diff --git a/lib/jekyll/readers/post_reader.rb b/lib/jekyll/readers/post_reader.rb
index f7a44ca7..ec5bc7ad 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
@@ -32,9 +32,10 @@ module Jekyll
     #
     # Returns nothing.
     def read_publishable(dir, magic_dir, matcher)
-      read_content(dir, magic_dir, matcher).tap do |docs|
+      documents = read_content(dir, magic_dir, matcher).tap do |docs|
         docs.each(&:read)
-      end.select do |doc|
+      end
+      documents.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"
@@ -57,7 +58,7 @@ 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?)