What are the steps to getting this 'custom' permalink scheme in Jekyll?

Question

I'm writing a Jekyll setup and I'd like to get my posts to have a permalink in the form: /2013/jan/something-something-in-january. I understand that it is impossible with vanilla permalinks to:

• get the :month to be in text form or
• get the :title to be dash delimited

I remember reading somewhere that I could achieve this by writing a plugin, but I'm not sure how. How can I do this?

Answer 1

I created a generator plugin:

module Jekyll
    class PermalinkRewriter < Generator
        safe true
        priority :low

        def generate(site)
            # Until Jekyll allows me to use :slug, I have to resort to this
            site.posts.each do |item|
                item.data['permalink'] = '/' + item.slug + '/'
            end
        end
    end
end