From 1e3bc0caa0a8ad8c3bcab07d539ee153ea8e96b3 Mon Sep 17 00:00:00 2001
From: Justin Lau <justin@tclau.com>
Date: Sun, 5 May 2013 22:27:43 +0800
Subject: [PATCH] Fixed dot property issue with invlid identifier names.
 Signed-off-by: Justin Lau <justin@tclau.com>

---
 lib/compress.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/compress.js b/lib/compress.js
index ebd3dd7a..623fe45e 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1962,7 +1962,8 @@ merge(Compressor.prototype, {
         var prop = self.property;
         if (prop instanceof AST_String && compressor.option("properties")) {
             prop = prop.getValue();
-            if (is_identifier(prop) || compressor.option("screw_ie8")) {
+            if (is_identifier(prop)
+                || (compressor.option("screw_ie8") && /^[a-z_$][a-z0-9_$]*$/i.test(prop))) {
                 return make_node(AST_Dot, self, {
                     expression : self.expression,
                     property   : prop
-- 
2.34.1