gistfile1.txt

irb(main):013:0> ActionView::Base.ancestors.include?(ActionView::Helpers)
=> true
irb(main):015:0> ActionView::Base.ancestors.include?(ActionView::Helpers::CacheHelper)
=> false
irb(main):016:0> ActionView::Helpers.ancestors.include?(ActionView::Helpers::CacheHelper)
=> true

irb(main):017:0> ActionView::Base.ancestors
=> [ActionView::Base, #<Module:0x101d54a88>, ActionDispatch::Routing::Helpers, ActionController::PolymorphicRoutes, WillPaginate::ViewHelpers, ActionView::Context, ActionView::CompiledTemplates, ActionView::Helpers, ActiveSupport::Benchmarkable, ActionView::Rendering, ActionView::Partials, ERB::Util, Object, Mocha::ObjectMethods, Base64::Deprecated, Base64, ActiveSupport::Dependencies::Loadable, Arel::Sql::ObjectExtensions, Arel::ObjectExtensions, Kernel]
irb(main):018:0> ActionView::Helpers.ancestors
=> [ActionView::Helpers, ActionView::Helpers::UrlHelper, ActionView::Helpers::TranslationHelper, ActionView::Helpers::TextHelper, ActionView::Helpers::TagHelper, ActionView::Helpers::ScriptaculousHelper, ActionView::Helpers::SanitizeHelper, ActionView::Helpers::RecordTagHelper, ActionView::Helpers::RecordIdentificationHelper, ActionView::Helpers::RawOutputHelper, ActionView::Helpers::NumberHelper, ActionView::Helpers::JavaScriptHelper, ActionView::Helpers::PrototypeHelper, ActionView::Helpers::FormTagHelper, ActionView::Helpers::FormOptionsHelper, ERB::Util, ActionView::Helpers::FormHelper, ActionView::Helpers::DebugHelper, ActionView::Helpers::DateHelper, ActionView::Helpers::CaptureHelper, ActionView::Helpers::CacheHelper, ActionView::Helpers::AtomFeedHelper, ActionView::Helpers::AssetTagHelper, ActionView::Helpers::ActiveModelHelper, ActiveSupport::Benchmarkable]