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diff --git a/includes/libs/normal/UtfNormalUtil.php b/includes/libs/normal/UtfNormalUtil.php
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+<?php
+/**
+ * Some of these functions are adapted from places in MediaWiki.
+ * Should probably merge them for consistency.
+ *
+ * Copyright © 2004 Brion Vibber <brion@pobox.com>
+ * https://www.mediawiki.org/
+ *
+ * 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
+ * @ingroup UtfNormal
+ */
+
+
+use UtfNormal\Utils;
+/**
+ * Return UTF-8 sequence for a given Unicode code point.
+ *
+ * @param $codepoint Integer:
+ * @return String
+ * @throws InvalidArgumentException if fed out of range data.
+ * @public
+ * @deprecated since 1.25, use UtfNormal\Utils directly
+ */
+function codepointToUtf8( $codepoint ) {
+	return Utils::codepointToUtf8( $codepoint );
+}
+
+/**
+ * Take a series of space-separated hexadecimal numbers representing
+ * Unicode code points and return a UTF-8 string composed of those
+ * characters. Used by UTF-8 data generation and testing routines.
+ *
+ * @param $sequence String
+ * @return String
+ * @throws InvalidArgumentException if fed out of range data.
+ * @private
+ * @deprecated since 1.25, use UtfNormal\Utils directly
+ */
+function hexSequenceToUtf8( $sequence ) {
+	return Utils::hexSequenceToUtf8( $sequence );
+}
+
+/**
+ * Take a UTF-8 string and return a space-separated series of hex
+ * numbers representing Unicode code points. For debugging.
+ *
+ * @fixme this is private but extensions + maint scripts are using it
+ * @param string $str UTF-8 string.
+ * @return string
+ * @private
+ */
+function utf8ToHexSequence( $str ) {
+	$buf = '';
+	foreach ( preg_split( '//u', $str, -1, PREG_SPLIT_NO_EMPTY ) as $cp ) {
+		$buf .= sprintf( '%04x ', UtfNormal\Utils::utf8ToCodepoint( $cp ) );
+	}
+
+	return rtrim( $buf );
+}
+
+/**
+ * Determine the Unicode codepoint of a single-character UTF-8 sequence.
+ * Does not check for invalid input data.
+ *
+ * @param $char String
+ * @return Integer
+ * @public
+ * @deprecated since 1.25, use UtfNormal\Utils directly
+ */
+function utf8ToCodepoint( $char ) {
+	return Utils::utf8ToCodepoint( $char );
+}
+
+/**
+ * Escape a string for inclusion in a PHP single-quoted string literal.
+ *
+ * @param string $string string to be escaped.
+ * @return String: escaped string.
+ * @public
+ * @deprecated since 1.25, use UtfNormal\Utils directly
+ */
+function escapeSingleString( $string ) {
+	return Utils::escapeSingleString( $string );
+}