flaglists migration seems ok.Had to hack flag module: commented hooks to get the site usable again

composer.json

@@ -168,8 +168,11 @@
             "drupal/address": {
               "Integrate Address with Search API https://www.drupal.org/project/address/issues/2812659": "https://www.drupal.org/files/issues/2020-11-02/integrate-address-searchapi-2812659-56.patch"
             },
+            "drupal/flag": {
+              "remove flag hooks to allow site to be accessible again https://www.drupal.org/project/flag/issues/3200806": "./patches/flag-commenthooks.patch"
+            },
             "drupal/flag_lists": {
-              "Does actions are mandatory ? https://www.drupal.org/project/flag_lists/issues/3200585#comment-14012878": "https://www.drupal.org/files/issues/2021-02-26/hasactions.patch"
+              "make the related_flag id unique https://www.drupal.org/project/flag_lists/issues/3200737": "https://www.drupal.org/files/issues/2021-02-27/hasactions%2Buniqflagid.patch"
             }
         },
         "drupal-scaffold": {

patches/flag-commenthooks.patch

@@ -0,0 +1,236 @@
+diff --git a/flag.module b/flag.module
+index 8dd6181..d67cc8a 100644
+--- a/flag.module
++++ b/flag.module
+@@ -342,82 +342,82 @@ function flag_node_links_alter(array &$links, NodeInterface $entity, array &$con
+  *
+  * Handles the 'show_in_links' and 'show_as_field' flag options.
+  */
+-function flag_entity_view(array &$build, EntityInterface $entity, EntityViewDisplayInterface $display, $view_mode) {
+-  // Don't show on previews.
+-  if ($entity->isNew()) {
+-    return;
+-  }
+-
+-  $build['#cache']['contexts'][] = 'user.permissions';
+-
+-  if (empty($build['#cache']['tags'])) {
+-    $build['#cache']['tags'] = [];
+-  }
+-
+-  // Get all possible flags for this entity type.
+-  $flag_service = \Drupal::service('flag');
+-  $flags = $flag_service->getAllFlags($entity->getEntityTypeID(), $entity->bundle());
+-
+-  foreach ($flags as $flag) {
+-    $build['#cache']['tags'] = Cache::mergeTags($build['#cache']['tags'], $flag->getCacheTags());
+-
+-    // Do not display the flag if disabled.
+-    if (!$flag->status()){
+-      continue;
+-    }
+-
+-    $flag_type_plugin = $flag->getFlagTypePlugin();
+-
+-    // Only add cache key if flag link is displayed.
+-    if (!$flag_type_plugin->showAsField() || !$display->getComponent('flag_' . $flag->id())) {
+-      continue;
+-    }
+-
+-    $build['flag_' . $flag->id()] = [
+-      '#lazy_builder' => ['flag.link_builder:build', [
+-        $entity->getEntityTypeId(),
+-        $entity->id(),
+-        $flag->id(),
+-      ]],
+-      '#create_placeholder' => TRUE,
+-    ];
+-  }
+-}
++// function flag_entity_view(array &$build, EntityInterface $entity, EntityViewDisplayInterface $display, $view_mode) {
++//   // Don't show on previews.
++//   if ($entity->isNew()) {
++//     return;
++//   }
++//
++//   $build['#cache']['contexts'][] = 'user.permissions';
++//
++//   if (empty($build['#cache']['tags'])) {
++//     $build['#cache']['tags'] = [];
++//   }
++//
++//   // Get all possible flags for this entity type.
++//   $flag_service = \Drupal::service('flag');
++//   $flags = $flag_service->getAllFlags($entity->getEntityTypeID(), $entity->bundle());
++//
++//   foreach ($flags as $flag) {
++//     $build['#cache']['tags'] = Cache::mergeTags($build['#cache']['tags'], $flag->getCacheTags());
++//
++//     // Do not display the flag if disabled.
++//     if (!$flag->status()){
++//       continue;
++//     }
++//
++//     $flag_type_plugin = $flag->getFlagTypePlugin();
++//
++//     // Only add cache key if flag link is displayed.
++//     if (!$flag_type_plugin->showAsField() || !$display->getComponent('flag_' . $flag->id())) {
++//       continue;
++//     }
++//
++//     $build['flag_' . $flag->id()] = [
++//       '#lazy_builder' => ['flag.link_builder:build', [
++//         $entity->getEntityTypeId(),
++//         $entity->id(),
++//         $flag->id(),
++//       ]],
++//       '#create_placeholder' => TRUE,
++//     ];
++//   }
++// }
+ 
+ /**
+  * Implements hook_entity_build_defaults_alter().
+  */
+-function flag_entity_build_defaults_alter(array &$build, EntityInterface $entity, $view_mode = 'full', $langcode = NULL) {
+-  /** @var \Drupal\flag\FlagService $flag_service */
+-  $flag_service = \Drupal::service('flag');
+-
+-  // Get all possible flags for this entity type.
+-  $flags = $flag_service->getAllFlags($entity->getEntityTypeId(), $entity->bundle());
+-
+-  $no_cache = FALSE;
+-  foreach ($flags as $flag) {
+-    $flag_type_plugin = $flag->getFlagTypePlugin();
+-
+-    // Make sure we're dealing with an entity flag type.
+-    if (!$flag_type_plugin instanceof EntityFlagType) {
+-      continue;
+-    }
+-
+-    // Only add max-age to entity render array if contextual links flag
+-    // display is enabled.
+-    if (!$flag_type_plugin->showContextualLink()) {
+-      continue;
+-    }
+-
+-    $no_cache = TRUE;
+-  }
+-
+-  if ($no_cache) {
+-    $build['#cache']['max-age'] = 0;
+-  }
+-
+-  return $build;
+-}
++// function flag_entity_build_defaults_alter(array &$build, EntityInterface $entity, $view_mode = 'full', $langcode = NULL) {
++//   /** @var \Drupal\flag\FlagService $flag_service */
++//   $flag_service = \Drupal::service('flag');
++//
++//   // Get all possible flags for this entity type.
++//   $flags = $flag_service->getAllFlags($entity->getEntityTypeId(), $entity->bundle());
++//
++//   $no_cache = FALSE;
++//   foreach ($flags as $flag) {
++//     $flag_type_plugin = $flag->getFlagTypePlugin();
++//
++//     // Make sure we're dealing with an entity flag type.
++//     if (!$flag_type_plugin instanceof EntityFlagType) {
++//       continue;
++//     }
++//
++//     // Only add max-age to entity render array if contextual links flag
++//     // display is enabled.
++//     if (!$flag_type_plugin->showContextualLink()) {
++//       continue;
++//     }
++//
++//     $no_cache = TRUE;
++//   }
++//
++//   if ($no_cache) {
++//     $build['#cache']['max-age'] = 0;
++//   }
++//
++//   return $build;
++// }
+ 
+ /**
+  * Implements hook_entity_view_alter().
+@@ -425,41 +425,41 @@ function flag_entity_build_defaults_alter(array &$build, EntityInterface $entity
+  * Alters node contextual links placeholder id to contain flag metadata, so that
+  * contextual links cache considers flags granularity.
+  */
+-function flag_entity_view_alter(&$build, EntityInterface $entity, EntityViewDisplayInterface $display) {
+-  $entity_type = $entity->getEntityTypeId();
+-  if (isset($build['#contextual_links'][$entity_type])) {
+-    /** @var \Drupal\flag\FlagService $flag_service */
+-    $flag_service = \Drupal::service('flag');
+-
+-    // Get all possible flags for this entity type.
+-    $flags = $flag_service->getAllFlags($entity_type, $entity->bundle());
+-
+-    foreach ($flags as $flag) {
+-      $flag_type_plugin = $flag->getFlagTypePlugin();
+-
+-      // Make sure we're dealing with an entity flag type.
+-      if (!$flag_type_plugin instanceof EntityFlagType) {
+-        continue;
+-      }
+-
+-      // Only apply metadata to contextual links if plugin is enabled
+-      if (!$flag_type_plugin->showContextualLink()) {
+-        continue;
+-      }
+-
+-      $action = 'flag';
+-      if ($flag->isFlagged($entity)) {
+-        $action = 'unflag';
+-      }
+-
+-      $flag_keys[] = $flag->id() . '-' . $action;
+-    }
+-
+-    if (!empty($flag_keys)) {
+-      $build['#contextual_links'][$entity_type]['metadata']['flag_keys'] = implode(',', $flag_keys);
+-    }
+-  }
+-}
++// function flag_entity_view_alter(&$build, EntityInterface $entity, EntityViewDisplayInterface $display) {
++//   $entity_type = $entity->getEntityTypeId();
++//   if (isset($build['#contextual_links'][$entity_type])) {
++//     /** @var \Drupal\flag\FlagService $flag_service */
++//     $flag_service = \Drupal::service('flag');
++//
++//     // Get all possible flags for this entity type.
++//     $flags = $flag_service->getAllFlags($entity_type, $entity->bundle());
++//
++//     foreach ($flags as $flag) {
++//       $flag_type_plugin = $flag->getFlagTypePlugin();
++//
++//       // Make sure we're dealing with an entity flag type.
++//       if (!$flag_type_plugin instanceof EntityFlagType) {
++//         continue;
++//       }
++//
++//       // Only apply metadata to contextual links if plugin is enabled
++//       if (!$flag_type_plugin->showContextualLink()) {
++//         continue;
++//       }
++//
++//       $action = 'flag';
++//       if ($flag->isFlagged($entity)) {
++//         $action = 'unflag';
++//       }
++//
++//       $flag_keys[] = $flag->id() . '-' . $action;
++//     }
++//
++//     if (!empty($flag_keys)) {
++//       $build['#contextual_links'][$entity_type]['metadata']['flag_keys'] = implode(',', $flag_keys);
++//     }
++//   }
++// }
+ 
+ /**
+  * Implements hook_contextual_links_alter().

web/modules/custom/materio_migrate/config/install/migrate_plus.migration.d7_flaglistitems.yml

@@ -33,7 +33,7 @@ process:
     migration: d7_flaglists
     source: fid
 
-  baseflag: relatedflag
+  baseflag: baseflag
   # baseflag:
   #   plugin: skip_on_empty
   #   method: row
@@ -49,11 +49,12 @@ process:
     source: entity_id
 
 
-  # TODO use the destination entity_id isnstead of the original id
+  #use the destination entity_id isnstead of the original id
+  # use the destination flag_collection instead of original title
   name:
     plugin: concat
     source:
-      - title
+      - flagcolname
       - dest_entity_id
     delimiter: ' '
 

web/modules/custom/materio_migrate/config/install/migrate_plus.migration.d7_node_article_i18n.yml

@@ -31,8 +31,8 @@ process:
   langcode: language
   content_translation_source: source
   title: title
-  # created: created
-  # changed: changed
+  created: created
+  changed: changed
   body:
     plugin: iterator
     source: body

web/modules/custom/materio_migrate/src/Plugin/migrate/source/D7FlagListItemsMaterio.php

@@ -25,6 +25,9 @@ class D7FlagListItemsMaterio extends SqlBase {
     // Source data is queried from 'curling_games' table.
     $query = $this->select('flag_lists_content', 'c');
     $query->join('flag_lists_flags', 'f', 'c.fid = f.fid');
+    // only import flaglist items for active users
+    $query->join('users_roles', 'ur', 'c.uid = ur.uid');
+    $query->condition('ur.rid', [3,4,6,10,11,13], 'IN');
     $query->fields('c', [
       'fcid',
       'fid',
@@ -105,20 +108,16 @@ class D7FlagListItemsMaterio extends SqlBase {
     // if flag_collection already imported
     if($dfid){
       $flagListsService = \Drupal::service('flaglists');
-      $baseFlags = $flagListsService->getAllFlaggingCollections();
-      foreach ($baseFlags as $flag) {
-        if ($flag->get('id')->value == $dfid) {
-          $relatedFlag = $flag->get('relatedflag')->getValue();
-          $relatedFlagList = $relatedFlag['0']['target_id'];
-          $row->setSourceProperty('relatedflag', $relatedFlagList);
-          break;
-        }
-      }
+      $flagcoll = $flagListsService->getFlaggingCollectionById($dfid);
+      $relatedFlag = $flagcoll->getRelatedFlag();
+      $row->setSourceProperty('baseflag', $relatedFlag->id());
+
+      $row->setSourceProperty('flagcolname', $flagcoll->getName());
     }
 
     // TODO: dest_entity_id (for name composition)
     $entity_id = $row->getSourceProperty('entity_id');
-    // $database = \Drupal::database();
+    // check destid from materiau
     $query_entityid = $database->select('migrate_map_d7_node_materiau', 'm')
       ->condition('m.sourceid1', $entity_id)
       ->fields('m', ['sourceid1', 'destid1']);
@@ -129,6 +128,7 @@ class D7FlagListItemsMaterio extends SqlBase {
         break;
       }
     }
+    // check destid from articles (ex breves)
     if(!$dest_entity_id){
       $query_entityid = $database->select('migrate_map_d7_node_article', 'm')
         ->condition('m.sourceid1', $entity_id)
@@ -147,24 +147,6 @@ class D7FlagListItemsMaterio extends SqlBase {
       $row->setSourceProperty('dest_entity_id', $entity_id);
     }
 
-    // if (!$found) {
-    //   $message = $this->t('The flagging collection "@collection" wasn\'t found');
-    //   $messenger->addError($message,
-    //     ['@collection' => $row->getSourceProperty('relatedflag')]);
-    //   $logger->error($message,
-    //     ['@collection' => $row->getSourceProperty('relatedflag')]);
-    // }
-
-    // Check if the entity exists.
-    // $entity_id = $row->getSourceProperty('entity_id');
-    // $entity = \Drupal::entityTypeManager()->getStorage($row->getSourceProperty('entity_type'))->load($entity_id);
-    // if (empty($entity)) {
-    //   $message = $this->t('The entity with ID "@entity_id" wasn\'t found',
-    //     ['@entity_id' => $entity_id]);
-    //   $messenger->addError($message);
-    //   $logger->error($message);
-    // }
-
     return parent::prepareRow($row);
   }
 

web/modules/custom/materio_migrate/src/Plugin/migrate/source/D7FlagListsMaterio.php

@@ -23,6 +23,9 @@ class D7FlagListsMaterio extends SqlBase {
     // Source data is queried from 'flag_lists_flags' table.
     $query = $this->select('flag_lists_flags', 'c');
     $query->join('flag', 'f', 'c.pfid = f.fid');
+    // only import flaglist items for active users
+    $query->join('users_roles', 'ur', 'c.uid = ur.uid');
+    $query->condition('ur.rid', [3,4,6,10,11,13], 'IN');
     $query->fields('c', [
       'fid',
       'pfid',
@@ -112,6 +115,7 @@ class D7FlagListsMaterio extends SqlBase {
 
     // limit folder name to 32 characters (32 bytes, special chars like é use 2 bytes)
     $title = $row->getSourceProperty('title');
+    $title = $this->remove_accents($title);
     if (mb_strlen($title) > 32) {
       $title = mb_strcut($title, 0 , 28).'...';
     }
@@ -123,4 +127,805 @@ class D7FlagListsMaterio extends SqlBase {
     return parent::prepareRow($row);
   }
 
+/**
+ * Converts all accent characters to ASCII characters.
+ *
+ * If there are no accent characters, then the string given is just returned.
+ *
+ * **Accent characters converted:**
+ *
+ * Currency signs:
+ *
+ * |   Code   | Glyph | Replacement |     Description     |
+ * | -------- | ----- | ----------- | ------------------- |
+ * | U+00A3   | £     | (empty)     | British Pound sign  |
+ * | U+20AC   | €     | E           | Euro sign           |
+ *
+ * Decompositions for Latin-1 Supplement:
+ *
+ * |  Code   | Glyph | Replacement |               Description              |
+ * | ------- | ----- | ----------- | -------------------------------------- |
+ * | U+00AA  | ª     | a           | Feminine ordinal indicator             |
+ * | U+00BA  | º     | o           | Masculine ordinal indicator            |
+ * | U+00C0  | À     | A           | Latin capital letter A with grave      |
+ * | U+00C1  | Á     | A           | Latin capital letter A with acute      |
+ * | U+00C2  | Â     | A           | Latin capital letter A with circumflex |
+ * | U+00C3  | Ã     | A           | Latin capital letter A with tilde      |
+ * | U+00C4  | Ä     | A           | Latin capital letter A with diaeresis  |
+ * | U+00C5  | Å     | A           | Latin capital letter A with ring above |
+ * | U+00C6  | Æ     | AE          | Latin capital letter AE                |
+ * | U+00C7  | Ç     | C           | Latin capital letter C with cedilla    |
+ * | U+00C8  | È     | E           | Latin capital letter E with grave      |
+ * | U+00C9  | É     | E           | Latin capital letter E with acute      |
+ * | U+00CA  | Ê     | E           | Latin capital letter E with circumflex |
+ * | U+00CB  | Ë     | E           | Latin capital letter E with diaeresis  |
+ * | U+00CC  | Ì     | I           | Latin capital letter I with grave      |
+ * | U+00CD  | Í     | I           | Latin capital letter I with acute      |
+ * | U+00CE  | Î     | I           | Latin capital letter I with circumflex |
+ * | U+00CF  | Ï     | I           | Latin capital letter I with diaeresis  |
+ * | U+00D0  | Ð     | D           | Latin capital letter Eth               |
+ * | U+00D1  | Ñ     | N           | Latin capital letter N with tilde      |
+ * | U+00D2  | Ò     | O           | Latin capital letter O with grave      |
+ * | U+00D3  | Ó     | O           | Latin capital letter O with acute      |
+ * | U+00D4  | Ô     | O           | Latin capital letter O with circumflex |
+ * | U+00D5  | Õ     | O           | Latin capital letter O with tilde      |
+ * | U+00D6  | Ö     | O           | Latin capital letter O with diaeresis  |
+ * | U+00D8  | Ø     | O           | Latin capital letter O with stroke     |
+ * | U+00D9  | Ù     | U           | Latin capital letter U with grave      |
+ * | U+00DA  | Ú     | U           | Latin capital letter U with acute      |
+ * | U+00DB  | Û     | U           | Latin capital letter U with circumflex |
+ * | U+00DC  | Ü     | U           | Latin capital letter U with diaeresis  |
+ * | U+00DD  | Ý     | Y           | Latin capital letter Y with acute      |
+ * | U+00DE  | Þ     | TH          | Latin capital letter Thorn             |
+ * | U+00DF  | ß     | s           | Latin small letter sharp s             |
+ * | U+00E0  | à     | a           | Latin small letter a with grave        |
+ * | U+00E1  | á     | a           | Latin small letter a with acute        |
+ * | U+00E2  | â     | a           | Latin small letter a with circumflex   |
+ * | U+00E3  | ã     | a           | Latin small letter a with tilde        |
+ * | U+00E4  | ä     | a           | Latin small letter a with diaeresis    |
+ * | U+00E5  | å     | a           | Latin small letter a with ring above   |
+ * | U+00E6  | æ     | ae          | Latin small letter ae                  |
+ * | U+00E7  | ç     | c           | Latin small letter c with cedilla      |
+ * | U+00E8  | è     | e           | Latin small letter e with grave        |
+ * | U+00E9  | é     | e           | Latin small letter e with acute        |
+ * | U+00EA  | ê     | e           | Latin small letter e with circumflex   |
+ * | U+00EB  | ë     | e           | Latin small letter e with diaeresis    |
+ * | U+00EC  | ì     | i           | Latin small letter i with grave        |
+ * | U+00ED  | í     | i           | Latin small letter i with acute        |
+ * | U+00EE  | î     | i           | Latin small letter i with circumflex   |
+ * | U+00EF  | ï     | i           | Latin small letter i with diaeresis    |
+ * | U+00F0  | ð     | d           | Latin small letter Eth                 |
+ * | U+00F1  | ñ     | n           | Latin small letter n with tilde        |
+ * | U+00F2  | ò     | o           | Latin small letter o with grave        |
+ * | U+00F3  | ó     | o           | Latin small letter o with acute        |
+ * | U+00F4  | ô     | o           | Latin small letter o with circumflex   |
+ * | U+00F5  | õ     | o           | Latin small letter o with tilde        |
+ * | U+00F6  | ö     | o           | Latin small letter o with diaeresis    |
+ * | U+00F8  | ø     | o           | Latin small letter o with stroke       |
+ * | U+00F9  | ù     | u           | Latin small letter u with grave        |
+ * | U+00FA  | ú     | u           | Latin small letter u with acute        |
+ * | U+00FB  | û     | u           | Latin small letter u with circumflex   |
+ * | U+00FC  | ü     | u           | Latin small letter u with diaeresis    |
+ * | U+00FD  | ý     | y           | Latin small letter y with acute        |
+ * | U+00FE  | þ     | th          | Latin small letter Thorn               |
+ * | U+00FF  | ÿ     | y           | Latin small letter y with diaeresis    |
+ *
+ * Decompositions for Latin Extended-A:
+ *
+ * |  Code   | Glyph | Replacement |                    Description                    |
+ * | ------- | ----- | ----------- | ------------------------------------------------- |
+ * | U+0100  | Ā     | A           | Latin capital letter A with macron                |
+ * | U+0101  | ā     | a           | Latin small letter a with macron                  |
+ * | U+0102  | Ă     | A           | Latin capital letter A with breve                 |
+ * | U+0103  | ă     | a           | Latin small letter a with breve                   |
+ * | U+0104  | Ą     | A           | Latin capital letter A with ogonek                |
+ * | U+0105  | ą     | a           | Latin small letter a with ogonek                  |
+ * | U+01006 | Ć     | C           | Latin capital letter C with acute                 |
+ * | U+0107  | ć     | c           | Latin small letter c with acute                   |
+ * | U+0108  | Ĉ     | C           | Latin capital letter C with circumflex            |
+ * | U+0109  | ĉ     | c           | Latin small letter c with circumflex              |
+ * | U+010A  | Ċ     | C           | Latin capital letter C with dot above             |
+ * | U+010B  | ċ     | c           | Latin small letter c with dot above               |
+ * | U+010C  | Č     | C           | Latin capital letter C with caron                 |
+ * | U+010D  | č     | c           | Latin small letter c with caron                   |
+ * | U+010E  | Ď     | D           | Latin capital letter D with caron                 |
+ * | U+010F  | ď     | d           | Latin small letter d with caron                   |
+ * | U+0110  | Đ     | D           | Latin capital letter D with stroke                |
+ * | U+0111  | đ     | d           | Latin small letter d with stroke                  |
+ * | U+0112  | Ē     | E           | Latin capital letter E with macron                |
+ * | U+0113  | ē     | e           | Latin small letter e with macron                  |
+ * | U+0114  | Ĕ     | E           | Latin capital letter E with breve                 |
+ * | U+0115  | ĕ     | e           | Latin small letter e with breve                   |
+ * | U+0116  | Ė     | E           | Latin capital letter E with dot above             |
+ * | U+0117  | ė     | e           | Latin small letter e with dot above               |
+ * | U+0118  | Ę     | E           | Latin capital letter E with ogonek                |
+ * | U+0119  | ę     | e           | Latin small letter e with ogonek                  |
+ * | U+011A  | Ě     | E           | Latin capital letter E with caron                 |
+ * | U+011B  | ě     | e           | Latin small letter e with caron                   |
+ * | U+011C  | Ĝ     | G           | Latin capital letter G with circumflex            |
+ * | U+011D  | ĝ     | g           | Latin small letter g with circumflex              |
+ * | U+011E  | Ğ     | G           | Latin capital letter G with breve                 |
+ * | U+011F  | ğ     | g           | Latin small letter g with breve                   |
+ * | U+0120  | Ġ     | G           | Latin capital letter G with dot above             |
+ * | U+0121  | ġ     | g           | Latin small letter g with dot above               |
+ * | U+0122  | Ģ     | G           | Latin capital letter G with cedilla               |
+ * | U+0123  | ģ     | g           | Latin small letter g with cedilla                 |
+ * | U+0124  | Ĥ     | H           | Latin capital letter H with circumflex            |
+ * | U+0125  | ĥ     | h           | Latin small letter h with circumflex              |
+ * | U+0126  | Ħ     | H           | Latin capital letter H with stroke                |
+ * | U+0127  | ħ     | h           | Latin small letter h with stroke                  |
+ * | U+0128  | Ĩ     | I           | Latin capital letter I with tilde                 |
+ * | U+0129  | ĩ     | i           | Latin small letter i with tilde                   |
+ * | U+012A  | Ī     | I           | Latin capital letter I with macron                |
+ * | U+012B  | ī     | i           | Latin small letter i with macron                  |
+ * | U+012C  | Ĭ     | I           | Latin capital letter I with breve                 |
+ * | U+012D  | ĭ     | i           | Latin small letter i with breve                   |
+ * | U+012E  | Į     | I           | Latin capital letter I with ogonek                |
+ * | U+012F  | į     | i           | Latin small letter i with ogonek                  |
+ * | U+0130  | İ     | I           | Latin capital letter I with dot above             |
+ * | U+0131  | ı     | i           | Latin small letter dotless i                      |
+ * | U+0132  | IJ     | IJ          | Latin capital ligature IJ                         |
+ * | U+0133  | ij     | ij          | Latin small ligature ij                           |
+ * | U+0134  | Ĵ     | J           | Latin capital letter J with circumflex            |
+ * | U+0135  | ĵ     | j           | Latin small letter j with circumflex              |
+ * | U+0136  | Ķ     | K           | Latin capital letter K with cedilla               |
+ * | U+0137  | ķ     | k           | Latin small letter k with cedilla                 |
+ * | U+0138  | ĸ     | k           | Latin small letter Kra                            |
+ * | U+0139  | Ĺ     | L           | Latin capital letter L with acute                 |
+ * | U+013A  | ĺ     | l           | Latin small letter l with acute                   |
+ * | U+013B  | Ļ     | L           | Latin capital letter L with cedilla               |
+ * | U+013C  | ļ     | l           | Latin small letter l with cedilla                 |
+ * | U+013D  | Ľ     | L           | Latin capital letter L with caron                 |
+ * | U+013E  | ľ     | l           | Latin small letter l with caron                   |
+ * | U+013F  | Ŀ     | L           | Latin capital letter L with middle dot            |
+ * | U+0140  | ŀ     | l           | Latin small letter l with middle dot              |
+ * | U+0141  | Ł     | L           | Latin capital letter L with stroke                |
+ * | U+0142  | ł     | l           | Latin small letter l with stroke                  |
+ * | U+0143  | Ń     | N           | Latin capital letter N with acute                 |
+ * | U+0144  | ń     | n           | Latin small letter N with acute                   |
+ * | U+0145  | Ņ     | N           | Latin capital letter N with cedilla               |
+ * | U+0146  | ņ     | n           | Latin small letter n with cedilla                 |
+ * | U+0147  | Ň     | N           | Latin capital letter N with caron                 |
+ * | U+0148  | ň     | n           | Latin small letter n with caron                   |
+ * | U+0149  | ʼn     | n           | Latin small letter n preceded by apostrophe       |
+ * | U+014A  | Ŋ     | N           | Latin capital letter Eng                          |
+ * | U+014B  | ŋ     | n           | Latin small letter Eng                            |
+ * | U+014C  | Ō     | O           | Latin capital letter O with macron                |
+ * | U+014D  | ō     | o           | Latin small letter o with macron                  |
+ * | U+014E  | Ŏ     | O           | Latin capital letter O with breve                 |
+ * | U+014F  | ŏ     | o           | Latin small letter o with breve                   |
+ * | U+0150  | Ő     | O           | Latin capital letter O with double acute          |
+ * | U+0151  | ő     | o           | Latin small letter o with double acute            |
+ * | U+0152  | Π    | OE          | Latin capital ligature OE                         |
+ * | U+0153  | œ     | oe          | Latin small ligature oe                           |
+ * | U+0154  | Ŕ     | R           | Latin capital letter R with acute                 |
+ * | U+0155  | ŕ     | r           | Latin small letter r with acute                   |
+ * | U+0156  | Ŗ     | R           | Latin capital letter R with cedilla               |
+ * | U+0157  | ŗ     | r           | Latin small letter r with cedilla                 |
+ * | U+0158  | Ř     | R           | Latin capital letter R with caron                 |
+ * | U+0159  | ř     | r           | Latin small letter r with caron                   |
+ * | U+015A  | Ś     | S           | Latin capital letter S with acute                 |
+ * | U+015B  | ś     | s           | Latin small letter s with acute                   |
+ * | U+015C  | Ŝ     | S           | Latin capital letter S with circumflex            |
+ * | U+015D  | ŝ     | s           | Latin small letter s with circumflex              |
+ * | U+015E  | Ş     | S           | Latin capital letter S with cedilla               |
+ * | U+015F  | ş     | s           | Latin small letter s with cedilla                 |
+ * | U+0160  | Š     | S           | Latin capital letter S with caron                 |
+ * | U+0161  | š     | s           | Latin small letter s with caron                   |
+ * | U+0162  | Ţ     | T           | Latin capital letter T with cedilla               |
+ * | U+0163  | ţ     | t           | Latin small letter t with cedilla                 |
+ * | U+0164  | Ť     | T           | Latin capital letter T with caron                 |
+ * | U+0165  | ť     | t           | Latin small letter t with caron                   |
+ * | U+0166  | Ŧ     | T           | Latin capital letter T with stroke                |
+ * | U+0167  | ŧ     | t           | Latin small letter t with stroke                  |
+ * | U+0168  | Ũ     | U           | Latin capital letter U with tilde                 |
+ * | U+0169  | ũ     | u           | Latin small letter u with tilde                   |
+ * | U+016A  | Ū     | U           | Latin capital letter U with macron                |
+ * | U+016B  | ū     | u           | Latin small letter u with macron                  |
+ * | U+016C  | Ŭ     | U           | Latin capital letter U with breve                 |
+ * | U+016D  | ŭ     | u           | Latin small letter u with breve                   |
+ * | U+016E  | Ů     | U           | Latin capital letter U with ring above            |
+ * | U+016F  | ů     | u           | Latin small letter u with ring above              |
+ * | U+0170  | Ű     | U           | Latin capital letter U with double acute          |
+ * | U+0171  | ű     | u           | Latin small letter u with double acute            |
+ * | U+0172  | Ų     | U           | Latin capital letter U with ogonek                |
+ * | U+0173  | ų     | u           | Latin small letter u with ogonek                  |
+ * | U+0174  | Ŵ     | W           | Latin capital letter W with circumflex            |
+ * | U+0175  | ŵ     | w           | Latin small letter w with circumflex              |
+ * | U+0176  | Ŷ     | Y           | Latin capital letter Y with circumflex            |
+ * | U+0177  | ŷ     | y           | Latin small letter y with circumflex              |
+ * | U+0178  | Ÿ     | Y           | Latin capital letter Y with diaeresis             |
+ * | U+0179  | Ź     | Z           | Latin capital letter Z with acute                 |
+ * | U+017A  | ź     | z           | Latin small letter z with acute                   |
+ * | U+017B  | Ż     | Z           | Latin capital letter Z with dot above             |
+ * | U+017C  | ż     | z           | Latin small letter z with dot above               |
+ * | U+017D  | Ž     | Z           | Latin capital letter Z with caron                 |
+ * | U+017E  | ž     | z           | Latin small letter z with caron                   |
+ * | U+017F  | ſ     | s           | Latin small letter long s                         |
+ * | U+01A0  | Ơ     | O           | Latin capital letter O with horn                  |
+ * | U+01A1  | ơ     | o           | Latin small letter o with horn                    |
+ * | U+01AF  | Ư     | U           | Latin capital letter U with horn                  |
+ * | U+01B0  | ư     | u           | Latin small letter u with horn                    |
+ * | U+01CD  | Ǎ     | A           | Latin capital letter A with caron                 |
+ * | U+01CE  | ǎ     | a           | Latin small letter a with caron                   |
+ * | U+01CF  | Ǐ     | I           | Latin capital letter I with caron                 |
+ * | U+01D0  | ǐ     | i           | Latin small letter i with caron                   |
+ * | U+01D1  | Ǒ     | O           | Latin capital letter O with caron                 |
+ * | U+01D2  | ǒ     | o           | Latin small letter o with caron                   |
+ * | U+01D3  | Ǔ     | U           | Latin capital letter U with caron                 |
+ * | U+01D4  | ǔ     | u           | Latin small letter u with caron                   |
+ * | U+01D5  | Ǖ     | U           | Latin capital letter U with diaeresis and macron  |
+ * | U+01D6  | ǖ     | u           | Latin small letter u with diaeresis and macron    |
+ * | U+01D7  | Ǘ     | U           | Latin capital letter U with diaeresis and acute   |
+ * | U+01D8  | ǘ     | u           | Latin small letter u with diaeresis and acute     |
+ * | U+01D9  | Ǚ     | U           | Latin capital letter U with diaeresis and caron   |
+ * | U+01DA  | ǚ     | u           | Latin small letter u with diaeresis and caron     |
+ * | U+01DB  | Ǜ     | U           | Latin capital letter U with diaeresis and grave   |
+ * | U+01DC  | ǜ     | u           | Latin small letter u with diaeresis and grave     |
+ *
+ * Decompositions for Latin Extended-B:
+ *
+ * |   Code   | Glyph | Replacement |                Description                |
+ * | -------- | ----- | ----------- | ----------------------------------------- |
+ * | U+0218   | Ș     | S           | Latin capital letter S with comma below   |
+ * | U+0219   | ș     | s           | Latin small letter s with comma below     |
+ * | U+021A   | Ț     | T           | Latin capital letter T with comma below   |
+ * | U+021B   | ț     | t           | Latin small letter t with comma below     |
+ *
+ * Vowels with diacritic (Chinese, Hanyu Pinyin):
+ *
+ * |   Code   | Glyph | Replacement |                      Description                      |
+ * | -------- | ----- | ----------- | ----------------------------------------------------- |
+ * | U+0251   | ɑ     | a           | Latin small letter alpha                              |
+ * | U+1EA0   | Ạ     | A           | Latin capital letter A with dot below                 |
+ * | U+1EA1   | ạ     | a           | Latin small letter a with dot below                   |
+ * | U+1EA2   | Ả     | A           | Latin capital letter A with hook above                |
+ * | U+1EA3   | ả     | a           | Latin small letter a with hook above                  |
+ * | U+1EA4   | Ấ     | A           | Latin capital letter A with circumflex and acute      |
+ * | U+1EA5   | ấ     | a           | Latin small letter a with circumflex and acute        |
+ * | U+1EA6   | Ầ     | A           | Latin capital letter A with circumflex and grave      |
+ * | U+1EA7   | ầ     | a           | Latin small letter a with circumflex and grave        |
+ * | U+1EA8   | Ẩ     | A           | Latin capital letter A with circumflex and hook above |
+ * | U+1EA9   | ẩ     | a           | Latin small letter a with circumflex and hook above   |
+ * | U+1EAA   | Ẫ     | A           | Latin capital letter A with circumflex and tilde      |
+ * | U+1EAB   | ẫ     | a           | Latin small letter a with circumflex and tilde        |
+ * | U+1EA6   | Ậ     | A           | Latin capital letter A with circumflex and dot below  |
+ * | U+1EAD   | ậ     | a           | Latin small letter a with circumflex and dot below    |
+ * | U+1EAE   | Ắ     | A           | Latin capital letter A with breve and acute           |
+ * | U+1EAF   | ắ     | a           | Latin small letter a with breve and acute             |
+ * | U+1EB0   | Ằ     | A           | Latin capital letter A with breve and grave           |
+ * | U+1EB1   | ằ     | a           | Latin small letter a with breve and grave             |
+ * | U+1EB2   | Ẳ     | A           | Latin capital letter A with breve and hook above      |
+ * | U+1EB3   | ẳ     | a           | Latin small letter a with breve and hook above        |
+ * | U+1EB4   | Ẵ     | A           | Latin capital letter A with breve and tilde           |
+ * | U+1EB5   | ẵ     | a           | Latin small letter a with breve and tilde             |
+ * | U+1EB6   | Ặ     | A           | Latin capital letter A with breve and dot below       |
+ * | U+1EB7   | ặ     | a           | Latin small letter a with breve and dot below         |
+ * | U+1EB8   | Ẹ     | E           | Latin capital letter E with dot below                 |
+ * | U+1EB9   | ẹ     | e           | Latin small letter e with dot below                   |
+ * | U+1EBA   | Ẻ     | E           | Latin capital letter E with hook above                |
+ * | U+1EBB   | ẻ     | e           | Latin small letter e with hook above                  |
+ * | U+1EBC   | Ẽ     | E           | Latin capital letter E with tilde                     |
+ * | U+1EBD   | ẽ     | e           | Latin small letter e with tilde                       |
+ * | U+1EBE   | Ế     | E           | Latin capital letter E with circumflex and acute      |
+ * | U+1EBF   | ế     | e           | Latin small letter e with circumflex and acute        |
+ * | U+1EC0   | Ề     | E           | Latin capital letter E with circumflex and grave      |
+ * | U+1EC1   | ề     | e           | Latin small letter e with circumflex and grave        |
+ * | U+1EC2   | Ể     | E           | Latin capital letter E with circumflex and hook above |
+ * | U+1EC3   | ể     | e           | Latin small letter e with circumflex and hook above   |
+ * | U+1EC4   | Ễ     | E           | Latin capital letter E with circumflex and tilde      |
+ * | U+1EC5   | ễ     | e           | Latin small letter e with circumflex and tilde        |
+ * | U+1EC6   | Ệ     | E           | Latin capital letter E with circumflex and dot below  |
+ * | U+1EC7   | ệ     | e           | Latin small letter e with circumflex and dot below    |
+ * | U+1EC8   | Ỉ     | I           | Latin capital letter I with hook above                |
+ * | U+1EC9   | ỉ     | i           | Latin small letter i with hook above                  |
+ * | U+1ECA   | Ị     | I           | Latin capital letter I with dot below                 |
+ * | U+1ECB   | ị     | i           | Latin small letter i with dot below                   |
+ * | U+1ECC   | Ọ     | O           | Latin capital letter O with dot below                 |
+ * | U+1ECD   | ọ     | o           | Latin small letter o with dot below                   |
+ * | U+1ECE   | Ỏ     | O           | Latin capital letter O with hook above                |
+ * | U+1ECF   | ỏ     | o           | Latin small letter o with hook above                  |
+ * | U+1ED0   | Ố     | O           | Latin capital letter O with circumflex and acute      |
+ * | U+1ED1   | ố     | o           | Latin small letter o with circumflex and acute        |
+ * | U+1ED2   | Ồ     | O           | Latin capital letter O with circumflex and grave      |
+ * | U+1ED3   | ồ     | o           | Latin small letter o with circumflex and grave        |
+ * | U+1ED4   | Ổ     | O           | Latin capital letter O with circumflex and hook above |
+ * | U+1ED5   | ổ     | o           | Latin small letter o with circumflex and hook above   |
+ * | U+1ED6   | Ỗ     | O           | Latin capital letter O with circumflex and tilde      |
+ * | U+1ED7   | ỗ     | o           | Latin small letter o with circumflex and tilde        |
+ * | U+1ED8   | Ộ     | O           | Latin capital letter O with circumflex and dot below  |
+ * | U+1ED9   | ộ     | o           | Latin small letter o with circumflex and dot below    |
+ * | U+1EDA   | Ớ     | O           | Latin capital letter O with horn and acute            |
+ * | U+1EDB   | ớ     | o           | Latin small letter o with horn and acute              |
+ * | U+1EDC   | Ờ     | O           | Latin capital letter O with horn and grave            |
+ * | U+1EDD   | ờ     | o           | Latin small letter o with horn and grave              |
+ * | U+1EDE   | Ở     | O           | Latin capital letter O with horn and hook above       |
+ * | U+1EDF   | ở     | o           | Latin small letter o with horn and hook above         |
+ * | U+1EE0   | Ỡ     | O           | Latin capital letter O with horn and tilde            |
+ * | U+1EE1   | ỡ     | o           | Latin small letter o with horn and tilde              |
+ * | U+1EE2   | Ợ     | O           | Latin capital letter O with horn and dot below        |
+ * | U+1EE3   | ợ     | o           | Latin small letter o with horn and dot below          |
+ * | U+1EE4   | Ụ     | U           | Latin capital letter U with dot below                 |
+ * | U+1EE5   | ụ     | u           | Latin small letter u with dot below                   |
+ * | U+1EE6   | Ủ     | U           | Latin capital letter U with hook above                |
+ * | U+1EE7   | ủ     | u           | Latin small letter u with hook above                  |
+ * | U+1EE8   | Ứ     | U           | Latin capital letter U with horn and acute            |
+ * | U+1EE9   | ứ     | u           | Latin small letter u with horn and acute              |
+ * | U+1EEA   | Ừ     | U           | Latin capital letter U with horn and grave            |
+ * | U+1EEB   | ừ     | u           | Latin small letter u with horn and grave              |
+ * | U+1EEC   | Ử     | U           | Latin capital letter U with horn and hook above       |
+ * | U+1EED   | ử     | u           | Latin small letter u with horn and hook above         |
+ * | U+1EEE   | Ữ     | U           | Latin capital letter U with horn and tilde            |
+ * | U+1EEF   | ữ     | u           | Latin small letter u with horn and tilde              |
+ * | U+1EF0   | Ự     | U           | Latin capital letter U with horn and dot below        |
+ * | U+1EF1   | ự     | u           | Latin small letter u with horn and dot below          |
+ * | U+1EF2   | Ỳ     | Y           | Latin capital letter Y with grave                     |
+ * | U+1EF3   | ỳ     | y           | Latin small letter y with grave                       |
+ * | U+1EF4   | Ỵ     | Y           | Latin capital letter Y with dot below                 |
+ * | U+1EF5   | ỵ     | y           | Latin small letter y with dot below                   |
+ * | U+1EF6   | Ỷ     | Y           | Latin capital letter Y with hook above                |
+ * | U+1EF7   | ỷ     | y           | Latin small letter y with hook above                  |
+ * | U+1EF8   | Ỹ     | Y           | Latin capital letter Y with tilde                     |
+ * | U+1EF9   | ỹ     | y           | Latin small letter y with tilde                       |
+ *
+ * German (`de_DE`), German formal (`de_DE_formal`), German (Switzerland) formal (`de_CH`),
+ * and German (Switzerland) informal (`de_CH_informal`) locales:
+ *
+ * |   Code   | Glyph | Replacement |               Description               |
+ * | -------- | ----- | ----------- | --------------------------------------- |
+ * | U+00C4   | Ä     | Ae          | Latin capital letter A with diaeresis   |
+ * | U+00E4   | ä     | ae          | Latin small letter a with diaeresis     |
+ * | U+00D6   | Ö     | Oe          | Latin capital letter O with diaeresis   |
+ * | U+00F6   | ö     | oe          | Latin small letter o with diaeresis     |
+ * | U+00DC   | Ü     | Ue          | Latin capital letter U with diaeresis   |
+ * | U+00FC   | ü     | ue          | Latin small letter u with diaeresis     |
+ * | U+00DF   | ß     | ss          | Latin small letter sharp s              |
+ *
+ * Danish (`da_DK`) locale:
+ *
+ * |   Code   | Glyph | Replacement |               Description               |
+ * | -------- | ----- | ----------- | --------------------------------------- |
+ * | U+00C6   | Æ     | Ae          | Latin capital letter AE                 |
+ * | U+00E6   | æ     | ae          | Latin small letter ae                   |
+ * | U+00D8   | Ø     | Oe          | Latin capital letter O with stroke      |
+ * | U+00F8   | ø     | oe          | Latin small letter o with stroke        |
+ * | U+00C5   | Å     | Aa          | Latin capital letter A with ring above  |
+ * | U+00E5   | å     | aa          | Latin small letter a with ring above    |
+ *
+ * Catalan (`ca`) locale:
+ *
+ * |   Code   | Glyph | Replacement |               Description               |
+ * | -------- | ----- | ----------- | --------------------------------------- |
+ * | U+00B7   | l·l   | ll          | Flown dot (between two Ls)              |
+ *
+ * Serbian (`sr_RS`) and Bosnian (`bs_BA`) locales:
+ *
+ * |   Code   | Glyph | Replacement |               Description               |
+ * | -------- | ----- | ----------- | --------------------------------------- |
+ * | U+0110   | Đ     | DJ          | Latin capital letter D with stroke      |
+ * | U+0111   | đ     | dj          | Latin small letter d with stroke        |
+ *
+ * @since 1.2.1
+ * @since 4.6.0 Added locale support for `de_CH`, `de_CH_informal`, and `ca`.
+ * @since 4.7.0 Added locale support for `sr_RS`.
+ * @since 4.8.0 Added locale support for `bs_BA`.
+ *
+ * @param string $string Text that might have accent characters
+ * @return string Filtered string with replaced "nice" characters.
+ */
+  private function remove_accents( $string ) {
+  	if ( ! preg_match( '/[\x80-\xff]/', $string ) ) {
+  		return $string;
+  	}
+
+  	if ( $this->seems_utf8( $string ) ) {
+  		$chars = array(
+  			// Decompositions for Latin-1 Supplement.
+  			'ª' => 'a',
+  			'º' => 'o',
+  			'À' => 'A',
+  			'Á' => 'A',
+  			'Â' => 'A',
+  			'Ã' => 'A',
+  			'Ä' => 'A',
+  			'Å' => 'A',
+  			'Æ' => 'AE',
+  			'Ç' => 'C',
+  			'È' => 'E',
+  			'É' => 'E',
+  			'Ê' => 'E',
+  			'Ë' => 'E',
+  			'Ì' => 'I',
+  			'Í' => 'I',
+  			'Î' => 'I',
+  			'Ï' => 'I',
+  			'Ð' => 'D',
+  			'Ñ' => 'N',
+  			'Ò' => 'O',
+  			'Ó' => 'O',
+  			'Ô' => 'O',
+  			'Õ' => 'O',
+  			'Ö' => 'O',
+  			'Ù' => 'U',
+  			'Ú' => 'U',
+  			'Û' => 'U',
+  			'Ü' => 'U',
+  			'Ý' => 'Y',
+  			'Þ' => 'TH',
+  			'ß' => 's',
+  			'à' => 'a',
+  			'á' => 'a',
+  			'â' => 'a',
+  			'ã' => 'a',
+  			'ä' => 'a',
+  			'å' => 'a',
+  			'æ' => 'ae',
+  			'ç' => 'c',
+  			'è' => 'e',
+  			'é' => 'e',
+  			'ê' => 'e',
+  			'ë' => 'e',
+  			'ì' => 'i',
+  			'í' => 'i',
+  			'î' => 'i',
+  			'ï' => 'i',
+  			'ð' => 'd',
+  			'ñ' => 'n',
+  			'ò' => 'o',
+  			'ó' => 'o',
+  			'ô' => 'o',
+  			'õ' => 'o',
+  			'ö' => 'o',
+  			'ø' => 'o',
+  			'ù' => 'u',
+  			'ú' => 'u',
+  			'û' => 'u',
+  			'ü' => 'u',
+  			'ý' => 'y',
+  			'þ' => 'th',
+  			'ÿ' => 'y',
+  			'Ø' => 'O',
+  			// Decompositions for Latin Extended-A.
+  			'Ā' => 'A',
+  			'ā' => 'a',
+  			'Ă' => 'A',
+  			'ă' => 'a',
+  			'Ą' => 'A',
+  			'ą' => 'a',
+  			'Ć' => 'C',
+  			'ć' => 'c',
+  			'Ĉ' => 'C',
+  			'ĉ' => 'c',
+  			'Ċ' => 'C',
+  			'ċ' => 'c',
+  			'Č' => 'C',
+  			'č' => 'c',
+  			'Ď' => 'D',
+  			'ď' => 'd',
+  			'Đ' => 'D',
+  			'đ' => 'd',
+  			'Ē' => 'E',
+  			'ē' => 'e',
+  			'Ĕ' => 'E',
+  			'ĕ' => 'e',
+  			'Ė' => 'E',
+  			'ė' => 'e',
+  			'Ę' => 'E',
+  			'ę' => 'e',
+  			'Ě' => 'E',
+  			'ě' => 'e',
+  			'Ĝ' => 'G',
+  			'ĝ' => 'g',
+  			'Ğ' => 'G',
+  			'ğ' => 'g',
+  			'Ġ' => 'G',
+  			'ġ' => 'g',
+  			'Ģ' => 'G',
+  			'ģ' => 'g',
+  			'Ĥ' => 'H',
+  			'ĥ' => 'h',
+  			'Ħ' => 'H',
+  			'ħ' => 'h',
+  			'Ĩ' => 'I',
+  			'ĩ' => 'i',
+  			'Ī' => 'I',
+  			'ī' => 'i',
+  			'Ĭ' => 'I',
+  			'ĭ' => 'i',
+  			'Į' => 'I',
+  			'į' => 'i',
+  			'İ' => 'I',
+  			'ı' => 'i',
+  			'IJ' => 'IJ',
+  			'ij' => 'ij',
+  			'Ĵ' => 'J',
+  			'ĵ' => 'j',
+  			'Ķ' => 'K',
+  			'ķ' => 'k',
+  			'ĸ' => 'k',
+  			'Ĺ' => 'L',
+  			'ĺ' => 'l',
+  			'Ļ' => 'L',
+  			'ļ' => 'l',
+  			'Ľ' => 'L',
+  			'ľ' => 'l',
+  			'Ŀ' => 'L',
+  			'ŀ' => 'l',
+  			'Ł' => 'L',
+  			'ł' => 'l',
+  			'Ń' => 'N',
+  			'ń' => 'n',
+  			'Ņ' => 'N',
+  			'ņ' => 'n',
+  			'Ň' => 'N',
+  			'ň' => 'n',
+  			'ʼn' => 'n',
+  			'Ŋ' => 'N',
+  			'ŋ' => 'n',
+  			'Ō' => 'O',
+  			'ō' => 'o',
+  			'Ŏ' => 'O',
+  			'ŏ' => 'o',
+  			'Ő' => 'O',
+  			'ő' => 'o',
+  			'Œ' => 'OE',
+  			'œ' => 'oe',
+  			'Ŕ' => 'R',
+  			'ŕ' => 'r',
+  			'Ŗ' => 'R',
+  			'ŗ' => 'r',
+  			'Ř' => 'R',
+  			'ř' => 'r',
+  			'Ś' => 'S',
+  			'ś' => 's',
+  			'Ŝ' => 'S',
+  			'ŝ' => 's',
+  			'Ş' => 'S',
+  			'ş' => 's',
+  			'Š' => 'S',
+  			'š' => 's',
+  			'Ţ' => 'T',
+  			'ţ' => 't',
+  			'Ť' => 'T',
+  			'ť' => 't',
+  			'Ŧ' => 'T',
+  			'ŧ' => 't',
+  			'Ũ' => 'U',
+  			'ũ' => 'u',
+  			'Ū' => 'U',
+  			'ū' => 'u',
+  			'Ŭ' => 'U',
+  			'ŭ' => 'u',
+  			'Ů' => 'U',
+  			'ů' => 'u',
+  			'Ű' => 'U',
+  			'ű' => 'u',
+  			'Ų' => 'U',
+  			'ų' => 'u',
+  			'Ŵ' => 'W',
+  			'ŵ' => 'w',
+  			'Ŷ' => 'Y',
+  			'ŷ' => 'y',
+  			'Ÿ' => 'Y',
+  			'Ź' => 'Z',
+  			'ź' => 'z',
+  			'Ż' => 'Z',
+  			'ż' => 'z',
+  			'Ž' => 'Z',
+  			'ž' => 'z',
+  			'ſ' => 's',
+  			// Decompositions for Latin Extended-B.
+  			'Ș' => 'S',
+  			'ș' => 's',
+  			'Ț' => 'T',
+  			'ț' => 't',
+  			// Euro sign.
+  			'€' => 'E',
+  			// GBP (Pound) sign.
+  			'£' => '',
+  			// Vowels with diacritic (Vietnamese).
+  			// Unmarked.
+  			'Ơ' => 'O',
+  			'ơ' => 'o',
+  			'Ư' => 'U',
+  			'ư' => 'u',
+  			// Grave accent.
+  			'Ầ' => 'A',
+  			'ầ' => 'a',
+  			'Ằ' => 'A',
+  			'ằ' => 'a',
+  			'Ề' => 'E',
+  			'ề' => 'e',
+  			'Ồ' => 'O',
+  			'ồ' => 'o',
+  			'Ờ' => 'O',
+  			'ờ' => 'o',
+  			'Ừ' => 'U',
+  			'ừ' => 'u',
+  			'Ỳ' => 'Y',
+  			'ỳ' => 'y',
+  			// Hook.
+  			'Ả' => 'A',
+  			'ả' => 'a',
+  			'Ẩ' => 'A',
+  			'ẩ' => 'a',
+  			'Ẳ' => 'A',
+  			'ẳ' => 'a',
+  			'Ẻ' => 'E',
+  			'ẻ' => 'e',
+  			'Ể' => 'E',
+  			'ể' => 'e',
+  			'Ỉ' => 'I',
+  			'ỉ' => 'i',
+  			'Ỏ' => 'O',
+  			'ỏ' => 'o',
+  			'Ổ' => 'O',
+  			'ổ' => 'o',
+  			'Ở' => 'O',
+  			'ở' => 'o',
+  			'Ủ' => 'U',
+  			'ủ' => 'u',
+  			'Ử' => 'U',
+  			'ử' => 'u',
+  			'Ỷ' => 'Y',
+  			'ỷ' => 'y',
+  			// Tilde.
+  			'Ẫ' => 'A',
+  			'ẫ' => 'a',
+  			'Ẵ' => 'A',
+  			'ẵ' => 'a',
+  			'Ẽ' => 'E',
+  			'ẽ' => 'e',
+  			'Ễ' => 'E',
+  			'ễ' => 'e',
+  			'Ỗ' => 'O',
+  			'ỗ' => 'o',
+  			'Ỡ' => 'O',
+  			'ỡ' => 'o',
+  			'Ữ' => 'U',
+  			'ữ' => 'u',
+  			'Ỹ' => 'Y',
+  			'ỹ' => 'y',
+  			// Acute accent.
+  			'Ấ' => 'A',
+  			'ấ' => 'a',
+  			'Ắ' => 'A',
+  			'ắ' => 'a',
+  			'Ế' => 'E',
+  			'ế' => 'e',
+  			'Ố' => 'O',
+  			'ố' => 'o',
+  			'Ớ' => 'O',
+  			'ớ' => 'o',
+  			'Ứ' => 'U',
+  			'ứ' => 'u',
+  			// Dot below.
+  			'Ạ' => 'A',
+  			'ạ' => 'a',
+  			'Ậ' => 'A',
+  			'ậ' => 'a',
+  			'Ặ' => 'A',
+  			'ặ' => 'a',
+  			'Ẹ' => 'E',
+  			'ẹ' => 'e',
+  			'Ệ' => 'E',
+  			'ệ' => 'e',
+  			'Ị' => 'I',
+  			'ị' => 'i',
+  			'Ọ' => 'O',
+  			'ọ' => 'o',
+  			'Ộ' => 'O',
+  			'ộ' => 'o',
+  			'Ợ' => 'O',
+  			'ợ' => 'o',
+  			'Ụ' => 'U',
+  			'ụ' => 'u',
+  			'Ự' => 'U',
+  			'ự' => 'u',
+  			'Ỵ' => 'Y',
+  			'ỵ' => 'y',
+  			// Vowels with diacritic (Chinese, Hanyu Pinyin).
+  			'ɑ' => 'a',
+  			// Macron.
+  			'Ǖ' => 'U',
+  			'ǖ' => 'u',
+  			// Acute accent.
+  			'Ǘ' => 'U',
+  			'ǘ' => 'u',
+  			// Caron.
+  			'Ǎ' => 'A',
+  			'ǎ' => 'a',
+  			'Ǐ' => 'I',
+  			'ǐ' => 'i',
+  			'Ǒ' => 'O',
+  			'ǒ' => 'o',
+  			'Ǔ' => 'U',
+  			'ǔ' => 'u',
+  			'Ǚ' => 'U',
+  			'ǚ' => 'u',
+  			// Grave accent.
+  			'Ǜ' => 'U',
+  			'ǜ' => 'u',
+  		);
+
+  		$string = strtr( $string, $chars );
+  	} else {
+  		$chars = array();
+  		// Assume ISO-8859-1 if not UTF-8.
+  		$chars['in'] = "\x80\x83\x8a\x8e\x9a\x9e"
+  			. "\x9f\xa2\xa5\xb5\xc0\xc1\xc2"
+  			. "\xc3\xc4\xc5\xc7\xc8\xc9\xca"
+  			. "\xcb\xcc\xcd\xce\xcf\xd1\xd2"
+  			. "\xd3\xd4\xd5\xd6\xd8\xd9\xda"
+  			. "\xdb\xdc\xdd\xe0\xe1\xe2\xe3"
+  			. "\xe4\xe5\xe7\xe8\xe9\xea\xeb"
+  			. "\xec\xed\xee\xef\xf1\xf2\xf3"
+  			. "\xf4\xf5\xf6\xf8\xf9\xfa\xfb"
+  			. "\xfc\xfd\xff";
+
+  		$chars['out'] = 'EfSZszYcYuAAAAAACEEEEIIIINOOOOOOUUUUYaaaaaaceeeeiiiinoooooouuuuyy';
+
+  		$string              = strtr( $string, $chars['in'], $chars['out'] );
+  		$double_chars        = array();
+  		$double_chars['in']  = array( "\x8c", "\x9c", "\xc6", "\xd0", "\xde", "\xdf", "\xe6", "\xf0", "\xfe" );
+  		$double_chars['out'] = array( 'OE', 'oe', 'AE', 'DH', 'TH', 'ss', 'ae', 'dh', 'th' );
+  		$string              = str_replace( $double_chars['in'], $double_chars['out'], $string );
+  	}
+
+  	return $string;
+  }
+
+  private function seems_utf8( $str ) {
+    $this->mbstring_binary_safe_encoding();
+    $length = strlen( $str );
+    $this->mbstring_binary_safe_encoding(true);
+    for ( $i = 0; $i < $length; $i++ ) {
+        $c = ord( $str[ $i ] );
+        if ( $c < 0x80 ) {
+            $n = 0; // 0bbbbbbb
+        } elseif ( ( $c & 0xE0 ) == 0xC0 ) {
+            $n = 1; // 110bbbbb
+        } elseif ( ( $c & 0xF0 ) == 0xE0 ) {
+            $n = 2; // 1110bbbb
+        } elseif ( ( $c & 0xF8 ) == 0xF0 ) {
+            $n = 3; // 11110bbb
+        } elseif ( ( $c & 0xFC ) == 0xF8 ) {
+            $n = 4; // 111110bb
+        } elseif ( ( $c & 0xFE ) == 0xFC ) {
+            $n = 5; // 1111110b
+        } else {
+            return false; // Does not match any model.
+        }
+        for ( $j = 0; $j < $n; $j++ ) { // n bytes matching 10bbbbbb follow ?
+            if ( ( ++$i == $length ) || ( ( ord( $str[ $i ] ) & 0xC0 ) != 0x80 ) ) {
+                return false;
+            }
+        }
+    }
+    return true;
+  }
+
+  private function mbstring_binary_safe_encoding( $reset = false ) {
+      static $encodings  = array();
+      static $overloaded = null;
+
+      if ( is_null( $overloaded ) ) {
+          $overloaded = function_exists( 'mb_internal_encoding' ) && ( ini_get( 'mbstring.func_overload' ) & 2 ); // phpcs:ignore PHPCompatibility.IniDirectives.RemovedIniDirectives.mbstring_func_overloadDeprecated
+      }
+
+      if ( false === $overloaded ) {
+          return;
+      }
+
+      if ( ! $reset ) {
+          $encoding = mb_internal_encoding();
+          array_push( $encodings, $encoding );
+          mb_internal_encoding( 'ISO-8859-1' );
+      }
+
+      if ( $reset && $encodings ) {
+          $encoding = array_pop( $encodings );
+          mb_internal_encoding( $encoding );
+      }
+  }
 }