let Gollum::Markup handle code blocks instead of RedCarpet

lib/gollum/markup.rb

@@ -449,6 +449,7 @@ module Gollum
           @wiki.sanitizer
 
         data = extract_tex(@data.dup)
+        data = extract_code(data)
         data = extract_tags(data)
 
         flags = [
@@ -457,11 +458,11 @@ module Gollum
           :tables,
           :strikethrough,
           :lax_htmlblock,
-          :gh_blockcode,
           :no_intraemphasis
         ]
         data = Redcarpet.new(data, *flags).to_html
         data = process_tags(data)
+        data = process_code(data)
 
         doc  = Nokogiri::HTML::DocumentFragment.parse(data)
 

test/test_markup.rb

@@ -421,6 +421,31 @@ context "Markup" do
              "</span> <span class=\"mi\">2</span>\n</pre>\n</div>\n\n\n<p>b</p>"
     compare(content, output)
   end
+  
+  test "code with wiki links" do
+    content = <<-END
+booya
+
+``` python
+np.array([[2,2],[1,3]],np.float)
+```
+    END
+
+    # rendered with Gollum::Markup
+    page, rendered = render_page(content)
+    assert_markup_highlights_code Gollum::Markup, rendered
+
+    if Gollum.const_defined?(:MarkupGFM)
+      rendered_gfm = Gollum::MarkupGFM.new(page).render
+      assert_markup_highlights_code Gollum::MarkupGFM, rendered_gfm
+    end
+  end
+
+  def assert_markup_highlights_code(markup_class, rendered)
+    assert_match /div class="highlight"/, rendered, "#{markup_class} doesn't highlight code\n #{rendered}"
+    assert_match /span class="n"/, rendered, "#{markup_class} doesn't highlight code\n #{rendered}"
+    assert_match /\(\[\[/, rendered, "#{markup_class} parses out wiki links\n#{rendered}"
+  end
 
   #########################################################################
   #
@@ -515,13 +540,18 @@ context "Markup" do
   #
   #########################################################################
 
-  def compare(content, output, ext = "md", regexes = [])
+  def render_page(content, ext = "md")
     index = @wiki.repo.index
     index.add("Bilbo-Baggins.#{ext}", content)
     index.commit("Add baggins")
 
     page = @wiki.page("Bilbo Baggins")
-    rendered = Gollum::Markup.new(page).render
+    [page, Gollum::Markup.new(page).render]
+  end
+
+  def compare(content, output, ext = "md", regexes = [])
+    page, rendered = render_page(content, ext)
+
     if regexes.empty?
       assert_equal normal(output), normal(rendered)
     else