Add Xiang Chinese to Names.php

Also, we have well over 400 languages now, and RELEASE-NOTES
are updated accordingly.

Bug: T291899
Change-Id: I90877b5f0cde678537eed1a68e0a8fbdddb326ff

RELEASE-NOTES-1.38

@@ -86,11 +86,11 @@ For notes on 1.36.x and older releases, see HISTORY.
 * …
 
 === Languages updated in 1.38 ===
-MediaWiki supports over 350 languages. Many localisations are updated regularly.
+MediaWiki supports over 400 languages. Many localisations are updated regularly.
 Below only new and removed languages are listed, as well as changes to languages
 because of Phabricator reports.
 
-* …
+* (T291899) Added language support for Xiang Chinese (hsn).
 
 === Breaking changes in 1.38 ===
 * (T291008) The IP class, deprecated since 1.35 in favor of the IPUtils library,

includes/languages/data/Names.php

@@ -201,6 +201,7 @@ class Names {
 		'hr' => 'hrvatski', # Croatian
 		'hrx' => 'Hunsrik', # Riograndenser Hunsrückisch
 		'hsb' => 'hornjoserbsce', # Upper Sorbian
+		'hsn' => '湘语', # Xiang Chinese
 		'ht' => 'Kreyòl ayisyen', # Haitian Creole French
 		'hu' => 'magyar', # Hungarian
 		'hu-formal' => "magyar (formal)", # Hungarian formal address

languages/messages/MessagesHsn.php

@@ -0,0 +1,39 @@
+<?php
+/** Xiang Chinese (湘语)
+ *
+ * To improve a translation please visit https://translatewiki.net
+ *
+ * @ingroup Language
+ * @file
+ *
+ * @author Amir E. Aharoni
+ */
+
+$fallback = 'zh-hans';
+
+$linkTrail = '/^()(.*)$/sD';
+
+// Copied from Chinese (Simplified)
+$datePreferences = [
+	'default',
+	'ISO 8601',
+];
+$defaultDateFormat = 'zh';
+$dateFormats = [
+	'zh time' => 'H:i',
+	'zh date' => 'Y年n月j日 (l)',
+	'zh both' => 'Y年n月j日 (D) H:i',
+];
+
+// Copied from Chinese (Simplified)
+$bookstoreList = [
+	'AddALL' => 'http://www.addall.com/New/Partner.cgi?query=$1&type=ISBN',
+	'Barnes & Noble' => 'http://search.barnesandnoble.com/bookSearch/isbnInquiry.asp?isbn=$1',
+	'亚马逊' => 'https://www.amazon.com/exec/obidos/ISBN=$1',
+	'卓越亚马逊' => 'https://www.amazon.cn/mn/advancedSearchApp?isbn=$1',
+	'当当网' => 'http://search.dangdang.com/search.aspx?key=$1',
+	'博客来书店' => 'http://www.books.com.tw/exep/prod/booksfile.php?item=$1',
+	'三民书店' => 'http://www.sanmin.com.tw/page-qsearch.asp?ct=search_isbn&qu=$1',
+	'天下书店' => 'http://www.cwbook.com.tw/search/result1.jsp?field=2&keyWord=$1',
+	'新丝路书店' => 'http://www.silkbook.com/function/Search_list_book_data.asp?item=5&text=$1'
+];