* for pull request #258: update CHANGES, add tests, add a document and refactoring.

tests/roots/test-directive-code/conf.py

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+# -*- coding: utf-8 -*-
+
+master_doc = 'index'

tests/roots/test-directive-code/dedent.rst

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+Dedent
+======
+
+Code blocks
+-----------
+
+.. code-block:: ruby
+   :linenos:
+   :dedent: 4
+
+       def ruby?
+           false
+       end
+
+
+Literal Include
+---------------
+
+.. literalinclude:: literal.inc
+   :language: python
+   :lines: 10-11
+   :dedent: 4

tests/roots/test-directive-code/index.rst

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+test-directive-code
+===================
+
+.. toctree::
+
+   *
+
+
+Code blocks
+-----------
+
+.. code-block:: ruby
+   :linenos:
+
+       def ruby?
+           false
+       end
+
+
+Literal Includes
+----------------
+
+.. literalinclude:: literal.inc
+   :language: python

tests/roots/test-directive-code/literal.inc

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+# Literally included file using Python highlighting
+# -*- coding: utf-8 -*-
+
+foo = "Including Unicode characters: üöä"
+
+class Foo:
+    pass
+
+class Bar:
+    def baz():
+        pass
+
+def bar(): pass