Github Flavor Markdownに変更 #10

Gemfile

@@ -52,8 +52,7 @@ gem 'devise'
 gem 'omniauth-google-oauth2'
 
 # Markdown
-gem 'redcarpet', :git => 'git://github.com/vmg/redcarpet.git',
-                 :branch => "master"
+gem 'github-markdown'
 
 # Syntax Highlight
 gem 'coderay'

Gemfile.lock

@@ -7,13 +7,6 @@ GIT
       activesupport
       gmail_xoauth
 
-GIT
-  remote: git://github.com/vmg/redcarpet.git
-  revision: e627bee83b80fd440fc7edb609def9cb4393e332
-  branch: master
-  specs:
-    redcarpet (3.1.1)
-
 GEM
   remote: https://rubygems.org/
   specs:
@@ -122,6 +115,7 @@ GEM
       multipart-post (>= 1.2, < 3)
     ffi (1.9.3)
     formatador (0.2.4)
+    github-markdown (0.6.4)
     gmail_xoauth (0.4.1)
       oauth (>= 0.3.6)
     guard (2.4.0)
@@ -360,6 +354,7 @@ DEPENDENCIES
   devise
   factory_girl_rails
   faraday
+  github-markdown
   guard-rspec
   guard-rubocop
   i18n_generators
@@ -375,7 +370,6 @@ DEPENDENCIES
   pry-rails
   rack-mini-profiler
   rails (~> 4.0)
-  redcarpet!
   rspec-rails
   rubocop
   sass-rails

app/helpers/application_helper.rb

 module ApplicationHelper
-  class HtmlWithPrettyPrint < Redcarpet::Render::HTML
-    def postprocess(full_document)
-      full_document.gsub('prettyprint', 'prettyprint linenums')
-    end
-  end
 
   def h_application_format_markdown(text)
-    # html_render = HTMLwithCoderay.new(filter_html: true, hard_wrap: true, prettify: true)
-    html_render = HtmlWithPrettyPrint.new(prettify: true)
-    options = {
-      autolink: true,
-      space_after_headers: true,
-      fenced_code_blocks: true,
-      tables: true
-    }
-    markdown    = Redcarpet::Markdown.new(html_render, options)
-    markdown.render(text).html_safe
+    text = GitHub::Markdown.render_gfm(text)
+    text.html_safe
   end
+
 end