Ticket #30049: 30049.diff

src/wp-includes/load.php

@@ -974 +974 @@
                         $locales[] = $wp_local_package;
                 }
 
+                // Try the browser's locale
+                if ( ! empty( $_SERVER['HTTP_ACCEPT_LANGUAGE'] ) ) {
+                        if ( preg_match( '#[a-z]{2,3}-[a-zA-Z0-9-]+#', trim( $_SERVER['HTTP_ACCEPT_LANGUAGE'] ), $matches ) ) {
+                                $locales[] = str_replace( '-', '_', $matches[0] );
+                        }
+                }
+
                 if ( ! $locales ) {
                         break;
                 }