lib/appmap/hook/method.rb in appmap-0.72.3 vs lib/appmap/hook/method.rb in appmap-0.72.4

@@ -97,10 +97,17 @@
             end
           end
         end
         hook_method_def = hook_method_def.ruby2_keywords if hook_method_def.respond_to?(:ruby2_keywords)
 
-        hook_class.ancestors.first.define_method_with_arity(hook_method.name, hook_method.arity, hook_method_def)
+        hook_method_parameters = hook_method.parameters.dup.freeze
+        hook_class.ancestors.first.tap do |cls|
+          cls.define_method_with_arity(hook_method.name, hook_method.arity, hook_method_def)
+          redefined_method = cls.instance_method(hook_method.name)
+          redefined_method.singleton_class.module_eval do
+            define_method(:parameters) { hook_method_parameters }
+          end
+        end
       end
 
       protected
 
       def before_hook(receiver, defined_class, args)