Don't let a task trigger itself when used as the source for an "on" h…

…ook (closes #9356)

git-svn-id: http://svn.rubyonrails.org/rails/tools/capistrano@7381 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Don't let a task trigger itself when used as the source for an "on" hook [Jamis Buck]
+
 * Avoid using the --password switch with subversion for security purposes [sentinel]
 
 * Add version_dir, current_dir, and shared_dir variables for naming the directories used in deployment [drinkingbird]

lib/capistrano/callback.rb

@@ -37,5 +37,9 @@ def initialize(config, source, options={})
     def call
       config.find_and_execute_task(source)
     end
+
+    def applies_to?(task)
+      super && (task.nil? || task.fully_qualified_name != source.to_s)
+    end
   end
 end