--- migemo.rb.in.orig	2003-05-28 21:00:52.000000000 +0900
+++ migemo.rb.in	2011-08-22 02:23:18.000000000 +0900
@@ -14,7 +14,6 @@
 require 'migemo-dict'
 require 'migemo-regex'
 require 'romkan'
-require 'jcode'
 include MigemoRegex
 
 class String
@@ -24,7 +23,7 @@
   end
 
   def quotemeta
-    self.gsub(/([^ \w])/, '\\\\\\1')
+    self.gsub(/([[:punct:]])/, '\\\\\\1')
   end
 
   def first