Updated item_passed signal to send passed item in 'item' argument, instead of 'output' argument, keeping backwards compatibility for the 'output' argument. Closes #273

docs/topics/signals.rst

@@ -83,10 +83,11 @@ item_passed
 -----------
 
 .. signal:: item_passed
-.. function:: item_passed(item, spider, output)
+.. function:: item_passed(item, spider, original_item)
 
-    Sent after an item has passed all the :ref:`topics-item-pipeline` stages without
-    being dropped.
+    Sent after an item has passed all the :ref:`topics-item-pipeline` stages
+    without being dropped. Same as :func:`item_scraped` if there are no
+    pipelines enabled.
 
     This signal supports returning deferreds from their handlers.
 
@@ -96,9 +97,10 @@ item_passed
     :param spider: the spider which scraped the item
     :type spider: :class:`~scrapy.spider.BaseSpider` object
 
-    :param output: the output of the item pipeline. This is typically the
+    :param original_item: the input of the item pipeline. This is typically the
         same :class:`~scrapy.item.Item` object received in the ``item``
         parameter, unless some pipeline stage created a new item.
+    :type spider: :class:`~scrapy.spider.BaseSpider` object
 
 item_dropped
 ------------

scrapy/core/scraper.py

@@ -209,6 +209,7 @@ class Scraper(object):
                 log.err(output, 'Error processing %s' % item, spider=spider)
         else:
             log.msg(log.formatter.passed(output, spider), log.INFO, spider=spider)
+            # TODO: remove item_passed 'output' parameter for Scrapy 0.12
             return send_catch_log_deferred(signal=signals.item_passed, \
-                item=item, spider=spider, output=output)
+                item=output, spider=spider, output=output, original_item=item)