Remove the monkey-patch for supporting operators.

Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: git://github.com/dblock/slack-ruby-bot.git
-  revision: fa17932abf5ad0c5d25c652f4a46cec1d93a99d4
+  revision: 8385892c5ff6b7860435ca4b1f46017bb45175db
   specs:
     slack-ruby-bot (0.2.0)
       activesupport
@@ -28,7 +28,7 @@ GEM
     eventmachine (1.0.7)
     faraday (0.9.1)
       multipart-post (>= 1.2, < 3)
-    faraday_middleware (0.9.1)
+    faraday_middleware (0.9.2)
       faraday (>= 0.7.4, < 0.10)
     faraday_middleware-parse_oj (0.3.0)
       faraday (~> 0.9.0)
@@ -50,34 +50,34 @@ GEM
     launchy (2.4.3)
       addressable (~> 2.3)
     minitest (5.7.0)
-    multi_json (1.11.1)
+    multi_json (1.11.2)
     multipart-post (2.0.0)
     oj (2.12.9)
     parser (2.3.0.pre.2)
       ast (>= 1.1, < 3.0)
     powerpack (0.1.1)
-    puma (2.11.0)
+    puma (2.11.3)
       rack (>= 1.1, < 2.0)
-    rack (1.6.0)
+    rack (1.6.4)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.3)
       rack (>= 1.0)
     rainbow (2.0.0)
     rake (10.4.2)
-    rspec (3.2.0)
-      rspec-core (~> 3.2.0)
-      rspec-expectations (~> 3.2.0)
-      rspec-mocks (~> 3.2.0)
-    rspec-core (3.2.3)
-      rspec-support (~> 3.2.0)
-    rspec-expectations (3.2.1)
+    rspec (3.3.0)
+      rspec-core (~> 3.3.0)
+      rspec-expectations (~> 3.3.0)
+      rspec-mocks (~> 3.3.0)
+    rspec-core (3.3.1)
+      rspec-support (~> 3.3.0)
+    rspec-expectations (3.3.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.2.0)
-    rspec-mocks (3.2.1)
+      rspec-support (~> 3.3.0)
+    rspec-mocks (3.3.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.2.0)
-    rspec-support (3.2.2)
+      rspec-support (~> 3.3.0)
+    rspec-support (3.3.0)
     rubocop (0.31.0)
       astrolabe (~> 1.3)
       parser (>= 2.2.2.1, < 3.0)
@@ -86,10 +86,10 @@ GEM
       ruby-progressbar (~> 1.4)
     ruby-progressbar (1.7.5)
     safe_yaml (1.0.4)
-    sinatra (1.4.5)
+    sinatra (1.4.6)
       rack (~> 1.4)
       rack-protection (~> 1.4)
-      tilt (~> 1.3, >= 1.3.4)
+      tilt (>= 1.3, < 3)
     slack-api (1.1.6)
       faraday (>= 0.7, < 0.10)
       faraday_middleware (~> 0.8)
@@ -97,14 +97,14 @@ GEM
       multi_json (~> 1.0, >= 1.0.3)
     thor (0.19.1)
     thread_safe (0.3.5)
-    tilt (1.4.1)
+    tilt (2.0.1)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
     vcr (2.9.3)
     webmock (1.21.0)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
-    websocket-driver (0.5.4)
+    websocket-driver (0.6.0)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.2)
 

slack-mathbot.rb

@@ -1,6 +1,5 @@
 require 'slack-ruby-bot'
 require 'slack-mathbot/version'
 require 'slack-mathbot/about'
-require 'slack-mathbot/hooks/message'
 require 'slack-mathbot/commands'
 require 'slack-mathbot/app'

slack-mathbot/commands/calculate.rb

@@ -1,6 +1,8 @@
 module SlackMathbot
   module Commands
     class Calculate < SlackRubyBot::Commands::Base
+      operator '='
+
       def self.call(data, _command, arguments)
         result = Dentaku::Calculator.new.evaluate(arguments.join)
         result = result.to_s if result

slack-mathbot/hooks/message.rb

@@ -1,19 +0,0 @@
-module SlackRubyBot
-  module Hooks
-    module Message
-      private
-
-      # TODO: remove monkey-patch
-      def parse_command(text)
-        return unless text
-        text = '= ' + text[1..text.length] if text[0] == '='
-        parts = text.split.reject(&:blank?)
-        if parts && parts[0] == '='
-          parts[0] = SlackRubyBot.config.user
-          parts.insert 1, 'calculate'
-        end
-        [parts.first.downcase, parts[1].try(:downcase), parts[2..parts.length]] if parts && parts.any?
-      end
-    end
-  end
-end