class Tilt::PandocTemplate

pandoc.org/
Pandoc markdown implementation. See:

def allows_script? 

def allows_script?
  false
end

def evaluate(scope, locals, &block) 

def evaluate(scope, locals, &block)
  @output ||= @engine.to_html.strip
end

def pandoc_options

Leave other hash keys untouched
Remove hash keys with value false
Replace hash keys with value true with symbol for key
Map tilt options to pandoc options
turn options hash into an array 
def pandoc_options
  result = []
  from = "markdown"
  smart_extension = "-smart"
  options.each do |k,v|
    case k
    when :smartypants
      smart_extension = "+smart" if v
    when :escape_html
      from = "markdown-raw_html" if v
    when :commonmark
      from = "commonmark" if v
    when :markdown_strict
      from = "markdown_strict" if v
    else
      case v
      when true
        result << k
      when false
        # do nothing
      else
        result << { k => v }
      end
    end
  end
  result << { :f => from + smart_extension }
  result
end

def prepare 

def prepare
  @engine = PandocRuby.new(data, *pandoc_options)
  @output = nil
end