class Haml::Parser

def plain(line, escape_html = nil)
  if block_opened?
    raise SyntaxError.new(Error.message(:illegal_nesting_plain), @next_line.index)
  end
  unless contains_interpolation?(line.text)
    return ParseNode.new(:plain, line.index + 1, :text => line.text)
  end
  escape_html = @options.escape_html if escape_html.nil?
  line.text = unescape_interpolation(line.text, escape_html)
  script(line, false)
end