fixes #259: don't unnecessarily quote object properties when --screw-ie8

3 files changed, 12 insertions, 12 deletions

diff --git a/bin/uglifyjs b/bin/uglifyjs
index cad29ee0..7a4f6224 100755
--- a/bin/uglifyjs
+++ b/bin/uglifyjs
@@ -129,11 +129,6 @@ if (ARGS.d) {
     if (COMPRESS) COMPRESS.global_defs = getOptions("d");
 }
 
-if (ARGS.screw_ie8) {
-    if (COMPRESS) COMPRESS.screw_ie8 = true;
-    if (MANGLE) MANGLE.screw_ie8 = true;
-}
-
 if (ARGS.r) {
     if (MANGLE) MANGLE.except = ARGS.r.replace(/^\s+|\s+$/g).split(/\s*,+\s*/);
 }
@@ -142,6 +137,12 @@ var OUTPUT_OPTIONS = {
     beautify: BEAUTIFY ? true : false
 };
 
+if (ARGS.screw_ie8) {
+    if (COMPRESS) COMPRESS.screw_ie8 = true;
+    if (MANGLE) MANGLE.screw_ie8 = true;
+    OUTPUT_OPTIONS.screw_ie8 = true;
+}
+
 if (BEAUTIFY)
     UglifyJS.merge(OUTPUT_OPTIONS, BEAUTIFY);
 
diff --git a/lib/compress.js b/lib/compress.js
index 3bf9f672..8dfbc72b 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -2005,8 +2005,7 @@ merge(Compressor.prototype, {
         var prop = self.property;
         if (prop instanceof AST_String && compressor.option("properties")) {
             prop = prop.getValue();
-            if ((compressor.option("screw_ie8") && RESERVED_WORDS(prop))
-                || (!(RESERVED_WORDS(prop)) && is_identifier_string(prop))) {
+            if (RESERVED_WORDS(prop) ? compressor.option("screw_ie8") : is_identifier_string(prop)) {
                 return make_node(AST_Dot, self, {
                     expression : self.expression,
                     property   : prop
diff --git a/lib/output.js b/lib/output.js
index 90589a2d..6d0dac5a 100644
--- a/lib/output.js
+++ b/lib/output.js
@@ -54,13 +54,13 @@ function OutputStream(options) {
         inline_script : false,
         width         : 80,
         max_line_len  : 32000,
-        ie_proof      : true,
         beautify      : false,
         source_map    : null,
         bracketize    : false,
         semicolons    : true,
         comments      : false,
         preserve_line : false,
+        screw_ie8     : false,
         negate_iife   : !(options && options.beautify),
     }, true);
 
@@ -761,7 +761,7 @@ function OutputStream(options) {
         if (!self.body)
             return output.force_semicolon();
         if (self.body instanceof AST_Do
-            && output.option("ie_proof")) {
+            && !output.option("screw_ie8")) {
             // https://github.com/mishoo/UglifyJS/issues/#issue/57 IE
             // croaks with "syntax error" on code like this: if (foo)
             // do ... while(cond); else ...  we need block brackets
@@ -1048,10 +1048,10 @@ function OutputStream(options) {
                     && +key + "" == key)
                    && parseFloat(key) >= 0) {
             output.print(make_num(key));
-        } else if (!is_identifier(key)) {
-            output.print_string(key);
-        } else {
+        } else if (RESERVED_WORDS(key) ? output.option("screw_ie8") : is_identifier_string(key)) {
             output.print_name(key);
+        } else {
+            output.print_string(key);
         }
         output.colon();
         self.value.print(output);