Using a different Markdown processor
There are a handful of Markdown processing libraries available for Ruby, each with different advantages and features. Since version 0.9.11, Nesta uses Ryan Tomayko’s Tilt library to work out which processor to use when rendering a file within your
At the time of writing, Tilt knows about the following Markdown processors:
Tilt will try to load a Markdown processor in the order defined above. If it can’t find Redcarpet, it’ll try RDiscount, then BlueCloth, etc.
RDiscount is used in Nesta by default, as it is the only one that is included automatically as a Nesta dependency (i.e. it is the only one that is likely to be available in your project so Tilt is likely to find it first).
Installing other processors
To change the default (e.g. to BlueCloth), add your chosen processor’s gem to your
Gemfile and re-run
$ cd path/to/project $ echo 'gem "bluecloth"' >> Gemfile $ bundle
The other gems that you might want to install are called
rdiscount gem is already installed).
Then tell Tilt that you’d rather it used BlueCloth by adding the following line of Ruby code to the
app.rb file within your project (if you don’t have an
app.rb file, just create it):
The full list of class names that you might want to use in place of
This post may go out of date as the Markdown processing support in Ruby evolves. You can always check the list of class names at the bottom of
tilt.rb to review current options…