From 2fd1c7565bdc2c631e66fc83c54b8698edd4d4b2 Mon Sep 17 00:00:00 2001
From: okonomiyaki3000 <okonomiyaki3000@gmail.com>
Date: Fri, 16 Dec 2011 15:05:22 +0900
Subject: [PATCH] Problem: It seems that, under circumstances I do not
 understand, some NaN value gets passed to getState and then on to
 $tokenizeRows which causes empty array to be returned. getState then tries to
 access element 0 of this array and ugly things start to happen.

Solution: never return empty array from $tokenizeRows
---
 lib/ace/background_tokenizer.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/ace/background_tokenizer.js b/lib/ace/background_tokenizer.js
index 0ee8990c..e5fe73bd 100644
--- a/lib/ace/background_tokenizer.js
+++ b/lib/ace/background_tokenizer.js
@@ -130,8 +130,8 @@ var BackgroundTokenizer = function(tokenizer, editor) {
     };
 
     this.$tokenizeRows = function(firstRow, lastRow) {
-        if (!this.doc)
-            return [];
+        if (!this.doc || isNaN(firstRow) || isNaN(lastRow))
+            return [{'state':'start','tokens':[]}];
             
         var rows = [];