From 8ced7b24e5aee639ac8a3fe2e341bf7610cbe007 Mon Sep 17 00:00:00 2001
From: Max Semenik <maxsem@users.mediawiki.org>
Date: Sat, 19 Feb 2011 07:27:27 +0000
Subject: [PATCH] Follow-up r76456: more thorough check for UTF-8 support. Now
 it checks whether PCRE can actually convert from uppercase to lowercase and
 vice versa.

---
 includes/installer/Installer.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/includes/installer/Installer.php b/includes/installer/Installer.php
index 3677e786bf..53c19ea87b 100644
--- a/includes/installer/Installer.php
+++ b/includes/installer/Installer.php
@@ -725,7 +725,7 @@ abstract class Installer {
 			return false;
 		}
 		wfSuppressWarnings();
-		$regexd = preg_replace( '/[\x{0400}-\x{04FF}]/u', '', '-АБВГД-' );
+		$regexd = preg_replace( '/[\x{0430}-\x{04FF}]/iu', '', '-АБВГД-' );
 		wfRestoreWarnings();
 		if ( $regexd != '--' ) {
 			$this->showMessage( 'config-pcre-no-utf8' );
-- 
2.20.1