From 8227e8795b309b46e0f2ef998d7238198eb07425 Mon Sep 17 00:00:00 2001
From: Justin Lau <justin@tclau.com>
Date: Sun, 5 May 2013 22:08:13 +0800
Subject: [PATCH 1/4] Added scenario in test case where properties shouldn't be
 accessed with dotted syntax even with screw_ie8 option. Signed-off-by: Justin
 Lau <justin@tclau.com>

---
 test/compress/properties.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/compress/properties.js b/test/compress/properties.js
index 9b066ec9..118bc4c2 100644
--- a/test/compress/properties.js
+++ b/test/compress/properties.js
@@ -17,10 +17,12 @@ dot_properties: {
     input: {
         a["foo"] = "bar";
         a["if"] = "if";
+        a["*"] = "asterisk";
     }
     expect: {
         a.foo = "bar";
         a["if"] = "if";
+        a["*"] = "asterisk";
     }
 }
 
@@ -32,9 +34,11 @@ dot_properties_es5: {
     input: {
         a["foo"] = "bar";
         a["if"] = "if";
+        a["*"] = "asterisk";
     }
     expect: {
         a.foo = "bar";
         a.if = "if";
+        a["*"] = "asterisk";
     }
 }

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 2/4] 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

From fcd544cc106bbd04ca8003046fa76154cdb4046e Mon Sep 17 00:00:00 2001
From: Justin Lau <justin@tclau.com>
Date: Mon, 6 May 2013 01:26:33 +0800
Subject: [PATCH 3/4] Added test scenario with unicode in properties name.
 Signed-off-by: Justin Lau <justin@tclau.com>

---
 test/compress/properties.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/compress/properties.js b/test/compress/properties.js
index 118bc4c2..d52680c2 100644
--- a/test/compress/properties.js
+++ b/test/compress/properties.js
@@ -18,11 +18,13 @@ dot_properties: {
         a["foo"] = "bar";
         a["if"] = "if";
         a["*"] = "asterisk";
+        a["\u0EB3"] = "unicode";
     }
     expect: {
         a.foo = "bar";
         a["if"] = "if";
         a["*"] = "asterisk";
+        a.\u0EB3 = "unicode";
     }
 }
 
@@ -35,10 +37,12 @@ dot_properties_es5: {
         a["foo"] = "bar";
         a["if"] = "if";
         a["*"] = "asterisk";
+        a["\u0EB3"] = "unicode";
     }
     expect: {
         a.foo = "bar";
         a.if = "if";
         a["*"] = "asterisk";
+        a.\u0EB3 = "unicode";
     }
 }

From adeb7b2fe692c52dd7513409bea2e9b5420ccee3 Mon Sep 17 00:00:00 2001
From: Justin Lau <justin@tclau.com>
Date: Mon, 6 May 2013 02:45:41 +0800
Subject: [PATCH 4/4] Fixed dot properties not optimizing unicode identifiers.
 Signed-off-by: Justin Lau <justin@tclau.com>

---
 lib/compress.js | 4 ++--
 lib/parse.js    | 8 ++++++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/compress.js b/lib/compress.js
index 623fe45e..992d78f8 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1962,8 +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") && /^[a-z_$][a-z0-9_$]*$/i.test(prop))) {
+            if (compressor.option("screw_ie8") && RESERVED_WORDS(prop)
+                || !(RESERVED_WORDS(prop)) && is_identifier_string(prop)) {
                 return make_node(AST_Dot, self, {
                     expression : self.expression,
                     property   : prop
diff --git a/lib/parse.js b/lib/parse.js
index da39b5b1..b5f605a6 100644
--- a/lib/parse.js
+++ b/lib/parse.js
@@ -167,6 +167,14 @@ function is_identifier_char(ch) {
     ;
 };
 
+function is_identifier_string(string){
+    for(var i in string) {
+        if(!is_identifier_char(string[i]))
+            return false;
+    }
+    return true;
+}
+
 function parse_js_number(num) {
     if (RE_HEX_NUMBER.test(num)) {
         return parseInt(num.substr(2), 16);