--- a/rakelib/workflow.rake	Mon Nov 21 23:24:30 2016 +0000
+++ b/rakelib/workflow.rake	Tue Nov 22 21:19:13 2016 +0000
@@ -5,36 +5,74 @@
 
 namespace :'workflow' do
   # A helper function to :push-upstream and push-staging tasks
-  def push(remote, user, pass)  
+  def hg_repositories()     
     project.packages_and_application.each do | pkg |
       if not pkg.nested_package? then
         repo = Rake::Stx::Configuration::Repository::find(pkg.repository)
         if repo.type == :'hg' then
-          hg = HG::Repository.new(BUILD_DIR / pkg.directory)
-          opts = {
-            :user => user,
-            :pass => pass,
-          }      
-          if hg.bookmark() then
-            opts[:bookmarks] = '.'
-          else 
-            opts[:rev] = '.'
-          end
-          hg.push(remote, **opts)
+          hg = HG::Repository.new(BUILD_DIR / pkg.directory)          
+          yield hg          
         end
       end
+    end    
+  end
+  
+  def push(remote, user, pass, review_only, push_bookmark)  
+    hg_repositories do | hg |
+      opts = {
+        :user => user,
+        :pass => pass,
+      }                  
+      if review_only then
+        opts[:rev] = '.'
+        remote_url = hg.paths[remote] || remote
+        bookmark = hg.bookmark()
+        puts ""
+        puts "== changes going to #{remote_url} =="
+        puts ""
+        hg.outgoing(remote, **opts)
+        puts ""
+        if push_bookmark and bookmark then
+          puts "Will update bookmark '#{bookmark}"
+        end
+        puts "===================================="
+        puts ""
+      else
+        if push_bookmark && bookmark then
+          opts[:bookmarks] = ['.']
+        else
+          opts[:rev] = '.'
+        end        
+        hg.push(remote, **opts)
+      end
     end
   end
 
+  desc "Display changes to be pushed to upstream repositores (use it to review what workflow:push-upstream would do)"
+  task :'out-upstream', :user, :pass do | t, args |
+    push('default', args[:user], args[:pass], true, false)
+  end
+  task :'out-upstream' => :'setup'
+
   desc "Push currently checked out revisions to upstream repositories (to be called after all tests pass on all configurations)"
   task :'push-upstream', :user, :pass do | t, args |
-    push('default', args[:user] || nil, args[:pass] || nil)
+    push('default', args[:user], args[:pass], false, false)
   end
   task :'push-upstream' => :'setup'
 
+
+  desc "Display changes to be pushed to staging repositores (use it to review what workflow:push-staging would do)"
+  task :'out-staging', :user, :pass do | t, args |
+    push('staging', args[:user], args[:pass], true, true)
+  end
+  task :'out-staging' => :'setup'
+
   desc "Push currently checked out revisions to staging repositories (to be by developer to test her changes)"
   task :'push-staging', :user, :pass do | t, args |
-    push('staging', args[:user] || nil, args[:pass] || nil)
+    push('staging', args[:user], args[:pass], false, true)
   end
   task :'push-staging' => :'setup'
+
+
+
 end