1 files changed, 12 insertions, 0 deletions
diff --git a/ext/ripper/lib/ripper/sexp.rb b/ext/ripper/lib/ripper/sexp.rb
index d7bf530088..b52dd30ddc 100644
--- a/ext/ripper/lib/ripper/sexp.rb
+++ b/ext/ripper/lib/ripper/sexp.rb
@@ -134,6 +134,18 @@ class Ripper
       list
     end
 
+    def on_mlhs_paren(list)
+      [:mlhs, *list]
+    end
+
+    def on_mlhs_add_star(list, star)
+      list.push([:rest_param, star])
+    end
+
+    def on_mlhs_add_post(list, post)
+      list.concat(post)
+    end
+
     PARSER_EVENT_TABLE.each do |event, arity|
       if /_new\z/ =~ event and arity == 0
         alias_method "on_#{event}", :_dispatch_event_new