Ticket #193 - alias_task preserve description

lib/capistrano/configuration/alias_task.rb

@@ -12,7 +12,10 @@ module Capistrano
 
         task = find_task(old_name) or raise NoSuchTaskError, "the task `#{old_name}' does not exist"
 
-        task(new_name, task.options, &task.body)
+        options = {}
+        options[:desc] = task.description
+
+        task(new_name, options, &task.body)
       end
     end
   end

test/configuration/alias_task_test.rb

@@ -37,6 +37,16 @@ class AliasTaskTest < Test::Unit::TestCase
     assert_equal 42, @config.find_and_execute_task('new_foo')
   end
 
+  def test_aliased_task_should_preserve_description
+    @config.task(:foo, :desc => "the Ultimate Question of Life, the Universe, and Everything" ) { 42 }
+    @config.alias_task 'new_foo', 'foo'
+
+    task = @config.find_task('foo')
+    new_task = @config.find_task('new_foo')
+
+    assert_equal task.description, new_task.description
+  end
+
   def test_raise_exception_when_task_doesnt_exist
     assert_raises(Capistrano::NoSuchTaskError) { @config.alias_task 'non_existant_task', 'fail_miserably' }
   end