gistfile1.txt

- $f = new form($this->parser, '/',$user) do
  %p
    = $f->input('name')

gistfile2.php

<?php
class form {
  protected $parser;
  protected $object;
  
  function __construct($parser, $url, $object) {
    $this->parser = $parser;
    $this->object = $object;
    ob_start();
    $this->parser->setSource("%form\{:action=\"#\" :method=>\"post\" :accept-charset =>\"utf-8\"}")->display();
  }
  
  function input($name) {
    $parser_string = "%input\{:name => \"{$name}\"";
    
    if ($this->object->get($name))
      $parser_string .=  ' :value => "'.$this->object->get($name).'"';

    $parser_string .= '}';

    $this->parser->setSource($parser_string)->display();
  }
  
  function __destruct() {
    ?>
      <p><input type="submit" value="Continue →" /></p>
    </form>
    <?php
    echo ob_get_clean();
  }
}
?>

gistfile3.phtml

<form action="/" method="post" accept-charset="utf-8">
  <p>
    <input name="name" value="<?php echo $user->get("name") ?>" />
  </p>
  <p><input type="submit" value="Continue →" /></p>
</form>