cli.get() supports fallback values

@@ -112,6 +112,7 @@ Last, all the casper test suites have been upgraded to use the new testing featu
 - Added [`Tester#skip`](http://docs.casperjs.org/en/latest/modules/tester.html#skip) method
 - Added [`Casper#eachThen()`](http://docs.casperjs.org/en/latest/modules/casper.html#eachThen)
 - `cli`: Now dropping an arg or an option will be reflected in their *raw* equivalent
+- `cli.get()` now supports fallback values
 
 2013-02-08, v1.0.2
 ------------------

@@ -126,8 +126,8 @@ var Casper = function Casper(options) {
     this.options = utils.mergeObjects(this.defaults, options);
     // factories
     this.cli = phantom.casperArgs;
-    this.options.logLevel = this.cli.get('log-level') || this.options.logLevel;
-    this.options.verbose = this.cli.get('direct') || this.options.verbose;
+    this.options.logLevel = this.cli.get('log-level', this.options.logLevel);
+    this.options.verbose = this.cli.get('direct', this.options.verbose);
     this.colorizer = this.getColorizer();
     this.mouse = mouse.create(this);
     this.popups = pagestack.create();

@@ -83,20 +83,20 @@ exports.parse = function parse(phantomArgs) {
         has: function has(what) {
             if (utils.isNumber(what)) {
                 return what in this.args;
-            } else if (utils.isString(what)) {
+            }
+            if (utils.isString(what)) {
                 return what in this.options;
-            } else {
-                throw new CasperError("Unsupported cli arg tester " + typeof what);
             }
+            throw new CasperError("Unsupported cli arg tester " + typeof what);
         },
-        get: function get(what) {
+        get: function get(what, def) {
             if (utils.isNumber(what)) {
-                return this.args[what];
-            } else if (utils.isString(what)) {
-                return this.options[what];
-            } else {
-                throw new CasperError("Unsupported cli arg getter " + typeof what);
+                return what in this.args ? this.args[what] : def;
+            }
+            if (utils.isString(what)) {
+                return what in this.options ? this.options[what] : def;
             }
+            throw new CasperError("Unsupported cli arg getter " + typeof what);
         }
     };
     phantomArgs.forEach(function _forEach(arg) {

@@ -147,3 +147,12 @@ casper.test.begin('parsing commands containing args and options', 34, function(t
 
     test.done();
 });
+
+casper.test.begin('default values', 2, function(test) {
+    var parsed = cli.parse(['foo', '--bar']);
+    test.assertEquals(parsed.get(42, 'boz'), 'boz',
+        'get() can return a default arg value');
+    test.assertEquals(parsed.get('--zorg', 'boz'), 'boz',
+        'get() can return a default option value');
+    test.done();
+});