Back out the bit of r57558 for allowing lowercased usernames. That needs more testing.

diff --git a/includes/User.php b/includes/User.php
index a5a5423..ffc0963 100644 (file)
--- a/includes/User.php
+++ b/includes/User.php
@@ -521,7 +521,7 @@ class User {
                || User::isIP( $name )
                || strpos( $name, '/' ) !== false
                || strlen( $name ) > $wgMaxNameChars
-               || $name != Title::capitalize( $name, NS_USER ) ) {
+               || $name != $wgContLang->ucfirst( $name ) ) {
                        wfDebugLog( 'username', __METHOD__ .
                                ": '$name' invalid due to empty, IP, slash, length, or lowercase" );
                        return false;