Add rubocop to our build. (#5004)

lib/email/receiver.rb

@@ -166,7 +166,7 @@ module Email
           elsif bounce_score >= SiteSetting.bounce_score_threshold
             # NOTE: we check bounce_score before sending emails, nothing to do
             # here other than log it happened.
-            reason = I18n.t("user.email.revoked", { email: user.email, date: user.user_stat.reset_bounce_score_after })
+            reason = I18n.t("user.email.revoked", email: user.email, date: user.user_stat.reset_bounce_score_after)
             StaffActionLogger.new(Discourse.system_user).log_revoke_email(user, reason)
           end
         end
@@ -466,7 +466,7 @@ module Email
       true
     end
 
-    def self.reply_by_email_address_regex(extract_reply_key=true)
+    def self.reply_by_email_address_regex(extract_reply_key = true)
       reply_addresses = [SiteSetting.reply_by_email_address]
       reply_addresses << (SiteSetting.alternative_reply_by_email_addresses.presence || "").split("|")
 
@@ -538,11 +538,11 @@ module Email
       PostActionType.types[:like] if likes.include?(body.strip.downcase)
     end
 
-    def create_topic(options={})
+    def create_topic(options = {})
       create_post_with_attachments(options)
     end
 
-    def create_reply(options={})
+    def create_reply(options = {})
       raise TopicNotFoundError if options[:topic].nil? || options[:topic].trashed?
 
       if post_action_type = post_action_for(options[:raw])
@@ -572,7 +572,7 @@ module Email
       end
     end
 
-    def create_post_with_attachments(options={})
+    def create_post_with_attachments(options = {})
       # deal with attachments
       attachments.each do |attachment|
         tmp = Tempfile.new(["discourse-email-attachment", File.extname(attachment.filename)])
@@ -612,7 +612,7 @@ module Email
       end
     end
 
-    def create_post(options={})
+    def create_post(options = {})
       options[:via_email] = true
       options[:raw_email] = @raw_email
 
@@ -622,7 +622,7 @@ module Email
         raise InvalidPost, "No post creation date found. Is the e-mail missing a Date: header?"
       end
 
-      options[:created_at]   = DateTime.now if options[:created_at] > DateTime.now
+      options[:created_at] = DateTime.now if options[:created_at] > DateTime.now
 
       is_private_message = options[:archetype] == Archetype.private_message ||
                            options[:topic].try(:private_message?)