From 4502ec04d349cffdb5bdf4cf616d5cf9cb569b23 Mon Sep 17 00:00:00 2001
From: Justin Palmer <justin@github.com>
Date: Mon, 11 Feb 2013 16:49:28 -0800
Subject: [PATCH] only check for duplicates when dragging to a different panel

---
 src/packages/tabs/lib/tab-view.coffee | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/packages/tabs/lib/tab-view.coffee b/src/packages/tabs/lib/tab-view.coffee
index fcb3a9511..6b34460e7 100644
--- a/src/packages/tabs/lib/tab-view.coffee
+++ b/src/packages/tabs/lib/tab-view.coffee
@@ -82,7 +82,9 @@ class TabView extends SortableList
     droppedNearTab = @getSortableElement(event)
     draggedTab     = fromPane.find(".#{TabView.viewClass()} .sortable:eq(#{previousDraggedTabIndex})")
 
-    return if draggedTab[0] is droppedNearTab[0] or @containsTab(draggedTab)
+    return if draggedTab.is(droppedNearTab)
+    if fromPaneIndex != toPaneIndex
+      return if toPane.find('.sortable-list').view().containsTab(draggedTab)
 
     draggedTab.remove()
     draggedTab.insertAfter(droppedNearTab)