class RDoc::Parser::C

def look_for_directives_in context, comment
  @preprocess.handle comment, context do |directive, param|
    case directive
    when 'main' then
      @options.main_page = param
      warn <<~MSG
        The :main: directive is deprecated and will be removed in RDoc 7.
        You can use these options to specify the initial page displayed instead:
        - `--main=#{param}` via the command line
        - `rdoc.main = "#{param}"` if you use `RDoc::Task`
        - `main_page: #{param}` in your `.rdoc_options` file
      MSG
      ''
    when 'title' then
      @options.default_title = param if @options.respond_to? :default_title=
      warn <<~MSG
        The :title: directive is deprecated and will be removed in RDoc 7.
        You can use these options to specify the title displayed instead:
        - `--title=#{param}` via the command line
        - `rdoc.title = "#{param}"` if you use `RDoc::Task`
        - `title: #{param}` in your `.rdoc_options` file
      MSG
      ''
    end
  end
  comment
end