Hooks - Add :begin and :end hook to all guard actions via Guard.supervised_task

lib/guard.rb

@@ -6,6 +6,7 @@ module Guard
   autoload :Listener,   'guard/listener'
   autoload :Watcher,    'guard/watcher'
   autoload :Notifier,   'guard/notifier'
+  autoload :Hook,       'guard/hook'
 
   class << self
     attr_accessor :options, :guards, :listener
@@ -57,7 +58,9 @@ module Guard
     # Let a guard execute its task but
     # fire it if his work leads to a system failure
     def supervised_task(guard, task_to_supervise, *args)
+      guard.hook "#{task_to_supervise.to_s}_begin"
       guard.send(task_to_supervise, *args)
+      guard.hook "#{task_to_supervise.to_s}_end"
     rescue Exception
       UI.error("#{guard.class.name} guard failed to achieve its <#{task_to_supervise.to_s}> command: #{$!}")
       ::Guard.guards.delete guard

lib/guard/hook.rb

@@ -36,7 +36,7 @@ module Guard
       end
 
       def has_callback?(listener, guard_class, event)
-        listeners(guard_class, event).include? listener
+        callbacks[[guard_class, event]].include? listener
       end
 
       def notify(guard_class, event)
@@ -48,14 +48,6 @@ module Guard
       def reset!
         @callbacks = nil
       end
-
-      private
-
-      def listeners(guard_class, event)
-        callbacks[[guard_class, event]].inject([]) do |all, arr|
-          all << arr
-        end
-      end
     end
   end
 end