Ticket #7875: 7875.8.diff

wp-admin/includes/class-wp-upgrader.php

@@ -722 +722 @@
                 if ( is_string($errors) ) {
                         $this->feedback($errors);
                 } elseif ( is_wp_error($errors) && $errors->get_error_code() ) {
-                        foreach ( $errors->get_error_messages() as $message )
-                                $this->feedback($message);
+                        foreach ( $errors->get_error_messages() as $message ) {
+                                if ( $errors->get_error_data() )
+                                        $this->feedback($message . ' ' . $errors->get_error_data() );
+                                else
+                                        $this->feedback($message);
+                        }
                 }
         }
 
@@ -731 +735 @@
                 if ( isset( $this->upgrader->strings[$string]) )
                         $string = $this->upgrader->strings[$string];
 
-                $args = func_get_args();
-                $args = array_splice($args, 1);
-                if ( !empty($args) )
-                        $string = vsprintf($string, $args);
+                if ( strpos($string, '%') !== false ) {
+                        $args = func_get_args();
+                        $args = array_splice($args, 1);
+                        if ( !empty($args) )
+                                $string = vsprintf($string, $args);
+                }
                 if ( empty($string) )
                         return;
                 show_message($string);