From 6b660009adc122a780550f933d8fa966c330bfaf Mon Sep 17 00:00:00 2001
From: c-spencer <cs560@cam.ac.uk>
Date: Thu, 19 May 2011 13:07:42 +0100
Subject: [PATCH] Simplify backreference adjustment

---
 lib/ace/tokenizer.js | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/lib/ace/tokenizer.js b/lib/ace/tokenizer.js
index cfee8199..6d03388a 100644
--- a/lib/ace/tokenizer.js
+++ b/lib/ace/tokenizer.js
@@ -53,12 +53,9 @@ var Tokenizer = function(rules) {
             // Count number of matching groups. 2 extra groups from the full match
             // And the catch-all on the end (used to force a match);
             var matchcount = new RegExp("(?:(" + state[i].regex + ")|(.))").exec("a").length - 2;
-            
-            // Get how long references can be, depending on how many capturing groups have been found so far.
-            var reflength = ("" + (matchTotal + matchcount.length - 2)).length;
-            
+        
             // Replace any backreferences and offset appropriately.
-            var adjustedregex = state[i].regex.replace(new RegExp("\\\\([0-9]{1," + reflength + "})", "g"), function (match, digit) {
+            var adjustedregex = state[i].regex.replace(/\\([0-9]+)/g, function (match, digit) {
                 return "\\" + (parseInt(digit, 10) + matchTotal + 1);
             });