Monkey patch to support operator =.

Gemfile

@@ -2,7 +2,7 @@ source 'http://rubygems.org'
 
 ruby '2.1.6'
 
-gem 'slack-ruby-bot'
+gem 'slack-ruby-bot', github: 'dblock/slack-ruby-bot'
 gem 'puma'
 gem 'sinatra'
 gem 'dentaku'

Gemfile.lock

@@ -1,3 +1,13 @@
+GIT
+  remote: git://github.com/dblock/slack-ruby-bot.git
+  revision: fa17932abf5ad0c5d25c652f4a46cec1d93a99d4
+  specs:
+    slack-ruby-bot (0.2.0)
+      activesupport
+      giphy (~> 2.0.2)
+      hashie
+      slack-api (~> 1.1.6)
+
 GEM
   remote: http://rubygems.org/
   specs:
@@ -85,11 +95,6 @@ GEM
       faraday_middleware (~> 0.8)
       faye-websocket (~> 0.9.2)
       multi_json (~> 1.0, >= 1.0.3)
-    slack-ruby-bot (0.1.0)
-      activesupport
-      giphy (~> 2.0.2)
-      hashie
-      slack-api (~> 1.1.6)
     thor (0.19.1)
     thread_safe (0.3.5)
     tilt (1.4.1)
@@ -115,6 +120,6 @@ DEPENDENCIES
   rspec
   rubocop (= 0.31.0)
   sinatra
-  slack-ruby-bot
+  slack-ruby-bot!
   vcr
   webmock

slack-mathbot.rb

@@ -1,5 +1,6 @@
 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/hooks/message.rb

@@ -0,0 +1,19 @@
+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