comment.approve:
     _entity_access: 'comment.approve'
 
 comment.permalink:
-  pattern: '/comment/{comment}'
+  path:  '/comment/{comment}'
   defaults:
     _controller: '\Drupal\comment\Controller\CommentController::commentPermalink'
   requirements:
     _entity_access: 'comment.view'
 
 comment.confirm_delete:
-  pattern: '/comment/{comment}/delete'
+  path:  '/comment/{comment}/delete'
   defaults:
     _entity_form: 'comment.delete'
   requirements:
     _entity_access: 'comment.delete'
 
 comment.reply:
-  pattern: 'comment/reply/{node}/{pid}'
+  path:  'comment/reply/{node}/{pid}'
   defaults:
     _content: '\Drupal\comment\Controller\CommentController::getReplyForm'
     pid: ~
@@ -36,7 +36,7 @@ comment.reply:
     _entity_access: 'node.view'
 
 comment.new_comments_node_links:
-  pattern: '/comments/render_new_comments_node_links'
+  path:  '/comments/render_new_comments_node_links'
   defaults:
     _controller: '\Drupal\comment\Controller\CommentController::renderNewCommentsNodeLinks'
   requirements:
diff --git a/core/modules/config/config.routing.yml b/core/modules/config/config.routing.yml
index f4c60df..3a89899 100644
--- a/core/modules/config/config.routing.yml
+++ b/core/modules/config/config.routing.yml
@@ -1,33 +1,33 @@
 config.diff:
-  pattern: '/admin/config/development/sync/diff/{config_file}'
+  path:  '/admin/config/development/sync/diff/{config_file}'
   defaults:
     _content: '\Drupal\config\Controller\ConfigController::diff'
   requirements:
     _permission: 'synchronize configuration'
 
 config.export_download:
-  pattern: '/admin/config/development/export-download'
+  path:  '/admin/config/development/export-download'
   defaults:
     _controller: '\Drupal\config\Controller\ConfigController::downloadExport'
   requirements:
     _permission: 'export configuration'
 
 config.export:
-  pattern: '/admin/config/development/export'
+  path:  '/admin/config/development/export'
   defaults:
     _form: '\Drupal\config\Form\ConfigExportForm'
   requirements:
     _permission: 'export configuration'
 
 config.import:
-  pattern: '/admin/config/development/import'
+  path:  '/admin/config/development/import'
   defaults:
     _form: '\Drupal\config\Form\ConfigImportForm'
   requirements:
     _permission: 'import configuration'
 
 config.sync:
-  pattern: '/admin/config/development/sync'
+  path:  '/admin/config/development/sync'
   defaults:
     _form: '\Drupal\config\Form\ConfigSync'
   requirements:
diff --git a/core/modules/config/tests/config_test/config_test.routing.yml b/core/modules/config/tests/config_test/config_test.routing.yml
index bd2c549..60552aa 100644
--- a/core/modules/config/tests/config_test/config_test.routing.yml
+++ b/core/modules/config/tests/config_test/config_test.routing.yml
@@ -1,19 +1,19 @@
 config_test.list_page:
-  pattern: '/admin/structure/config_test'
+  path:  '/admin/structure/config_test'
   defaults:
     _entity_list: 'config_test'
   requirements:
     _access: 'TRUE'
 
 config_test.entity_add:
-  pattern: 'admin/structure/config_test/add'
+  path:  'admin/structure/config_test/add'
   defaults:
     _entity_form: 'config_test'
   requirements:
     _access: 'TRUE'
 
 config_test.entity:
-  pattern: 'admin/structure/config_test/manage/{config_test}'
+  path:  'admin/structure/config_test/manage/{config_test}'
   defaults:
     _controller: '\Drupal\config_test\ConfigTestController::edit'
     entity_type: 'config_test'
@@ -21,7 +21,7 @@ config_test.entity:
     _access: 'TRUE'
 
 config_test.entity_enable:
-  pattern: 'admin/structure/config_test/manage/{config_test}/enable'
+  path:  'admin/structure/config_test/manage/{config_test}/enable'
   defaults:
     _content: '\Drupal\config_test\ConfigTestController::enable'
     entity_type: 'config_test'
@@ -29,7 +29,7 @@ config_test.entity_enable:
     _access: 'TRUE'
 
 config_test.entity_disable:
-  pattern: 'admin/structure/config_test/manage/{config_test}/disable'
+  path:  'admin/structure/config_test/manage/{config_test}/disable'
   defaults:
     _content: '\Drupal\config_test\ConfigTestController::disable'
     entity_type: 'config_test'
@@ -37,7 +37,7 @@ config_test.entity_disable:
     _access: 'TRUE'
 
 config_test.entity_delete:
-  pattern: 'admin/structure/config_test/manage/{config_test}/delete'
+  path:  'admin/structure/config_test/manage/{config_test}/delete'
   defaults:
     _entity_form: 'config_test.delete'
     entity_type: 'config_test'
diff --git a/core/modules/contact/contact.routing.yml b/core/modules/contact/contact.routing.yml
index eb029b8..5800615 100644
--- a/core/modules/contact/contact.routing.yml
+++ b/core/modules/contact/contact.routing.yml
@@ -1,26 +1,26 @@
 contact.category_delete:
-  pattern: 'admin/structure/contact/manage/{contact_category}/delete'
+  path:  'admin/structure/contact/manage/{contact_category}/delete'
   defaults:
     _entity_form: contact_category.delete
   requirements:
     _entity_access: contact_category.delete
 
 contact.category_list:
-  pattern: '/admin/structure/contact'
+  path:  '/admin/structure/contact'
   defaults:
     _entity_list: 'contact_category'
   requirements:
     _permission: 'administer contact forms'
 
 contact.category_add:
-  pattern: '/admin/structure/contact/add'
+  path:  '/admin/structure/contact/add'
   defaults:
     _entity_form: contact_category.add
   requirements:
     _permission: 'administer contact forms'
 
 contact.category_edit:
-  pattern: '/admin/structure/contact/manage/{contact_category}'
+  path:  '/admin/structure/contact/manage/{contact_category}'
   defaults:
     _entity_form: contact_category.edit
   requirements:
diff --git a/core/modules/content_translation/content_translation.routing.yml b/core/modules/content_translation/content_translation.routing.yml
index 4a0ec4e..0aac085 100644
--- a/core/modules/content_translation/content_translation.routing.yml
+++ b/core/modules/content_translation/content_translation.routing.yml
@@ -1,5 +1,5 @@
 content_translation.translatable:
-  pattern: 'admin/config/regional/content_translation/translatable/{entity_type}/{field_name}'
+  path:  'admin/config/regional/content_translation/translatable/{entity_type}/{field_name}'
   defaults:
     _form: 'Drupal\content_translation\Form\TranslatableForm'
   requirements:
diff --git a/core/modules/contextual/contextual.routing.yml b/core/modules/contextual/contextual.routing.yml
index 73ee8e1..afd2d41 100644
--- a/core/modules/contextual/contextual.routing.yml
+++ b/core/modules/contextual/contextual.routing.yml
@@ -1,5 +1,5 @@
 contextual.render:
-  pattern: '/contextual/render'
+  path:  '/contextual/render'
   defaults:
     _controller: '\Drupal\contextual\ContextualController::render'
   requirements:
diff --git a/core/modules/dblog/dblog.routing.yml b/core/modules/dblog/dblog.routing.yml
index 067109b..ebdaf9f 100644
--- a/core/modules/dblog/dblog.routing.yml
+++ b/core/modules/dblog/dblog.routing.yml
@@ -1,12 +1,12 @@
 dblog.overview:
-  pattern: '/admin/reports/dblog'
+  path:  '/admin/reports/dblog'
   defaults:
     _content: '\Drupal\dblog\Controller\DbLogController::overview'
   requirements:
     _permission: 'access site reports'
 
 dblog.event:
-  pattern: 'admin/reports/event/{event_id}'
+  path:  'admin/reports/event/{event_id}'
   defaults:
     _content: '\Drupal\dblog\Controller\DbLogController::eventDetails'
   requirements:
diff --git a/core/modules/edit/edit.routing.yml b/core/modules/edit/edit.routing.yml
index 983a55e..7e893f7 100644
--- a/core/modules/edit/edit.routing.yml
+++ b/core/modules/edit/edit.routing.yml
@@ -1,19 +1,19 @@
 edit.metadata:
-  pattern: '/edit/metadata'
+  path:  '/edit/metadata'
   defaults:
     _controller: '\Drupal\edit\EditController::metadata'
   requirements:
     _permission: 'access in-place editing'
 
 edit.attachments:
-  pattern: '/edit/attachments'
+  path:  '/edit/attachments'
   defaults:
     _controller: '\Drupal\edit\EditController::attachments'
   requirements:
     _permission: 'access in-place editing'
 
 edit.field_form:
-  pattern: '/edit/form/{entity_type}/{entity}/{field_name}/{langcode}/{view_mode_id}'
+  path:  '/edit/form/{entity_type}/{entity}/{field_name}/{langcode}/{view_mode_id}'
   defaults:
     _controller: '\Drupal\edit\EditController::fieldForm'
   options:
@@ -23,7 +23,7 @@ edit.field_form:
     _access_edit_entity_field: 'TRUE'
 
 edit.entity_save:
-  pattern: '/edit/entity/{entity_type}/{entity}'
+  path:  '/edit/entity/{entity_type}/{entity}'
   defaults:
     _controller: '\Drupal\edit\EditController::entitySave'
   options:
diff --git a/core/modules/editor/editor.routing.yml b/core/modules/editor/editor.routing.yml
index 6004868..e99a0a7 100644
--- a/core/modules/editor/editor.routing.yml
+++ b/core/modules/editor/editor.routing.yml
@@ -1,5 +1,5 @@
 editor.field_untransformed_text:
-  pattern: '/editor/{entity_type}/{entity}/{field_name}/{langcode}/{view_mode_id}'
+  path:  '/editor/{entity_type}/{entity}/{field_name}/{langcode}/{view_mode_id}'
   defaults:
     _controller: '\Drupal\editor\EditorController::getUntransformedText'
   options:
@@ -9,14 +9,14 @@ editor.field_untransformed_text:
     _access_edit_entity_field: 'TRUE'
 
 editor.image_dialog:
-  pattern: '/editor/dialog/image/{filter_format}'
+  path:  '/editor/dialog/image/{filter_format}'
   defaults:
     _form: '\Drupal\editor\Form\EditorImageDialog'
   requirements:
     _entity_access: 'filter_format.view'
 
 editor.link_dialog:
-  pattern: '/editor/dialog/link/{filter_format}'
+  path:  '/editor/dialog/link/{filter_format}'
   defaults:
     _form: '\Drupal\editor\Form\EditorLinkDialog'
   requirements:
diff --git a/core/modules/entity/entity.routing.yml b/core/modules/entity/entity.routing.yml
index e7ace5f..de77a94 100644
--- a/core/modules/entity/entity.routing.yml
+++ b/core/modules/entity/entity.routing.yml
@@ -1,75 +1,75 @@
 entity.display_mode:
-  pattern: '/admin/structure/display-modes'
+  path:  '/admin/structure/display-modes'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'administer display modes'
 
 entity.view_mode_list:
-  pattern: '/admin/structure/display-modes/view'
+  path:  '/admin/structure/display-modes/view'
   defaults:
     _entity_list: 'view_mode'
   requirements:
     _permission: 'administer display modes'
 
 entity.view_mode_add:
-  pattern: '/admin/structure/display-modes/view/add'
+  path:  '/admin/structure/display-modes/view/add'
   defaults:
     _content: '\Drupal\entity\Controller\EntityDisplayModeController::viewModeTypeSelection'
   requirements:
     _permission: 'administer display modes'
 
 entity.view_mode_add_type:
-  pattern: '/admin/structure/display-modes/view/add/{entity_type}'
+  path:  '/admin/structure/display-modes/view/add/{entity_type}'
   defaults:
     _entity_form: 'view_mode.add'
   requirements:
     _permission: 'administer display modes'
 
 entity.view_mode_edit:
-  pattern: '/admin/structure/display-modes/view/manage/{view_mode}'
+  path:  '/admin/structure/display-modes/view/manage/{view_mode}'
   defaults:
     _entity_form: 'view_mode.edit'
   requirements:
     _entity_access: 'view_mode.update'
 
 entity.view_mode_delete:
-  pattern: '/admin/structure/display-modes/view/manage/{view_mode}/delete'
+  path:  '/admin/structure/display-modes/view/manage/{view_mode}/delete'
   defaults:
     _entity_form: 'view_mode.delete'
   requirements:
     _entity_access: 'view_mode.delete'
 
 entity.form_mode_list:
-  pattern: '/admin/structure/display-modes/form'
+  path:  '/admin/structure/display-modes/form'
   defaults:
     _entity_list: 'form_mode'
   requirements:
     _permission: 'administer display modes'
 
 entity.form_mode_add:
-  pattern: '/admin/structure/display-modes/form/add'
+  path:  '/admin/structure/display-modes/form/add'
   defaults:
     _content: '\Drupal\entity\Controller\EntityDisplayModeController::formModeTypeSelection'
   requirements:
     _permission: 'administer display modes'
 
 entity.form_mode_add_type:
-  pattern: '/admin/structure/display-modes/form/add/{entity_type}'
+  path:  '/admin/structure/display-modes/form/add/{entity_type}'
   defaults:
     _entity_form: 'form_mode.add'
   requirements:
     _permission: 'administer display modes'
 
 entity.form_mode_edit:
-  pattern: '/admin/structure/display-modes/form/manage/{form_mode}'
+  path:  '/admin/structure/display-modes/form/manage/{form_mode}'
   defaults:
     _entity_form: 'form_mode.edit'
   requirements:
     _entity_access: 'form_mode.update'
 
 entity.form_mode_delete:
-  pattern: '/admin/structure/display-modes/form/manage/{form_mode}/delete'
+  path:  '/admin/structure/display-modes/form/manage/{form_mode}/delete'
   defaults:
     _entity_form: 'form_mode.delete'
   requirements:
diff --git a/core/modules/entity_reference/entity_reference.routing.yml b/core/modules/entity_reference/entity_reference.routing.yml
index e0b23b8..702e361 100644
--- a/core/modules/entity_reference/entity_reference.routing.yml
+++ b/core/modules/entity_reference/entity_reference.routing.yml
@@ -1,5 +1,5 @@
 entity_reference.autocomplete:
-  pattern: '/entity_reference/autocomplete/{type}/{field_name}/{entity_type}/{bundle_name}/{entity_id}'
+  path:  '/entity_reference/autocomplete/{type}/{field_name}/{entity_type}/{bundle_name}/{entity_id}'
   defaults:
     _controller: '\Drupal\entity_reference\EntityReferenceController::handleAutocomplete'
     entity_id: 'NULL'
diff --git a/core/modules/field_ui/field_ui.routing.yml b/core/modules/field_ui/field_ui.routing.yml
index 0520a44..ee2a973 100644
--- a/core/modules/field_ui/field_ui.routing.yml
+++ b/core/modules/field_ui/field_ui.routing.yml
@@ -1,5 +1,5 @@
 field_ui.list:
-  pattern: 'admin/reports/fields'
+  path:  'admin/reports/fields'
   defaults:
     _entity_list: 'field_entity'
   requirements:
diff --git a/core/modules/file/file.routing.yml b/core/modules/file/file.routing.yml
index a972dc6..54d9b8c 100644
--- a/core/modules/file/file.routing.yml
+++ b/core/modules/file/file.routing.yml
@@ -1,12 +1,12 @@
 file.ajax_upload:
-  pattern: '/file/ajax'
+  path:  '/file/ajax'
   defaults:
     _controller: '\Drupal\file\Controller\FileWidgetAjaxController::upload'
   requirements:
     _permission: 'access content'
 
 file.ajax_progress:
-  pattern: '/file/progress'
+  path:  '/file/progress'
   defaults:
     _controller: '\Drupal\file\Controller\FileWidgetAjaxController::progress'
   requirements:
diff --git a/core/modules/file/tests/file_test/file_test.routing.yml b/core/modules/file/tests/file_test/file_test.routing.yml
index 81fd186..256d95c 100644
--- a/core/modules/file/tests/file_test/file_test.routing.yml
+++ b/core/modules/file/tests/file_test/file_test.routing.yml
@@ -1,5 +1,5 @@
 file.test:
-  pattern: '/file-test/upload'
+  path:  '/file-test/upload'
   defaults:
     _form: 'Drupal\file_test\Form\FileTestForm'
   requirements:
diff --git a/core/modules/filter/filter.routing.yml b/core/modules/filter/filter.routing.yml
index 448be94..d536740 100644
--- a/core/modules/filter/filter.routing.yml
+++ b/core/modules/filter/filter.routing.yml
@@ -1,19 +1,19 @@
 filter.tips_all:
-  pattern: '/filter/tips'
+  path:  '/filter/tips'
   defaults:
     _content: '\Drupal\filter\Controller\FilterController::filterTips'
   requirements:
     _access: 'TRUE'
 
 filter.tips:
-  pattern: '/filter/tips/{filter_format}'
+  path:  '/filter/tips/{filter_format}'
   defaults:
     _content: '\Drupal\filter\Controller\FilterController::filterTips'
   requirements:
     _entity_access: 'filter_format.view'
 
 filter.admin_overview:
-  pattern: '/admin/config/content/formats'
+  path:  '/admin/config/content/formats'
   defaults:
     _content: '\Drupal\Core\Entity\Controller\EntityListController::listing'
     entity_type: 'filter_format'
@@ -21,21 +21,21 @@ filter.admin_overview:
     _permission: 'administer filters'
 
 filter.format_add:
-  pattern: '/admin/config/content/formats/add'
+  path:  '/admin/config/content/formats/add'
   defaults:
     _entity_form: filter_format.add
   requirements:
     _permission: 'administer filters'
 
 filter.format_edit:
-  pattern: '/admin/config/content/formats/manage/{filter_format}'
+  path:  '/admin/config/content/formats/manage/{filter_format}'
   defaults:
     _entity_form: filter_format.edit
   requirements:
     _permission: 'administer filters'
 
 filter.admin_disable:
-  pattern: '/admin/config/content/formats/manage/{filter_format}/disable'
+  path:  '/admin/config/content/formats/manage/{filter_format}/disable'
   defaults:
     _entity_form: 'filter_format.disable'
   options:
diff --git a/core/modules/forum/forum.routing.yml b/core/modules/forum/forum.routing.yml
index 75bd0db..3dc2527 100644
--- a/core/modules/forum/forum.routing.yml
+++ b/core/modules/forum/forum.routing.yml
@@ -1,61 +1,61 @@
 forum.delete:
-  pattern: '/admin/structure/forum/delete/forum/{taxonomy_term}'
+  path:  '/admin/structure/forum/delete/forum/{taxonomy_term}'
   defaults:
     _form: '\Drupal\forum\Form\DeleteForm'
   requirements:
     _permission: 'administer forums'
 
 forum.settings:
-  pattern: '/admin/structure/forum/settings'
+  path:  '/admin/structure/forum/settings'
   defaults:
     _form: '\Drupal\forum\ForumSettingsForm'
   requirements:
     _permission: 'administer forums'
 
 forum.index:
-  pattern: '/forum'
+  path:  '/forum'
   defaults:
     _content: '\Drupal\forum\Controller\ForumController::forumIndex'
   requirements:
     _permission: 'access content'
 
 forum.page:
-  pattern: '/forum/{taxonomy_term}'
+  path:  '/forum/{taxonomy_term}'
   defaults:
     _content: '\Drupal\forum\Controller\ForumController::forumPage'
   requirements:
     _permission: 'access content'
 
 forum.add_container:
-  pattern: '/admin/structure/forum/add/container'
+  path:  '/admin/structure/forum/add/container'
   defaults:
     _content: '\Drupal\forum\Controller\ForumController::addContainer'
   requirements:
     _permission: 'administer forums'
 
 forum.add_forum:
-  pattern: '/admin/structure/forum/add/forum'
+  path:  '/admin/structure/forum/add/forum'
   defaults:
     _content: '\Drupal\forum\Controller\ForumController::addForum'
   requirements:
     _permission: 'administer forums'
 
 forum.edit_container:
-  pattern: '/admin/structure/forum/edit/container/{taxonomy_term}'
+  path:  '/admin/structure/forum/edit/container/{taxonomy_term}'
   defaults:
     _entity_form: 'taxonomy_term.container'
   requirements:
     _permission: 'administer forums'
 
 forum.edit_forum:
-  pattern: '/admin/structure/forum/edit/forum/{taxonomy_term}'
+  path:  '/admin/structure/forum/edit/forum/{taxonomy_term}'
   defaults:
     _entity_form: 'taxonomy_term.forum'
   requirements:
     _permission: 'administer forums'
 
 forum.overview:
-  pattern: '/admin/structure/forum'
+  path:  '/admin/structure/forum'
   defaults:
     _form: '\Drupal\forum\Form\Overview'
   requirements:
diff --git a/core/modules/help/help.routing.yml b/core/modules/help/help.routing.yml
index bc575bc..fbb5a98 100644
--- a/core/modules/help/help.routing.yml
+++ b/core/modules/help/help.routing.yml
@@ -1,12 +1,12 @@
 help.main:
-  pattern: 'admin/help'
+  path:  'admin/help'
   defaults:
     _content: '\Drupal\help\Controller\HelpController::helpMain'
   requirements:
     _permission: 'access administration pages'
 
 help.page:
-  pattern: 'admin/help/{name}'
+  path:  'admin/help/{name}'
   defaults:
     _content: '\Drupal\help\Controller\HelpController::helpPage'
   requirements:
diff --git a/core/modules/history/history.routing.yml b/core/modules/history/history.routing.yml
index 7ffd289..5a35132 100644
--- a/core/modules/history/history.routing.yml
+++ b/core/modules/history/history.routing.yml
@@ -1,12 +1,12 @@
 history.get_last_node_view:
-  pattern: '/history/get_node_read_timestamps'
+  path:  '/history/get_node_read_timestamps'
   defaults:
     _controller: '\Drupal\history\Controller\HistoryController::getNodeReadTimestamps'
   requirements:
     _permission: 'access content'
 
 history.read_node:
-  pattern: '/history/{node}/read'
+  path:  '/history/{node}/read'
   defaults:
     _controller: '\Drupal\history\Controller\HistoryController::readNode'
   requirements:
diff --git a/core/modules/image/image.routing.yml b/core/modules/image/image.routing.yml
index c28a48d..f5badae 100644
--- a/core/modules/image/image.routing.yml
+++ b/core/modules/image/image.routing.yml
@@ -1,54 +1,54 @@
 image.style_add:
-  pattern: '/admin/config/media/image-styles/add'
+  path:  '/admin/config/media/image-styles/add'
   defaults:
     _entity_form: image_style.add
   requirements:
     _permission: 'administer image styles'
 
 image.style_edit:
-  pattern: '/admin/config/media/image-styles/manage/{image_style}'
+  path:  '/admin/config/media/image-styles/manage/{image_style}'
   defaults:
     _entity_form: image_style.edit
   requirements:
     _permission: 'administer image styles'
 
 image.style_delete:
-  pattern: 'admin/config/media/image-styles/manage/{image_style}/delete'
+  path:  'admin/config/media/image-styles/manage/{image_style}/delete'
   defaults:
     _entity_form: 'image_style.delete'
   requirements:
     _permission: 'administer image styles'
 
 image.effect_delete:
-  pattern: 'admin/config/media/image-styles/manage/{image_style}/effects/{image_effect}/delete'
+  path:  'admin/config/media/image-styles/manage/{image_style}/effects/{image_effect}/delete'
   defaults:
     _form: '\Drupal\image\Form\ImageEffectDeleteForm'
   requirements:
     _permission: 'administer image styles'
 
 image.style_list:
-  pattern: '/admin/config/media/image-styles'
+  path:  '/admin/config/media/image-styles'
   defaults:
     _entity_list: 'image_style'
   requirements:
     _permission: 'administer image styles'
 
 image.style_private:
-  pattern: '/system/files/styles/{image_style}/{scheme}'
+  path:  '/system/files/styles/{image_style}/{scheme}'
   defaults:
     _controller:  '\Drupal\image\Controller\ImageStyleDownloadController::deliver'
   requirements:
     _access: 'TRUE'
 
 image.effect_add_form:
-  pattern: '/admin/config/media/image-styles/manage/{image_style}/add/{image_effect}'
+  path:  '/admin/config/media/image-styles/manage/{image_style}/add/{image_effect}'
   defaults:
     _form: '\Drupal\image\Form\ImageEffectAddForm'
   requirements:
     _permission: 'administer image styles'
 
 image.effect_edit_form:
-  pattern: '/admin/config/media/image-styles/manage/{image_style}/effects/{image_effect}'
+  path:  '/admin/config/media/image-styles/manage/{image_style}/effects/{image_effect}'
   defaults:
     _form: '\Drupal\image\Form\ImageEffectEditForm'
   requirements:
diff --git a/core/modules/language/language.routing.yml b/core/modules/language/language.routing.yml
index f79da8d..9e78be1 100644
--- a/core/modules/language/language.routing.yml
+++ b/core/modules/language/language.routing.yml
@@ -1,54 +1,54 @@
 language.negotiation_url:
-  pattern: '/admin/config/regional/language/detection/url'
+  path:  '/admin/config/regional/language/detection/url'
   defaults:
     _form: 'Drupal\language\Form\NegotiationUrlForm'
   requirements:
     _permission: 'administer languages'
 
 language.negotiation_session:
-  pattern: '/admin/config/regional/language/detection/session'
+  path:  '/admin/config/regional/language/detection/session'
   defaults:
     _form: 'Drupal\language\Form\NegotiationSessionForm'
   requirements:
     _permission: 'administer languages'
 
 language.negotiation_selected:
-  pattern: '/admin/config/regional/language/detection/selected'
+  path:  '/admin/config/regional/language/detection/selected'
   defaults:
     _form: 'Drupal\language\Form\NegotiationSelectedForm'
   requirements:
     _permission: 'administer languages'
 
 language.add:
-  pattern: '/admin/config/regional/language/add'
+  path:  '/admin/config/regional/language/add'
   defaults:
     _entity_form: 'language_entity.add'
   requirements:
     _entity_create_access: 'language_entity'
 
 language.edit:
-  pattern: '/admin/config/regional/language/edit/{language_entity}'
+  path:  '/admin/config/regional/language/edit/{language_entity}'
   defaults:
     _entity_form: 'language_entity.edit'
   requirements:
     _entity_access: 'language_entity.update'
 
 language.admin_overview:
-  pattern: '/admin/config/regional/language'
+  path:  '/admin/config/regional/language'
   defaults:
     _entity_list: 'language_entity'
   requirements:
     _permission: 'administer languages'
 
 language.delete:
-  pattern: '/admin/config/regional/language/delete/{language_entity}'
+  path:  '/admin/config/regional/language/delete/{language_entity}'
   defaults:
     _entity_form: 'language_entity.delete'
   requirements:
     _entity_access: 'language_entity.delete'
 
 language.negotiation_browser:
-  pattern: '/admin/config/regional/language/detection/browser'
+  path:  '/admin/config/regional/language/detection/browser'
   defaults:
     _form: '\Drupal\language\Form\NegotiationBrowserForm'
     _title: 'Browser language detection configuration'
@@ -56,7 +56,7 @@ language.negotiation_browser:
     _permission: 'administer languages'
 
 language.negotiation_browser_delete:
-  pattern: 'admin/config/regional/language/detection/browser/delete/{browser_langcode}'
+  path:  'admin/config/regional/language/detection/browser/delete/{browser_langcode}'
   defaults:
     _form: '\Drupal\language\Form\NegotiationBrowserDeleteForm'
   requirements:
diff --git a/core/modules/language/tests/language_test/language_test.routing.yml b/core/modules/language/tests/language_test/language_test.routing.yml
index 6ed2138..ccd13f7 100644
--- a/core/modules/language/tests/language_test/language_test.routing.yml
+++ b/core/modules/language/tests/language_test/language_test.routing.yml
@@ -1,12 +1,12 @@
 language_test.l_active_class:
-  pattern: '/language_test/type-link-active-class'
+  path:  '/language_test/type-link-active-class'
   defaults:
     _content: '\Drupal\language_test\Controller\LanguageTestController::typeLinkActiveClass'
   requirements:
     _access: 'TRUE'
 
 language_test.subrequest:
-  pattern: '/language_test/subrequest'
+  path:  '/language_test/subrequest'
   defaults:
     _controller: '\Drupal\language_test\Controller\LanguageTestController::testSubRequest'
   requirements:
diff --git a/core/modules/locale/locale.routing.yml b/core/modules/locale/locale.routing.yml
index cbbfc00..5b4417d 100644
--- a/core/modules/locale/locale.routing.yml
+++ b/core/modules/locale/locale.routing.yml
@@ -1,19 +1,19 @@
 locale.settings:
-  pattern: '/admin/config/regional/translate/settings'
+  path:  '/admin/config/regional/translate/settings'
   defaults:
     _form: 'Drupal\locale\Form\LocaleSettingsForm'
   requirements:
     _permission: 'translate interface'
 
 locale.check_translation:
-  pattern: '/admin/reports/translations/check'
+  path:  '/admin/reports/translations/check'
   defaults:
     _controller: 'Drupal\locale\Controller\LocaleController::checkTranslation'
   requirements:
     _permission: 'translate interface'
 
 locale.translate_page:
-  pattern: '/admin/config/regional/translate'
+  path:  '/admin/config/regional/translate'
   defaults:
     _content: 'Drupal\locale\Controller\LocaleController::translatePage'
   requirements:
diff --git a/core/modules/menu/menu.routing.yml b/core/modules/menu/menu.routing.yml
index 7d0ac81..5db6932 100644
--- a/core/modules/menu/menu.routing.yml
+++ b/core/modules/menu/menu.routing.yml
@@ -1,68 +1,68 @@
 menu.settings:
-  pattern: '/admin/structure/menu/settings'
+  path:  '/admin/structure/menu/settings'
   defaults:
     _form: 'Drupal\menu\MenuSettingsForm'
   requirements:
     _permission: 'administer menu'
 
 menu.overview_page:
-  pattern: '/admin/structure/menu'
+  path:  '/admin/structure/menu'
   defaults:
     _entity_list: 'menu'
   requirements:
     _permission: 'administer menu'
 
 menu.parent_options_js:
-  pattern: '/admin/structure/menu/parents'
+  path:  '/admin/structure/menu/parents'
   defaults:
     _controller: '\Drupal\menu\Controller\MenuController::getParentOptions'
   requirements:
     _permission: 'administer menu'
 
 menu.link_add:
-  pattern: '/admin/structure/menu/manage/{menu}/add'
+  path:  '/admin/structure/menu/manage/{menu}/add'
   defaults:
     _content: '\Drupal\menu\Controller\MenuController::addLink'
   requirements:
     _entity_create_access: 'menu_link'
 
 menu.link_edit:
-  pattern: '/admin/structure/menu/item/{menu_link}/edit'
+  path:  '/admin/structure/menu/item/{menu_link}/edit'
   defaults:
     _entity_form: 'menu_link'
   requirements:
     _entity_access: 'menu_link.update'
 
 menu.link_reset:
-  pattern: 'admin/structure/menu/item/{menu_link}/reset'
+  path:  'admin/structure/menu/item/{menu_link}/reset'
   defaults:
     _entity_form: 'menu_link.reset'
   requirements:
     _entity_access: 'menu_link.reset'
 
 menu.link_delete:
-  pattern: 'admin/structure/menu/item/{menu_link}/delete'
+  path:  'admin/structure/menu/item/{menu_link}/delete'
   defaults:
     _entity_form: 'menu_link.delete'
   requirements:
     _entity_access: 'menu_link.delete'
 
 menu.menu_add:
-  pattern: '/admin/structure/menu/add'
+  path:  '/admin/structure/menu/add'
   defaults:
     _entity_form: 'menu.add'
   requirements:
     _entity_create_access: 'menu'
 
 menu.menu_edit:
-  pattern: '/admin/structure/menu/manage/{menu}'
+  path:  '/admin/structure/menu/manage/{menu}'
   defaults:
     _entity_form: 'menu.edit'
   requirements:
     _entity_access: 'menu.update'
 
 menu.delete_menu:
-  pattern: 'admin/structure/menu/manage/{menu}/delete'
+  path:  'admin/structure/menu/manage/{menu}/delete'
   defaults:
     _entity_form: 'menu.delete'
   requirements:
diff --git a/core/modules/node/node.routing.yml b/core/modules/node/node.routing.yml
index 10141ec..d06d78e 100644
--- a/core/modules/node/node.routing.yml
+++ b/core/modules/node/node.routing.yml
@@ -1,40 +1,40 @@
 node.multiple_delete_confirm:
-  pattern: '/admin/content/node/delete'
+  path:  '/admin/content/node/delete'
   defaults:
     _form: '\Drupal\node\Form\DeleteMultiple'
   requirements:
     _permission: 'administer nodes'
 
 node.page_edit:
-  pattern: '/node/{node}/edit'
+  path:  '/node/{node}/edit'
   defaults:
     _entity_form: 'node.edit'
   requirements:
     _entity_access: 'node.update'
 
 node.delete_confirm:
-  pattern: '/node/{node}/delete'
+  path:  '/node/{node}/delete'
   defaults:
     _entity_form: 'node.delete'
   requirements:
     _entity_access: 'node.delete'
 
 node.revision_revert_confirm:
-  pattern: '/node/{node}/revisions/{node_revision}/revert'
+  path:  '/node/{node}/revisions/{node_revision}/revert'
   defaults:
     _form: '\Drupal\node\Form\NodeRevisionRevertForm'
   requirements:
     _access_node_revision: 'update'
 
 node.revision_delete_confirm:
-  pattern: '/node/{node}/revisions/{node_revision}/delete'
+  path:  '/node/{node}/revisions/{node_revision}/delete'
   defaults:
     _form: '\Drupal\node\Form\NodeRevisionDeleteForm'
   requirements:
     _access_node_revision: 'delete'
 
 node.overview_types:
-  pattern: '/admin/structure/types'
+  path:  '/admin/structure/types'
   defaults:
     _content: '\Drupal\Core\Entity\Controller\EntityListController::listing'
     entity_type: 'node_type'
@@ -42,28 +42,28 @@ node.overview_types:
     _permission: 'administer content types'
 
 node.type_add:
-  pattern: '/admin/structure/types/add'
+  path:  '/admin/structure/types/add'
   defaults:
     _entity_form: 'node_type.add'
   requirements:
     _permission: 'administer content types'
 
 node.type_edit:
-  pattern: '/admin/structure/types/manage/{node_type}'
+  path:  '/admin/structure/types/manage/{node_type}'
   defaults:
     _entity_form: 'node_type.edit'
   requirements:
     _permission: 'administer content types'
 
 node.type_delete_confirm:
-  pattern: '/admin/structure/types/manage/{node_type}/delete'
+  path:  '/admin/structure/types/manage/{node_type}/delete'
   defaults:
     _entity_form: 'node_type.delete'
   requirements:
     _entity_access: 'node_type.delete'
 
 node.configure_rebuild_confirm:
-  pattern: '/admin/reports/status/rebuild'
+  path:  '/admin/reports/status/rebuild'
   defaults:
     _form: 'Drupal\node\Form\RebuildPermissionsForm'
   requirements:
diff --git a/core/modules/overlay/overlay.routing.yml b/core/modules/overlay/overlay.routing.yml
index e75e078..d866e33 100644
--- a/core/modules/overlay/overlay.routing.yml
+++ b/core/modules/overlay/overlay.routing.yml
@@ -1,12 +1,12 @@
 overlay.message:
-  pattern: '/overlay/dismiss-message'
+  path:  '/overlay/dismiss-message'
   defaults:
     _controller: '\Drupal\overlay\Controller\OverlayController::overlayMessage'
   requirements:
     _access_overlay_dismiss_message: 'TRUE'
 
 overlay.ajax:
-  pattern: '/overlay-ajax/{region}'
+  path:  '/overlay-ajax/{region}'
   defaults:
     _controller: '\Drupal\overlay\Controller\OverlayController::regionRender'
   requirements:
diff --git a/core/modules/path/path.routing.yml b/core/modules/path/path.routing.yml
index 44f1fdf..d086e34 100644
--- a/core/modules/path/path.routing.yml
+++ b/core/modules/path/path.routing.yml
@@ -1,5 +1,5 @@
 path.delete:
-  pattern: 'admin/config/search/path/delete/{pid}'
+  path:  'admin/config/search/path/delete/{pid}'
   defaults:
     _form: '\Drupal\path\Form\DeleteForm'
   requirements:
diff --git a/core/modules/picture/picture.routing.yml b/core/modules/picture/picture.routing.yml
index 730f429..636dcbd 100644
--- a/core/modules/picture/picture.routing.yml
+++ b/core/modules/picture/picture.routing.yml
@@ -1,33 +1,33 @@
 picture.mapping_page:
-  pattern: '/admin/config/media/picturemapping'
+  path:  '/admin/config/media/picturemapping'
   defaults:
     _entity_list: 'picture_mapping'
   requirements:
     _permission: 'administer pictures'
 
 picture.mapping_page_add:
-  pattern: '/admin/config/media/picturemapping/add'
+  path:  '/admin/config/media/picturemapping/add'
   defaults:
     _entity_form: 'picture_mapping.add'
   requirements:
     _permission: 'administer pictures'
 
 picture.mapping_page_edit:
-  pattern: '/admin/config/media/picturemapping/{picture_mapping}'
+  path:  '/admin/config/media/picturemapping/{picture_mapping}'
   defaults:
     _entity_form: 'picture_mapping.edit'
   requirements:
     _permission: 'administer pictures'
 
 picture.mapping_page_duplicate:
-  pattern: '/admin/config/media/picturemapping/{picture_mapping}/duplicate'
+  path:  '/admin/config/media/picturemapping/{picture_mapping}/duplicate'
   defaults:
     _entity_form: 'picture_mapping.duplicate'
   requirements:
     _permission: 'administer pictures'
 
 picture.mapping_action_confirm:
-  pattern: '/admin/config/media/picturemapping/{picture_mapping}/delete'
+  path:  '/admin/config/media/picturemapping/{picture_mapping}/delete'
   defaults:
     _entity_form: 'picture_mapping.delete'
   requirements:
diff --git a/core/modules/rest/lib/Drupal/rest/Plugin/ResourceBase.php b/core/modules/rest/lib/Drupal/rest/Plugin/ResourceBase.php
index b829c7c..3c1e9f9 100644
--- a/core/modules/rest/lib/Drupal/rest/Plugin/ResourceBase.php
+++ b/core/modules/rest/lib/Drupal/rest/Plugin/ResourceBase.php
@@ -108,7 +108,7 @@ public function routes() {
           // HTTP Accept headers.
           foreach ($this->serializerFormats as $format_name) {
             // Expose one route per available format.
-            //$format_route = new Route($route->getPattern(), $route->getDefaults(), $route->getRequirements());
+            //$format_route = new Route($route->getPath(), $route->getDefaults(), $route->getRequirements());
             $format_route = clone $route;
             $format_route->addRequirements(array('_format' => $format_name));
             $collection->add("$route_name.$method.$format_name", $format_route);
diff --git a/core/modules/rest/rest.routing.yml b/core/modules/rest/rest.routing.yml
index c7ef69e..f2e8b61 100644
--- a/core/modules/rest/rest.routing.yml
+++ b/core/modules/rest/rest.routing.yml
@@ -1,5 +1,5 @@
 rest.csrftoken:
-  pattern: '/rest/session/token'
+  path:  '/rest/session/token'
   defaults:
     _controller: '\Drupal\rest\RequestHandler::csrfToken'
   requirements:
diff --git a/core/modules/search/search.routing.yml b/core/modules/search/search.routing.yml
index 4a2789f..5111cce 100644
--- a/core/modules/search/search.routing.yml
+++ b/core/modules/search/search.routing.yml
@@ -1,12 +1,12 @@
 search.settings:
-  pattern: '/admin/config/search/settings'
+  path:  '/admin/config/search/settings'
   defaults:
     _form: 'Drupal\search\Form\SearchSettingsForm'
   requirements:
     _permission: 'administer search'
 
 search.reindex_confirm:
-  pattern: '/admin/config/search/settings/reindex'
+  path:  '/admin/config/search/settings/reindex'
   defaults:
     _form: 'Drupal\search\Form\ReindexConfirm'
   requirements:
diff --git a/core/modules/shortcut/shortcut.routing.yml b/core/modules/shortcut/shortcut.routing.yml
index 0745206..94c3e9f 100644
--- a/core/modules/shortcut/shortcut.routing.yml
+++ b/core/modules/shortcut/shortcut.routing.yml
@@ -1,47 +1,47 @@
 shortcut.link_delete:
-  pattern: '/admin/config/user-interface/shortcut/link/{menu_link}/delete'
+  path:  '/admin/config/user-interface/shortcut/link/{menu_link}/delete'
   defaults:
     _form: 'Drupal\shortcut\Form\LinkDelete'
   requirements:
     _access_shortcut_link_delete: 'TRUE'
 
 shortcut.set_delete:
-  pattern: '/admin/config/user-interface/shortcut/manage/{shortcut_set}/delete'
+  path:  '/admin/config/user-interface/shortcut/manage/{shortcut_set}/delete'
   defaults:
     _entity_form: 'shortcut_set.delete'
   requirements:
     _entity_access: 'shortcut_set.delete'
 
 shortcut.set_admin:
-  pattern: '/admin/config/user-interface/shortcut'
+  path:  '/admin/config/user-interface/shortcut'
   defaults:
     _entity_list: 'shortcut_set'
   requirements:
     _permission: 'administer shortcuts'
 
 shortcut.set_add:
-  pattern: '/admin/config/user-interface/shortcut/add-set'
+  path:  '/admin/config/user-interface/shortcut/add-set'
   defaults:
     _entity_form: 'shortcut_set.add'
   requirements:
     _entity_create_access: 'shortcut_set'
 
 shortcut.set_edit:
-  pattern: '/admin/config/user-interface/shortcut/manage/{shortcut_set}/edit'
+  path:  '/admin/config/user-interface/shortcut/manage/{shortcut_set}/edit'
   defaults:
     _entity_form: 'shortcut_set.edit'
   requirements:
     _entity_access: 'shortcut_set.update'
 
 shortcut.link_add_inline:
-  pattern: '/admin/config/user-interface/shortcut/manage/{shortcut_set}/add-link-inline'
+  path:  '/admin/config/user-interface/shortcut/manage/{shortcut_set}/add-link-inline'
   defaults:
     _controller: 'Drupal\shortcut\Controller\ShortcutSetController::addShortcutLinkInline'
   requirements:
     _entity_access: 'shortcut_set.update'
 
 shortcut.set_customize:
-  pattern: '/admin/config/user-interface/shortcut/manage/{shortcut_set}'
+  path:  '/admin/config/user-interface/shortcut/manage/{shortcut_set}'
   defaults:
     _entity_form: 'shortcut_set.customize'
   requirements:
diff --git a/core/modules/simpletest/simpletest.routing.yml b/core/modules/simpletest/simpletest.routing.yml
index 9bf9322..c0e192e 100644
--- a/core/modules/simpletest/simpletest.routing.yml
+++ b/core/modules/simpletest/simpletest.routing.yml
@@ -1,19 +1,19 @@
 simpletest.settings:
-  pattern: '/admin/config/development/testing/settings'
+  path:  '/admin/config/development/testing/settings'
   defaults:
     _form: 'Drupal\simpletest\Form\SimpletestSettingsForm'
   requirements:
     _permission: 'administer unit tests'
 
 simpletest.test_form:
-  pattern: '/admin/config/development/testing'
+  path:  '/admin/config/development/testing'
   defaults:
     _form: '\Drupal\simpletest\Form\SimpletestTestForm'
   requirements:
     _permission: 'administer unit tests'
 
 simpletest.result_form:
-  pattern: '/admin/config/development/testing/results/{test_id}'
+  path:  '/admin/config/development/testing/results/{test_id}'
   defaults:
     _form: 'Drupal\simpletest\Form\SimpletestResultsForm'
   requirements:
diff --git a/core/modules/statistics/statistics.routing.yml b/core/modules/statistics/statistics.routing.yml
index 86499f5..4a7db7c 100644
--- a/core/modules/statistics/statistics.routing.yml
+++ b/core/modules/statistics/statistics.routing.yml
@@ -1,5 +1,5 @@
 statistics.settings:
-  pattern: '/admin/config/system/statistics'
+  path:  '/admin/config/system/statistics'
   defaults:
     _form: 'Drupal\statistics\StatisticsSettingsForm'
   requirements:
diff --git a/core/modules/system/lib/Drupal/system/Tests/Routing/MatcherDumperTest.php b/core/modules/system/lib/Drupal/system/Tests/Routing/MatcherDumperTest.php
index 7f6f312..fcdbbfe 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Routing/MatcherDumperTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Routing/MatcherDumperTest.php
@@ -72,7 +72,7 @@ function testAddRoutes() {
     $collection_routes = $collection->all();
 
     foreach ($dumper_routes as $name => $route) {
-      $this->assertEqual($route->getPattern(), $collection_routes[$name]->getPattern(), 'Routes match');
+      $this->assertEqual($route->getPath(), $collection_routes[$name]->getPath(), 'Routes match');
     }
   }
 
diff --git a/core/modules/system/lib/Drupal/system/Tests/Routing/RouteProviderTest.php b/core/modules/system/lib/Drupal/system/Tests/Routing/RouteProviderTest.php
index 01f651e..4abce63 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Routing/RouteProviderTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Routing/RouteProviderTest.php
@@ -95,7 +95,7 @@ function testExactPathMatch() {
     $routes = $provider->getRouteCollectionForRequest($request);
 
     foreach ($routes as $route) {
-      $this->assertEqual($route->getPattern(), $path, 'Found path has correct pattern');
+      $this->assertEqual($route->getPat(), $path, 'Found path has correct pattern');
     }
   }
 
@@ -358,7 +358,7 @@ function testSystemPathMatch() {
     $this->assertEqual(array_keys($routes_by_pattern->all()), array_keys($routes->all()), 'Ensure the expected routes are found.');
 
     foreach ($routes as $route) {
-      $this->assertEqual($route->getPattern(), '/path/two', 'Found path has correct pattern');
+      $this->assertEqual($route->getPath(), '/path/two', 'Found path has correct pattern');
     }
   }
 
@@ -376,10 +376,10 @@ protected function testRouteByName() {
     $dumper->dump();
 
     $route = $provider->getRouteByName('route_a');
-    $this->assertEqual($route->getPattern(), '/path/one', 'The right route pattern was found.');
+    $this->assertEqual($route->getPath(), '/path/one', 'The right route pattern was found.');
     $this->assertEqual($route->getRequirement('_method'), 'GET', 'The right route method was found.');
     $route = $provider->getRouteByName('route_b');
-    $this->assertEqual($route->getPattern(), '/path/one', 'The right route pattern was found.');
+    $this->assertEqual($route->getPath(), '/path/one', 'The right route pattern was found.');
     $this->assertEqual($route->getRequirement('_method'), 'PUT', 'The right route method was found.');
 
     $exception_thrown = FALSE;
@@ -393,8 +393,8 @@ protected function testRouteByName() {
 
     $routes = $provider->getRoutesByNames(array('route_c', 'route_d', $this->randomName()));
     $this->assertEqual(count($routes), 2, 'Only two valid routes found.');
-    $this->assertEqual($routes['route_c']->getPattern(), '/path/two');
-    $this->assertEqual($routes['route_d']->getPattern(), '/path/three');
+    $this->assertEqual($routes['route_c']->getPath(), '/path/two');
+    $this->assertEqual($routes['route_d']->getPath(), '/path/three');
   }
 
 }
diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index 5222f25..1a39b4c 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -922,8 +922,8 @@ function system_schema() {
         'not null' => TRUE,
         'default' => '',
       ),
-      'pattern' => array(
-        'description' => 'The path pattern for this URI',
+      'path' => array(
+        'description' => 'The path for this URI',
         'type' => 'varchar',
         'length' => 255,
         'not null' => TRUE,
@@ -1580,8 +1580,8 @@ function system_update_8022() {
         'not null' => TRUE,
         'default' => '',
       ),
-      'pattern' => array(
-        'description' => 'The path pattern for this URI',
+      'path' => array(
+        'description' => 'The path for this URI',
         'type' => 'varchar',
         'length' => 255,
         'not null' => TRUE,
diff --git a/core/modules/system/system.routing.yml b/core/modules/system/system.routing.yml
index f8eed28..095df45 100644
--- a/core/modules/system/system.routing.yml
+++ b/core/modules/system/system.routing.yml
@@ -1,103 +1,103 @@
 system.ajax:
-  pattern: '/system/ajax'
+  path:  '/system/ajax'
   defaults:
     _controller: '\Drupal\system\Controller\FormAjaxController::content'
   requirements:
     _access: 'TRUE'
 
 system.admin:
-  pattern: '/admin'
+  path:  '/admin'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access administration pages'
 
 system.admin_structure:
-  pattern: '/admin/structure'
+  path:  '/admin/structure'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access administration pages'
 
 system.admin_reports:
-  pattern: '/admin/reports'
+  path:  '/admin/reports'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access site reports'
 
 system.admin_config_media:
-  pattern: '/admin/config/media'
+  path:  '/admin/config/media'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access administration pages'
 
 system.admin_config_services:
-  pattern: '/admin/config/services'
+  path:  '/admin/config/services'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access administration pages'
 
 system.admin_config_development:
-  pattern: '/admin/config/development'
+  path:  '/admin/config/development'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access administration pages'
 
 system.admin_config_regional:
-  pattern: '/admin/config/regional'
+  path:  '/admin/config/regional'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access administration pages'
 
 system.admin_config_search:
-  pattern: '/admin/config/search'
+  path:  '/admin/config/search'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access administration pages'
 
 system.admin_config_system:
-  pattern: '/admin/config/system'
+  path:  '/admin/config/system'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access administration pages'
 
 system.admin_config_ui:
-  pattern: '/admin/config/user-interface'
+  path:  '/admin/config/user-interface'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access administration pages'
 
 system.admin_config_workflow:
-  pattern: '/admin/config/workflow'
+  path:  '/admin/config/workflow'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access administration pages'
 
 system.admin_config_content:
-  pattern: '/admin/config/content'
+  path:  '/admin/config/content'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access administration pages'
 
 system.cron:
-  pattern: '/cron/{key}'
+  path:  '/cron/{key}'
   defaults:
     _controller: '\Drupal\system\CronController::run'
   requirements:
     _access_system_cron: 'TRUE'
 
 system.admin_compact_page:
-  pattern: '/admin/compact/{mode}'
+  path:  '/admin/compact/{mode}'
   defaults:
     _controller: 'Drupal\system\Controller\SystemController::compactPage'
     mode: 'off'
@@ -105,175 +105,175 @@ system.admin_compact_page:
     _permission: 'access administration pages'
 
 system.machine_name_transliterate:
-  pattern: '/machine_name/transliterate'
+  path:  '/machine_name/transliterate'
   defaults:
     _controller: '\Drupal\system\MachineNameController::transliterate'
   requirements:
     _permission: 'access content'
 
 system.site_information_settings:
-  pattern: '/admin/config/system/site-information'
+  path:  '/admin/config/system/site-information'
   defaults:
     _form: 'Drupal\system\Form\SiteInformationForm'
   requirements:
     _permission: 'administer site configuration'
 
 system.cron_settings:
-  pattern: '/admin/config/system/cron'
+  path:  '/admin/config/system/cron'
   defaults:
     _form: 'Drupal\system\Form\CronForm'
   requirements:
     _permission: 'administer site configuration'
 
 system.logging_settings:
-  pattern: '/admin/config/development/logging'
+  path:  '/admin/config/development/logging'
   defaults:
     _form: 'Drupal\system\Form\LoggingForm'
   requirements:
     _permission: 'administer site configuration'
 
 system.performance_settings:
-  pattern: '/admin/config/development/performance'
+  path:  '/admin/config/development/performance'
   defaults:
     _form: 'Drupal\system\Form\PerformanceForm'
   requirements:
     _permission: 'administer site configuration'
 
 system.file_system_settings:
-  pattern: '/admin/config/media/file-system'
+  path:  '/admin/config/media/file-system'
   defaults:
     _form: 'Drupal\system\Form\FileSystemForm'
   requirements:
     _permission: 'administer site configuration'
 
 system.rss_feeds_settings:
-  pattern: '/admin/config/services/rss-publishing'
+  path:  '/admin/config/services/rss-publishing'
   defaults:
     _form: 'Drupal\system\Form\RssFeedsForm'
   requirements:
     _permission: 'administer site configuration'
 
 system.regional_settings:
-  pattern: '/admin/config/regional/settings'
+  path:  '/admin/config/regional/settings'
   defaults:
     _form: 'Drupal\system\Form\RegionalForm'
   requirements:
     _permission: 'administer site configuration'
 
 system.image_toolkit_settings:
-  pattern: '/admin/config/media/image-toolkit'
+  path:  '/admin/config/media/image-toolkit'
   defaults:
     _form: 'Drupal\system\Form\ImageToolkitForm'
   requirements:
     _permission: 'administer administration pages'
 
 system.site_maintenance_mode:
-  pattern: '/admin/config/development/maintenance'
+  path:  '/admin/config/development/maintenance'
   defaults:
     _form: 'Drupal\system\Form\SiteMaintenanceModeForm'
   requirements:
     _permission: 'administer site configuration'
 
 system.run_cron:
-  pattern: '/admin/reports/status/run-cron'
+  path:  '/admin/reports/status/run-cron'
   defaults:
     _controller: '\Drupal\system\CronController::runManually'
   requirements:
     _permission: 'administer site configuration'
 
 system.date_format_list:
-  pattern: '/admin/config/regional/date-time'
+  path:  '/admin/config/regional/date-time'
   defaults:
     _entity_list: 'date_format'
   requirements:
     _permission: 'administer site configuration'
 
 system.date_format_add:
-  pattern: '/admin/config/regional/date-time/formats/add'
+  path:  '/admin/config/regional/date-time/formats/add'
   defaults:
     _entity_form: 'date_format.add'
   requirements:
     _permission: 'administer site configuration'
 
 system.date_format_edit:
-  pattern: '/admin/config/regional/date-time/formats/manage/{date_format}'
+  path:  '/admin/config/regional/date-time/formats/manage/{date_format}'
   defaults:
     _entity_form: 'date_format.edit'
   requirements:
     _entity_access: 'date_format.update'
 
 system.date_format_language_overview:
-  pattern: '/admin/config/regional/date-time/locale'
+  path:  '/admin/config/regional/date-time/locale'
   defaults:
     _controller: '\Drupal\system\Controller\DateFormatLanguageController::overviewPage'
   requirements:
     _permission: 'administer site configuration'
 
 system.date_format_delete:
-  pattern: 'admin/config/regional/date-time/formats/manage/{date_format}/delete'
+  path:  'admin/config/regional/date-time/formats/manage/{date_format}/delete'
   defaults:
     _entity_form: 'date_format.delete'
   requirements:
     _entity_access: 'date_format.delete'
 
 system.date_format_localize_reset:
-  pattern: 'admin/config/regional/date-time/locale/{langcode}/reset'
+  path:  'admin/config/regional/date-time/locale/{langcode}/reset'
   defaults:
     _form: '\Drupal\system\Form\DateFormatLocalizeResetForm'
   requirements:
     _permission: 'administer site configuration'
 
 system.modules_list:
-  pattern: 'admin/modules'
+  path:  'admin/modules'
   defaults:
     _form: 'Drupal\system\Form\ModulesListForm'
   requirements:
     _permission: 'administer modules'
 
 system.modules_list_confirm:
-  pattern: 'admin/modules/list/confirm'
+  path:  'admin/modules/list/confirm'
   defaults:
     _form: 'Drupal\system\Form\ModulesListConfirmForm'
   requirements:
     _permission: 'administer modules'
 
 system.theme_disable:
-  pattern: '/admin/appearance/disable'
+  path:  '/admin/appearance/disable'
   defaults:
     _controller: 'Drupal\system\Controller\ThemeController::disable'
   requirements:
     _permission: 'administer themes'
 
 system.theme_enable:
-  pattern: '/admin/appearance/enable'
+  path:  '/admin/appearance/enable'
   defaults:
     _controller: 'Drupal\system\Controller\ThemeController::enable'
   requirements:
     _permission: 'administer themes'
 
 system.status:
-  pattern: '/admin/reports/status'
+  path:  '/admin/reports/status'
   defaults:
     _controller: 'Drupal\system\Controller\SystemInfoController::status'
   requirements:
     _permission: 'administer site configuration'
 
 system.php:
-  pattern: '/admin/reports/status/php'
+  path:  '/admin/reports/status/php'
   defaults:
     _controller: 'Drupal\system\Controller\SystemInfoController::php'
   requirements:
     _permission: 'administer site configuration'
 
 system.admin_index:
-  pattern: 'admin/index'
+  path:  'admin/index'
   defaults:
     _content: 'Drupal\system\Controller\AdminController::index'
   requirements:
     _permission: 'access administration pages'
 
 system.files:
-  pattern: '/system/files/{scheme}'
+  path:  '/system/files/{scheme}'
   defaults:
     _controller: 'Drupal\system\FileDownloadController::download'
     scheme: private
@@ -281,47 +281,47 @@ system.files:
     _access: 'TRUE'
 
 system.theme_settings:
-  pattern: '/admin/appearance/settings'
+  path:  '/admin/appearance/settings'
   defaults:
     _form: '\Drupal\system\Form\ThemeSettingsForm'
   requirements:
     _permission: 'administer themes'
 
 '<front>':
-  pattern: '/'
+  path:  '/'
   requirements:
     _access: 'TRUE'
 
 system.modules_uninstall:
-  pattern: 'admin/modules/uninstall'
+  path:  'admin/modules/uninstall'
   defaults:
     _form: 'Drupal\system\Form\ModulesUninstallForm'
   requirements:
     _permission: 'administer modules'
 
 system.modules_uninstall_confirm:
-  pattern: 'admin/modules/uninstall/confirm'
+  path:  'admin/modules/uninstall/confirm'
   defaults:
     _form: 'Drupal\system\Form\ModulesUninstallConfirmForm'
   requirements:
     _permission: 'administer modules'
 
 system.timezone:
-  pattern: '/system/timezone'
+  path:  '/system/timezone'
   defaults:
     _controller: '\Drupal\system\Controller\TimezoneController::getTimezone'
   requirements:
     _access: 'TRUE'
 
 system.admin_config:
-  pattern: '/admin/config'
+  path:  '/admin/config'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::overview'
   requirements:
     _permission: 'access administration pages'
 
 system.batch_page:
-  pattern: '/batch'
+  path:  '/batch'
   defaults:
     _controller: '\Drupal\system\Controller\BatchController::batchPage'
   requirements:
diff --git a/core/modules/system/tests/modules/ajax_test/ajax_test.routing.yml b/core/modules/system/tests/modules/ajax_test/ajax_test.routing.yml
index 7536e1a..1fcfedd 100644
--- a/core/modules/system/tests/modules/ajax_test/ajax_test.routing.yml
+++ b/core/modules/system/tests/modules/ajax_test/ajax_test.routing.yml
@@ -1,12 +1,12 @@
 ajax_test.dialog_contents:
-  pattern: ajax-test/dialog-contents
+  path:  ajax-test/dialog-contents
   defaults:
     _content: '\Drupal\ajax_test\AjaxTestController::dialogContents'
   requirements:
     _access: 'TRUE'
 
 ajax_test.dialog_form:
-  pattern: ajax-test/dialog-form
+  path:  ajax-test/dialog-form
   defaults:
     _form: '\Drupal\ajax_test\AjaxTestForm'
   requirements:
diff --git a/core/modules/system/tests/modules/batch_test/batch_test.routing.yml b/core/modules/system/tests/modules/batch_test/batch_test.routing.yml
index b199525..5dcfcc0 100644
--- a/core/modules/system/tests/modules/batch_test/batch_test.routing.yml
+++ b/core/modules/system/tests/modules/batch_test/batch_test.routing.yml
@@ -1,5 +1,5 @@
 batch_test.redirect:
-  pattern: '/batch-test/redirect'
+  path:  '/batch-test/redirect'
   defaults:
     _content: '\Drupal\batch_test\Controller\BatchTestController::testRedirect'
     _title: 'Redirect'
@@ -7,7 +7,7 @@ batch_test.redirect:
     _access:  'TRUE'
 
 batch_test.large_percentage:
-  pattern: '/batch-test/large-percentage'
+  path:  '/batch-test/large-percentage'
   defaults:
     _content: '\Drupal\batch_test\Controller\BatchTestController::testLargePercentage'
     _title: 'Simple page with batch over 100% complete'
@@ -15,7 +15,7 @@ batch_test.large_percentage:
     _access:  'TRUE'
 
 batch_test.nested_programmatic:
-  pattern: '/batch-test/nested-programmatic/{value}'
+  path:  '/batch-test/nested-programmatic/{value}'
   defaults:
     _content: '\Drupal\batch_test\Controller\BatchTestController::testNestedDrupalFormSubmit'
     _title: 'Nested programmatic'
@@ -24,7 +24,7 @@ batch_test.nested_programmatic:
     _access: 'TRUE'
 
 batch_test.no_form:
-  pattern: '/batch-test/no-form'
+  path:  '/batch-test/no-form'
   defaults:
     _content: '\Drupal\batch_test\Controller\BatchTestController::testNoForm'
     _title: 'Simple page'
@@ -32,7 +32,7 @@ batch_test.no_form:
     _access: 'TRUE'
 
 batch_test.programmatic:
-  pattern: '/batch-test/programmatic/{value}'
+  path:  '/batch-test/programmatic/{value}'
   defaults:
     _content: '\Drupal\batch_test\Controller\BatchTestController::testProgrammatic'
     _title: 'Programmatic'
@@ -41,7 +41,7 @@ batch_test.programmatic:
     _access: 'TRUE'
 
 batch_test.test_theme:
-  pattern: '/admin/batch-test/test-theme'
+  path:  '/admin/batch-test/test-theme'
   defaults:
     _content: '\Drupal\batch_test\Controller\BatchTestController::testThemeBatch'
   requirements:
diff --git a/core/modules/system/tests/modules/common_test/common_test.routing.yml b/core/modules/system/tests/modules/common_test/common_test.routing.yml
index f96c586..96cda9f 100644
--- a/core/modules/system/tests/modules/common_test/common_test.routing.yml
+++ b/core/modules/system/tests/modules/common_test/common_test.routing.yml
@@ -1,19 +1,19 @@
 common_test.l_active_class:
-  pattern: '/common-test/type-link-active-class'
+  path:  '/common-test/type-link-active-class'
   defaults:
     _content: '\Drupal\common_test\Controller\CommonTestController::typeLinkActiveClass'
   requirements:
     _access: 'TRUE'
 
 common_test.destination:
-  pattern: '/common-test/destination'
+  path:  '/common-test/destination'
   defaults:
     _controller: '\Drupal\common_test\Controller\CommonTestController::destination'
   requirements:
     _permission: 'access content'
 
 common_test.drupal_render_invalid_keys:
-  pattern: 'common-test/drupal-render-invalid-keys'
+  path:  'common-test/drupal-render-invalid-keys'
   defaults:
     _title: 'Drupal Render'
     _content: '\Drupal\common_test\Controller\CommonTestController::drupalRenderInvalidKeys'
@@ -21,7 +21,7 @@ common_test.drupal_render_invalid_keys:
     _permission: 'access content'
 
 common_test.js_and_css_querystring:
-  pattern: '/common-test/query-string'
+  path:  '/common-test/query-string'
   defaults:
     _title: 'Test querystring'
     _content: '\Drupal\common_test\Controller\CommonTestController::jsAndCssQuerystring'
diff --git a/core/modules/system/tests/modules/condition_test/condition_test.routing.yml b/core/modules/system/tests/modules/condition_test/condition_test.routing.yml
index bf497e0..141ed95 100644
--- a/core/modules/system/tests/modules/condition_test/condition_test.routing.yml
+++ b/core/modules/system/tests/modules/condition_test/condition_test.routing.yml
@@ -1,5 +1,5 @@
 condition_test.1:
-  pattern: '/condition_test'
+  path:  '/condition_test'
   defaults:
     _form: '\Drupal\condition_test\FormController'
   requirements:
diff --git a/core/modules/system/tests/modules/design_test/design_test.routing.yml b/core/modules/system/tests/modules/design_test/design_test.routing.yml
index 3b1c73e..bc803c2 100644
--- a/core/modules/system/tests/modules/design_test/design_test.routing.yml
+++ b/core/modules/system/tests/modules/design_test/design_test.routing.yml
@@ -1,5 +1,5 @@
 design.test:
-  pattern: '/design_test/{category}'
+  path:  '/design_test/{category}'
   defaults:
     _content: '\Drupal\design_test\Controller\DesignTestController::categoryPage'
     category: 'FALSE'
diff --git a/core/modules/system/tests/modules/entity_test/entity_test.routing.yml b/core/modules/system/tests/modules/entity_test/entity_test.routing.yml
index 4553e61..d2bba23 100644
--- a/core/modules/system/tests/modules/entity_test/entity_test.routing.yml
+++ b/core/modules/system/tests/modules/entity_test/entity_test.routing.yml
@@ -1,12 +1,12 @@
 entity_test.render:
-  pattern: '/entity-test-render/{entity_test_render}'
+  path:  '/entity-test-render/{entity_test_render}'
   defaults:
     _entity_view: 'entity_test_render.full'
   requirements:
     _access: 'TRUE'
 
 entity_test.render_options:
-  pattern: '/entity-test-render-converter/{foo}'
+  path:  '/entity-test-render-converter/{foo}'
   options:
     parameters:
       foo:
@@ -17,7 +17,7 @@ entity_test.render_options:
     _access: 'TRUE'
 
 entity_test.render_no_view_mode:
-  pattern: '/entity-test-render-no-view-mode/{entity_test_render}'
+  path:  '/entity-test-render-no-view-mode/{entity_test_render}'
   defaults:
     _entity_view: 'entity_test_render'
   requirements:
diff --git a/core/modules/system/tests/modules/error_test/error_test.routing.yml b/core/modules/system/tests/modules/error_test/error_test.routing.yml
index 4c9ecdc..1d68cdf 100644
--- a/core/modules/system/tests/modules/error_test/error_test.routing.yml
+++ b/core/modules/system/tests/modules/error_test/error_test.routing.yml
@@ -1,12 +1,12 @@
 error_test.generate_warnings:
-  pattern: '/error-test/generate-warnings'
+  path:  '/error-test/generate-warnings'
   defaults:
     _content: '\Drupal\error_test\Controller\ErrorTestController::generateWarnings'
   requirements:
     _access: 'TRUE'
 
 error_test.generate_warnings_with_report:
-  pattern: '/error-test/generate-warnings-with-report'
+  path:  '/error-test/generate-warnings-with-report'
   defaults:
     _content: '\Drupal\error_test\Controller\ErrorTestController::generateWarnings'
     collect_errors: TRUE
@@ -14,14 +14,14 @@ error_test.generate_warnings_with_report:
     _access: 'TRUE'
 
 error_test.trigger_exception:
-  pattern: '/error-test/trigger-exception'
+  path:  '/error-test/trigger-exception'
   defaults:
     _content: '\Drupal\error_test\Controller\ErrorTestController::triggerException'
   requirements:
     _access: 'TRUE'
 
 error_test.trigger_pdo_exception:
-  pattern: '/error-test/trigger-pdo-exception'
+  path:  '/error-test/trigger-pdo-exception'
   defaults:
     _content: '\Drupal\error_test\Controller\ErrorTestController::triggerPDOException'
   requirements:
diff --git a/core/modules/system/tests/modules/form_test/form_test.routing.yml b/core/modules/system/tests/modules/form_test/form_test.routing.yml
index 34e437d..3c4dabb 100644
--- a/core/modules/system/tests/modules/form_test/form_test.routing.yml
+++ b/core/modules/system/tests/modules/form_test/form_test.routing.yml
@@ -1,68 +1,68 @@
 form_test.route1:
-  pattern: '/form-test/object-builder'
+  path:  '/form-test/object-builder'
   defaults:
     _form: '\Drupal\form_test\FormTestObject'
   requirements:
     _access: 'TRUE'
 
 form_test.route2:
-  pattern: '/form-test/object-arguments-builder/{arg}'
+  path:  '/form-test/object-arguments-builder/{arg}'
   defaults:
     _form: '\Drupal\form_test\FormTestArgumentsObject'
   requirements:
     _access: 'TRUE'
 
 form_test.route3:
-  pattern: '/form-test/object-service-builder'
+  path:  '/form-test/object-service-builder'
   defaults:
     _form: 'form_test.form.serviceForm'
   requirements:
     _access: 'TRUE'
 
 form_test.route4:
-  pattern: '/form-test/object-controller-builder'
+  path:  '/form-test/object-controller-builder'
   defaults:
     _form: '\Drupal\form_test\FormTestControllerObject'
   requirements:
     _access: 'TRUE'
 
 form_test.route5:
-  pattern: '/form-test/system-config-form'
+  path:  '/form-test/system-config-form'
   defaults:
     _form: '\Drupal\form_test\SystemConfigFormTestForm'
   requirements:
     _access: 'TRUE'
 
 form_test.route6:
-  pattern: '/form-test/confirm-form'
+  path:  '/form-test/confirm-form'
   defaults:
     _form: '\Drupal\form_test\ConfirmFormTestForm'
   requirements:
     _access: 'TRUE'
 
 form_test.route7:
-  pattern: '/form-test/confirm-form-array-path'
+  path:  '/form-test/confirm-form-array-path'
   defaults:
     _form: '\Drupal\form_test\ConfirmFormArrayPathTestForm'
   requirements:
     _access: 'TRUE'
 
 form_test.route8:
-  pattern: '/form-test/autocomplete'
+  path:  '/form-test/autocomplete'
   defaults:
     _form: '\Drupal\form_test\FormTestAutocompleteForm'
   requirements:
     _access: 'TRUE'
 
 form_test.autocomplete_1:
-  pattern: '/form-test/autocomplete-1'
+  path:  '/form-test/autocomplete-1'
   defaults:
     controller: '\Drupal\form_test\AutocompleteController::autocomplete1'
   requirements:
     _permission: 'access autocomplete test'
 
 form_test.autocomplete_2:
-  pattern: '/form-test/autocomplete-2/{param}'
+  path:  '/form-test/autocomplete-2/{param}'
   defaults:
     controller: '\Drupal\form_test\AutocompleteController::autocomplete1'
   requirements:
diff --git a/core/modules/system/tests/modules/menu_test/menu_test.routing.yml b/core/modules/system/tests/modules/menu_test/menu_test.routing.yml
index 0168e3d..7033961 100644
--- a/core/modules/system/tests/modules/menu_test/menu_test.routing.yml
+++ b/core/modules/system/tests/modules/menu_test/menu_test.routing.yml
@@ -1,124 +1,124 @@
 menu_test.login_callback:
-  pattern: '/menu_login_callback'
+  path:  '/menu_login_callback'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::testLogin'
   requirements:
     _access: 'TRUE'
 
 menu_test.callback_description:
-  pattern: 'menu_callback_description'
+  path:  'menu_callback_description'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access content'
 
 menu_test.router_test1:
-  pattern: '/foo/{bar}'
+  path:  '/foo/{bar}'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 
 menu_test.router_test2:
-  pattern: '/foo/{bar}/b'
+  path:  '/foo/{bar}/b'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test2'
   requirements:
     _access: 'TRUE'
 
 menu_test.router_test3:
-  pattern: '/foo/{bar}/c'
+  path:  '/foo/{bar}/c'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test2'
   requirements:
     _access: 'FALSE'
 
 menu_test.local_action1:
-  pattern: '/menu-test-local-action'
+  path:  '/menu-test-local-action'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 
 menu_test.local_action2:
-  pattern: '/menu-test-local-action/hook_menu'
+  path:  '/menu-test-local-action/hook_menu'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test2'
   requirements:
     _access: 'TRUE'
 
 menu_test.local_action3:
-  pattern: '/menu-test-local-action/routing'
+  path:  '/menu-test-local-action/routing'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test2'
   requirements:
     _access: 'TRUE'
 
 menu_test.local_action4:
-  pattern: '/menu-test-local-action/dynamic-title'
+  path:  '/menu-test-local-action/dynamic-title'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test2'
   requirements:
     _access: 'TRUE'
 
 menu_test.local_task_test_tasks:
-  pattern: '/menu-local-task-test/tasks'
+  path:  '/menu-local-task-test/tasks'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 
 menu_test.local_task_test_tasks_tasks:
-  pattern: '/menu-local-task-test/tasks/tasks'
+  path:  '/menu-local-task-test/tasks/tasks'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 
 menu_test.local_task_test_tasks_view:
-  pattern: '/menu-local-task-test/tasks/view'
+  path:  '/menu-local-task-test/tasks/view'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 
 menu_test.local_task_test_tasks_edit:
-  pattern: '/menu-local-task-test/tasks/edit'
+  path:  '/menu-local-task-test/tasks/edit'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 
 menu_test.local_task_test_tasks_settings:
-  pattern: '/menu-local-task-test/tasks/settings'
+  path:  '/menu-local-task-test/tasks/settings'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 
 menu_test.local_task_test_tasks_settings_sub1:
-  pattern: '/menu-local-task-test/tasks/settings/sub1'
+  path:  '/menu-local-task-test/tasks/settings/sub1'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 
 menu_test.local_task_test_tasks_settings_sub2:
-  pattern: '/menu-local-task-test/tasks/settings/sub2'
+  path:  '/menu-local-task-test/tasks/settings/sub2'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 
 menu_test.local_task_test_tasks_settings_sub3:
-  pattern: '/menu-local-task-test/tasks/settings/sub3'
+  path:  '/menu-local-task-test/tasks/settings/sub3'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 
 menu_test.optional_placeholder:
-  pattern: '/menu-test/optional/{placeholder}'
+  path:  '/menu-test/optional/{placeholder}'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::testDefaults'
     placeholder: NULL
diff --git a/core/modules/system/tests/modules/paramconverter_test/paramconverter_test.routing.yml b/core/modules/system/tests/modules/paramconverter_test/paramconverter_test.routing.yml
index 31078f6..1beb1d5 100644
--- a/core/modules/system/tests/modules/paramconverter_test/paramconverter_test.routing.yml
+++ b/core/modules/system/tests/modules/paramconverter_test/paramconverter_test.routing.yml
@@ -1,12 +1,12 @@
 paramconverter_test.user_node_foo:
-  pattern: '/paramconverter_test/test_user_node_foo/{user}/{node}/{foo}'
+  path:  '/paramconverter_test/test_user_node_foo/{user}/{node}/{foo}'
   defaults:
     _content: '\Drupal\paramconverter_test\TestControllers::testUserNodeFoo'
   requirements:
     _access: 'TRUE'
 
 paramconverter_test.node_user_user:
-  pattern: '/paramconverter_test/test_node_user_user/{node}/{foo}/{user}'
+  path:  '/paramconverter_test/test_node_user_user/{node}/{foo}/{user}'
   defaults:
     _content: '\Drupal\paramconverter_test\TestControllers::testUserNodeFoo'
   requirements:
@@ -17,7 +17,7 @@ paramconverter_test.node_user_user:
         type: 'entity:user'
 
 paramconverter_test.node_node_foo:
-  pattern: '/paramconverter_test/test_node_node_foo/{user}/{node}/{foo}'
+  path:  '/paramconverter_test/test_node_node_foo/{user}/{node}/{foo}'
   defaults:
     _content: '\Drupal\paramconverter_test\TestControllers::testUserNodeFoo'
   requirements:
@@ -28,7 +28,7 @@ paramconverter_test.node_node_foo:
         type: 'entity:node'
 
 paramconverter_test.node_set_parent:
-  pattern: '/paramconverter_test/node/{node}/set/parent/{parent}'
+  path:  '/paramconverter_test/node/{node}/set/parent/{parent}'
   requirements:
     _access: 'TRUE'
   defaults:
diff --git a/core/modules/system/tests/modules/plugin_test/plugin_test.routing.yml b/core/modules/system/tests/modules/plugin_test/plugin_test.routing.yml
index 86398b5..d4e5f89 100644
--- a/core/modules/system/tests/modules/plugin_test/plugin_test.routing.yml
+++ b/core/modules/system/tests/modules/plugin_test/plugin_test.routing.yml
@@ -1,5 +1,5 @@
 plugin_test.definition:
-  pattern: '/plugin_definition_test'
+  path:  '/plugin_definition_test'
   defaults:
     _content: '\Drupal\plugin_test\Controller\PluginTest::testDefinitions'
   requirements:
diff --git a/core/modules/system/tests/modules/router_test/router_test.routing.yml b/core/modules/system/tests/modules/router_test/router_test.routing.yml
index a6f55a7..ba92dd4 100644
--- a/core/modules/system/tests/modules/router_test/router_test.routing.yml
+++ b/core/modules/system/tests/modules/router_test/router_test.routing.yml
@@ -1,26 +1,26 @@
 router_test.1:
-  pattern: '/router_test/test1'
+  path:  '/router_test/test1'
   defaults:
     _controller: '\Drupal\router_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 
 router_test.2:
-  pattern: '/router_test/test2'
+  path:  '/router_test/test2'
   defaults:
     _content: '\Drupal\router_test\TestControllers::test2'
   requirements:
     _access: 'TRUE'
 
 router_test.3:
-  pattern: '/router_test/test3/{value}'
+  path:  '/router_test/test3/{value}'
   defaults:
     _content: '\Drupal\router_test\TestControllers::test3'
   requirements:
     _access: 'TRUE'
 
 router_test.4:
-  pattern: '/router_test/test4/{value}'
+  path:  '/router_test/test4/{value}'
   defaults:
     _content: '\Drupal\router_test\TestControllers::test4'
     value: 'narf'
@@ -28,26 +28,26 @@ router_test.4:
     _access: 'TRUE'
 
 router_test.6:
-  pattern: '/router_test/test6'
+  path:  '/router_test/test6'
   defaults:
     _controller: '\Drupal\router_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 
 router_test.7:
-  pattern: '/router_test/test7'
+  path:  '/router_test/test7'
   defaults:
     _controller: '\Drupal\router_test\TestControllers::test7'
   requirements:
     _permission: 'access test7'
 
 router_test.8:
-  pattern: '/router_test/test8'
+  path:  '/router_test/test8'
   defaults:
     _controller: '\Drupal\router_test\TestControllers::test8'
 
 router_test.9:
-  pattern: '/router_test/test9'
+  path:  '/router_test/test9'
   defaults:
     _controller: '\Drupal\router_test\TestControllers::test8'
   requirements:
@@ -55,14 +55,14 @@ router_test.9:
     _access_router_test: 'TRUE'
 
 router_test.10:
-  pattern: '/router_test/test10'
+  path:  '/router_test/test10'
   defaults:
     _content: '\Drupal\router_test\TestContent::test1'
   requirements:
     _access: 'TRUE'
 
 router_test.11:
-  pattern: '/router_test/test11'
+  path:  '/router_test/test11'
   options:
     _auth: [ 'http_basic' ]
   requirements:
@@ -71,14 +71,14 @@ router_test.11:
     _content: '\Drupal\router_test\TestContent::test11'
 
 router_test.12:
-  pattern: '/router_test/test12/{user}'
+  path:  '/router_test/test12/{user}'
   requirements:
     _access: 'TRUE'
   defaults:
     _content: '\Drupal\router_test\TestContent::subrequestTest'
 
 router_test.13:
-  pattern: '/router_test/test13/{user}'
+  path:  '/router_test/test13/{user}'
   requirements:
     _access: 'TRUE'
   defaults:
diff --git a/core/modules/system/tests/modules/session_test/session_test.routing.yml b/core/modules/system/tests/modules/session_test/session_test.routing.yml
index 9f19002..b00fc4c 100644
--- a/core/modules/system/tests/modules/session_test/session_test.routing.yml
+++ b/core/modules/system/tests/modules/session_test/session_test.routing.yml
@@ -1,5 +1,5 @@
 session_test.get:
-  pattern: '/session-test/get'
+  path:  '/session-test/get'
   defaults:
     _title: 'Session value'
     _controller: '\Drupal\session_test\Controller\SessionTestController::get'
@@ -7,7 +7,7 @@ session_test.get:
     _permission: 'access content'
 
 session_test.id:
-  pattern: '/session-test/id'
+  path:  '/session-test/id'
   defaults:
     _title: 'Session ID'
     _controller: '\Drupal\session_test\Controller\SessionTestController::getId'
@@ -15,7 +15,7 @@ session_test.id:
     _permission: 'access content'
 
 session_test.id_from_cookie:
-  pattern: '/session-test/id-from-cookie'
+  path:  '/session-test/id-from-cookie'
   defaults:
     _title: 'Session ID from cookie'
     _controller: '\Drupal\session_test\Controller\SessionTestController::getIdFromCookie'
@@ -23,7 +23,7 @@ session_test.id_from_cookie:
     _permission: 'access content'
 
 session_test.set:
-  pattern: '/session-test/set/{test_value}'
+  path:  '/session-test/set/{test_value}'
   defaults:
     _title: 'Set session value'
     _controller: '\Drupal\session_test\Controller\SessionTestController::set'
@@ -34,7 +34,7 @@ session_test.set:
     _permission: 'access content'
 
 session_test.no_set:
-  pattern: '/session-test/no-set/{test_value}'
+  path:  '/session-test/no-set/{test_value}'
   defaults:
     _title: 'Set session value but do not save session'
     _controller: '\Drupal\session_test\Controller\SessionTestController::noSet'
@@ -45,7 +45,7 @@ session_test.no_set:
     _permission: 'access content'
 
 session_test.set_message:
-  pattern: '/session-test/set-message'
+  path:  '/session-test/set-message'
   defaults:
     _title: 'Set message'
     _controller: '\Drupal\session_test\Controller\SessionTestController::setMessage'
@@ -53,7 +53,7 @@ session_test.set_message:
     _permission: 'access content'
 
 session_test.set_message_but_dont_save:
-  pattern: '/session-test/set-message-but-dont-save'
+  path:  '/session-test/set-message-but-dont-save'
   defaults:
     _title: 'Set message but do not save session'
     _controller: '\Drupal\session_test\Controller\SessionTestController::setMessageButDontSave'
@@ -61,7 +61,7 @@ session_test.set_message_but_dont_save:
     _permission: 'access content'
 
 session_test.set_not_started:
-  pattern: '/session-test/set-not-started'
+  path:  '/session-test/set-not-started'
   defaults:
     _title: 'Set message when session is not started'
     _controller: '\Drupal\session_test\Controller\SessionTestController::setNotStarted'
@@ -69,7 +69,7 @@ session_test.set_not_started:
     _permission: 'access content'
 
 session_test.is_logged_in:
-  pattern: '/session-test/is-logged-in'
+  path:  '/session-test/is-logged-in'
   defaults:
     _title: 'Check if user is logged in'
     _controller: '\Drupal\session_test\Controller\SessionTestController::isLoggedIn'
diff --git a/core/modules/system/tests/modules/system_test/system_test.routing.yml b/core/modules/system/tests/modules/system_test/system_test.routing.yml
index 1be2566..942d126 100644
--- a/core/modules/system/tests/modules/system_test/system_test.routing.yml
+++ b/core/modules/system/tests/modules/system_test/system_test.routing.yml
@@ -1,5 +1,5 @@
 system_test.page_cache_accept_header:
-  pattern: '/system-test/page-cache/accept-header'
+  path:  '/system-test/page-cache/accept-header'
   defaults:
     _controller: '\Drupal\system_test\Controller\PageCacheAcceptHeaderController::content'
   requirements:
diff --git a/core/modules/system/tests/modules/test_page_test/test_page_test.routing.yml b/core/modules/system/tests/modules/test_page_test/test_page_test.routing.yml
index e0ff374..ac8e935 100644
--- a/core/modules/system/tests/modules/test_page_test/test_page_test.routing.yml
+++ b/core/modules/system/tests/modules/test_page_test/test_page_test.routing.yml
@@ -1,12 +1,12 @@
 test_page_test.render_title:
-  pattern: "/test-render-title"
+  path:  "/test-render-title"
   defaults:
     _content: 'Drupal\test_page_test\Controller\Test::renderTitle'
   requirements:
     _access: 'TRUE'
 
 test_page_test.static_title:
-  pattern: "/test-page-static-title"
+  path:  "/test-page-static-title"
   defaults:
     _content: 'Drupal\test_page_test\Controller\Test::staticTitle'
     _title: 'Static title'
@@ -14,14 +14,14 @@ test_page_test.static_title:
     _access: 'TRUE'
 
 test_page_test.admin_render_title:
-  pattern: "/admin/test-render-title"
+  path:  "/admin/test-render-title"
   defaults:
     _content: 'Drupal\test_page_test\Controller\Test::renderTitle'
   requirements:
     _access: 'TRUE'
 
 test_page_test.render_title_controller:
-  pattern: "/test-render-title-controller"
+  path:  "/test-render-title-controller"
   defaults:
     _controller: 'Drupal\test_page_test\Controller\Test::renderTitle'
   requirements:
diff --git a/core/modules/system/tests/modules/theme_test/theme_test.routing.yml b/core/modules/system/tests/modules/theme_test/theme_test.routing.yml
index eebff83..5e37e7f 100644
--- a/core/modules/system/tests/modules/theme_test/theme_test.routing.yml
+++ b/core/modules/system/tests/modules/theme_test/theme_test.routing.yml
@@ -1,26 +1,26 @@
 theme_test.function_template_override:
-  pattern: '/theme-test/function-template-overridden'
+  path:  '/theme-test/function-template-overridden'
   defaults:
     _content: '\Drupal\theme_test\ThemeTestController::functionTemplateOverridden'
   requirements:
     _permission: 'access content'
 
 theme_test.info_stylesheets:
-  pattern: '/theme-test/info/stylesheets'
+  path:  '/theme-test/info/stylesheets'
   defaults:
     _content: '\Drupal\theme_test\ThemeTestController::testInfoStylesheets'
   requirements:
     _access: 'TRUE'
 
 theme_test.template_test:
-  pattern: '/theme-test/template-test'
+  path:  '/theme-test/template-test'
   defaults:
     _content: '\Drupal\theme_test\ThemeTestController::testTemplate'
   requirements:
     _access: 'TRUE'
 
 theme_test.suggestion:
-  pattern: '/theme-test/suggestion'
+  path:  '/theme-test/suggestion'
   defaults:
     _content: '\Drupal\theme_test\ThemeTestController::testSuggestion'
     _title: 'Suggestion'
@@ -28,7 +28,7 @@ theme_test.suggestion:
     _access: 'TRUE'
 
 theme_test.alter:
-  pattern: '/theme-test/alter'
+  path:  '/theme-test/alter'
   defaults:
     _content: '\Drupal\theme_test\ThemeTestController::testAlter'
     _title: 'Suggestion'
@@ -36,7 +36,7 @@ theme_test.alter:
     _access: 'TRUE'
 
 theme_test.request_listener:
-  pattern: '/theme-test/request-listener'
+  path:  '/theme-test/request-listener'
   defaults:
     _content: '\Drupal\theme_test\ThemeTestController::testRequestListener'
   requirements:
diff --git a/core/modules/system/tests/modules/twig_extension_test/twig_extension_test.routing.yml b/core/modules/system/tests/modules/twig_extension_test/twig_extension_test.routing.yml
index 8d4bace..0596d49 100644
--- a/core/modules/system/tests/modules/twig_extension_test/twig_extension_test.routing.yml
+++ b/core/modules/system/tests/modules/twig_extension_test/twig_extension_test.routing.yml
@@ -1,11 +1,11 @@
 twig_extension_test.filter:
-  pattern: '/twig-extension-test/filter'
+  path:  '/twig-extension-test/filter'
   defaults:
     _content: '\Drupal\twig_extension_test\TwigExtensionTestController::testFilterRender'
   requirements:
     _permission: 'access content'
 twig_extension_test.function:
-  pattern: '/twig-extension-test/function'
+  path:  '/twig-extension-test/function'
   defaults:
     _content: '\Drupal\twig_extension_test\TwigExtensionTestController::testFunctionRender'
   requirements:
diff --git a/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.routing.yml b/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.routing.yml
index 60312ba..343b175 100644
--- a/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.routing.yml
+++ b/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.routing.yml
@@ -1,12 +1,12 @@
 twig_theme_test.php_variables:
-  pattern: '/twig-theme-test/php-variables'
+  path:  '/twig-theme-test/php-variables'
   defaults:
     _content: '\Drupal\twig_theme_test\TwigThemeTestController::phpVariablesRender'
   requirements:
     _permission: 'access content'
 
 twig_theme_test.trans:
-  pattern: '/twig-theme-test/trans'
+  path:  '/twig-theme-test/trans'
   defaults:
     _content: '\Drupal\twig_theme_test\TwigThemeTestController::transBlockRender'
   requirements:
diff --git a/core/modules/system/tests/modules/url_alter_test/url_alter_test.routing.yml b/core/modules/system/tests/modules/url_alter_test/url_alter_test.routing.yml
index 810ae23..8d5922f 100644
--- a/core/modules/system/tests/modules/url_alter_test/url_alter_test.routing.yml
+++ b/core/modules/system/tests/modules/url_alter_test/url_alter_test.routing.yml
@@ -1,5 +1,5 @@
 url_alter_test.foo:
-  pattern: 'url-alter-test/foo'
+  path:  'url-alter-test/foo'
   defaults:
     _content: '\Drupal\url_alter_test\Controller\URLAlterTestController::foo'
   requirements:
diff --git a/core/modules/taxonomy/taxonomy.routing.yml b/core/modules/taxonomy/taxonomy.routing.yml
index 053f4ba..ecc0fb3 100644
--- a/core/modules/taxonomy/taxonomy.routing.yml
+++ b/core/modules/taxonomy/taxonomy.routing.yml
@@ -1,75 +1,75 @@
 taxonomy.vocabulary_list:
-  pattern: '/admin/structure/taxonomy'
+  path:  '/admin/structure/taxonomy'
   defaults:
     _entity_list: 'taxonomy_vocabulary'
   requirements:
     _permission: 'administer taxonomy'
 
 taxonomy.term_add:
-  pattern: '/admin/structure/taxonomy/manage/{taxonomy_vocabulary}/add'
+  path:  '/admin/structure/taxonomy/manage/{taxonomy_vocabulary}/add'
   defaults:
     _content: '\Drupal\taxonomy\Controller\TaxonomyController::addForm'
   requirements:
     _entity_create_access: 'taxonomy_term:{taxonomy_vocabulary}'
 
 taxonomy.term_edit:
-  pattern: '/taxonomy/term/{taxonomy_term}/edit'
+  path:  '/taxonomy/term/{taxonomy_term}/edit'
   defaults:
     _entity_form: 'taxonomy_term.default'
   requirements:
     _entity_access: 'taxonomy_term.update'
 
 taxonomy.term_delete:
-  pattern: '/taxonomy/term/{taxonomy_term}/delete'
+  path:  '/taxonomy/term/{taxonomy_term}/delete'
   defaults:
     _entity_form: 'taxonomy_term.delete'
   requirements:
     _entity_access: 'taxonomy_term.delete'
 
 taxonomy.vocabulary_add:
-  pattern: '/admin/structure/taxonomy/add'
+  path:  '/admin/structure/taxonomy/add'
   defaults:
     _entity_form: 'taxonomy_vocabulary'
   requirements:
     _entity_create_access: 'taxonomy_vocabulary'
 
 taxonomy.vocabulary_edit:
-  pattern: '/admin/structure/taxonomy/manage/{taxonomy_vocabulary}/edit'
+  path:  '/admin/structure/taxonomy/manage/{taxonomy_vocabulary}/edit'
   defaults:
     _entity_form: 'taxonomy_vocabulary.default'
   requirements:
     _entity_access: 'taxonomy_vocabulary.update'
 
 taxonomy.vocabulary_delete:
-  pattern: '/admin/structure/taxonomy/manage/{taxonomy_vocabulary}/delete'
+  path:  '/admin/structure/taxonomy/manage/{taxonomy_vocabulary}/delete'
   defaults:
     _entity_form: 'taxonomy_vocabulary.delete'
   requirements:
     _entity_access: 'taxonomy_vocabulary.delete'
 
 taxonomy.vocabulary_reset:
-  pattern: '/admin/structure/taxonomy/manage/{taxonomy_vocabulary}/reset'
+  path:  '/admin/structure/taxonomy/manage/{taxonomy_vocabulary}/reset'
   defaults:
     _entity_form: 'taxonomy_vocabulary.reset'
   requirements:
     _permission: 'administer taxonomy'
 
 taxonomy.autocomplete:
-  pattern: '/taxonomy/autocomplete/{entity_type}/{field_name}'
+  path:  '/taxonomy/autocomplete/{entity_type}/{field_name}'
   defaults:
     _controller: '\Drupal\taxonomy\Controller\TermAutocompleteController::autocomplete'
   requirements:
     _permission: 'access content'
 
 taxonomy.autocomplete_vid:
-  pattern: '/taxonomy/autocomplete_vid/{taxonomy_vocabulary}'
+  path:  '/taxonomy/autocomplete_vid/{taxonomy_vocabulary}'
   defaults:
     _controller: '\Drupal\taxonomy\Controller\TermAutocompleteController::autocompletePerVid'
   requirements:
     _permission: 'access content'
 
 taxonomy.overview_terms:
-  pattern: 'admin/structure/taxonomy/manage/{taxonomy_vocabulary}'
+  path:  'admin/structure/taxonomy/manage/{taxonomy_vocabulary}'
   defaults:
     _form: 'Drupal\taxonomy\Form\OverviewTerms'
   requirements:
diff --git a/core/modules/toolbar/toolbar.routing.yml b/core/modules/toolbar/toolbar.routing.yml
index aa776c8..946037e 100644
--- a/core/modules/toolbar/toolbar.routing.yml
+++ b/core/modules/toolbar/toolbar.routing.yml
@@ -1,5 +1,5 @@
 toolbar.subtrees:
-  pattern: '/toolbar/subtrees/{hash}'
+  path:  '/toolbar/subtrees/{hash}'
   defaults:
     _controller: '\Drupal\toolbar\Routing\ToolbarController::subtreesJsonp'
   requirements:
diff --git a/core/modules/update/tests/modules/update_test/update_test.routing.yml b/core/modules/update/tests/modules/update_test/update_test.routing.yml
index 6e40c94..6d57c23 100644
--- a/core/modules/update/tests/modules/update_test/update_test.routing.yml
+++ b/core/modules/update/tests/modules/update_test/update_test.routing.yml
@@ -1,5 +1,5 @@
 update_test.503:
-  pattern: '/503-error'
+  path:  '/503-error'
   defaults:
     _controller: 'Drupal\update_test\Controller\UpdateTestController::updateError'
   requirements:
diff --git a/core/modules/update/update.routing.yml b/core/modules/update/update.routing.yml
index 4219734..406a881 100644
--- a/core/modules/update/update.routing.yml
+++ b/core/modules/update/update.routing.yml
@@ -1,12 +1,12 @@
 update.settings:
-  pattern: '/admin/reports/updates/settings'
+  path:  '/admin/reports/updates/settings'
   defaults:
     _form: '\Drupal\update\UpdateSettingsForm'
   requirements:
     _permission: 'administer site configuration'
 
 update.status:
-  pattern: '/admin/reports/updates'
+  path:  '/admin/reports/updates'
   defaults:
     _content: '\Drupal\update\Controller\UpdateController::updateStatus'
   requirements:
diff --git a/core/modules/user/tests/modules/user_form_test/user_form_test.routing.yml b/core/modules/user/tests/modules/user_form_test/user_form_test.routing.yml
index 8e651e0..af09956 100644
--- a/core/modules/user/tests/modules/user_form_test/user_form_test.routing.yml
+++ b/core/modules/user/tests/modules/user_form_test/user_form_test.routing.yml
@@ -1,5 +1,5 @@
 user_form_test.current_password:
-  pattern: '/user_form_test_current_password/{user}'
+  path:  '/user_form_test_current_password/{user}'
   defaults:
     _form: '\Drupal\user_form_test\Form\TestCurrentPassword'
   requirements:
diff --git a/core/modules/user/user.routing.yml b/core/modules/user/user.routing.yml
index ea4ce37..f2a891f 100644
--- a/core/modules/user/user.routing.yml
+++ b/core/modules/user/user.routing.yml
@@ -1,68 +1,68 @@
 user.register:
-  pattern: '/user/register'
+  path:  '/user/register'
   defaults:
     _entity_form: 'user.register'
   requirements:
     _access_user_register: 'TRUE'
 
 user.logout:
-  pattern: '/user/logout'
+  path:  '/user/logout'
   defaults:
     _controller: '\Drupal\user\Controller\UserController::logout'
   requirements:
     _user_is_logged_in: 'TRUE'
 
 user.autocomplete:
-  pattern: '/user/autocomplete'
+  path:  '/user/autocomplete'
   defaults:
     _controller: '\Drupal\user\Controller\UserAutocompleteController::autocompleteUser'
   requirements:
     _permission: 'access user profiles'
 
 user.autocomplete_anonymous:
-  pattern: '/user/autocomplete/anonymous'
+  path:  '/user/autocomplete/anonymous'
   defaults:
     _controller: '\Drupal\user\Controller\UserAutocompleteController::autocompleteUserAnonymous'
   requirements:
     _permission: 'access user profiles'
 
 user.admin_index:
-  pattern: '/admin/config/people'
+  path:  '/admin/config/people'
   defaults:
     _content: '\Drupal\system\Controller\SystemController::systemAdminMenuBlockPage'
   requirements:
     _permission: 'access administration pages'
 
 user.account_settings:
-  pattern: '/admin/config/people/accounts'
+  path:  '/admin/config/people/accounts'
   defaults:
     _form: '\Drupal\user\AccountSettingsForm'
   requirements:
     _permission: 'administer account settings'
 
 user.admin_create:
-  pattern: '/admin/people/create'
+  path:  '/admin/people/create'
   defaults:
     _entity_form: 'user.register'
   requirements:
     _permission: 'administer users'
 
 user.admin_permissions:
-  pattern: '/admin/people/permissions'
+  path:  '/admin/people/permissions'
   defaults:
     _form: '\Drupal\user\Form\UserPermissionsForm'
   requirements:
     _permission: 'administer permissions'
 
 user.admin_permission:
-  pattern: '/admin/people/permissions/{role_id}'
+  path:  '/admin/people/permissions/{role_id}'
   defaults:
     _form: '\Drupal\user\Form\UserPermissionsRoleSpecificForm'
   requirements:
     _permission: 'administer permissions'
 
 user.multiple_cancel_confirm:
-  pattern: '/admin/people/cancel'
+  path:  '/admin/people/cancel'
   defaults:
     _form: '\Drupal\user\Form\UserMultipleCancelConfirm'
     _title: 'Cancel user'
@@ -70,63 +70,63 @@ user.multiple_cancel_confirm:
     _permission: 'administer users'
 
 user.role_list:
-  pattern: '/admin/people/roles'
+  path:  '/admin/people/roles'
   defaults:
     _entity_list: 'user_role'
   requirements:
     _permission: 'administer permissions'
 
 user.role_add:
-  pattern: '/admin/people/roles/add'
+  path:  '/admin/people/roles/add'
   defaults:
     _entity_form: user_role.default
   requirements:
     _permission: 'administer permissions'
 
 user.role_edit:
-  pattern: '/admin/people/roles/manage/{user_role}'
+  path:  '/admin/people/roles/manage/{user_role}'
   defaults:
     _entity_form: user_role.default
   requirements:
     _entity_access: user_role.update
 
 user.role_delete:
-  pattern: '/admin/people/roles/manage/{user_role}/delete'
+  path:  '/admin/people/roles/manage/{user_role}/delete'
   defaults:
     _entity_form: user_role.delete
   requirements:
     _entity_access: user_role.delete
 
 user.pass:
-  pattern: '/user/password'
+  path:  '/user/password'
   defaults:
     _form: '\Drupal\user\Form\UserPasswordForm'
   requirements:
     _access: 'TRUE'
 
 user.page:
-  pattern: '/user'
+  path:  '/user'
   defaults:
     _content: '\Drupal\user\Controller\UserController::userPage'
   requirements:
     _access: 'TRUE'
 
 user.login:
-  pattern: '/user/login'
+  path:  '/user/login'
   defaults:
     _form: '\Drupal\user\Form\UserLoginForm'
   requirements:
     _access: 'TRUE'
 
 user.edit:
-  pattern: '/user/{user}/edit'
+  path:  '/user/{user}/edit'
   defaults:
     _entity_form: 'user.default'
   requirements:
     _entity_access: 'user.update'
 
 user.cancel_confirm:
-  pattern: '/user/{user}/cancel'
+  path:  '/user/{user}/cancel'
   defaults:
     _title: 'Cancel account'
     _entity_form: 'user.cancel'
diff --git a/core/modules/views/tests/modules/views_test_data/views_test_data.routing.yml b/core/modules/views/tests/modules/views_test_data/views_test_data.routing.yml
index ce61bb3..6ee99b4 100644
--- a/core/modules/views/tests/modules/views_test_data/views_test_data.routing.yml
+++ b/core/modules/views/tests/modules/views_test_data/views_test_data.routing.yml
@@ -1,5 +1,5 @@
 views_test_data.element:
-  pattern: '/views_test_data_element_form'
+  path:  '/views_test_data_element_form'
   defaults:
     _form: '\Drupal\views_test_data\Form\ViewsTestDataElementForm'
   requirements:
diff --git a/core/modules/views/views.routing.yml b/core/modules/views/views.routing.yml
index 8d9358d..3a0eb94 100644
--- a/core/modules/views/views.routing.yml
+++ b/core/modules/views/views.routing.yml
@@ -1,5 +1,5 @@
 views.ajax:
-  pattern: '/views/ajax'
+  path:  '/views/ajax'
   defaults:
     _controller: '\Drupal\views\Controller\ViewAjaxController::ajaxView'
   requirements:
diff --git a/core/modules/views_ui/views_ui.routing.yml b/core/modules/views_ui/views_ui.routing.yml
index 4d57bc7..73a0850 100644
--- a/core/modules/views_ui/views_ui.routing.yml
+++ b/core/modules/views_ui/views_ui.routing.yml
@@ -1,47 +1,47 @@
 views_ui.list:
-  pattern: '/admin/structure/views'
+  path:  '/admin/structure/views'
   defaults:
     _entity_list: 'view'
   requirements:
     _permission: 'administer views'
 
 views_ui.add:
-  pattern: '/admin/structure/views/add'
+  path:  '/admin/structure/views/add'
   defaults:
     _entity_form: 'view.add'
   requirements:
     _permission: 'administer views'
 
 views_ui.settings_basic:
-  pattern: '/admin/structure/views/settings'
+  path:  '/admin/structure/views/settings'
   defaults:
     _form: '\Drupal\views_ui\Form\BasicSettingsForm'
   requirements:
     _permission: 'administer views'
 
 views_ui.settings_advanced:
-  pattern: '/admin/structure/views/settings/advanced'
+  path:  '/admin/structure/views/settings/advanced'
   defaults:
     _form: '\Drupal\views_ui\Form\AdvancedSettingsForm'
   requirements:
     _permission: 'administer views'
 
 views_ui.reports_fields:
-  pattern: '/admin/reports/fields/views-fields'
+  path:  '/admin/reports/fields/views-fields'
   defaults:
     _content: '\Drupal\views_ui\Controller\ViewsUIController::reportFields'
   requirements:
     _permission: 'administer views'
 
 views_ui.reports_plugins:
-  pattern: '/admin/reports/views-plugins'
+  path:  '/admin/reports/views-plugins'
   defaults:
     _content: '\Drupal\views_ui\Controller\ViewsUIController::reportPlugins'
   requirements:
     _permission: 'administer views'
 
 views_ui.operation:
-  pattern: '/admin/structure/views/view/{view}/{op}'
+  path:  '/admin/structure/views/view/{view}/{op}'
   defaults:
     _controller: '\Drupal\views_ui\Controller\ViewsUIController::ajaxOperation'
   requirements:
@@ -49,28 +49,28 @@ views_ui.operation:
     op: 'enable|disable'
 
 views_ui.clone:
-  pattern: '/admin/structure/views/view/{view}/clone'
+  path:  '/admin/structure/views/view/{view}/clone'
   defaults:
     _entity_form: 'view.clone'
   requirements:
     _permission: 'administer views'
 
 views_ui.delete:
-  pattern: '/admin/structure/views/view/{view}/delete'
+  path:  '/admin/structure/views/view/{view}/delete'
   defaults:
     _entity_form: 'view.delete'
   requirements:
     _permission: 'administer views'
 
 views_ui.autocomplete:
-  pattern: '/admin/views/ajax/autocomplete/tag'
+  path:  '/admin/views/ajax/autocomplete/tag'
   defaults:
     _controller: '\Drupal\views_ui\Controller\ViewsUIController::autocompleteTag'
   requirements:
     _permission: 'administer views'
 
 views_ui.edit:
-  pattern: '/admin/structure/views/view/{view}'
+  path:  '/admin/structure/views/view/{view}'
   options:
     parameters:
       view:
@@ -81,7 +81,7 @@ views_ui.edit:
     _permission: 'administer views'
 
 views_ui.edit_display:
-  pattern: '/admin/structure/views/view/{view}/edit/{display_id}'
+  path:  '/admin/structure/views/view/{view}/edit/{display_id}'
   options:
     parameters:
       view:
@@ -93,7 +93,7 @@ views_ui.edit_display:
     _permission: 'administer views'
 
 views_ui.preview:
-  pattern: '/admin/structure/views/view/{view}/preview/{display_id}'
+  path:  '/admin/structure/views/view/{view}/preview/{display_id}'
   options:
     parameters:
       view:
@@ -105,14 +105,14 @@ views_ui.preview:
     _permission: 'administer views'
 
 views_ui.break_lock:
-  pattern: '/admin/structure/views/view/{view}/break-lock'
+  path:  '/admin/structure/views/view/{view}/break-lock'
   defaults:
     _entity_form: 'view.break_lock'
   requirements:
     _permission: 'administer views'
 
 views_ui.form_add_item:
-  pattern: '/admin/structure/views/{js}/add-item/{view}/{display_id}/{type}'
+  path:  '/admin/structure/views/{js}/add-item/{view}/{display_id}/{type}'
   options:
     parameters:
       view:
@@ -124,7 +124,7 @@ views_ui.form_add_item:
     js: 'nojs|ajax'
 
 views_ui.form_edit_details:
-  pattern: '/admin/structure/views/{js}/edit-details/{view}/{display_id}'
+  path:  '/admin/structure/views/{js}/edit-details/{view}/{display_id}'
   options:
     parameters:
       view:
@@ -136,7 +136,7 @@ views_ui.form_edit_details:
     js: 'nojs|ajax'
 
 views_ui.form_reorder_displays:
-  pattern: '/admin/structure/views/{js}/reorder-displays/{view}/{display_id}'
+  path:  '/admin/structure/views/{js}/reorder-displays/{view}/{display_id}'
   options:
     parameters:
       view:
@@ -148,7 +148,7 @@ views_ui.form_reorder_displays:
     js: 'nojs|ajax'
 
 views_ui.form_analyze:
-  pattern: '/admin/structure/views/{js}/analyze/{view}/{display_id}'
+  path:  '/admin/structure/views/{js}/analyze/{view}/{display_id}'
   options:
     parameters:
       view:
@@ -160,7 +160,7 @@ views_ui.form_analyze:
     js: 'nojs|ajax'
 
 views_ui.form_rearrange:
-  pattern: '/admin/structure/views/{js}/rearrange/{view}/{display_id}/{type}'
+  path:  '/admin/structure/views/{js}/rearrange/{view}/{display_id}/{type}'
   options:
     parameters:
       view:
@@ -172,7 +172,7 @@ views_ui.form_rearrange:
     js: 'nojs|ajax'
 
 views_ui.form_rearrange_filter:
-  pattern: '/admin/structure/views/{js}/rearrange-filter/{view}/{display_id}'
+  path:  '/admin/structure/views/{js}/rearrange-filter/{view}/{display_id}'
   options:
     parameters:
       view:
@@ -184,7 +184,7 @@ views_ui.form_rearrange_filter:
     js: 'nojs|ajax'
 
 views_ui.form_display:
-  pattern: '/admin/structure/views/{js}/display/{view}/{display_id}/{type}'
+  path:  '/admin/structure/views/{js}/display/{view}/{display_id}/{type}'
   options:
     parameters:
       view:
@@ -196,7 +196,7 @@ views_ui.form_display:
     js: 'nojs|ajax'
 
 views_ui.form_config_item:
-  pattern: '/admin/structure/views/{js}/config-item/{view}/{display_id}/{type}/{id}'
+  path:  '/admin/structure/views/{js}/config-item/{view}/{display_id}/{type}/{id}'
   options:
     parameters:
       view:
@@ -208,7 +208,7 @@ views_ui.form_config_item:
     js: 'nojs|ajax'
 
 views_ui.form_config_item_extra:
-  pattern: '/admin/structure/views/{js}/config-item-extra/{view}/{display_id}/{type}/{id}'
+  path:  '/admin/structure/views/{js}/config-item-extra/{view}/{display_id}/{type}/{id}'
   options:
     parameters:
       view:
@@ -220,7 +220,7 @@ views_ui.form_config_item_extra:
     js: 'nojs|ajax'
 
 views_ui.form_config_item_group:
-  pattern: '/admin/structure/views/{js}/config-item-group/{view}/{display_id}/{type}/{id}'
+  path:  '/admin/structure/views/{js}/config-item-group/{view}/{display_id}/{type}/{id}'
   options:
     parameters:
       view: