New: *Simple Diff Scanner* (closes #22).

* Highlights unified diffs, especially like the ones svn diff outputs.
* Changes to make highlighting of whole lines were necessary.
* I added two example files.

More changes:
* Added token classes :head, :delete, :insert, and :change along with styles.
* Added two new special token types: :begin_line and :end_line. They mark token groups that explicitly span whole lines and should be highlighted as such.
* The HTML encoder converts these new tokens to DIVs. May need more work.
* The Debug Encoder uses square brackets for line tokens.
* Some cleanups.

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/coderay/encoders/debug.rb b/lib/coderay/encoders/debug.rb
index 8e1c0f0..a4b0648 100644
--- a/lib/coderay/encoders/debug.rb
+++ b/lib/coderay/encoders/debug.rb
@@ -35,6 +35,14 @@ module Encoders
       ">"
     end
 
+    def begin_line kind
+      "#{kind}["
+    end
+
+    def end_line kind
+      "]"
+    end
+
   end
 
 end