--- a/vendor/diff-display/README.txt
+++ b/vendor/diff-display/README.txt
@@ -1,2 +1,58 @@
+Diff::Display
+=============
+
+Diff::Display::Unified renders unified diffs into various forms. The output is
+based on a callback object that's passed into the renderer
+
 Rewrite of an (unreleased) library by Marcel Molina Jr., who wrote this it 
-probably back in 2004 or so.
\ No newline at end of file
+probably back in 2004 or so.
+
+Usage
+======
+
+irb(main):001:0> require 'diff-display'
+=> true
+irb(main):002:0> diff = <<EOS
+irb(main):003:0" diff --git a/History.txt b/History.txt
+irb(main):004:0" index 0ed7358..622c384 100644
+irb(main):005:0" --- a/History.txt
+irb(main):006:0" +++ b/History.txt
+irb(main):007:0" @@ -1,4 +1,5 @@
+irb(main):008:0"  == 0.0.1 2008-01-28
+irb(main):009:0"  
+irb(main):010:0" -* 1 major enhancement:
+irb(main):011:0" -  * Initial release
+irb(main):012:0" +* 2 major enhancements:
+irb(main):013:0" +  * The Initial release
+irb(main):014:0" +  * stuff added
+irb(main):015:0" EOS
+...
+irb(main):016:0> diff_display = Diff::Display::Unified.new(diff)
+=> #<Diff::Display::Unified:0x331c9c @data=...
+# Be boring and render it back out as a diff
+irb(main):017:0> puts diff_display.render(Diff::Renderer::Diff.new)
+diff --git a/History.txt b/History.txt
+index 0ed7358..622c384 100644
+--- a/History.txt
++++ b/History.txt
+@@ -1,4 +1,5 @@
+ == 0.0.1 2008-01-28
+ 
+-* 1 major enhancement:
+-  * Initial release
++* 2 major enhancements:
++  * The Initial release
++  * stuff added
+
+See Diff::Renderer::Base for what methods your callback needs to implement
+
+Git Repository
+===============
+
+http://gitorious.org/projects/diff-display/
+
+
+License
+======
+
+Please see License.txt

--- a/vendor/diff-display/lib/diff/display/data_structure.rb
+++ b/vendor/diff-display/lib/diff/display/data_structure.rb
@@ -56,6 +56,10 @@ module Diff
         @number = line_number
       end
       attr_reader :number
+      
+      def inspect
+        %Q{#<#{self.class.name} [#{number.inspect}] "#{self}">}
+      end
     end
     
     class AddLine < Line

--- a/vendor/diff-display/lib/diff/display/unified/generator.rb
+++ b/vendor/diff-display/lib/diff/display/unified/generator.rb
@@ -79,19 +79,7 @@ module Diff::Display
       if new_line_type.eql?(@line_type)
         @buffer.push(line)
       else
-        # Side by side inline diff
-        #
-        # e.g.
-        #
-        #   - This line just had to go
-        #   + This line is on the way in
-        #
-        if new_line_type.eql?(LINE_TYPES['+']) and @line_type.eql?(LINE_TYPES['-'])
-          @prev_buffer = @buffer
-          @prev_line_type = @line_type
-        else
-          identify_block
-        end
+        identify_block
         @buffer = [line]
         @line_type = new_line_type
       end

--- /dev/null
+++ b/vendor/diff-display/spec/fixtures/multiple_rems_then_add.diff
@@ -0,0 +1,14 @@
+diff --git a/strokedb-ruby/lib/stores/chainable_storage.rb b/strokedb-ruby/lib/stores/chainable_storage.rb
+index 5326c92..1e2de8f 100644
+--- a/strokedb-ruby/lib/stores/chainable_storage.rb
++++ b/strokedb-ruby/lib/stores/chainable_storage.rb
+@@ -44,9 +44,7 @@ module StrokeDB
+     def save_with_chained_storages!(chunk,source=nil)
+       perform_save!(chunk)
+       (@chained_storages||{}).each_pair do |storage,savings|
+-        unless storage == chunk
+-          savings << chunk unless savings.include?(chunk)
+-        end
++          savings << chunk unless  storage == chunk || savings.include?(chunk)
+       end
+     end
\ No newline at end of file

--- a/vendor/diff-display/spec/generator_spec.rb
+++ b/vendor/diff-display/spec/generator_spec.rb
@@ -32,4 +32,14 @@ describe Diff::Display::Unified::Generator do
     end
   end
   
+  describe "edgecase bugs" do
+    it "multiple rems and an add is in parity" do
+      diff_data = load_diff("multiple_rems_then_add")
+      data = Diff::Display::Unified::Generator.run(diff_data)
+      #pp data
+      data.to_diff.should == diff_data.chomp
+    end
+    
+  end
+  
 end

--- a/vendor/diff-display/spec/renderer/base_spec.rb
+++ b/vendor/diff-display/spec/renderer/base_spec.rb
@@ -21,10 +21,10 @@ describe Diff::Renderer::Base do
   #   @base_renderer.render(@data)
   # end
   
-  it "calls the before_modblock" do
-    @base_renderer.expects(:before_modblock).at_least_once
-    @base_renderer.render(@data)
-  end
+  # it "calls the before_modblock" do
+  #   @base_renderer.expects(:before_modblock).at_least_once
+  #   @base_renderer.render(@data)
+  # end
   
   it "calls the before_unmodblock" do
     @base_renderer.expects(:before_unmodblock).at_least_once
@@ -71,10 +71,10 @@ describe Diff::Renderer::Base do
   #   @base_renderer.render(@data)
   # end
   
-  it "calls the after_modblock" do
-    @base_renderer.expects(:after_modblock).at_least_once
-    @base_renderer.render(@data)
-  end
+  # it "calls the after_modblock" do
+  #   @base_renderer.expects(:after_modblock).at_least_once
+  #   @base_renderer.render(@data)
+  # end
   
   it "calls the after_unmodblock" do
     @base_renderer.expects(:after_unmodblock).at_least_once