Merge pull request #17 from keimlink/ack-python-2-compatibility

Fixed Ubuntu version check

Author: leonid-shevtsov

searchengines/ack.py

@@ -22,7 +22,7 @@ class Ack (base.Base):
     def __init__(self, settings):
         base.Base.__init__(self, settings)
         # Ubuntu's ack from repos is called ack-grep by default
-        if 'Ubuntu' in os.uname().version and self.path_to_executable=='ack' and os.system('which ack-grep')==0:
+        if 'Ubuntu' in os.uname()[3] and self.path_to_executable=='ack' and os.system('which ack-grep')==0:
             self.path_to_executable = 'ack-grep'
 
 engine_class = Ack