class Erubis::Main

def get_enhancers(enhancer_names)
  return [] unless enhancer_names
  enhancers = []
  shortname = nil
  begin
    enhancer_names.split(/,/).each do |name|
      shortname = name
      enhancers << Erubis.const_get("#{shortname}Enhancer")
    end
  rescue NameError
    raise CommandOptionError.new("#{shortname}: no such Enhancer (try '-h' to show all enhancers).")
  end
  return enhancers
end