From 0f8bae950ea179694c40844990eec183fe3e2648 Mon Sep 17 00:00:00 2001
From: Jay Phelps <jay@jayphelps.com>
Date: Mon, 16 Jul 2012 16:35:35 -0700
Subject: [PATCH] Ensure running in IE if concated with other files that enable
 conditional compilation /*@cc_on @/`.

Former-commit-id: cf2d9c01ce92b8b85149116d48145bc4342471a4
---
 lodash.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lodash.js b/lodash.js
index af689d3aa..a18cb94a2 100644
--- a/lodash.js
+++ b/lodash.js
@@ -141,8 +141,10 @@
 
   /** Detect if sourceURL syntax is usable without erroring */
   try {
-    // Adobe's and Narwhal's JS engines will error
-    var useSourceURL = (Function('//@')(), true);
+    // Adobe's and Narwhal's JS engines will error. IE 8/9/etc also evaluate
+    // @ symbols as part of a non-standard conditional include system, so it
+    // parses /a/a as a malformed regular expression, so we know to exclude them.
+    var useSourceURL = (Function('//@/a/a')(), true);
   } catch(e){ }
 
   /**