From c0166da47a545859da7f098cb3377a412f7bf99a Mon Sep 17 00:00:00 2001
From: kuboshizuma <forothers.295@gmail.com>
Date: Wed, 25 Nov 2015 11:05:30 +0900
Subject: [PATCH] Fix RegexpError when parsing command

---
 lib/slack-ruby-bot/commands/base.rb             |  5 +++--
 .../commands/commands_regexp_escape_spec.rb     | 17 +++++++++++++++++
 2 files changed, 20 insertions(+), 2 deletions(-)
 create mode 100644 spec/slack-ruby-bot/commands/commands_regexp_escape_spec.rb

diff --git a/lib/slack-ruby-bot/commands/base.rb b/lib/slack-ruby-bot/commands/base.rb
index 47af56b..a08b4b7 100644
--- a/lib/slack-ruby-bot/commands/base.rb
+++ b/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
 
diff --git a/spec/slack-ruby-bot/commands/commands_regexp_escape_spec.rb b/spec/slack-ruby-bot/commands/commands_regexp_escape_spec.rb
new file mode 100644
index 0000000..10f216f
--- /dev/null
+++ b/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