From fa3300f31474af5c566da96ff8db78a2eafa49e3 Mon Sep 17 00:00:00 2001
From: colorhook <colorhook@gmail.com>
Date: Mon, 16 Dec 2013 15:53:43 +0800
Subject: [PATCH] bugfix #242

---
 lib/scope.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/scope.js b/lib/scope.js
index 950128d4..de0bd965 100644
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -249,6 +249,11 @@ AST_Scope.DEFMETHOD("next_mangled", function(options){
         // we must ensure that the mangled name does not shadow a name
         // from some parent scope that is referenced in this or in
         // inner scopes.
+
+        //bugfix: https://github.com/mishoo/UglifyJS2/issues/242
+        if(options.except.indexOf(m) !== -1){
+            continue;
+        }
         for (var i = ext.length; --i >= 0;) {
             var sym = ext[i];
             var name = sym.mangled_name || (sym.unmangleable(options) && sym.name);
-- 
2.34.1