fixed #547 - emit error event when step and complete callbacks fail

@@ -66,6 +66,21 @@ Emitted when a :index:`screenshot` image has been captured.
 
 Emitted when the ``Casper.click()`` method has been called.
 
+``complete.error``
+~~~~~~~~~~~~~~~~~~
+
+**Arguments:** ``error``
+
+.. versionadded:: 1.1
+
+Emitted when a complete callback has errored.
+
+By default, CasperJS doesn't listen to this event, you have to declare your own listeners by hand::
+
+    casper.on('complete.error', function(err) {
+        this.die("Complete callback has failed: " + err);
+    });
+
 ``die``
 ~~~~~~~
 
@@ -91,7 +106,7 @@ Emitted when a file has been downloaded by :ref:`Casper.download() <casper_downl
 
 .. versionadded:: 0.6.9
 
-Emitted when an error hasn't been caught. Do basically what PhantomJS' ``onError()`` native handler does.
+Emitted when an error hasn't been explicitly caught within the CasperJS/PhantomJS environment. Do basically what PhantomJS' ``onError()`` native handler does.
 
 .. index:: exit
 
@@ -397,6 +412,21 @@ Emitted when a navigation step has been executed.
 
 Emitted when a new navigation step has been created.
 
+``step.error``
+~~~~~~~~~~~~~~
+
+**Arguments:** ``error``
+
+.. versionadded:: 1.1
+
+Emitted when a step function has errored.
+
+By default, CasperJS doesn't listen to this event, you have to declare your own listeners by hand::
+
+    casper.on('step.error', function(err) {
+        this.die("Step has failed: " + err);
+    });
+
 ``step.start``
 ~~~~~~~~~~~~~~
 

@@ -5,7 +5,7 @@
 Installation
 ============
 
-CasperJS can be installed on most Linuxes, OSX and Windows.
+CasperJS can be installed on Mac OSX, Windows and most Linuxes.
 
 Prerequisites
 -------------
@@ -30,7 +30,7 @@ Prerequisites
 Installing from Homebrew (OSX)
 ------------------------------
 
-Installation of both PhantomJS and CasperJS can be achieved through `Homebrew <http://mxcl.github.com/homebrew/>`_.
+Installation of both PhantomJS and CasperJS can be achieved using Homebrew_, a popular package manager for Mac OS X.
 
 For the 1.1 development version (recommended)::
 
@@ -155,6 +155,7 @@ Known Bugs & Limitations
 
 - Due to its asynchronous nature, CasperJS doesn't work well with `PhantomJS' REPL <http://code.google.com/p/phantomjs/wiki/InteractiveModeREPL>`_.
 
+.. _Homebrew: http://mxcl.github.com/homebrew/
 .. _PhantomJS: http://phantomjs.org/
 .. _Python: http://python.org/
 .. _SlimerJS: http://slimerjs.org/

@@ -380,6 +380,7 @@ Casper.prototype.checkStep = function checkStep(self, onComplete) {
         }
     } catch (error) {
         self.emit('complete.error', error);
+        this.emit('error', error);
     }
 };
 
@@ -1526,6 +1527,7 @@ Casper.prototype.runStep = function runStep(step) {
         }
     } catch (err) {
         this.emit('step.error', err);
+        this.emit('error', err);
     }
     if (!skipLog) {
         this.emit('step.complete', stepResult);