[rubygems/rubygems] Onboard Rubocop Naming/MemoizedInstanceVariableName rule to Bundler.

https://github.com/rubygems/rubygems/commit/d768be0c65

lib/bundler.rb

@@ -90,7 +90,7 @@ module Bundler
 
   class << self
     def configure
-      @configured ||= configure_gem_home_and_path
+      @configure ||= configure_gem_home_and_path
     end
 
     def ui
@@ -582,7 +582,7 @@ EOF
       @bin_path = nil
       @bundler_major_version = nil
       @bundle_path = nil
-      @configured = nil
+      @configure = nil
       @configured_bundle_path = nil
       @definition = nil
       @load = nil

lib/bundler/lazy_specification.rb

@@ -122,7 +122,7 @@ module Bundler
     end
 
     def to_s
-      @__to_s ||= if platform == Gem::Platform::RUBY
+      @to_s ||= if platform == Gem::Platform::RUBY
         "#{name} (#{version})"
       else
         "#{name} (#{version}-#{platform})"

lib/bundler/ruby_version.rb

@@ -107,7 +107,7 @@ module Bundler
       ruby_engine_version = RUBY_ENGINE == "ruby" ? ruby_version : RUBY_ENGINE_VERSION.dup
       patchlevel = RUBY_PATCHLEVEL.to_s
 
-      @ruby_version ||= RubyVersion.new(ruby_version, patchlevel, ruby_engine, ruby_engine_version)
+      @system ||= RubyVersion.new(ruby_version, patchlevel, ruby_engine, ruby_engine_version)
     end
 
     private

lib/bundler/rubygems_ext.rb

@@ -66,7 +66,9 @@ module Gem
 
     alias_method :rg_extension_dir, :extension_dir
     def extension_dir
-      @bundler_extension_dir ||= if source.respond_to?(:extension_dir_name)
+      # following instance variable is already used in original method
+      # and that is the reason to prefix it with bundler_ and add rubocop exception
+      @bundler_extension_dir ||= if source.respond_to?(:extension_dir_name) # rubocop:disable Naming/MemoizedInstanceVariableName
         unique_extension_dir = [source.extension_dir_name, File.basename(full_gem_path)].uniq.join("-")
         File.expand_path(File.join(extensions_dir, unique_extension_dir))
       else
@@ -221,9 +223,9 @@ module Gem
         protected
 
         def _requirements_sorted?
-          return @_are_requirements_sorted if defined?(@_are_requirements_sorted)
+          return @_requirements_sorted if defined?(@_requirements_sorted)
           strings = as_list
-          @_are_requirements_sorted = strings == strings.sort
+          @_requirements_sorted = strings == strings.sort
         end
 
         def _with_sorted_requirements

spec/bundler/bundler/ruby_version_spec.rb

@@ -400,19 +400,19 @@ RSpec.describe "Bundler::RubyVersion and its subclasses" do
       let(:bundler_system_ruby_version) { subject }
 
       around do |example|
-        if Bundler::RubyVersion.instance_variable_defined?("@ruby_version")
+        if Bundler::RubyVersion.instance_variable_defined?("@system")
           begin
-            old_ruby_version = Bundler::RubyVersion.instance_variable_get("@ruby_version")
-            Bundler::RubyVersion.remove_instance_variable("@ruby_version")
+            old_ruby_version = Bundler::RubyVersion.instance_variable_get("@system")
+            Bundler::RubyVersion.remove_instance_variable("@system")
             example.run
           ensure
-            Bundler::RubyVersion.instance_variable_set("@ruby_version", old_ruby_version)
+            Bundler::RubyVersion.instance_variable_set("@system", old_ruby_version)
           end
         else
           begin
             example.run
           ensure
-            Bundler::RubyVersion.remove_instance_variable("@ruby_version")
+            Bundler::RubyVersion.remove_instance_variable("@system")
           end
         end
       end