closes GitHub issue #57

app/helpers/markdown_helper.rb

@@ -1,21 +1,12 @@
 module MarkdownHelper
 
   def markdown(content)
-    md = Redcarpet::Markdown.new(FlavoredMarkdown,
+    md = Redcarpet::Markdown.new(FlavoredMarkdown, MARKDOWN_OPTS)
-                                 filter_html: true,
-                                 escape_html: true,
-                                 no_images: true,
-                                 no_styles: true,
-                                 safe_links_only: true,
-                                 xhtml: false,
-                                 hard_wrap: true,
-                                 no_intra_emphasis: true,
-                                 tables: true,
-                                 fenced_code_blocks: true,
-                                 autolink: true,
-                                 disable_indented_code_blocks: true,
-                                 strikethrough: true,
-                                 superscript: false)
     Sanitize.fragment(md.render(content), EVIL_TAGS).html_safe
   end
+
+  def strip_markdown(content)
+    md = Redcarpet::Markdown.new(Redcarpet::Render::StripDown, MARKDOWN_OPTS)
+    CGI.unescape_html Sanitize.fragment(md.render(content), EVIL_TAGS)
+  end
 end

app/models/services/twitter.rb

@@ -1,5 +1,6 @@
 class Services::Twitter < Service
   include Rails.application.routes.url_helpers
+  include MarkdownHelper
 
   def provider
     "twitter"
@@ -27,8 +28,8 @@ class Services::Twitter < Service
 
     def prepare_tweet(answer)
       # TODO: improve this.
-      question_content = answer.question.content
+      question_content = strip_markdown answer.question.content
-      answer_content = answer.content
+      answer_content = strip_markdown answer.content
       answer_url = show_user_answer_url(
         id: answer.id,
         username: answer.user.screen_name,

config/initializers/redcarpet.rb

@@ -0,0 +1,18 @@
+require 'redcarpet/render_strip'
+
+MARKDOWN_OPTS = {
+    filter_html: true,
+    escape_html: true,
+    no_images: true,
+    no_styles: true,
+    safe_links_only: true,
+    xhtml: false,
+    hard_wrap: true,
+    no_intra_emphasis: true,
+    tables: true,
+    fenced_code_blocks: true,
+    autolink: true,
+    disable_indented_code_blocks: true,
+    strikethrough: true,
+    superscript: false
+}