diff --git a/core/lib/Drupal/Core/Routing/CompiledRoute.php b/core/lib/Drupal/Core/Routing/CompiledRoute.php
index cd8c74b..98671a7 100644
--- a/core/lib/Drupal/Core/Routing/CompiledRoute.php
+++ b/core/lib/Drupal/Core/Routing/CompiledRoute.php
@@ -139,8 +139,8 @@ public function getRoute() {
    * @return string
    *   The pattern.
    */
-  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..3cbc1f5 100644
--- a/core/lib/Drupal/Core/Routing/MatcherDumper.php
+++ b/core/lib/Drupal/Core/Routing/MatcherDumper.php
@@ -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/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 19e1703..4f3fee6 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 2c69045..9052c56 100644
--- a/core/modules/aggregator/aggregator.routing.yml
+++ b/core/modules/aggregator/aggregator.routing.yml
@@ -1,68 +1,68 @@
 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_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_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:
diff --git a/core/modules/ban/ban.routing.yml b/core/modules/ban/ban.routing.yml
index 16c77ec..0716d7a 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 669e0a2..41330f1 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'
   requirements:
diff --git a/core/modules/block/custom_block/custom_block.routing.yml b/core/modules/block/custom_block/custom_block.routing.yml
index 02bad13..95ba4e5 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/custom-blocks'
+  path: '/admin/structure/custom-blocks'
   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/custom-blocks/manage/{custom_block_type}/delete'
+  path: '/admin/structure/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:
@@ -35,14 +35,14 @@ custom_block_edit:
     custom_block: \d+
 
 custom_block_type_add:
-  pattern: '/admin/structure/custom-blocks/add'
+  path: '/admin/structure/custom-blocks/add'
   defaults:
     _entity_form: 'custom_block_type.add'
   requirements:
     _permission: 'administer blocks'
 
 custom_block_type_edit:
-  pattern: '/admin/structure/custom-blocks/manage/{custom_block_type}'
+  path: '/admin/structure/custom-blocks/manage/{custom_block_type}'
   defaults:
     _entity_form: 'custom_block_type.edit'
   requirements:
diff --git a/core/modules/book/book.routing.yml b/core/modules/book/book.routing.yml
index 6c8b010..e4a1047 100644
--- a/core/modules/book/book.routing.yml
+++ b/core/modules/book/book.routing.yml
@@ -1,19 +1,19 @@
 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\BookSettingsForm'
   requirements:
diff --git a/core/modules/comment/comment.routing.yml b/core/modules/comment/comment.routing.yml
index b62c118..f376bde 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'
@@ -14,7 +14,7 @@ comment_approve:
     _entity_access: 'comment.approve'
 
 comment_permalink:
-  pattern: '/comment/{comment}'
+  path: '/comment/{comment}'
   defaults:
     _controller: '\Drupal\comment\Controller\CommentController::commentPermalink'
   requirements:
diff --git a/core/modules/config/config.routing.yml b/core/modules/config/config.routing.yml
index bf3134d..1e6cab2 100644
--- a/core/modules/config/config.routing.yml
+++ b/core/modules/config/config.routing.yml
@@ -1,29 +1,29 @@
 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 c26a438..da8d704 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_edit:
-  pattern: 'admin/structure/config_test/manage/{config_test}/edit'
+  path: 'admin/structure/config_test/manage/{config_test}/edit'
   defaults:
     _controller: '\Drupal\config_test\ConfigTestController::edit'
     entity_type: 'config_test'
@@ -29,7 +29,7 @@ config_test_entity_edit:
     _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'
@@ -37,7 +37,7 @@ 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'
@@ -45,7 +45,7 @@ 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 ba47a6a..1e9b811 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 d7d55a1..9703497 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/{field_name}'
+  path: 'admin/config/regional/content_translation/translatable/{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 5dd4457..a444beb 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 310d798..dd91256 100644
--- a/core/modules/dblog/dblog.routing.yml
+++ b/core/modules/dblog/dblog.routing.yml
@@ -1,5 +1,5 @@
 dblog_overview:
-  pattern: '/admin/reports/dblog'
+  path: '/admin/reports/dblog'
   defaults:
     _content: '\Drupal\dblog\Controller\DbLogController::overview'
   requirements:
diff --git a/core/modules/edit/edit.routing.yml b/core/modules/edit/edit.routing.yml
index b709d0a..682c145 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'
   requirements:
@@ -22,7 +22,7 @@ edit_field_form:
 
 
 edit_entity_save:
-  pattern: '/edit/entity/{entity_type}/{entity}'
+  path: '/edit/entity/{entity_type}/{entity}'
   defaults:
     _controller: '\Drupal\edit\EditController::entitySave'
   requirements:
diff --git a/core/modules/editor/editor.routing.yml b/core/modules/editor/editor.routing.yml
index 26aa16c..a61fcd5 100644
--- a/core/modules/editor/editor.routing.yml
+++ b/core/modules/editor/editor.routing.yml
@@ -1,18 +1,18 @@
 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'
   requirements:
     _permission: 'access in-place editing'
     _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:
     _filter_access: 'TRUE'
 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 05d7092..d209091 100644
--- a/core/modules/entity/entity.routing.yml
+++ b/core/modules/entity/entity.routing.yml
@@ -1,68 +1,68 @@
 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..b2f73ff 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 946d60e..55d1cfb 100644
--- a/core/modules/field_ui/field_ui.routing.yml
+++ b/core/modules/field_ui/field_ui.routing.yml
@@ -1,5 +1,5 @@
 field_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 c2a9efd..bc0711b 100644
--- a/core/modules/file/file.routing.yml
+++ b/core/modules/file/file.routing.yml
@@ -1,11 +1,11 @@
 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 73fa7ed..8dbc03d 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 5442fb0..6e0dfce 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:
     _filter_access: 'TRUE'
 
 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'
   requirements:
diff --git a/core/modules/forum/forum.routing.yml b/core/modules/forum/forum.routing.yml
index fe816f0..2928791 100644
--- a/core/modules/forum/forum.routing.yml
+++ b/core/modules/forum/forum.routing.yml
@@ -1,35 +1,35 @@
 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_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:
diff --git a/core/modules/help/help.routing.yml b/core/modules/help/help.routing.yml
index 75877c9..974100b 100644
--- a/core/modules/help/help.routing.yml
+++ b/core/modules/help/help.routing.yml
@@ -1,11 +1,11 @@
 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/image/image.routing.yml b/core/modules/image/image.routing.yml
index c5b83ce..ad4453d 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 e75e1ce..6675d7c 100644
--- a/core/modules/language/language.routing.yml
+++ b/core/modules/language/language.routing.yml
@@ -1,26 +1,26 @@
 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_admin_overview:
-  pattern: '/admin/config/regional/language'
+  path: '/admin/config/regional/language'
   defaults:
     _entity_list: 'language_entity'
   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 4ab68ab..902c9e4 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/layout/layout.routing.yml b/core/modules/layout/layout.routing.yml
index d1cd540..ddbaebd 100644
--- a/core/modules/layout/layout.routing.yml
+++ b/core/modules/layout/layout.routing.yml
@@ -1,5 +1,5 @@
 layout_page_list:
-  pattern: '/admin/structure/templates'
+  path: '/admin/structure/templates'
   defaults:
     _content: '\Drupal\layout\Controller\LayoutController::layoutPageList'
   requirements:
diff --git a/core/modules/layout/tests/layout_test/layout_test.routing.yml b/core/modules/layout/tests/layout_test/layout_test.routing.yml
index 636e13f..cdc5d4a 100644
--- a/core/modules/layout/tests/layout_test/layout_test.routing.yml
+++ b/core/modules/layout/tests/layout_test/layout_test.routing.yml
@@ -1,5 +1,5 @@
 layout_test_page:
-  pattern: '/layout-test'
+  path: '/layout-test'
   defaults:
     _content: '\Drupal\layout_test\Controller\LayoutTestController::layoutTestPage'
   requirements:
diff --git a/core/modules/locale/locale.routing.yml b/core/modules/locale/locale.routing.yml
index 2047229..1ecc28e 100644
--- a/core/modules/locale/locale.routing.yml
+++ b/core/modules/locale/locale.routing.yml
@@ -1,12 +1,12 @@
 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:
diff --git a/core/modules/menu/menu.routing.yml b/core/modules/menu/menu.routing.yml
index d710470..90db7a7 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:
     _permission: 'administer menu'
 
 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:
     _permission: 'administer menu'
 
 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:
     _permission: 'administer menu'
 
 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:
     _access_menu_delete_link: 'TRUE'
 
 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 dfdc0a6..021ea21 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'
@@ -42,35 +42,35 @@ 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_edit_default:
-  pattern: '/admin/structure/types/manage/{node_type}/edit'
+  path: '/admin/structure/types/manage/{node_type}/edit'
   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 9f22f56..78687e9 100644
--- a/core/modules/overlay/overlay.routing.yml
+++ b/core/modules/overlay/overlay.routing.yml
@@ -1,5 +1,5 @@
 overlay_message:
-  pattern: '/overlay/dismiss-message'
+  path: '/overlay/dismiss-message'
   defaults:
     _controller: '\Drupal\overlay\Controller\OverlayController::overlayMessage'
   requirements:
diff --git a/core/modules/path/path.routing.yml b/core/modules/path/path.routing.yml
index dbc6883..238495c 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 e01bb81..71135e4 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..843dee9 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 8acf650..62e23e9 100644
--- a/core/modules/search/search.routing.yml
+++ b/core/modules/search/search.routing.yml
@@ -1,11 +1,11 @@
 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 faf495a..d30d4b2 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 8436309..7da0200 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 0d0310f..ebe5399 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..d17dd87 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->getPath(), $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.routing.yml b/core/modules/system/system.routing.yml
index 017d486..fe1cc82 100644
--- a/core/modules/system/system.routing.yml
+++ b/core/modules/system/system.routing.yml
@@ -1,178 +1,178 @@
 system.ajax:
-  pattern: '/system/ajax'
+  path: '/system/ajax'
   defaults:
     _controller: '\Drupal\system\Controller\FormAjaxController::content'
   requirements:
     _access: 'TRUE'
 system.cron:
-  pattern: '/cron/{key}'
+  path: '/cron/{key}'
   defaults:
     _controller: '\Drupal\system\CronController::run'
   requirements:
     _access_system_cron: 'TRUE'
 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'
 
 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'
 
 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'
 
 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'
 
 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'
 
 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
@@ -180,35 +180,35 @@ 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'
 
 system_theme_settings_global:
-  pattern: '/admin/appearance/settings/global'
+  path: '/admin/appearance/settings/global'
   defaults:
     _form: '\Drupal\system\Form\ThemeSettingsForm'
   requirements:
     _permission: 'administer themes'
 
 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:
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 04a0f6d..6b5eab9 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
@@ -1,11 +1,11 @@
 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/common_test/common_test.routing.yml b/core/modules/system/tests/modules/common_test/common_test.routing.yml
index b3186c3..8e7804a 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
@@ -1,5 +1,5 @@
 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:
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 d242511..a429ce1 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 1262be4..89f28d9 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 645fae1..547e45d 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/form_test/form_test.routing.yml b/core/modules/system/tests/modules/form_test/form_test.routing.yml
index 0091561..152a3b9 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
@@ -1,47 +1,47 @@
 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:
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 2d701dc..2e161ec 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
@@ -1,107 +1,107 @@
 menu_login_callback:
-  pattern: '/menu_login_callback'
+  path: '/menu_login_callback'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::testLogin'
   requirements:
     _access: 'TRUE'
 menu_router_test1:
-  pattern: '/foo/{bar}'
+  path: '/foo/{bar}'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test1'
   requirements:
     _access: 'TRUE'
 menu_router_test2:
-  pattern: '/foo/{bar}/b'
+  path: '/foo/{bar}/b'
   defaults:
     _content: '\Drupal\menu_test\TestControllers::test2'
   requirements:
     _access: 'TRUE'
 menu_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_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_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_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_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_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_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_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_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 10efb11..139160c 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/router_test/router_test.routing.yml b/core/modules/system/tests/modules/router_test/router_test.routing.yml
index 2eda2c8..6eb1848 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:
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 866171e..83aded6 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
@@ -1,5 +1,5 @@
 function_template_override:
-  pattern: '/theme-test/function-template-overridden'
+  path: '/theme-test/function-template-overridden'
   defaults:
     _content: '\Drupal\theme_test\ThemeTestController::functionTemplateOverridden'
   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..cda7369 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 17ac5b0..2cc9502 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
@@ -1,11 +1,11 @@
 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/taxonomy/taxonomy.routing.yml b/core/modules/taxonomy/taxonomy.routing.yml
index 09dc6d0..d1be280 100644
--- a/core/modules/taxonomy/taxonomy.routing.yml
+++ b/core/modules/taxonomy/taxonomy.routing.yml
@@ -1,33 +1,33 @@
 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:
     _access_taxonomy_term_create: 'taxonomy_term'
 
 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_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:
diff --git a/core/modules/toolbar/toolbar.routing.yml b/core/modules/toolbar/toolbar.routing.yml
index 448ea99..503e0ea 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/update.routing.yml b/core/modules/update/update.routing.yml
index 16ac4b4..f54154b 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/user.routing.yml b/core/modules/user/user.routing.yml
index 90570ea..f49c9ea 100644
--- a/core/modules/user/user.routing.yml
+++ b/core/modules/user/user.routing.yml
@@ -1,103 +1,103 @@
 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_account_settings:
-  pattern: '/admin/config/people/accounts'
+  path: '/admin/config/people/accounts'
   defaults:
     _form: '\Drupal\user\AccountSettingsForm'
   requirements:
     _permission: 'administer users'
 
 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_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:
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 f022c68..06745df 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 016b2a5..53c180b 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 cc56c8b..77fecf1 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:
     _controller: '\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:
     _controller: '\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.breakLock:
-  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.addItem:
-  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.addItem:
     js: 'nojs|ajax'
 
 views_ui.form.editDetails:
-  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.editDetails:
     js: 'nojs|ajax'
 
 views_ui.form.reorderDisplays:
-  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.reorderDisplays:
     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.rearrangeFilter:
-  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.rearrangeFilter:
     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.configItem:
-  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.configItem:
     js: 'nojs|ajax'
 
 views_ui.form.configItemExtra:
-  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.configItemExtra:
     js: 'nojs|ajax'
 
 views_ui.form.configItemGroup:
-  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: