Enable Rubocop accessor grouping, fix existing offenses (#8293)

Merge pull request 8293

.rubocop.yml

@@ -273,7 +273,7 @@ Security/YAMLLoad:
 Style/AccessModifierDeclarations:
   Enabled: false
 Style/AccessorGrouping:
-  Enabled: false
+  Enabled: true
 Style/Alias:
   EnforcedStyle: prefer_alias_method
 Style/AndOr:

lib/jekyll/cache.rb

@@ -11,14 +11,10 @@ module Jekyll
     @disk_cache_enabled = true
 
     class << self
-      # class-wide cache location
-      attr_accessor :cache_dir
+      attr_accessor :cache_dir # class-wide cache location
 
-      # class-wide directive to write cache to disk
-      attr_reader :disk_cache_enabled
-
-      # class-wide base cache reader
-      attr_reader :base_cache
+      attr_reader :base_cache, # class-wide base cache reader
+                  :disk_cache_enabled # class-wide directive to write cache to disk
 
       # Disable Marshaling cached items to disk
       def disable_disk_cache!

lib/jekyll/commands/serve/live_reload_reactor.rb

@@ -8,9 +8,7 @@ module Jekyll
   module Commands
     class Serve
       class LiveReloadReactor
-        attr_reader :started_event
-        attr_reader :stopped_event
-        attr_reader :thread
+        attr_reader :started_event, :stopped_event, :thread
 
         def initialize
           @websockets = []

lib/jekyll/drops/unified_payload_drop.rb

@@ -5,8 +5,8 @@ module Jekyll
     class UnifiedPayloadDrop < Drop
       mutable true
 
-      attr_accessor :page, :layout, :content, :paginator
-      attr_accessor :highlighter_prefix, :highlighter_suffix
+      attr_accessor :content, :page, :layout, :paginator,
+                    :highlighter_prefix, :highlighter_suffix
 
       def jekyll
         JekyllDrop.global

lib/jekyll/excerpt.rb

@@ -4,8 +4,7 @@ module Jekyll
   class Excerpt
     extend Forwardable
 
-    attr_accessor :doc
-    attr_accessor :content, :ext
+    attr_accessor :content, :doc, :ext
     attr_writer   :output
 
     def_delegators :@doc,

lib/jekyll/layout.rb

@@ -4,26 +4,14 @@ module Jekyll
   class Layout
     include Convertible
 
-    # Gets the Site object.
-    attr_reader :site
+    attr_accessor :content, # content of layout
+                  :data,    # the Hash that holds the metadata for this layout
+                  :ext      # extension of layout
 
-    # Gets the name of this layout.
-    attr_reader :name
-
-    # Gets the path to this layout.
-    attr_reader :path
-
-    # Gets the path to this layout relative to its base
-    attr_reader :relative_path
-
-    # Gets/Sets the extension of this layout.
-    attr_accessor :ext
-
-    # Gets/Sets the Hash that holds the metadata for this layout.
-    attr_accessor :data
-
-    # Gets/Sets the content of this layout.
-    attr_accessor :content
+    attr_reader :name, # name of layout
+                :path, # path to layout
+                :site, # the Site object
+                :relative_path # path to layout relative to its base
 
     # Initialize a new Layout.
     #

lib/jekyll/page.rb

@@ -5,9 +5,7 @@ module Jekyll
     include Convertible
 
     attr_writer :dir
-    attr_accessor :site, :pager
-    attr_accessor :name, :ext, :basename
-    attr_accessor :data, :content, :output
+    attr_accessor :basename, :content, :data, :ext, :name, :output, :pager, :site
 
     alias_method :extname, :ext
 

lib/jekyll/site.rb

@@ -2,15 +2,15 @@
 
 module Jekyll
   class Site
-    attr_reader   :source, :dest, :cache_dir, :config
-    attr_accessor :layouts, :pages, :static_files, :drafts, :inclusions,
-                  :exclude, :include, :lsi, :highlighter, :permalink_style,
-                  :time, :future, :unpublished, :safe, :plugins, :limit_posts,
-                  :show_drafts, :keep_files, :baseurl, :data, :file_read_opts,
-                  :gems, :plugin_manager, :theme
+    attr_accessor :baseurl, :converters, :data, :drafts, :exclude,
+                  :file_read_opts, :future, :gems, :generators, :highlighter,
+                  :include, :inclusions, :keep_files, :layouts, :limit_posts,
+                  :lsi, :pages, :permalink_style, :plugin_manager, :plugins,
+                  :reader, :safe, :show_drafts, :static_files, :theme, :time,
+                  :unpublished
 
-    attr_accessor :converters, :generators, :reader
-    attr_reader   :regenerator, :liquid_renderer, :includes_load_paths, :filter_cache, :profiler
+    attr_reader :cache_dir, :config, :dest, :filter_cache, :includes_load_paths,
+                :liquid_renderer, :profiler, :regenerator, :source
 
     # Public: Initialize a new Site.
     #