Merge branch '2.2.3' into 3.0.0-wip

Conflicts:
	Makefile
	README.md
	component.json
	docs/assets/css/bootstrap-responsive.css
	docs/assets/css/bootstrap.css
	docs/assets/js/bootstrap-affix.js
	docs/assets/js/bootstrap-alert.js
	docs/assets/js/bootstrap-button.js
	docs/assets/js/bootstrap-carousel.js
	docs/assets/js/bootstrap-collapse.js
	docs/assets/js/bootstrap-dropdown.js
	docs/assets/js/bootstrap-modal.js
	docs/assets/js/bootstrap-popover.js
	docs/assets/js/bootstrap-scrollspy.js
	docs/assets/js/bootstrap-tab.js
	docs/assets/js/bootstrap-tooltip.js
	docs/assets/js/bootstrap-transition.js
	docs/assets/js/bootstrap-typeahead.js
	docs/assets/js/bootstrap.js
	docs/assets/js/bootstrap.min.js
	docs/index.html
	docs/templates/pages/base-css.mustache
	docs/templates/pages/index.mustache
	docs/templates/pages/javascript.mustache
	js/bootstrap-affix.js
	js/bootstrap-alert.js
	js/bootstrap-button.js
	js/bootstrap-carousel.js
	js/bootstrap-collapse.js
	js/bootstrap-dropdown.js
	js/bootstrap-modal.js
	js/bootstrap-popover.js
	js/bootstrap-scrollspy.js
	js/bootstrap-tab.js
	js/bootstrap-tooltip.js
	js/bootstrap-transition.js
	js/bootstrap-typeahead.js
	less/bootstrap.less
	less/responsive.less
	less/type.less
	package.json

1 files changed, 3 insertions, 2 deletions

diff --git a/js/bootstrap-dropdown.js b/js/bootstrap-dropdown.js
index 65fc3ea86a..93d645970d 100644
--- a/js/bootstrap-dropdown.js
+++ b/js/bootstrap-dropdown.js
@@ -115,8 +115,9 @@
       selector = selector && /#/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7
     }
 
-    $parent = $(selector)
-    $parent.length || ($parent = $this.parent())
+    $parent = selector && $(selector)
+
+    if (!$parent || !$parent.length) $parent = $this.parent()
 
     return $parent
   }