Some stylistics changes

actionpack/lib/action_controller/railtie.rb

@@ -91,12 +91,13 @@ class Railtie < Rails::Railtie # :nodoc:
     initializer "action_controller.query_log_tags" do |app|
       ActiveSupport.on_load(:active_record) do
         if app.config.active_record.query_log_tags_enabled && app.config.action_controller.log_query_tags_around_actions != false
-          ActiveRecord::QueryLogs.taggings.merge! \
+          ActiveRecord::QueryLogs.taggings.merge!(
             controller:            -> { context[:controller]&.controller_name },
             action:                -> { context[:controller]&.action_name },
             namespaced_controller: -> { context[:controller]&.class&.name }
+          )
 
-          ActiveRecord::QueryLogs.tags << :controller << :action
+          ActiveRecord::QueryLogs.tags + [:controller, :action]
 
           ActiveSupport.on_load(:action_controller) do
             include ActionController::QueryTags

activerecord/lib/active_record/query_logs.rb

@@ -180,8 +180,9 @@ def exec_query(sql, *args, **kwargs)
 end
 
 ActiveSupport.on_load(:active_record) do
-  ActiveRecord::QueryLogs.taggings.merge! \
+  ActiveRecord::QueryLogs.taggings.merge!(
     socket:   -> { ActiveRecord::Base.connection_db_config.socket },
     db_host:  -> { ActiveRecord::Base.connection_db_config.host },
     database: -> { ActiveRecord::Base.connection_db_config.database }
+  )
 end

activerecord/lib/active_record/railtie.rb

@@ -343,9 +343,10 @@ class Railtie < Rails::Railtie # :nodoc:
     initializer "active_record.query_log_tags_config" do |app|
       config.after_initialize do
         if app.config.active_record.query_log_tags_enabled
-          ActiveRecord::QueryLogs.taggings.merge! \
+          ActiveRecord::QueryLogs.taggings.merge!(
             application:  -> { @application_name ||= Rails.application.class.name.split("::").first },
             pid:          -> { Process.pid }
+          )
 
           if app.config.active_record.query_log_tags.present?
             ActiveRecord::QueryLogs.tags = app.config.active_record.query_log_tags