Use kwags to make the argument meaning explicit

actionview/lib/action_view/helpers/tags/label.rb

@@ -17,7 +17,7 @@ def translation
             method_and_value = @tag_value.present? ? "#{@method_name}.#{@tag_value}" : @method_name
 
             content ||= Translator
-              .new(object, @object_name, method_and_value, "helpers.label")
+              .new(object, @object_name, method_and_value, scope: "helpers.label")
               .call
             content ||= @method_name.humanize
 

actionview/lib/action_view/helpers/tags/placeholderable.rb

@@ -10,7 +10,7 @@ def initialize(*)
             method_and_value = tag_value.is_a?(TrueClass) ? @method_name : "#{@method_name}.#{tag_value}"
 
             placeholder ||= Tags::Translator
-              .new(object, @object_name, method_and_value, "helpers.placeholder")
+              .new(object, @object_name, method_and_value, scope: "helpers.placeholder")
               .call
             placeholder ||= @method_name.humanize
             @options[:placeholder] = placeholder

actionview/lib/action_view/helpers/tags/translator.rb

@@ -2,21 +2,21 @@ module ActionView
   module Helpers
     module Tags # :nodoc:
       class Translator # :nodoc:
-        def initialize(object, object_name, method_and_value, i18n_scope)
+        def initialize(object, object_name, method_and_value, scope:)
           @object_name = object_name.gsub(/\[(.*)_attributes\]\[\d+\]/, '.\1')
           @method_and_value = method_and_value
-          @i18n_scope = i18n_scope
+          @scope = scope
           @model = object.respond_to?(:to_model) ? object.to_model : object
         end
 
         def call
-          translated_attribute = I18n.t("#{object_name}.#{method_and_value}", default: i18n_default, scope: i18n_scope).presence
+          translated_attribute = I18n.t("#{object_name}.#{method_and_value}", default: i18n_default, scope: scope).presence
           translated_attribute || human_attribute_name
         end
 
         private
 
-        attr_reader :object_name, :method_and_value, :i18n_scope, :model
+        attr_reader :object_name, :method_and_value, :scope, :model
 
         def i18n_default
           if model