Gollum Configuration

config.rb

require 'commonmarker'

module Gollum
  class Markup
    mmd = proc { |content|
     MultiMarkdown.new(content).to_html
    }
    GitHub::Markup::Markdown::MARKDOWN_GEMS['commonmarker'] = proc { |content, options: {}|
          commonmarker_opts = [:GITHUB_PRE_LANG].concat(options.fetch(:commonmarker_opts, []))
          commonmarker_exts = options.fetch(:commonmarker_exts, [:tagfilter, :autolink, :table, :strikethrough, :tasklist])
          CommonMarker.render_html(content, commonmarker_opts, commonmarker_exts)
        }
    GitHub::Markup::Markdown::MARKDOWN_GEMS.delete('kramdown')
  end
end

wiki_options = {
  :allow_uploads => true,
  :critic_markup => true,
  :emoji => true,
  :hyphened_tag_lookup => true,
  :case_insensitive_tag_lookup => true,
  :global_tag_lookup => true,
  :show_all => true,
}

Precious::App.set(:wiki_options, wiki_options)
Gollum::Page.send :remove_const, :FORMAT_NAMES if defined? Gollum::Page::FORMAT_NAMES
Gollum::Page::FORMAT_NAMES = { :markdown => "Markdown" }