diff --git a/.rubocop.yml b/.rubocop.yml
index 61ef85ef..f3aae6fe 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -12,11 +12,6 @@ AllCops:
   - lib/jekyll/document.rb
   - lib/jekyll/filters.rb
   - lib/jekyll/frontmatter_defaults.rb
-  - lib/jekyll/reader.rb
-  - lib/jekyll/readers/layout_reader.rb
-  - lib/jekyll/readers/page_reader.rb
-  - lib/jekyll/readers/post_reader.rb
-  - lib/jekyll/readers/static_file_reader.rb
   - lib/jekyll/regenerator.rb
   - lib/jekyll/renderer.rb
   - lib/jekyll/site.rb
diff --git a/lib/jekyll/reader.rb b/lib/jekyll/reader.rb
index c9ded560..abbe923f 100644
--- a/lib/jekyll/reader.rb
+++ b/lib/jekyll/reader.rb
@@ -1,5 +1,5 @@
 # encoding: UTF-8
-require 'csv'
+require "csv"
 
 module Jekyll
   class Reader
@@ -16,7 +16,7 @@ module Jekyll
       @site.layouts = LayoutReader.new(site).read
       read_directories
       sort_files!
-      @site.data = DataReader.new(site).read(site.config['data_dir'])
+      @site.data = DataReader.new(site).read(site.config["data_dir"])
       CollectionReader.new(site).read
     end
 
@@ -34,13 +34,15 @@ module Jekyll
     # dir - The String relative path of the directory to read. Default: ''.
     #
     # Returns nothing.
-    def read_directories(dir = '')
+    def read_directories(dir = "")
       base = site.in_source_dir(dir)
 
-      dot = Dir.chdir(base) { filter_entries(Dir.entries('.'), base) }
+      dot = Dir.chdir(base) { filter_entries(Dir.entries("."), base) }
       dot_dirs = dot.select { |file| File.directory?(@site.in_source_dir(base, file)) }
       dot_files = (dot - dot_dirs)
-      dot_pages = dot_files.select { |file| Utils.has_yaml_header?(@site.in_source_dir(base, file)) }
+      dot_pages = dot_files.select do |file|
+        Utils.has_yaml_header?(@site.in_source_dir(base, file))
+      end
       dot_static_files = dot_files - dot_pages
 
       retrieve_posts(dir)
@@ -71,7 +73,9 @@ module Jekyll
       dot_dirs.map do |file|
         dir_path = site.in_source_dir(dir, file)
         rel_path = File.join(dir, file)
-        @site.reader.read_directories(rel_path) unless @site.dest.sub(/\/$/, '') == dir_path
+        unless @site.dest.sub(%r!/$!, "") == dir_path
+          @site.reader.read_directories(rel_path)
+        end
       end
     end
 
@@ -119,7 +123,7 @@ module Jekyll
     def get_entries(dir, subfolder)
       base = site.in_source_dir(dir, subfolder)
       return [] unless File.exist?(base)
-      entries = Dir.chdir(base) { filter_entries(Dir['**/*'], base) }
+      entries = Dir.chdir(base) { filter_entries(Dir["**/*"], base) }
       entries.delete_if { |e| File.directory?(site.in_source_dir(base, e)) }
     end
   end
diff --git a/lib/jekyll/readers/layout_reader.rb b/lib/jekyll/readers/layout_reader.rb
index df8931cb..985491c6 100644
--- a/lib/jekyll/readers/layout_reader.rb
+++ b/lib/jekyll/readers/layout_reader.rb
@@ -8,11 +8,13 @@ module Jekyll
 
     def read
       layout_entries.each do |layout_file|
-        @layouts[layout_name(layout_file)] = Layout.new(site, layout_directory, layout_file)
+        @layouts[layout_name(layout_file)] = \
+          Layout.new(site, layout_directory, layout_file)
       end
 
       theme_layout_entries.each do |layout_file|
-        @layouts[layout_name(layout_file)] ||= Layout.new(site, theme_layout_directory, layout_file)
+        @layouts[layout_name(layout_file)] ||= \
+          Layout.new(site, theme_layout_directory, layout_file)
       end
 
       @layouts
@@ -39,7 +41,7 @@ module Jekyll
     def entries_in(dir)
       entries = []
       within(dir) do
-        entries = EntryFilter.new(site).filter(Dir['**/*.*'])
+        entries = EntryFilter.new(site).filter(Dir["**/*.*"])
       end
       entries
     end
@@ -54,15 +56,13 @@ module Jekyll
     end
 
     def layout_directory_inside_source
-      site.in_source_dir(site.config['layouts_dir'])
+      site.in_source_dir(site.config["layouts_dir"])
     end
 
     def layout_directory_in_cwd
-      dir = Jekyll.sanitized_path(Dir.pwd, site.config['layouts_dir'])
+      dir = Jekyll.sanitized_path(Dir.pwd, site.config["layouts_dir"])
       if File.directory?(dir) && !site.safe
         dir
-      else
-        nil
       end
     end
   end
diff --git a/lib/jekyll/readers/page_reader.rb b/lib/jekyll/readers/page_reader.rb
index 97748c01..507c609e 100644
--- a/lib/jekyll/readers/page_reader.rb
+++ b/lib/jekyll/readers/page_reader.rb
@@ -14,7 +14,9 @@ module Jekyll
     #
     # Returns an array of static pages.
     def read(files)
-      files.map { |page| @unfiltered_content << Page.new(@site, @site.source, @dir, page) }
+      files.map do |page|
+        @unfiltered_content << Page.new(@site, @site.source, @dir, page)
+      end
       @unfiltered_content.select { |page| site.publisher.publish?(page) }
     end
   end
diff --git a/lib/jekyll/readers/post_reader.rb b/lib/jekyll/readers/post_reader.rb
index f7a44ca7..123709e7 100644
--- a/lib/jekyll/readers/post_reader.rb
+++ b/lib/jekyll/readers/post_reader.rb
@@ -12,7 +12,7 @@ module Jekyll
     #
     # Returns nothing.
     def read_drafts(dir)
-      read_publishable(dir, '_drafts', Document::DATELESS_FILENAME_MATCHER)
+      read_publishable(dir, "_drafts", Document::DATELESS_FILENAME_MATCHER)
     end
 
     # Read all the files in <source>/<dir>/_posts and create a new Document
@@ -22,7 +22,7 @@ module Jekyll
     #
     # Returns nothing.
     def read_posts(dir)
-      read_publishable(dir, '_posts', Document::DATE_FILENAME_MATCHER)
+      read_publishable(dir, "_posts", Document::DATE_FILENAME_MATCHER)
     end
 
     # Read all the files in <source>/<dir>/<magic_dir> and create a new
@@ -32,15 +32,14 @@ module Jekyll
     #
     # Returns nothing.
     def read_publishable(dir, magic_dir, matcher)
-      read_content(dir, magic_dir, matcher).tap do |docs|
-        docs.each(&:read)
-      end.select do |doc|
-        site.publisher.publish?(doc).tap do |will_publish|
-          if !will_publish && site.publisher.hidden_in_the_future?(doc)
-            Jekyll.logger.debug "Skipping:", "#{doc.relative_path} has a future date"
+      read_content(dir, magic_dir, matcher).tap { |docs| docs.each(&:read) }
+        .select do |doc|
+          site.publisher.publish?(doc).tap do |will_publish|
+            if !will_publish && site.publisher.hidden_in_the_future?(doc)
+              Jekyll.logger.debug "Skipping:", "#{doc.relative_path} has a future date"
+            end
           end
         end
-      end
     end
 
     # Read all the content files from <source>/<dir>/magic_dir
@@ -57,7 +56,7 @@ module Jekyll
         next unless entry =~ matcher
         path = @site.in_source_dir(File.join(dir, magic_dir, entry))
         Document.new(path, {
-          :site => @site,
+          :site       => @site,
           :collection => @site.posts
         })
       end.reject(&:nil?)
diff --git a/lib/jekyll/readers/static_file_reader.rb b/lib/jekyll/readers/static_file_reader.rb
index 8def1365..1d43d69c 100644
--- a/lib/jekyll/readers/static_file_reader.rb
+++ b/lib/jekyll/readers/static_file_reader.rb
@@ -14,7 +14,9 @@ module Jekyll
     #
     # Returns an array of static files.
     def read(files)
-      files.map { |file| @unfiltered_content << StaticFile.new(@site, @site.source, @dir, file) }
+      files.map do |file|
+        @unfiltered_content << StaticFile.new(@site, @site.source, @dir, file)
+      end
       @unfiltered_content
     end
   end