Fix RegexpError when parsing command.

.rubocop_todo.yml

@@ -1,5 +1,5 @@
 # This configuration was generated by `rubocop --auto-gen-config`
-# on 2015-11-20 10:29:04 -0700 using RuboCop version 0.32.1.
+# on 2015-11-26 14:43:46 +0900 using RuboCop version 0.32.1.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -17,11 +17,16 @@ Lint/UselessAccessModifier:
 Metrics/AbcSize:
   Max: 27
 
+# Offense count: 1
+# Configuration parameters: CountComments.
+Metrics/ClassLength:
+  Max: 101
+
 # Offense count: 3
 Metrics/CyclomaticComplexity:
   Max: 8
 
-# Offense count: 94
+# Offense count: 96
 # Configuration parameters: AllowURI, URISchemes.
 Metrics/LineLength:
   Max: 145

CHANGELOG.md

@@ -6,6 +6,7 @@
 * Fix: explicitly require 'giphy' - [@dblock](https://github.com/dblock).
 * Fix: undefined method `stop` for `Slack::RealTime::Client` - [@dblock](https://github.com/dblock).
 * [#29](https://github.com/dblock/slack-ruby-bot/pull/29): Fixed bot failing to correctly respond to unknown commands when queried with format `@botname` - [@crayment](https://github.com/crayment).
+* [#30](https://github.com/dblock/slack-ruby-bot/pull/30): Fix RegexpError when parsing command - [@kuboshizuma](https://github.com/kuboshizuma).
 * Your contribution here.
 
 ### 0.4.5 (10/29/2015)

lib/slack-ruby-bot/commands/base.rb

@@ -47,8 +47,9 @@ def self.operator(*values, &block)
 
       def self.command(*values, &block)
         values.each do |value|
-          match Regexp.new("^(?<bot>[\\w[:punct:]@<>]*)[\\s]+(?<command>#{value})$", Regexp::IGNORECASE), &block
-          match Regexp.new("^(?<bot>[\\w[:punct:]@<>]*)[\\s]+(?<command>#{value})[\\s]+(?<expression>.*)$", Regexp::IGNORECASE), &block
+          escaped = Regexp.escape(value)
+          match Regexp.new("^(?<bot>[\\w[:punct:]@<>]*)[\\s]+(?<command>#{escaped})$", Regexp::IGNORECASE), &block
+          match Regexp.new("^(?<bot>[\\w[:punct:]@<>]*)[\\s]+(?<command>#{escaped})[\\s]+(?<expression>.*)$", Regexp::IGNORECASE), &block
         end
       end
 

spec/slack-ruby-bot/commands/commands_regexp_escape_spec.rb

@@ -0,0 +1,17 @@
+require 'spec_helper'
+
+describe SlackRubyBot::Commands do
+  let! :command do
+    Class.new(SlackRubyBot::Commands::Base) do
+      command '(' do |client, data, match|
+        send_message client, data.channel, "#{match[:command]}: #{match[:expression]}"
+      end
+    end
+  end
+  def app
+    SlackRubyBot::App.new
+  end
+  it 'does not return error' do
+    expect(message: "#{SlackRubyBot.config.user} ( /").to respond_with_slack_message('(: /')
+  end
+end