From a7a256956d8c198bfc6f521ae53f212802518fa0 Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis@37signals.com>
Date: Thu, 31 Jan 2008 04:44:50 +0000
Subject: [PATCH] Fail gracefully when double-colons are used to delimit
 namespaces (closes #10472)

git-svn-id: http://svn.rubyonrails.org/rails/tools/capistrano@8758 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
 CHANGELOG                                  | 2 ++
 lib/capistrano/configuration/namespaces.rb | 3 ++-
 test/configuration/namespace_dsl_test.rb   | 8 ++++++++
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG b/CHANGELOG
index 7052b011..76ef9933 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,7 @@
 *SVN*
 
+* Fail gracefully when double-colons are used to delimit namespaces [richie]
+
 * Add support for :git_enable_submodules variable, to enable submodules with the git SCM [halorgium]
 
 * If subversion asks for a password, prompt as a last resort [Jamis Buck]
diff --git a/lib/capistrano/configuration/namespaces.rb b/lib/capistrano/configuration/namespaces.rb
index 08872349..12dc36fa 100644
--- a/lib/capistrano/configuration/namespaces.rb
+++ b/lib/capistrano/configuration/namespaces.rb
@@ -116,7 +116,8 @@ module Capistrano
 
         ns = self
         until parts.empty?
-          ns = ns.namespaces[parts.shift.to_sym]
+          next_part = parts.shift
+          ns = next_part.empty? ? nil : ns.namespaces[next_part.to_sym]
           return nil if ns.nil?
         end
 
diff --git a/test/configuration/namespace_dsl_test.rb b/test/configuration/namespace_dsl_test.rb
index ae822a1e..26f526c3 100644
--- a/test/configuration/namespace_dsl_test.rb
+++ b/test/configuration/namespace_dsl_test.rb
@@ -294,4 +294,12 @@ class ConfigurationNamespacesDSLTest < Test::Unit::TestCase
     @config.namespace(:outer) { namespace(:middle) { namespace(:inner) {} } }
     assert_equal @config, @config.namespaces[:outer].namespaces[:middle].namespaces[:inner].top
   end
+
+  def test_find_task_should_return_nil_when_empty_inner_task
+    @config.namespace :outer do
+      namespace :inner do
+      end
+    end
+    assert_nil @config.find_task("outer::inner")
+  end
 end
\ No newline at end of file