From b59155af7dda49e18f64a9b76dfcd350fb4e6198 Mon Sep 17 00:00:00 2001
From: Julian Viereck <julian.viereck@gmail.com>
Date: Tue, 11 Jan 2011 09:20:57 +0100
Subject: [PATCH] Fix bug in Document.. If there are no lines after trimming
 off the spaces/tabs from the end return directly.

---
 lib/ace/document.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/ace/document.js b/lib/ace/document.js
index 2138f234..22b5cb4e 100644
--- a/lib/ace/document.js
+++ b/lib/ace/document.js
@@ -879,6 +879,12 @@ var Document = function(text, mode) {
         }
         tabLine.splice(toRemove + 1);
 
+        // Shortcut: If there are no more tabLines, then there is nothing to
+        // split up.
+        if (tabLine.length == 0) {
+            return [];
+        }
+
         // Remove spaces from the last tabLine to prevent splits only for
         // whitespaces as well.
         // E.g: "foo \tbar    " -> "foo \tbar"