markdown_test.rb

require 'maruku'
require 'rdiscount'

CODE = <<-MD
# this is markdown now

```
hello word
```
MD

puts 'Maruku:', Maruku.new(CODE, :fenced_code_blocks => true).to_html
puts ' - - - - - - '
puts 'RDiscount:', RDiscount.new(CODE).to_html

output

Maruku:

<h1 id="this_is_markdown_now">this is markdown now</h1>

<pre><code>hello word</code></pre>
 - - - - - -
RDiscount:
<h1>this is markdown now</h1>

<pre><code>hello word
</code></pre>