refs #482: sync with master

@@ -28,11 +28,17 @@
  *
  */
 
-/*global console, phantom, require:true*/
+/*global process, console, phantom, require:true*/
 /*jshint maxstatements:33, maxcomplexity:10*/
 
+// node check
+if ('process' in this && process.title === "node") {
+    console.error('CasperJS cannot be executed within a nodejs environment');
+    process.exit(1);
+}
+
 // phantom check
-if (!phantom) {
+if (!('phantom' in this)) {
     console.error('CasperJS needs to be executed in a PhantomJS environment http://phantomjs.org/');
 }
 

@@ -667,7 +667,7 @@ Casper.prototype.evaluate = function evaluate(fn, context) {
     this.injectClientUtils();
     // function context
     if (arguments.length === 1) {
-        return this.page.evaluate(fn);
+        return utils.clone(this.page.evaluate(fn));
     } else if (arguments.length === 2) {
         // check for closure signature if it matches context
         if (utils.isObject(context) && eval(fn).length === Object.keys(context).length) {
@@ -679,7 +679,7 @@ Casper.prototype.evaluate = function evaluate(fn, context) {
         // phantomjs-style signature
         context = [].slice.call(arguments).slice(1);
     }
-    return this.page.evaluate.apply(this.page, [fn].concat(context));
+    return utils.clone(this.page.evaluate.apply(this.page, [fn].concat(context)));
 };
 
 /**

@@ -33,6 +33,7 @@
 var require = patchRequire(require);
 var fs = require('fs');
 var utils = require('utils');
+var env = require('system').env;
 
 exports.create = function create(type) {
     "use strict";
@@ -79,7 +80,7 @@ var Colorizer = function Colorizer() {
      * @return  String
      */
     this.colorize = function colorize(text, styleName, pad) {
-        if (fs.isWindows() || !(styleName in styles)) {
+        if ((fs.isWindows() && !env['ANSICON']) || !(styleName in styles)) {
             return text;
         }
         return this.format(text, styles[styleName], pad);
@@ -93,7 +94,7 @@ var Colorizer = function Colorizer() {
      * @return String
      */
     this.format = function format(text, style, pad) {
-        if (fs.isWindows() || !utils.isObject(style)) {
+        if ((fs.isWindows() && !env['ANSICON']) || !utils.isObject(style)) {
             return text;
         }
         var codes = [];

@@ -40,7 +40,7 @@ casper.echo("Let the match begin between \"" + (terms.join('", "')) + "\"!");
 casper.start("http://google.fr/");
 
 casper.each(terms, function(casper, term, i) {
-    this.echo('Fecthing score for ' + term);
+    this.echo('Fetching score for ' + term);
     this.then(function() {
         this.fill('form[action="/search"]', {q: term}, true);
     });

@@ -90,3 +90,23 @@ casper.test.begin('thenEvaluate() tests', 2, function(test) {
         test.done();
     });
 });
+
+// https://github.com/n1k0/casperjs/issues/489
+// https://groups.google.com/forum/?fromgroups=#!topic/casperjs/95IgDMFnEKM
+casper.test.begin("evaluate() returns a value which can be altered", 1, function(test) {
+    var list;
+
+    casper.start().then(function() {
+        list = this.evaluate(function() {
+            return [{a: 1}, {b: 2}];
+        });
+        var first = list[0];
+        first.a = 42;
+        test.assertEquals(list, [{a: 42}, {b: 2}],
+            'evaluate() returns a cloned value which can be altered');
+    });
+
+    casper.run(function() {
+        test.done();
+    });
+});