Index: /lang/ruby/chokan/trunk/plugins/google_calc.rb
===================================================================
--- /lang/ruby/chokan/trunk/plugins/google_calc.rb (revision 5415)
+++ /lang/ruby/chokan/trunk/plugins/google_calc.rb (revision 5696)
@@ -28,5 +28,5 @@
 
 		Net::HTTP.start('www.google.co.jp', 80) do |http|
-			uri = "/search?q=#{URI.encode(syntax, /.*/n)}&oe=utf-8"
+			uri = "/search?q=#{URI.encode(syntax, /[^-.!~*'()\w]/n)}&oe=utf-8&num=1"
 			log uri
 			response = http.get(uri)