# File lib/haml/exec.rb, line 198
      def set_opts(opts)
        super

        opts.banner = "Usage: haml [options] [INPUT] [OUTPUT]\n\nDescription:\n  Converts Haml files to HTML.\n\nOptions:\n"

        opts.on('-c', '--check', "Just check syntax, don't evaluate.") do
          require 'stringio'
          @options[:check_syntax] = true
          @options[:output] = StringIO.new
        end

        opts.on('-t', '--style NAME',
                'Output style. Can be indented (default) or ugly.') do |name|
          @options[:for_engine][:ugly] = true if name.to_sym == :ugly
        end

        opts.on('-f', '--format NAME',
                'Output format. Can be html5 (default), xhtml, or html4.') do |name|
          @options[:for_engine][:format] = name.to_sym
        end

        opts.on('-e', '--escape-html',
                'Escape HTML characters (like ampersands and angle brackets) by default.') do
          @options[:for_engine][:escape_html] = true
        end

        opts.on('--no-escape-attrs',
                "Don't escape HTML characters (like ampersands and angle brackets) in attributes.") do
          @options[:for_engine][:escape_attrs] = false
        end

        opts.on('-q', '--double-quote-attributes',
                'Set attribute wrapper to double-quotes (default is single).') do
          @options[:for_engine][:attr_wrapper] = '"'
        end

        opts.on('--cdata',
                'Always add CDATA sections to javascript and css blocks.') do
          @options[:for_engine][:cdata] = true
        end

        opts.on('--autoclose LIST',
                'Comma separated list of elements to be automatically self-closed.') do |list|
          @options[:for_engine][:autoclose] = list.split(',')
        end

        opts.on('--suppress-eval',
                'Don\'t evaluate Ruby scripts.') do
          @options[:for_engine][:suppress_eval] = true
        end

        opts.on('-r', '--require FILE', "Same as 'ruby -r'.") do |file|
          @options[:requires] << file
        end

        opts.on('-I', '--load-path PATH', "Same as 'ruby -I'.") do |path|
          @options[:load_paths] << path
        end

        unless RUBY_VERSION < "1.9"
          opts.on('-E ex[:in]', 'Specify the default external and internal character encodings.') do |encoding|
            external, internal = encoding.split(':')
            Encoding.default_external = external if external && !external.empty?
            Encoding.default_internal = internal if internal && !internal.empty?
          end
        end

        opts.on('-d', '--debug', "Print out the precompiled Ruby source.") do
          @options[:debug] = true
        end

        opts.on('-p', '--parse', "Print out Haml parse tree.") do
          @options[:parse] = true
        end

      end