Change regional language codes (#8065)

* Change regional language codes

According to `ISO-639-1` and `ISO-3166-1 alpha-2` recommendations, regional
languages must be written with the language code in lowercase and the region
in uppercase. For instance, we should have `en-US` instead of `en-us`.

Folders have been updated to reflect those recommendations and regional
language codes have been updated in the translation files.

* Update README files

* Fix configuration for typos

* Revert language order in documentation

* Remove unnecessary code

* Change language configuration getter

* Fix phpstan error

* Fix typo

* Add types

* escape regex

* Move language logic to avoid magic or deprecated methods

* Minor fix on regex

9 files changed, 1673 insertions, 0 deletions

diff --git a/app/i18n/zh-TW/admin.php b/app/i18n/zh-TW/admin.php
new file mode 100644
index 000000000..e19660e39
--- /dev/null
+++ b/app/i18n/zh-TW/admin.php
@@ -0,0 +1,240 @@
+<?php
+
+/******************************************************************************
+ * Each entry of that file can be associated with a comment to indicate its   *
+ * state. When there is no comment, it means the entry is fully translated.   *
+ * The recognized comments are (comment matching is case-insensitive):        *
+ *   + TODO: the entry has never been translated.                             *
+ *   + DIRTY: the entry has been translated but needs to be updated.          *
+ *   + IGNORE: the entry does not need to be translated.                      *
+ * When a comment is not recognized, it is discarded.                         *
+ ******************************************************************************/
+
+return array(
+	'auth' => array(
+		'allow_anonymous' => '允許匿名閱讀預設使用者（%s）的文章',
+		'allow_anonymous_refresh' => '允許匿名刷新文章',
+		'api_enabled' => '允許 <abbr>API</abbr> 訪問 <small>（用於手機應用 and sharing user queries）</small>',	// DIRTY
+		'form' => '網頁表單（傳統方式, 需要 JavaScript)',
+		'http' => 'HTTP (advanced: managed by Web server, OIDC, SSO…)',	// TODO
+		'none' => '無認證（危險）',
+		'title' => '認證',
+		'token' => '主要驗證權杖',
+		'token_help' => '允許存取使用者的所有 RSS 輸出以及重整源而無需身份驗證:',
+		'type' => '認證方式',
+		'unsafe_autologin' => '允許不安全的自動登入方式：',
+	),
+	'check_install' => array(
+		'cache' => array(
+			'nok' => '請檢查 <em>./data/cache</em> 目錄權限。HTTP 伺服器必須有其寫入權限。',
+			'ok' => 'cache 目錄權限正常',
+		),
+		'categories' => array(
+			'nok' => 'Category 表配置錯誤',
+			'ok' => 'Category 表正常',
+		),
+		'connection' => array(
+			'nok' => '資料庫連接失敗',
+			'ok' => '資料庫連接正常',
+		),
+		'ctype' => array(
+			'nok' => '找不到字元類型檢測庫（php-ctype）',
+			'ok' => '已找到字元類型檢測庫 （php-ctype）',
+		),
+		'curl' => array(
+			'nok' => '找不到 cURL 庫(php-cURL)',
+			'ok' => '已找到 cURL 庫(php-cURL)',
+		),
+		'data' => array(
+			'nok' => '請檢查 <em>./data</em> 目錄權限。HTTP 伺服器必須有其寫入權限。',
+			'ok' => 'data 目錄權限正常',
+		),
+		'database' => '資料庫相關',
+		'dom' => array(
+			'nok' => '找不到用於瀏覽 DOM 的庫（php-xml）',
+			'ok' => '已找到用於瀏覽 DOM 的庫(php-xml)',
+		),
+		'entries' => array(
+			'nok' => 'Entry 表配置錯誤',
+			'ok' => 'Entry 表正常',
+		),
+		'favicons' => array(
+			'nok' => '請檢查 <em>./data/favicons</em> 目錄權限。HTTP 伺服器必須有其寫入權限。',
+			'ok' => 'favicons 目錄權限正常',
+		),
+		'feeds' => array(
+			'nok' => 'Feed 表配置錯誤',
+			'ok' => 'Feed 表正常',
+		),
+		'fileinfo' => array(
+			'nok' => '找不到 fileinfo 庫（php-fileinfo）',
+			'ok' => '已找到 fileinfo 庫(php-fileinfo)',
+		),
+		'files' => '文件相關',
+		'json' => array(
+			'nok' => '找不到 JSON 擴展（php-json ）',
+			'ok' => '已找到 JSON 擴展(php-json)',
+		),
+		'mbstring' => array(
+			'nok' => '找不到推薦的 Unicode 解析庫（mbstring)',
+			'ok' => '已找到推薦的 Unicode 解析庫（mbstring)',
+		),
+		'pcre' => array(
+			'nok' => '找不到正則表達式解析庫（php-pcre）',
+			'ok' => '已找到正則表達式解析庫（php-pcre）',
+		),
+		'pdo' => array(
+			'nok' => '找不到 PDO 或支持的驅動（pdo_mysql、pdo_sqlite、pdo_pgsql）',
+			'ok' => '已找到 PDO 和支持的至少一種驅動（pdo_mysql、pdo_sqlite、pdo_pgsql）',
+		),
+		'php' => array(
+			'_' => 'PHP 相關',
+			'nok' => '你的 PHP 版本為 %s，但 FreshRSS 最低需要 %s',
+			'ok' => '你的 PHP 版本為 %s，與 FreshRSS 相容',
+		),
+		'tables' => array(
+			'nok' => '資料庫中缺少一個或多個表',
+			'ok' => '資料庫中相關表存在',
+		),
+		'title' => '環境檢查',
+		'tokens' => array(
+			'nok' => '請檢查 <em>./data/tokens</em> 目錄權限。HTTP 伺服器必須有其寫入權限。',
+			'ok' => 'tokens 目錄權限正常',
+		),
+		'users' => array(
+			'nok' => '請檢查 <em>./data/users</em> 目錄權限。HTTP 伺服器必須有其寫入權限。',
+			'ok' => 'users 目錄權限正常',
+		),
+		'zip' => array(
+			'nok' => '找不到 ZIP 擴展（php-zip）',
+			'ok' => '已找到 ZIP 擴展',
+		),
+	),
+	'extensions' => array(
+		'author' => '作者',
+		'community' => '可用的社群擴充功能',
+		'description' => '描述',
+		'disabled' => '已禁用',
+		'empty_list' => '沒有已安裝的擴充功能',
+		'empty_list_help' => 'Check the logs to determine the reason behind the empty extension list.',	// TODO
+		'enabled' => '已啟用',
+		'latest' => '已安裝',
+		'name' => '名稱',
+		'no_configure_view' => '此擴充功能不能配置。',
+		'system' => array(
+			'_' => '系統擴充功能',
+			'no_rights' => '系統擴充功能（你無權修改）',
+		),
+		'title' => '擴充功能',
+		'update' => '更新可用',
+		'user' => '用戶擴充功能',
+		'version' => '版本',
+	),
+	'stats' => array(
+		'_' => '統計',
+		'all_feeds' => '所有訂閱源',
+		'category' => '分類',
+		'entry_count' => '文章數',
+		'entry_per_category' => '各分類文章數',
+		'entry_per_day' => '近三十日每日文章數',
+		'entry_per_day_of_week' => '一週各日（平均：%.2f 條消息)',
+		'entry_per_hour' => '各小時（平均：%.2f 條消息)',
+		'entry_per_month' => '各月（平均：%.2f 條消息)',
+		'entry_repartition' => '文章分布',
+		'feed' => '訂閱源',
+		'feed_per_category' => '各分類訂閱源數',
+		'idle' => '長期無更新訂閱源',
+		'main' => '主要統計',
+		'main_stream' => '首頁',
+		'no_idle' => '訂閱源近期皆有更新！',
+		'number_entries' => '%d 篇文章',
+		'overview' => 'Overview',	// TODO
+		'percent_of_total' => '%',
+		'repartition' => '文章分布: %s',	// DIRTY
+		'status_favorites' => '收藏',
+		'status_read' => '已讀',
+		'status_total' => '總計',
+		'status_unread' => '未讀',
+		'title' => '統計',
+		'top_feed' => '前十訂閱源',
+	),
+	'system' => array(
+		'_' => '系統配置',
+		'auto-update-url' => '自動升級伺服器地址',
+		'base-url' => array(
+			'_' => '基本URL',
+			'recommendation' => '自動推薦: <kbd>%s</kbd>',
+		),
+		'cookie-duration' => array(
+			'help' => '單位（秒）',
+			'number' => '保持登錄的時長',
+		),
+		'force_email_validation' => '強制驗證郵箱地址',
+		'instance-name' => '實例名稱',
+		'max-categories' => '各使用者分類數限制',
+		'max-feeds' => '各使用者訂閱源數限制',
+		'registration' => array(
+			'number' => '最大使用者數',
+			'select' => array(
+				'label' => '註冊表單',
+				'option' => array(
+					'noform' => '禁用，無註冊表單',
+					'nolimit' => '啟用，且無帳號限制',
+					'setaccountsnumber' => '設置使用者數的最大值',
+				),
+			),
+			'status' => array(
+				'disabled' => '註冊表單禁用',
+				'enabled' => '註冊表單啟用',
+			),
+			'title' => '使用者註冊表單',
+		),
+		'sensitive-parameter' => '敏感參數。手動編輯於 <kbd>./data/config.php</kbd>',
+		'tos' => array(
+			'disabled' => '未被給予',
+			'enabled' => '<a href="./?a=tos">為啟用的</a>',
+			'help' => '如何 <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">啟用服務條款</a>',
+		),
+		'websub' => array(
+			'help' => '關於 <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',
+		),
+	),
+	'update' => array(
+		'_' => '更新系統',
+		'apply' => '應用',
+		'changelog' => '更新紀錄',
+		'check' => '檢查更新',
+		'copiedFromURL' => 'update.php 複製從 %s 至 ./data',
+		'current_version' => '當前 版本為',
+		'last' => '上次檢查',
+		'loading' => '更新中…',
+		'none' => '沒有可用更新',
+		'releaseChannel' => array(
+			'_' => '發佈通道',
+			'edge' => '滾動式發佈(“edge”)',
+			'latest' => '穩定式發佈(“latest”)',
+		),
+		'title' => '系統更新',
+		'viaGit' => '從git並由GitHub.com開始',
+	),
+	'user' => array(
+		'admin' => '管理員',
+		'article_count' => '文章數',
+		'back_to_manage' => '← 返回使用者列表',
+		'create' => '新增使用者',
+		'database_size' => '資料庫大小',
+		'email' => '郵箱地址',
+		'enabled' => '已啟用',
+		'feed_count' => '訂閱源數',
+		'is_admin' => '管理員',
+		'language' => '語言',
+		'last_user_activity' => '上次使用者活躍',
+		'list' => '使用者列表',
+		'number' => '已有 %d 個使用者',
+		'numbers' => '已有 %d 個使用者',
+		'password_form' => '密碼<br /><small>（用於網頁表單登錄方式）</small>',
+		'password_format' => '至少 7 個字元',
+		'title' => '使用者管理',
+		'username' => '使用者名稱',
+	),
+);
diff --git a/app/i18n/zh-TW/api.php b/app/i18n/zh-TW/api.php
new file mode 100644
index 000000000..0021dfa98
--- /dev/null
+++ b/app/i18n/zh-TW/api.php
@@ -0,0 +1,33 @@
+<?php
+
+/******************************************************************************
+ * Each entry of that file can be associated with a comment to indicate its   *
+ * state. When there is no comment, it means the entry is fully translated.   *
+ * The recognized comments are (comment matching is case-insensitive):        *
+ *   + TODO: the entry has never been translated.                             *
+ *   + DIRTY: the entry has been translated but needs to be updated.          *
+ *   + IGNORE: the entry does not need to be translated.                      *
+ * When a comment is not recognized, it is discarded.                         *
+ ******************************************************************************/
+
+return array(
+	'information' => array(
+		'address' => 'Your API address:',	// TODO
+		'output' => array(
+			'encoding-support' => '⚠️ WARN: no <code>%2F</code> support, some clients might not work!',	// TODO
+			'invalid-configuration' => '⚠️ WARN: Probable invalid base URL in ./data/config.php',	// TODO
+			'pass' => '✔️ PASS',	// TODO
+			'unknown-error' => '❌ ',	// TODO
+		),
+		'test' => array(
+			'fever' => 'Fever API configuration test:',	// TODO
+			'greader' => 'Google Reader API configuration test:',	// TODO
+		),
+		'title' => array(
+			'_' => 'FreshRSS API endpoints',	// TODO
+			'extension' => 'API for extensions',	// TODO
+			'fever' => 'Fever compatible API',	// TODO
+			'greader' => 'Google Reader compatible API',	// TODO
+		),
+	),
+);
diff --git a/app/i18n/zh-TW/conf.php b/app/i18n/zh-TW/conf.php
new file mode 100644
index 000000000..ac83b7c1f
--- /dev/null
+++ b/app/i18n/zh-TW/conf.php
@@ -0,0 +1,372 @@
+<?php
+
+/******************************************************************************
+ * Each entry of that file can be associated with a comment to indicate its   *
+ * state. When there is no comment, it means the entry is fully translated.   *
+ * The recognized comments are (comment matching is case-insensitive):        *
+ *   + TODO: the entry has never been translated.                             *
+ *   + DIRTY: the entry has been translated but needs to be updated.          *
+ *   + IGNORE: the entry does not need to be translated.                      *
+ * When a comment is not recognized, it is discarded.                         *
+ ******************************************************************************/
+
+return array(
+	'archiving' => array(
+		'_' => '歸檔',
+		'exception' => '高級清理策略',
+		'help' => '具體選項位於各訂閱源的設置',
+		'keep_favourites' => '不清理已收藏的文章',
+		'keep_labels' => '不清理標籤',
+		'keep_max' => '最多保留的文章數',	// DIRTY
+		'keep_min_by_feed' => '至少保留的文章數',
+		'keep_period' => '文章最多保留',
+		'keep_unreads' => '不清理未讀文章',
+		'maintenance' => '優化',
+		'optimize' => '優化資料庫',
+		'optimize_help' => '偶爾執行優化可以減少資料庫大小',
+		'policy' => '清理策略',
+		'policy_warning' => '如果未選擇清理策略，則將保留全部文章。',
+		'purge_now' => '立即清除',
+		'title' => '存檔',
+		'ttl' => '最小自動刷新間隔',
+	),
+	'display' => array(
+		'_' => '顯示',
+		'darkMode' => array(
+			'_' => '自動黑暗模式',
+			'auto' => '自動',
+			'help' => '僅適用於相容主題',
+			'no' => '否',
+		),
+		'icon' => array(
+			'bottom_line' => '底欄',
+			'display_authors' => '作者',
+			'entry' => '文章圖示',
+			'publication_date' => '更新日期',
+			'related_tags' => '相關標籤',
+			'sharing' => '分享',
+			'summary' => '摘要',
+			'top_line' => '頂欄',
+		),
+		'language' => '語言',
+		'notif_html5' => array(
+			'seconds' => '秒（0 表示不超時）',
+			'timeout' => 'HTML5 通知超時時間',
+		),
+		'show_nav_buttons' => '顯示導航按鈕',
+		'theme' => array(
+			'_' => '主題',
+			'deprecated' => array(
+				'_' => '已廢棄',
+				'description' => '此主題不再被支援且將不再可用在 <a href="https://freshrss.github.io/FreshRSS/en/users/05_Configuration.html#theme" target="_blank">未來FreshRSS的更新</a>',
+			),
+		),
+		'theme_not_available' => '“%s” 主題不再可用，請選擇其他主題。',
+		'thumbnail' => array(
+			'label' => '縮圖',
+			'landscape' => '風景',
+			'none' => '無',
+			'portrait' => '肖像',
+			'square' => '方塊',
+		),
+		'timezone' => '時區',
+		'title' => '顯示',
+		'website' => array(
+			'full' => '圖示及名稱',
+			'icon' => '僅圖示',
+			'label' => '網站',
+			'name' => '僅名稱',
+			'none' => '無',
+		),
+		'width' => array(
+			'content' => '內容寬度',
+			'large' => '寬',
+			'medium' => '中',
+			'no_limit' => '無限制',
+			'thin' => '窄',
+		),
+	),
+	'logs' => array(
+		'loglist' => array(
+			'level' => '日誌等級',
+			'message' => '訊息',
+			'timestamp' => '時間',
+		),
+		'pagination' => array(
+			'first' => '首頁',
+			'last' => '末頁',
+			'next' => '下一頁',
+			'previous' => '上一頁',
+		),
+	),
+	'mark_read_button' => array(
+		'_' => '“Mark all as read” button',	// TODO
+		'big' => 'Big',	// TODO
+		'none' => 'None',	// TODO
+		'small' => 'Small',	// TODO
+	),
+	'notification_timeout' => array(
+		'bad' => array(
+			'label' => 'Show warning banner',	// TODO
+			'seconds' => 'seconds (at least 1)',	// TODO
+		),
+		'good' => array(
+			'label' => 'Show acknowledgement banner',	// TODO
+			'seconds' => 'seconds (0 means not shown)',	// TODO
+		),
+	),
+	'privacy' => array(
+		'_' => 'Privacy',	// TODO
+		'retrieve_extension_list' => 'Retrieve extension list',	// TODO
+	),
+	'profile' => array(
+		'_' => '個人資料管理',
+		'api' => array(
+			'_' => 'API 管理',
+			'api_not_set' => 'API password not set',	// TODO
+			'api_set' => 'API password set',	// TODO
+			'check_link' => 'Check API status via: <kbd><a href="../api/" target="_blank">%s</a></kbd>',	// TODO
+			'disabled' => 'The API access is disabled.',	// TODO
+			'documentation_link' => 'See the <a href="https://freshrss.github.io/FreshRSS/en/users/06_Mobile_access.html#access-via-mobile-app" target="_blank">documentation and list of known apps</a>',	// TODO
+			'help' => 'See <a href="http://freshrss.github.io/FreshRSS/en/users/06_Mobile_access.html#access-via-mobile-app" target=_blank>documentation</a>',	// TODO
+		),
+		'change_password' => 'Change password',	// TODO
+		'confirm_new_password' => 'Confirm new password',	// TODO
+		'current_password' => 'Current password<br /><small>(for the Web-form login method)</small>',	// TODO
+		'delete' => array(
+			'_' => '帳號刪除',
+			'warn' => '你的帳號及所有相關資料將被刪除。',
+		),
+		'email' => '郵箱地址',
+		'new_password' => 'New password',	// TODO
+		'password_api' => 'API 密碼<br /><small>（例如用於手機應用）</small>',
+		'password_format' => '至少 7 個字元',
+		'title' => '個人資料',
+	),
+	'query' => array(
+		'_' => '自定義查詢',
+		'deprecated' => '此查詢不再有效。相關的分類或訂閱源已被刪除。',
+		'description' => 'Description',	// TODO
+		'filter' => array(
+			'_' => '生效的過濾器：',
+			'categories' => '按分類顯示',
+			'feeds' => '按訂閱源顯示',
+			'order' => '按日期排序',
+			'search' => '表達式',
+			'shareOpml' => '啟用透過對應類別和源的OPML分享',
+			'shareRss' => '啟用透過HTML分享 &amp; RSS',
+			'state' => '狀態',
+			'tags' => '按標籤顯示',
+			'type' => '類型',
+		),
+		'get_A' => 'Show all feeds, also those shown in their category',	// TODO
+		'get_Z' => 'Show all feeds, also archived ones',	// TODO
+		'get_all' => '顯示所有文章',
+		'get_all_labels' => '顯示任何標籤的文章',
+		'get_category' => '顯示分類 “%s”',
+		'get_favorite' => '顯示收藏文章',
+		'get_feed' => '顯示訂閱源 “%s”',
+		'get_important' => '顯示來自重要源的文章',
+		'get_label' => '顯示帶有 “%s” 標籤的文章',
+		'help' => '請參閱 <a href="https://freshrss.github.io/FreshRSS/en/users/user_queries.html" target="_blank">有關使用者查詢和透過 HTML / RSS / OPML 重新共用的文件</a>.',
+		'image_url' => '影像網址',
+		'name' => '名稱',
+		'no_filter' => '無過濾器',
+		'no_queries' => array(
+			'_' => 'No user queries are saved yet.',	// TODO
+			'help' => 'See <a href="https://freshrss.github.io/FreshRSS/en/users/user_queries.html" target="_blank">documentation</a>',	// TODO
+		),
+		'number' => '查詢 n°%d',
+		'order_asc' => '由舊至新顯示文章',
+		'order_desc' => '由新至舊顯示文章',
+		'search' => '搜尋 “%s”',
+		'share' => array(
+			'_' => '透過連結分享此查詢',
+			'disabled' => array(
+				'_' => 'disabled',	// TODO
+				'title' => 'Sharing',	// TODO
+			),
+			'greader' => 'GReader JSON的可共享連結',
+			'help' => '如果您想與任何人分享此查詢，請提供此連結',
+			'html' => 'HTML頁面的可共享連結',
+			'opml' => 'OPML源列表的可共享連結',
+			'rss' => 'RSS源的可共享連結',
+		),
+		'state_0' => '顯示所有文章',
+		'state_1' => '顯示已讀文章',
+		'state_2' => '顯示未讀文章',
+		'state_3' => '顯示所有文章',
+		'state_4' => '顯示收藏文章',
+		'state_5' => '顯示已讀的收藏文章',
+		'state_6' => '顯示未讀的收藏文章',
+		'state_7' => '顯示收藏文章',
+		'state_8' => '顯示未收藏文章',
+		'state_9' => '顯示已讀的未收藏文章',
+		'state_10' => '顯示未讀的未收藏文章',
+		'state_11' => '顯示未收藏文章',
+		'state_12' => '顯示所有文章',
+		'state_13' => '顯示已讀文章',
+		'state_14' => '顯示未讀文章',
+		'state_15' => '顯示所有文章',
+		'title' => '自定義查詢',
+	),
+	'reading' => array(
+		'_' => '閱讀',
+		'after_onread' => '「全部標記為已讀」後',
+		'always_show_favorites' => '預設顯示收藏夾中所有的文章',
+		'apply_to_individual_feed' => 'Applies to feeds individually',	// TODO
+		'article' => array(
+			'authors_date' => array(
+				'_' => '作者和日期',
+				'both' => '兩者都顯示',
+				'footer' => '僅頁腳顯示',
+				'header' => '僅頁眉顯示',
+				'none' => '不顯示',
+			),
+			'feed_name' => array(
+				'above_title' => '在文章標題和標籤上方',
+				'none' => '不顯示',
+				'with_authors' => '與作者和日期一行',
+			),
+			'feed_title' => '訂閱源標題',
+			'icons' => array(
+				'_' => '文章圖示的位置<br /><small>(限閱讀視圖)</small>',
+				'above_title' => '標題之上',
+				'with_authors' => '在作者和日期列中',
+			),
+			'tags' => array(
+				'_' => '文章標籤',
+				'both' => '兩者都顯示',
+				'footer' => '僅頁腳顯示',
+				'header' => '僅頁眉顯示',
+				'none' => '不顯示',
+			),
+			'tags_max' => array(
+				'_' => '標籤最多顯示個數',
+				'help' => '0 標識顯示所有標籤',
+			),
+		),
+		'articles_per_page' => '每頁文章數',
+		'auto_load_more' => '在頁面底部載入更多文章',
+		'auto_remove_article' => '閱讀後隱藏文章',
+		'confirm_enabled' => '「全部標記為已讀」時顯示確認對話框',
+		'display_articles_unfolded' => '預設展開顯示文章',
+		'display_categories_unfolded' => '要展開的分類',
+		'headline' => array(
+			'articles' => '文章：打開/關閉',
+			'articles_header_footer' => '文章: 頁眉/頁腳',
+			'categories' => '左側導航：分類',
+			'mark_as_read' => '標為已讀選項',
+			'misc' => '其它',
+			'view' => '瀏覽',
+		),
+		'hide_read_feeds' => '隱藏沒有未讀文章的分類和訂閱源 (啟用「顯示所有文章」後不生效)',
+		'img_with_lazyload' => '延遲加載圖片',
+		'jump_next' => '跳轉到下一未讀項',
+		'mark_updated_article_unread' => '將更新的文章設為未讀',
+		'number_divided_when_reader' => '閱讀視圖中顯示一半',
+		'read' => array(
+			'article_open_on_website' => '在打開原文章後',
+			'article_viewed' => '在文章被瀏覽後',
+			'focus' => '當注意力集中時（重要的源除外）',
+			'keep_max_n_unread' => '未讀最多保留 n 條',
+			'scroll' => '在滾動瀏覽後（重要的源除外）',	// DIRTY
+			'upon_gone' => '在被原訂閱源移除後',
+			'upon_reception' => '在接收文章後',
+			'when' => '何時將文章標記為已讀',
+			'when_same_title_in_category' => 'if an identical title already exists in the top <i>n</i> newest articles of the category',	// TODO
+			'when_same_title_in_feed' => '已存在 n 條相同標題文章 (of the feed)',	// DIRTY
+		),
+		'show' => array(
+			'_' => '文章顯示',
+			'active_category' => '啟用的分類',
+			'adaptive' => 'Show unreads if any, all articles otherwise',	// TODO
+			'all_articles' => '顯示所有',
+			'all_categories' => '所有分類',
+			'no_category' => '無分類',
+			'remember_categories' => '記住打開的分類',
+			'unread' => '只顯示未讀',
+			'unread_or_favorite' => 'Show unreads and favourites',	// TODO
+		),
+		'show_fav_unread_help' => '同樣適用於標籤',
+		'sides_close_article' => '點擊文章區域外以關閉',
+		'sort' => array(
+			'_' => '排列順序',
+			'newer_first' => '由新至舊',
+			'older_first' => '由舊至新',
+		),
+		'star' => array(
+			'when' => '標記一篇文章為最愛…',
+		),
+		'sticky_post' => '打開文章時將其置於頁首',
+		'title' => '閱讀',
+		'view' => array(
+			'default' => '預設視圖',
+			'global' => '全屏視圖',
+			'normal' => '普通視圖',
+			'reader' => '閱讀視圖',
+		),
+	),
+	'sharing' => array(
+		'_' => '分享',
+		'add' => '新增分享方式',
+		'bluesky' => 'Bluesky',	// TODO
+		'deprecated' => '這項功能已廢棄並在將來版本的 FreshRSS 中移除，詳情請見 <a href="https://freshrss.github.io/FreshRSS/en/users/08_sharing_services.html" title="Open documentation for more information" target="_blank">說明文檔</a>.',
+		'diaspora' => 'Diaspora*',	// IGNORE
+		'email' => '郵箱',	// IGNORE
+		'facebook' => '臉書',	// IGNORE
+		'more_information' => '更多資訊',
+		'print' => '列印',
+		'raindrop' => 'Raindrop.io',	// IGNORE
+		'remove' => '刪除分享方式',
+		'shaarli' => 'Shaarli',	// IGNORE
+		'share_name' => '名稱',
+		'share_url' => '地址',
+		'title' => '分享',
+		'twitter' => '推特',	// IGNORE
+		'wallabag' => 'Wallabag',	// IGNORE
+	),
+	'shortcut' => array(
+		'_' => '快捷鍵',
+		'article_action' => '文章操作',
+		'auto_share' => '分享',
+		'auto_share_help' => '如果有多種分享方式，則會按照它們的序號依次訪問。',
+		'close_menus' => '關閉菜單',
+		'collapse_article' => '收起文章',
+		'first_article' => '打開第一篇文章',
+		'focus_search' => '聚焦到搜尋框',
+		'global_view' => '切換到全屏視圖',
+		'help' => '顯示幫助文檔',
+		'javascript' => '若要使用快捷鍵，必須啟用 JavaScript',
+		'last_article' => '打開最後一篇文章',
+		'load_more' => '載入更多文章',
+		'mark_favorite' => '加入收藏',
+		'mark_read' => '設為已讀',
+		'navigation' => '瀏覽',
+		'navigation_help' => '組合 <kbd>⇧ Shift</kbd> 鍵，瀏覽快捷鍵將生效於訂閱源。<br/>組合 <kbd>Alt ⎇</kbd> 鍵，瀏覽快捷鍵將生效於分類。',
+		'navigation_no_mod_help' => '以下快捷鍵不支持組合鍵（Shift 或 Alt）',
+		'next_article' => '打開下一篇文章',
+		'next_unread_article' => '打開下一篇未讀文章',
+		'non_standard' => '這些鍵 (<kbd>%s</kbd>) 可能不能作為快捷鍵',
+		'normal_view' => '切換到普通視圖',
+		'other_action' => '其它操作',
+		'previous_article' => '打開上一篇文章',
+		'reading_view' => '切換到閱讀視圖',
+		'rss_view' => '切換到 RSS 視圖',
+		'see_on_website' => '在原網站中查看',
+		'shift_for_all_read' => '組合 <kbd>Alt ⎇</kbd>鍵 將上方的文章標記為已讀<br />組合 <kbd>⇧ Shift</kbd>按鍵 可以將全部文章設為已讀',
+		'skip_next_article' => '跳轉到下一篇文章而不打開',
+		'skip_previous_article' => '跳轉到上一篇文章而不打開',
+		'title' => '快捷鍵',
+		'toggle_media' => '播放/暫停媒體',
+		'user_filter' => '顯示自定義查詢',
+		'user_filter_help' => '如果有多個自定義過濾器，則會按照它們的序號依次訪問。',
+		'views' => '視圖',
+	),
+	'user' => array(
+		'articles_and_size' => '%s 篇文章 (%s)',
+		'current' => '當前使用者',
+		'is_admin' => '該使用者為管理員',
+		'users' => '使用者',
+	),
+);
diff --git a/app/i18n/zh-TW/feedback.php b/app/i18n/zh-TW/feedback.php
new file mode 100644
index 000000000..4bdf243a4
--- /dev/null
+++ b/app/i18n/zh-TW/feedback.php
@@ -0,0 +1,152 @@
+<?php
+
+/******************************************************************************
+ * Each entry of that file can be associated with a comment to indicate its   *
+ * state. When there is no comment, it means the entry is fully translated.   *
+ * The recognized comments are (comment matching is case-insensitive):        *
+ *   + TODO: the entry has never been translated.                             *
+ *   + DIRTY: the entry has been translated but needs to be updated.          *
+ *   + IGNORE: the entry does not need to be translated.                      *
+ * When a comment is not recognized, it is discarded.                         *
+ ******************************************************************************/
+
+return array(
+	'access' => array(
+		'denied' => '你無權訪問此頁面',
+		'not_found' => '你尋找的頁面不存在',
+	),
+	'admin' => array(
+		'optimization_complete' => '優化完成',
+	),
+	'api' => array(
+		'password' => array(
+			'failed' => '您的密碼無法修改',
+			'updated' => '您的密碼已修改',
+		),
+	),
+	'auth' => array(
+		'login' => array(
+			'invalid' => '使用者名或密碼無效',
+			'success' => '登入成功',
+		),
+		'logout' => array(
+			'success' => '已登出',
+		),
+	),
+	'conf' => array(
+		'error' => '保存配置時出錯',
+		'query_created' => '查詢 “%s” 已創建。',
+		'shortcuts_updated' => '快捷鍵已更新',
+		'updated' => '配置已更新',
+	),
+	'extensions' => array(
+		'already_enabled' => '%s 已啟用',
+		'cannot_remove' => '無法刪除 %s',
+		'disable' => array(
+			'ko' => '禁用 %s 失敗。<a href="%s">檢查 FreshRSS 日誌</a> 查看詳情。',
+			'ok' => '%s 現已禁用',
+		),
+		'enable' => array(
+			'ko' => '%s 啟用失敗。<a href="%s">檢查 FreshRSS 日誌</a> 查看詳情。',
+			'ok' => '%s 現已啟用',
+		),
+		'invalid_view_mode' => 'Invalid view mode “%s”! Fall back to “Normal view”.',	// TODO
+		'no_access' => '你無權訪問 %s',
+		'not_enabled' => '%s 未啟用',
+		'not_found' => '%s 不存在',
+		'removed' => '%s 已刪除',
+	),
+	'import_export' => array(
+		'export_no_zip_extension' => '伺服器未啟用 ZIP 擴展。請嘗試逐個導出文件。',
+		'feeds_imported' => '你的訂閱已導入，即將刷新 / Your feeds have been imported. If you are done importing, you can now click the <i>Update feeds</i> button.',
+		'feeds_imported_with_errors' => '你的訂閱源已導入，但發生錯誤 / Your feeds have been imported, but some errors occurred. If you are done importing, you can now click the <i>Update feeds</i> button.',
+		'file_cannot_be_uploaded' => '文件未能上傳！',
+		'no_zip_extension' => '伺服器未啟用 ZIP 擴展。',
+		'zip_error' => '導入 ZIP 文件時出錯',	// DIRTY
+	),
+	'profile' => array(
+		'error' => '你的帳戶修改失敗',
+		'passwords_dont_match' => 'Passwords don’t match',	// TODO
+		'updated' => '你的帳戶已修改',
+	),
+	'sub' => array(
+		'actualize' => '獲取',
+		'articles' => array(
+			'marked_read' => '文章已標記為已讀',
+			'marked_unread' => '文章已標記為未讀',
+		),
+		'category' => array(
+			'created' => '已創建分類 %s',
+			'deleted' => '已刪除分類',
+			'emptied' => '已清空分類',
+			'error' => '更新分類失敗',
+			'name_exists' => '分類名已存在',
+			'no_id' => '你必須明確分類編號',
+			'no_name' => '分類名不能為空',
+			'not_delete_default' => '你不能刪除默認分類！',
+			'not_exist' => '分類不存在！',
+			'over_max' => '你已達到分類數上限（%d）',
+			'updated' => '已更新分類',
+		),
+		'feed' => array(
+			'actualized' => '已更新 <em>%s</em>',
+			'actualizeds' => '已更新訂閱源',
+			'added' => '訂閱源 <em>%s</em> 已添加',
+			'already_subscribed' => '你已訂閱 <em>%s</em>',
+			'cache_cleared' => '<em>%s</em> 緩存已清理',
+			'deleted' => '已刪除訂閱源',
+			'error' => '訂閱源更新失敗',
+			'favicon' => array(
+				'too_large' => 'Uploaded icon is too large. The maximum file size is <em>%s</em>.',	// TODO
+				'unsupported_format' => 'Unsupported image file format!',	// TODO
+			),
+			'internal_problem' => '訂閱源添加失敗。<a href="%s">檢查 FreshRSS 日誌</a> 查看詳情。你可以在地址連結後附加 <code>#force_feed</code> 從而嘗試強制添加。',
+			'invalid_url' => '地址鏈接 <em>%s</em> 無效',
+			'n_actualized' => '已更新 %d 個訂閱源',
+			'n_entries_deleted' => '已刪除 %d 篇文章',
+			'no_refresh' => '沒有可刷新的訂閱源…',
+			'not_added' => '<em>%s</em> 添加失敗',
+			'not_found' => '無法找到訂閱',
+			'over_max' => '你已達到訂閱源數上限（%d）',
+			'reloaded' => '<em>%s</em> 已重置',
+			'selector_preview' => array(
+				'http_error' => '無法加載網站內容。',
+				'no_entries' => '您的訂閱中沒有任何條目。您至少需要一個條目來創建一個預覽。',
+				'no_feed' => '網絡錯誤（訂閱源不存在）',
+				'no_result' => '選擇器沒有匹配到任何東西。作為備用，原始的feed文本將被顯示出來。',
+				'selector_empty' => '選擇器是空的。你需要一個來創建預覽。',
+			),
+			'updated' => '已更新訂閱源',
+		),
+		'purge_completed' => '清除完成（已刪除 %d 篇文章）',
+	),
+	'tag' => array(
+		'created' => '標籤 “%s” 已創建。',
+		'error' => '無法更新標籤!',
+		'name_exists' => '標籤名已存在。',
+		'renamed' => '標籤 “%s” 已被重命名為 “%s”。',
+		'updated' => '已更新標籤。',
+	),
+	'update' => array(
+		'can_apply' => 'FreshRSS 將更新到 <strong>版本 %s</strong>。',
+		'error' => '更新出錯：%s',
+		'file_is_nok' => '請檢查 <em>%s</em> 目錄權限。HTTP 伺服器必須有其寫入權限。',
+		'finished' => '更新完成！',
+		'none' => '沒有可用更新',
+		'server_not_found' => '找不到更新伺服器 [%s]',
+	),
+	'user' => array(
+		'created' => array(
+			'_' => '已創建使用者 %s',
+			'error' => '創建使用者 %s 失敗',
+		),
+		'deleted' => array(
+			'_' => '已刪除使用者 %s',
+			'error' => '刪除使用者 %s 失敗',
+		),
+		'updated' => array(
+			'_' => '已更新使用者 %s',
+			'error' => '更新使用者 %s 失敗',
+		),
+	),
+);
diff --git a/app/i18n/zh-TW/gen.php b/app/i18n/zh-TW/gen.php
new file mode 100644
index 000000000..d7216765a
--- /dev/null
+++ b/app/i18n/zh-TW/gen.php
@@ -0,0 +1,277 @@
+<?php
+
+/******************************************************************************
+ * Each entry of that file can be associated with a comment to indicate its   *
+ * state. When there is no comment, it means the entry is fully translated.   *
+ * The recognized comments are (comment matching is case-insensitive):        *
+ *   + TODO: the entry has never been translated.                             *
+ *   + DIRTY: the entry has been translated but needs to be updated.          *
+ *   + IGNORE: the entry does not need to be translated.                      *
+ * When a comment is not recognized, it is discarded.                         *
+ ******************************************************************************/
+
+return array(
+	'action' => array(
+		'actualize' => '更新提要',
+		'add' => '新增',
+		'back_to_rss_feeds' => '← 返回訂閱源',
+		'cancel' => '取消',
+		'close' => 'Close',	// TODO
+		'create' => '創建',
+		'delete_all_feeds' => 'Delete all feeds',	// TODO
+		'delete_errored_feeds' => 'Delete feeds with errors',	// TODO
+		'delete_muted_feeds' => '刪除已暫停的訂閱源',
+		'demote' => '撤銷管理員',
+		'disable' => '禁用',
+		'download' => 'Download',	// TODO
+		'empty' => '清空',
+		'enable' => '啟用',
+		'export' => '導出',
+		'filter' => '過濾',
+		'import' => '導入',
+		'load_default_shortcuts' => '重置快捷鍵',
+		'manage' => '管理',
+		'mark_read' => '標記已讀',
+		'menu' => array(
+			'open' => '開啟選單',
+		),
+		'nav_buttons' => array(
+			'next' => '下一篇文章',
+			'prev' => '預覽文章',
+			'up' => '回上一篇',
+		),
+		'open_url' => '打開連結',
+		'promote' => '設為管理員',
+		'purge' => '清理',
+		'refresh_opml' => '更新訂閱源動態列表',
+		'remove' => '刪除',
+		'rename' => '重命名',
+		'see_website' => '網站中查看',
+		'submit' => '提交',
+		'truncate' => '刪除所有文章',
+		'update' => '更新訂閱',
+	),
+	'auth' => array(
+		'accept_tos' => '我接受 <a href="%s">服務條款</a>',
+		'email' => 'Email 地址',
+		'keep_logged_in' => '<small>%s</small> 天內保持登入',
+		'login' => '登入',
+		'logout' => '登出',
+		'password' => array(
+			'_' => '密碼',
+			'format' => '<small>至少 7 個字元</small>',
+		),
+		'reauth' => array(
+			'header' => 'Reauthentication is required',	// TODO
+			'tip' => 'You won’t be asked to sign in again for <u>%d minutes</u>',	// TODO
+			'title' => 'Reauthentication',	// TODO
+		),
+		'registration' => array(
+			'_' => '新使用者',
+			'ask' => '創建新使用者？',
+			'title' => '使用者創建',
+		),
+		'username' => array(
+			'_' => '帳號',
+			'format' => '<small>最多 16 個數字或字母</small>',
+		),
+	),
+	'date' => array(
+		'Apr' => '\\四\\月',
+		'Aug' => '\\八\\月',
+		'Dec' => '\\十\\二\\月',
+		'Feb' => '\\二\\月',
+		'Jan' => '\\一\\月',
+		'Jul' => '\\七\\月',
+		'Jun' => '\\六\\月',
+		'Mar' => '\\三\\月',
+		'May' => '\\五\\月',
+		'Nov' => '\\十\\一\\月',
+		'Oct' => '\\十\\月',
+		'Sep' => '\\九\\月',
+		'apr' => '四月',
+		'april' => '四月',
+		'aug' => '八月',
+		'august' => '八月',
+		'before_yesterday' => '昨天以前',
+		'dec' => '十二月',
+		'december' => '十二月',
+		'feb' => '二月',
+		'february' => '二月',
+		'format_date' => 'Y\\年n\\月j\\日',
+		'format_date_hour' => 'Y\\年n\\月j\\日	H\\:i',
+		'fri' => '週五',
+		'jan' => '一月',
+		'january' => '一月',
+		'jul' => '七月',
+		'july' => '七月',
+		'jun' => '六月',
+		'june' => '六月',
+		'last_2_year' => '過去兩年',
+		'last_3_month' => '最近三個月',
+		'last_3_year' => '過去三年',
+		'last_5_year' => '過去五年',
+		'last_6_month' => '最近六個月',
+		'last_month' => '上月',
+		'last_week' => '上週',
+		'last_year' => '去年',
+		'mar' => '三月',
+		'march' => '三月',
+		'may' => '五月',
+		'may_' => '五月',
+		'mon' => '週一',
+		'month' => '個月',
+		'nov' => '十一月',
+		'november' => '十一月',
+		'oct' => '十月',
+		'october' => '十月',
+		'sat' => '週六',
+		'sep' => '九月',
+		'september' => '九月',
+		'sun' => '週日',
+		'thu' => '週四',
+		'today' => '今天',
+		'tue' => '週二',
+		'wed' => '週三',
+		'yesterday' => '昨天',
+	),
+	'dir' => 'ltr',	// IGNORE
+	'freshrss' => array(
+		'_' => 'FreshRSS',	// IGNORE
+		'about' => '關於 FreshRSS',
+	),
+	'js' => array(
+		'category_empty' => '清空分類',
+		'confirm_action' => '你確定要執行此操作嗎？這將不可撤銷！',
+		'confirm_action_feed_cat' => '你確定要執行此操作嗎？你將丟失相關的收藏和自定義查詢。這將不可撤銷！',
+		'confirm_exit_slider' => 'Are you sure you want to discard unsaved settings?',	// TODO
+		'feedback' => array(
+			'body_new_articles' => 'FreshRSS 中有 %%d 篇文章等待閱讀。',
+			'body_unread_articles' => '(未讀: %%d)',
+			'request_failed' => '請求失敗，這可能是因為網絡連接問題。',
+			'title_new_articles' => 'FreshRSS: 新文章！',
+		),
+		'labels_empty' => '沒有標籤',
+		'new_article' => '發現新文章，點擊刷新頁面。',
+		'should_be_activated' => '必須啟用 JavaScript',
+		'unsafe_csp_header' => 'The CSP header in use is unsafe and FreshRSS may be vulnerable to XSS attacks. <a target="_blank" href="https://freshrss.github.io/FreshRSS/en/admins/10_ServerConfig.html#security">See documentation</a>',	// TODO
+	),
+	'lang' => array(
+		'cs' => 'Čeština',	// IGNORE
+		'de' => 'Deutsch',	// IGNORE
+		'el' => 'Ελληνικά',	// IGNORE
+		'en' => 'English',	// IGNORE
+		'en-US' => 'English (United States)',	// IGNORE
+		'es' => 'Español',	// IGNORE
+		'fa' => 'فارسی',	// IGNORE
+		'fi' => 'Suomi',	// IGNORE
+		'fr' => 'Français',	// IGNORE
+		'he' => 'עברית',	// IGNORE
+		'hu' => 'Magyar',	// IGNORE
+		'id' => 'Bahasa Indonesia',	// IGNORE
+		'it' => 'Italiano',	// IGNORE
+		'ja' => '日本語',	// IGNORE
+		'ko' => '한국어',	// IGNORE
+		'lv' => 'Latviešu',	// IGNORE
+		'nl' => 'Nederlands',	// IGNORE
+		'oc' => 'Occitan',	// IGNORE
+		'pl' => 'Polski',	// IGNORE
+		'pt-BR' => 'Português (Brasil)',	// IGNORE
+		'pt-PT' => 'Português (Portugal)',	// IGNORE
+		'ru' => 'Русский',	// IGNORE
+		'sk' => 'Slovenčina',	// IGNORE
+		'tr' => 'Türkçe',	// IGNORE
+		'uk' => 'Українська',	// IGNORE
+		'zh-CN' => '简体中文',	// IGNORE
+		'zh-TW' => '正體中文',	// IGNORE
+	),
+	'menu' => array(
+		'about' => '關於',
+		'account' => '帳號',
+		'admin' => '管理',
+		'archiving' => '歸檔',
+		'authentication' => '認證',
+		'check_install' => '環境檢查',
+		'configuration' => '配置',
+		'display' => '顯示',
+		'extensions' => '擴充功能',
+		'logs' => '日誌',
+		'privacy' => 'Privacy',	// TODO
+		'queries' => '自定義查詢',
+		'reading' => '閱讀',
+		'search' => '搜尋內容或#標簽',
+		'search_help' => '請見文檔內的進階的<a href="https://freshrss.github.io/FreshRSS/en/users/10_filter.html#with-the-search-field" target="_blank">搜尋參數</a>',
+		'sharing' => '分享',
+		'shortcuts' => '快捷鍵',
+		'stats' => '統計',
+		'system' => '系統配置',
+		'update' => '更新',
+		'user_management' => '使用者管理',
+		'user_profile' => '使用者資訊',
+	),
+	'period' => array(
+		'days' => '天',
+		'hours' => '時',
+		'months' => '月',
+		'weeks' => '週',
+		'years' => '年',
+	),
+	'readme' => array(
+		'contribute' => 'contribute',	// IGNORE
+		'language' => 'Language',	// IGNORE
+		'translated' => 'Progress',	// IGNORE
+	),
+	'share' => array(
+		'Known' => '基於 Known 的站點',
+		'archiveIS' => 'archive.is',	// IGNORE
+		'archiveORG' => 'archive.org',	// IGNORE
+		'archivePH' => 'archive.ph',	// IGNORE
+		'bluesky' => 'Bluesky',	// IGNORE
+		'buffer' => 'Buffer',	// IGNORE
+		'clipboard' => '剪貼板',
+		'diaspora' => 'Diaspora*',	// IGNORE
+		'email' => '郵箱',	// IGNORE
+		'email-webmail-firefox-fix' => 'Email (webmail - Firefox專用修正)',
+		'facebook' => '臉書',	// IGNORE
+		'gnusocial' => 'GNU social',	// IGNORE
+		'jdh' => 'Journal du hacker',	// IGNORE
+		'lemmy' => 'Lemmy',	// IGNORE
+		'linkding' => 'Linkding',	// IGNORE
+		'linkedin' => 'LinkedIn',	// IGNORE
+		'mastodon' => 'Mastodon',	// IGNORE
+		'movim' => 'Movim',	// IGNORE
+		'omnivore' => 'Omnivore',	// IGNORE
+		'pinboard' => 'Pinboard',	// IGNORE
+		'pinterest' => 'Pinterest',	// IGNORE
+		'pocket' => 'Pocket',	// IGNORE
+		'print' => '打印',
+		'raindrop' => 'Raindrop.io',	// IGNORE
+		'reddit' => 'Reddit',	// IGNORE
+		'shaarli' => 'Shaarli',	// IGNORE
+		'telegram' => 'Telegram',	// IGNORE
+		'twitter' => '推特',	// IGNORE
+		'wallabag' => 'Wallabag v1',	// IGNORE
+		'wallabagv2' => 'Wallabag v2',	// IGNORE
+		'web-sharing-api' => 'Web分享',
+		'whatsapp' => 'Whatsapp',	// IGNORE
+		'xing' => 'Xing',	// IGNORE
+	),
+	'short' => array(
+		'attention' => '警告!',
+		'blank_to_disable' => '留空以禁用',
+		'by_author' => '作者',
+		'by_default' => '預設',
+		'damn' => '錯誤！',
+		'default_category' => '未分類',
+		'no' => '否',
+		'not_applicable' => '不可用',
+		'ok' => '正常！',
+		'or' => '或',
+		'yes' => '是',
+	),
+	'stream' => array(
+		'load_more' => '載入更多文章',
+		'mark_all_read' => '全部設為已讀',
+		'nothing_to_load' => '沒有更多文章',
+	),
+);
diff --git a/app/i18n/zh-TW/index.php b/app/i18n/zh-TW/index.php
new file mode 100644
index 000000000..4fcae7478
--- /dev/null
+++ b/app/i18n/zh-TW/index.php
@@ -0,0 +1,110 @@
+<?php
+
+/******************************************************************************
+ * Each entry of that file can be associated with a comment to indicate its   *
+ * state. When there is no comment, it means the entry is fully translated.   *
+ * The recognized comments are (comment matching is case-insensitive):        *
+ *   + TODO: the entry has never been translated.                             *
+ *   + DIRTY: the entry has been translated but needs to be updated.          *
+ *   + IGNORE: the entry does not need to be translated.                      *
+ * When a comment is not recognized, it is discarded.                         *
+ ******************************************************************************/
+
+return array(
+	'about' => array(
+		'_' => '關於',
+		'agpl3' => '<a href="https://www.gnu.org/licenses/agpl-3.0.html">AGPL 3</a>',	// IGNORE
+		'bug_reports' => array(
+			'environment_information' => array(
+				'_' => 'System information',	// TODO
+				'browser' => 'Browser',	// TODO
+				'database' => 'Database',	// TODO
+				'server_software' => 'Server software',	// TODO
+				'version_curl' => 'cURL version',	// TODO
+				'version_frss' => 'FreshRSS version',	// TODO
+				'version_php' => 'PHP version',	// TODO
+			),
+		),
+		'bugs_reports' => '報告錯誤',
+		'documentation' => 'Documentation',	// TODO
+		'freshrss_description' => 'FreshRSS 是一個自托管的 RSS 聚合服務。 它不僅輕快又易用，而且強大又易於配置。',
+		'github' => '<a href="https://github.com/FreshRSS/FreshRSS/issues">GitHub Issues</a>',
+		'license' => '授權',
+		'project_website' => '項目網站',
+		'title' => '關於',
+		'version' => '版本',
+	),
+	'feed' => array(
+		'empty' => '暫時沒有文章可顯示。',
+		'received' => array(
+			'before_yesterday' => 'Received before yesterday',	// TODO
+			'today' => 'Received today',	// TODO
+			'yesterday' => 'Received yesterday',	// TODO
+		),
+		'rss_of' => '%s 的訂閱源',
+		'title' => '首頁',
+		'title_fav' => '收藏',
+		'title_global' => '全局視圖',
+	),
+	'log' => array(
+		'_' => '日誌',
+		'clear' => '清除日誌',
+		'empty' => '日誌文件為空',
+		'title' => '日誌',
+	),
+	'menu' => array(
+		'about' => '關於 FreshRSS',
+		'before_one_day' => '一天前',
+		'before_one_week' => '一週前',
+		'bookmark_query' => '收藏當前查詢',
+		'favorites' => '收藏（%s）',
+		'global_view' => '全局視圖',
+		'important' => '重要的源',
+		'main_stream' => '首頁',
+		'mark_all_read' => '全部設為已讀',
+		'mark_cat_read' => '此分類設為已讀',
+		'mark_feed_read' => '此訂閱源設為已讀',
+		'mark_selection_unread' => '選中設為已讀',
+		'mylabels' => '我的標籤',
+		'newer_first' => '由新至舊',
+		'non-starred' => '顯示未收藏',
+		'normal_view' => '普通視圖',
+		'older_first' => '由舊至新',
+		'queries' => '自定義查詢',
+		'read' => '顯示已讀',
+		'reader_view' => '閱讀視圖',
+		'rss_view' => '訂閱源',
+		'search_short' => '搜尋',
+		'sort' => array(
+			'_' => 'Sorting criteria',	// TODO
+			'c' => array(
+				'name_asc' => 'Category, feed titles A→Z',	// TODO
+				'name_desc' => 'Category, feed titles Z→A',	// TODO
+			),
+			'date_asc' => 'Publication date 1→9',	// TODO
+			'date_desc' => 'Publication date 9→1',	// TODO
+			'f' => array(
+				'name_asc' => 'Feed title A→Z',	// TODO
+				'name_desc' => 'Feed title Z→A',	// TODO
+			),
+			'id_asc' => 'Freshly received last',	// TODO
+			'id_desc' => 'Freshly received first',	// TODO
+			'link_asc' => 'Link A→Z',	// TODO
+			'link_desc' => 'Link Z→A',	// TODO
+			'rand' => 'Random order',	// TODO
+			'title_asc' => 'Title A→Z',	// TODO
+			'title_desc' => 'Title Z→A',	// TODO
+		),
+		'starred' => '顯示收藏',
+		'stats' => '統計',
+		'subscription' => '訂閱管理',
+		'unread' => '顯示未讀',
+	),
+	'share' => '分享',
+	'tag' => array(
+		'related' => '文章標籤',
+	),
+	'tos' => array(
+		'title' => '服務條款',
+	),
+);
diff --git a/app/i18n/zh-TW/install.php b/app/i18n/zh-TW/install.php
new file mode 100644
index 000000000..85efc75b2
--- /dev/null
+++ b/app/i18n/zh-TW/install.php
@@ -0,0 +1,128 @@
+<?php
+
+/******************************************************************************
+ * Each entry of that file can be associated with a comment to indicate its   *
+ * state. When there is no comment, it means the entry is fully translated.   *
+ * The recognized comments are (comment matching is case-insensitive):        *
+ *   + TODO: the entry has never been translated.                             *
+ *   + DIRTY: the entry has been translated but needs to be updated.          *
+ *   + IGNORE: the entry does not need to be translated.                      *
+ * When a comment is not recognized, it is discarded.                         *
+ ******************************************************************************/
+
+return array(
+	'action' => array(
+		'finish' => '完成安裝',
+		'fix_errors_before' => '請在繼續下一步前修復錯誤',
+		'keep_install' => '保留當前配置',
+		'next_step' => '下一步',
+		'reinstall' => '重新安裝 FreshRSS',
+	),
+	'bdd' => array(
+		'_' => '資料庫',
+		'conf' => array(
+			'_' => '資料庫配置',
+			'ko' => '請驗證你的資料庫資訊',
+			'ok' => '數據庫配置已保存',
+		),
+		'host' => '主機',
+		'password' => '密碼',
+		'prefix' => '表前綴',
+		'type' => '資料庫類型',
+		'username' => '使用者名',
+	),
+	'check' => array(
+		'_' => '檢查',
+		'already_installed' => '我們檢測到 FreshRSS 已經安裝！',
+		'cache' => array(
+			'nok' => '請檢查 <em>%s</em> 目錄權限。HTTP 伺服器必須有其寫入權限。',
+			'ok' => 'cache 目錄權限正常',
+		),
+		'ctype' => array(
+			'nok' => '找不到字符類型檢測庫（php-ctype）',
+			'ok' => '已找到字符類型檢測庫',
+		),
+		'curl' => array(
+			'nok' => '找不到 cURL 庫（php-curl）',
+			'ok' => '已找到 cURL 庫',
+		),
+		'data' => array(
+			'nok' => '請檢查 <em>%s</em> 目錄權限。HTTP 伺服器必須有其寫入權限。',
+			'ok' => 'data 目錄權限正常',
+		),
+		'dom' => array(
+			'nok' => '找不到用於瀏覽 DOM 的庫（php-xml）',
+			'ok' => '已找到用於瀏覽 DOM 的庫',
+		),
+		'favicons' => array(
+			'nok' => '請檢查 <em>%s</em> 目錄權限。HTTP 伺服器必須有其寫入權限。',
+			'ok' => 'favicons 目錄權限正常',
+		),
+		'fileinfo' => array(
+			'nok' => '找不到 PHP fileinfo 庫（php-fileinfo）',
+			'ok' => '已找到 fileinfo 庫',
+		),
+		'json' => array(
+			'nok' => '找不到推薦的 JSON 解析庫',
+			'ok' => '已找到推薦的 JSON 解析庫',
+		),
+		'mbstring' => array(
+			'nok' => '找不到推薦的 Unicode 解析庫（mbstring)',
+			'ok' => '已找到推薦的 Unicode 解析庫',
+		),
+		'pcre' => array(
+			'nok' => '找不到正則表達式解析庫（php-pcre）',
+			'ok' => '已找到正則表達式解析庫',
+		),
+		'pdo' => array(
+			'nok' => '找不到 PDO 或支持的驅動（pdo_mysql、pdo_sqlite、pdo_pgsql）',
+			'ok' => '已找到 PDO 和支持的至少一種驅動（pdo_mysql、pdo_sqlite、pdo_pgsql）',
+		),
+		'php' => array(
+			'nok' => '你的 PHP 版本為 %s，但 FreshRSS 最低需要 %s',
+			'ok' => '你的 PHP 版本為 %s，與 FreshRSS 兼容',
+		),
+		'reload' => '再檢查一遍',
+		'tmp' => array(
+			'nok' => '請檢查 <em>%s</em> 目錄權限。HTTP 伺服器必須有其寫入權限。',
+			'ok' => '緩存目錄權限正常。',
+		),
+		'unknown_process_username' => '未知',
+		'users' => array(
+			'nok' => '請檢查 <em>%s</em> 目錄權限。HTTP 伺服器必須有其寫入權限。',
+			'ok' => 'users 目錄權限正常',
+		),
+		'xml' => array(
+			'nok' => '找不到用於 XML 解析庫',
+			'ok' => '已找到 XML 解析庫',
+		),
+	),
+	'conf' => array(
+		'_' => '常規配置',
+		'ok' => '常規配置已保存',
+	),
+	'congratulations' => '恭喜！',
+	'default_user' => array(
+		'_' => '預設使用者名',
+		'max_char' => '最多 16 個數字或字母',
+	),
+	'fix_errors_before' => '請在繼續下一步前修復錯誤',
+	'javascript_is_better' => '啟用 JavaScript 會使 FreshRSS 工作得更好',
+	'js' => array(
+		'confirm_reinstall' => '重新安裝 FreshRSS 將會重置之前的配置。你確定要繼續嗎？',
+	),
+	'language' => array(
+		'_' => '語言',
+		'choose' => '為 FreshRSS 選擇語言',
+		'defined' => '語言已指定',
+	),
+	'missing_applied_migrations' => '出現錯誤，你需要手動創建一個空白檔案 <em>%s</em>。',
+	'ok' => '安裝成功',
+	'session' => array(
+		'nok' => 'Web 伺服器似乎未正確配置 PHP 會話所需的 cookie！',
+	),
+	'step' => '步驟 %d',
+	'steps' => '步驟',
+	'this_is_the_end' => '最後一步',
+	'title' => '安裝 FreshRSS',
+);
diff --git a/app/i18n/zh-TW/sub.php b/app/i18n/zh-TW/sub.php
new file mode 100644
index 000000000..836de4795
--- /dev/null
+++ b/app/i18n/zh-TW/sub.php
@@ -0,0 +1,307 @@
+<?php
+
+/******************************************************************************
+ * Each entry of that file can be associated with a comment to indicate its   *
+ * state. When there is no comment, it means the entry is fully translated.   *
+ * The recognized comments are (comment matching is case-insensitive):        *
+ *   + TODO: the entry has never been translated.                             *
+ *   + DIRTY: the entry has been translated but needs to be updated.          *
+ *   + IGNORE: the entry does not need to be translated.                      *
+ * When a comment is not recognized, it is discarded.                         *
+ ******************************************************************************/
+
+return array(
+	'api' => array(
+		'documentation' => '複製以下地址，以供外部工具使用',
+		'title' => 'API',	// IGNORE
+	),
+	'bookmarklet' => array(
+		'documentation' => '拖動此書簽到你的書簽欄或者右鍵選擇「收藏此連結」，然後在你想要訂閱的頁面上點擊「訂閱」按鈕',
+		'label' => '訂閱',
+		'title' => '書簽應用',
+	),
+	'category' => array(
+		'_' => '分類',
+		'add' => '添加分類',
+		'archiving' => '歸檔',
+		'dynamic_opml' => array(
+			'_' => '動態訂閱',
+			'help' => '使用地址上的 <a href="http://opml.org/" target="_blank">OPML 文件</a> 中的訂閱源填充這一分類',
+		),
+		'empty' => '空分類',
+		'expand' => '展開分類',
+		'information' => '資訊',
+		'open' => '打開分類',
+		'opml_url' => 'OPML 地址',
+		'position' => '顯示位置',
+		'position_help' => '控制分類排列順序',
+		'title' => '標題',
+	),
+	'feed' => array(
+		'accept_cookies' => '接受 Cookies',
+		'accept_cookies_help' => '允許提要伺服器設置 Cookies（僅在請求期間存儲在內存中）',
+		'add' => '添加訂閱源',
+		'advanced' => '高級',
+		'archiving' => '歸檔',
+		'auth' => array(
+			'configuration' => '認證',
+			'help' => '用於連接啟用 HTTP 認證的訂閱源',
+			'http' => 'HTTP 認證',
+			'password' => 'HTTP 密碼',
+			'username' => 'HTTP 用戶名',
+		),
+		'change_favicon' => 'Change…',	// TODO
+		'clear_cache' => '總是清除暫存',
+		'content_action' => array(
+			'_' => '獲取原文後的操作',
+			'append' => '添加在現有內容後部',
+			'prepend' => '添加在現有內容前部',
+			'replace' => '替換現有內容',
+		),
+		'content_retrieval' => 'Content retrieval',	// TODO
+		'css_cookie' => '獲取原文時的 Cookies',
+		'css_cookie_help' => '例：<kbd>foo=bar; gdpr_consent=true; cookie=value</kbd>',
+		'css_help' => '用於獲取全文（注意，這將耗費更多時間！）',
+		'css_path' => '原文的 CSS 選擇器',
+		'css_path_filter' => array(
+			'_' => '需移除元素的 CSS 選擇器',
+			'help' => '可設置多個 CSS 選擇器，例如：<kbd>footer, aside, p[data-sanitized-class~="menu"]</kbd>',
+		),
+		'description' => '描述',
+		'empty' => '此源為空。請確認它是否正常更新。',
+		'error' => '此源遇到一些問題。請在確認是否能正常訪問後重試。',	// DIRTY
+		'export-as-opml' => array(
+			'download' => '下載',
+			'help' => 'XML file (data subset. <a href="https://freshrss.github.io/FreshRSS/en/developers/OPML.html" target="_blank">See documentation</a>)',	// TODO
+			'label' => '匯出為OPML',
+		),
+		'ext_favicon' => 'Set automatically',	// TODO
+		'favicon_changed_by_ext' => 'The icon has been set by the <b>%s</b> extension.',	// TODO
+		'filteractions' => array(
+			'_' => '過濾動作',
+			'help' => '每行寫一條過濾搜尋 Operators <a href="https://freshrss.github.io/FreshRSS/en/users/10_filter.html#with-the-search-field" target="_blank">see documentation</a>.',	// DIRTY
+		),
+		'http_headers' => 'HTTP Headers',	// TODO
+		'http_headers_help' => 'Headers are separated by a newline, and the name and value of a header are separated by a colon (e.g: <kbd><code>Accept: application/atom+xml<br />Authorization: Bearer some-token</code></kbd>).',	// TODO
+		'icon' => 'Icon',	// TODO
+		'information' => '信息',
+		'keep_min' => '至少保存的文章數',
+		'kind' => array(
+			'_' => '訂閱源類型',
+			'html_json' => array(
+				'_' => 'HTML + XPath + JSON dot notation (JSON in HTML)',	// TODO
+				'xpath' => array(
+					'_' => 'XPath for JSON in HTML',	// TODO
+					'help' => 'Example: <code>normalize-space(//script[@type="application/json"])</code> (single JSON)<br />or: <code>//script[@type="application/ld+json"]</code> (one JSON object per article)',	// TODO
+				),
+			),
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web 抓取)',
+				'feed_title' => array(
+					'_' => '提要標題',
+					'help' => '如 <code>//title</code> 或是靜態字元串如 <code>"My custom feed"</code>',
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> 是為資深用戶準備的標準查詢語言，FreshRSS 用以實現 Web 抓取.',
+				'item' => array(
+					'_' => '以尋找 <strong>文章</strong><br /><small>(很重要)</small>',
+					'help' => '例如 <code>//div[@class="news-item"]</code>',
+				),
+				'item_author' => array(
+					'_' => '文章作者',
+					'help' => '可以是靜態字元串，例如 <code>"Anonymous"</code>',
+				),
+				'item_categories' => '文章標籤',
+				'item_content' => array(
+					'_' => '文章內容',
+					'help' => '例如使用 <code>.</code> 將整個對象作為文章內容',
+				),
+				'item_thumbnail' => array(
+					'_' => '文章縮圖',
+					'help' => '例如 <code>descendant::img/@src</code>',
+				),
+				'item_timeFormat' => array(
+					'_' => '自訂日期/時間格式',
+					'help' => '可選的。支援的格式<a href="https://php.net/datetime.createfromformat" target="_blank"><code>DateTime::createFromFormat()</code></a> 例如 <code>d-m-Y H:i:s</code>',
+				),
+				'item_timestamp' => array(
+					'_' => '文章日期：',
+					'help' => '結果將被 <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a> 解析',
+				),
+				'item_title' => array(
+					'_' => '文章標題',
+					'help' => '注意使用 <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath 軸</a> <code>descendant::</code>，例如 <code>descendant::h2</code>',
+				),
+				'item_uid' => array(
+					'_' => '文章唯一標識',
+					'help' => '可選，例如: <code>descendant::div/@data-uri</code>',
+				),
+				'item_uri' => array(
+					'_' => '文章鏈接 (URL)',
+					'help' => '例如 <code>descendant::a/@href</code>',
+				),
+				'relative' => 'XPath（文章）：',
+				'xpath' => 'XPath 定位：',
+			),
+			'json_dotnotation' => array(
+				'_' => 'JSON (點「.」符號)',
+				'feed_title' => array(
+					'_' => '源標題',
+					'help' => '範例: <code>meta.title</code> 或固定的字串: <code>"My custom feed"</code>',
+				),
+				'help' => 'A JSON dot notated uses dots between objects and brackets for arrays (e.g. <code>data.items[0].title</code>)',	// TODO
+				'item' => array(
+					'_' => '找尋新聞 <strong>項目</strong><br /><small>(最重要的)</small>',
+					'help' => 'JSON path to the array containing the items, e.g. <code>$</code> or <code>newsItems</code>',	// TODO
+				),
+				'item_author' => '項目作者',
+				'item_categories' => '項目標籤',
+				'item_content' => array(
+					'_' => '項目內容',
+					'help' => '可以在其下方找到內容的關鍵字, e.g. <code>content</code>',
+				),
+				'item_thumbnail' => array(
+					'_' => '項目縮圖',
+					'help' => '範例: <code>image</code>',
+				),
+				'item_timeFormat' => array(
+					'_' => '自訂 日期/時間 格式',
+					'help' => '選用項目。 支援以<a href="https://php.net/datetime.createfromformat" target="_blank"><code>DateTime::createFromFormat()</code></a> 表達的格式，例如 <code>d-m-Y H:i:s</code>',
+				),
+				'item_timestamp' => array(
+					'_' => '項目日期',
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => '項目標題',
+				'item_uid' => '項目專用ID',
+				'item_uri' => array(
+					'_' => '項目連結(URL)',
+					'help' => '範例: <code>永久連結</code>',
+				),
+				'json' => 'dot notation for:',	// TODO
+				'relative' => 'dot notated path (relative to item) for:',	// TODO
+			),
+			'jsonfeed' => 'JSON Feed',	// TODO
+			'rss' => 'RSS / Atom (預設)',
+			'xml_xpath' => 'XML + XPath',	// TODO
+		),
+		'maintenance' => array(
+			'clear_cache' => '清理暫存',
+			'clear_cache_help' => '清除該feed的暫存',
+			'reload_articles' => '重載文章',
+			'reload_articles_help' => '重載 n 篇文章並抓取內容（若設置了 CSS 選擇器）',
+			'title' => '維護',
+		),
+		'max_http_redir' => '最大 HTTP 重定向',
+		'max_http_redir_help' => '設置為 0 或留空以禁用，-1 表示無限重定向',
+		'method' => array(
+			'_' => 'HTTP 方法',
+		),
+		'method_help' => 'The POST payload has automatic support for <code>application/x-www-form-urlencoded</code> and <code>application/json</code>',	// TODO
+		'method_postparams' => 'Payload for POST',	// TODO
+		'moved_category_deleted' => '刪除分類時，其中的訂閱源會自動歸類到 <em>%s</em>',
+		'mute' => array(
+			'_' => '暫停',
+			'state_is_muted' => 'This feed is muted',	// TODO
+		),
+		'no_selected' => '未選擇訂閱源',
+		'number_entries' => '%d 篇文章',
+		'open_feed' => 'Open feed %s',	// TODO
+		'path_entries_conditions' => 'Conditions for content retrieval',	// TODO
+		'priority' => array(
+			'_' => '可見性',
+			'category' => '在分類中顯示',
+			'feed' => 'Show in its feed',	// TODO
+			'hidden' => '不顯示',
+			'important' => '顯示在重要的源',
+			'main_stream' => '在首頁中顯示',
+		),
+		'proxy' => '獲取訂閱源時的代理',
+		'proxy_help' => '選擇協議（例：SOCKS5）和代理地址（例：<kbd>127.0.0.1:1080</kbd> or <kbd>username:password@127.0.0.1:1080</kbd>）',	// DIRTY
+		'reset_favicon' => 'Reset to default',	// TODO
+		'selector_preview' => array(
+			'show_raw' => '顯示源碼',
+			'show_rendered' => '顯示內容',
+		),
+		'show' => array(
+			'all' => '顯示所有訂閱源',
+			'error' => '僅顯示有錯誤的訂閱源',
+		),
+		'showing' => array(
+			'error' => '正在顯示有錯誤的訂閱源',
+		),
+		'ssl_verify' => '驗證 SSL 證書安全',
+		'stats' => '統計',
+		'think_to_add' => '你可以添加一些訂閱源。',
+		'timeout' => '超時時間（秒）',
+		'title' => '標題',
+		'title_add' => '添加訂閱源',
+		'ttl' => '最小自動更新間隔',
+		'unicityCriteria' => array(
+			'_' => 'Article unicity criteria',	// TODO
+			'forced' => '<span title="Block the unicity criteria, even when the feed has duplicate articles">forced</span>',	// TODO
+			'help' => 'Relevant for invalid feeds.<br />⚠️ Changing the policy will create duplicates.',	// TODO
+			'id' => 'Standard ID (default)',	// TODO
+			'link' => 'Link',	// TODO
+			'sha1:content' => 'Content',	// TODO
+			'sha1:content_published' => 'Content + Date',	// TODO
+			'sha1:link_published' => 'Link + Date',	// TODO
+			'sha1:link_published_title' => 'Link + Date + Title',	// TODO
+			'sha1:link_published_title_content' => 'Link + Date + Title + Content',	// TODO
+			'sha1:published' => 'Date',	// TODO
+			'sha1:title' => 'Title',	// TODO
+			'sha1:title_published' => 'Title + Date',	// TODO
+			'sha1:title_published_content' => 'Title + Date + Content',	// TODO
+		),
+		'url' => '源地址',
+		'useragent' => '設置用於獲取此源的 User Agent',
+		'useragent_help' => '例：<kbd>Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0)</kbd>',
+		'validator' => '檢查訂閱源有效性',
+		'website' => '網站地址',
+		'websub' => 'WebSub 即時通知',
+	),
+	'import_export' => array(
+		'export' => array(
+			'_' => '導出',
+			'sqlite' => 'Download user database as SQLite',	// TODO
+		),
+		'export_labelled' => '導出有標籤的文章',
+		'export_opml' => '導出訂閱源列表（OPML）',
+		'export_starred' => '導出你的收藏',
+		'feed_list' => '%s 文章列表',
+		'file_to_import' => '需要導入的文件<br />（OPML、JSON 或 ZIP）',
+		'file_to_import_no_zip' => '需要導入的文件<br />（OPML 或 JSON）',
+		'import' => '導入',
+		'starred_list' => '收藏文章列表',
+		'title' => '導入/導出',
+	),
+	'menu' => array(
+		'add' => '添加訂閱源或分類',
+		'import_export' => '導入/導出',
+		'label_management' => '標籤管理',
+		'stats' => array(
+			'idle' => '長期無更新訂閱源',
+			'main' => '主要統計',
+			'repartition' => '文章分布',
+		),
+		'subscription_management' => '訂閱管理',
+		'subscription_tools' => '訂閱工具',
+	),
+	'tag' => array(
+		'auto_label' => '新增標籤給新文章',
+		'name' => '名稱',
+		'new_name' => '新名稱',
+		'old_name' => '舊名稱',
+	),
+	'title' => array(
+		'_' => '訂閱管理',
+		'add' => '添加訂閱源或分類',
+		'add_category' => '添加分類',
+		'add_dynamic_opml' => '添加訂閱源動態列表',
+		'add_feed' => '添加訂閱源',
+		'add_label' => '添加標籤',
+		'add_opml_category' => 'OPML category name',	// TODO
+		'delete_label' => '刪除標籤',
+		'feed_management' => '訂閱源管理',
+		'subscription_tools' => '訂閱工具',
+	),
+);
diff --git a/app/i18n/zh-TW/user.php b/app/i18n/zh-TW/user.php
new file mode 100644
index 000000000..1ef0f5a12
--- /dev/null
+++ b/app/i18n/zh-TW/user.php
@@ -0,0 +1,54 @@
+<?php
+
+/******************************************************************************
+ * Each entry of that file can be associated with a comment to indicate its   *
+ * state. When there is no comment, it means the entry is fully translated.   *
+ * The recognized comments are (comment matching is case-insensitive):        *
+ *   + TODO: the entry has never been translated.                             *
+ *   + DIRTY: the entry has been translated but needs to be updated.          *
+ *   + IGNORE: the entry does not need to be translated.                      *
+ * When a comment is not recognized, it is discarded.                         *
+ ******************************************************************************/
+
+return array(
+	'email' => array(
+		'feedback' => array(
+			'invalid' => '電子郵箱地址無效',
+			'required' => '必須填寫郵箱地址',
+		),
+		'validation' => array(
+			'change_email' => '您可以在 <a href="%s">使用者管理</a> 中變更您的郵箱地址',
+			'email_sent_to' => '我們已通過 <strong>%s</strong> 發送驗證郵件給您，請按其中指示來驗證郵箱地址。',
+			'feedback' => array(
+				'email_failed' => '由於伺服器配置錯誤，我們無法向您發送郵件。',
+				'email_sent' => '郵件已發送到您的郵箱中',
+				'error' => '郵箱地址無法通過驗證',
+				'ok' => '郵箱地址已成功通過驗證',
+				'unnecessary' => '該郵箱地址已被驗證',
+				'wrong_token' => '由於令牌錯誤，郵箱地址無法通過驗證。',
+			),
+			'need_to' => '您需要先驗證郵箱地址才能使用 %s',
+			'resend_email' => '重發郵件',
+			'title' => '驗證郵箱地址',
+		),
+	),
+	'mailer' => array(
+		'email_need_validation' => array(
+			'body' => '%s,歡迎',
+			'title' => '您需要驗證您的帳號',
+			'welcome' => '您已註冊 %s 現在只需點擊下方連結通過郵箱驗證即可完成註冊:',
+		),
+	),
+	'password' => array(
+		'invalid' => '無效密碼',
+	),
+	'tos' => array(
+		'feedback' => array(
+			'invalid' => '您必須接受服務條款才能註冊',
+		),
+	),
+	'username' => array(
+		'invalid' => '無效用戶名',
+		'taken' => '已存在此用戶名',
+	),
+);