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diff --git a/www/wiki/includes/collation/CollationCkb.php b/www/wiki/includes/collation/CollationCkb.php
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+<?php
+/**
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+/**
+ * Workaround for the lack of support of Sorani Kurdish / Central Kurdish language ('ckb') in ICU.
+ *
+ * Uses the same collation rules as Persian / Farsi ('fa'), but different characters for digits.
+ *
+ * @since 1.23
+ */
+class CollationCkb extends IcuCollation {
+	public function __construct() {
+		// This will set $locale and collators, which affect the actual sorting order
+		parent::__construct( 'fa' );
+		// Override the 'fa' language set by parent constructor, which affects #getFirstLetterData()
+		$this->digitTransformLanguage = Language::factory( 'ckb' );
+	}
+}