GitHub Flavored Markdown parser for use with Jekyll and Marked.app

gfm.rb

#!/usr/bin/env ruby
require 'rubygems'
require 'redcarpet'
require 'pygments.rb'

class HTMLwithPygments < Redcarpet::Render::HTML
  def block_code(code, language)
    Pygments.highlight(code, :lexer => language.to_sym, :options => {
      :encoding => 'utf-8'
    })
  end
end

def from_markdown(text)
  markdown = Redcarpet::Markdown.new(HTMLwithPygments,
    :fenced_code_blocks => true,
    :no_intra_emphasis => true,
    :autolink => true,
    :strikethrough => true,
    :lax_html_blocks => true,
    :superscript => true,
    :hard_wrap => false,
    :tables => true,
    :xhtml => false)

  text.gsub!(/\{\{( *)?"(.*?)"\}\}/, '\1\2')
  text.gsub!(/^\{% highlight (.+?) ?%\}(.*?)^\{% endhighlight %\}/m) do |match|
    Pygments.highlight($2, :lexer => $1, :options => {:encoding => 'utf-8'})
  end

  markdown.render(text)
end

puts from_markdown(ARGF.read)

Neat. Unless I read it wrong, the ? in text.gsub!(/\{\{( *)? is redundant.

Oh, yeah that’s right :)

Very cool. Will this work with the version of redcarpet on gh-pages? (1.17 I think?) I use this plugin to get support for fenced codeblocks on jekyll, but it is not compatible with the version on github so I must run jekyll locally first.

@cboettig I’m not sure. I generally deploy to one of my private servers. But you are welcome to try :)

I'm not a ruby programmer. How do I set it up to work with Jekyll?

Looks like they added GFM to Marked.app
http://support.markedapp.com/kb/how-to-tips-and-tricks/using-marked-with-github-flavored-markdown-and-syntax-highlighting