show the custom file content as a shot code using the file attr in shortcode


// Match Fixture
    function all_forms($atts) { 
      extract( shortcode_atts( array(
        'file' => ''
      ), $atts ) );
      
      if ($file!='')
        return @file_get_contents($file);
    } 
    // register shortcode
    add_shortcode('all_forms', 'all_forms');