lib/logging/layouts/parseable.rb in logging-2.2.0 vs lib/logging/layouts/parseable.rb in logging-2.2.1

@@ -219,10 +219,11 @@
     def format_obj( obj )
       case obj
       when Exception
         h = { :class   => obj.class.name,
               :message => obj.message }
-        h[:backtrace] = obj.backtrace if @backtrace && !obj.backtrace.nil?
+        h[:backtrace] = obj.backtrace if backtrace? && !obj.backtrace.nil?
+        h[:cause] = format_obj(obj.cause) if defined?(obj.cause) && !obj.cause.nil?
         h
       when Time
         iso8601_format(obj)
       else
         obj