For testing duplication suspect bug in Facetious

facetious-bug-test.php

<?php
/*
 * Plugin Name: Facetious Bug Test
 * Description: Just testing
 * Author: Code For The People
 */

function fbt_taxos() {

	register_extended_taxonomy( 'doc-type', 'attachment' );
	register_extended_taxonomy( 'part', 'attachment' );
	register_extended_taxonomy( 'doc-language', 'attachment' );

}
add_action( 'init', 'fbt_taxos' );

function fbt_attachments_search_pre_get_posts( $query ) {

	if ( ! is_search() )
		return $query;

	// add post type attachment
	$post_types = $query->get( 'post_type' );
	if ( ! $post_types || 'post' == $post_types )
		$post_types = array( 'post', 'attachment' );

	if ( is_array( $post_types ) )
		$post_types[] = 'attachment';

	$query->set( 'post_type', $post_types );

	// add post status 'inherit'
	$post_status = $query->get( 'post_status' );

	if ( ! $post_status || 'publish' == $post_status )
		$post_status = array( 'publish', 'inherit' );

	if ( is_array( $post_status ) )
		$post_status[] = 'inherit';

	$query->set( 'post_status', $post_status );

	return $query;
}
// hook our function to the filter
add_filter( 'pre_get_posts', 'fbt_attachments_search_pre_get_posts' );

theme-content-attechment.php

<?php
/**
 * The default template for displaying content
 *
 * Used for both single and index/archive/search.
 *
 * @package WordPress
 * @subpackage Twenty_Fourteen
 * @since Twenty Fourteen 1.0
 */
?>

<article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>

	<div class="entry-summary">
		<?php echo wp_get_attachment_url( get_the_ID() ); ?>
	</div><!-- .entry-summary -->

	<?php the_tags( '<footer class="entry-meta"><span class="tag-links">', '', '</span></footer>' ); ?>
</article><!-- #post-## -->

theme-search.php

<?php
/**
 * The template for displaying Search Results pages
 *
 * @package WordPress
 * @subpackage Twenty_Fourteen
 * @since Twenty Fourteen 1.0
 */

get_header(); ?>

	<section id="primary" class="content-area">
		<div id="content" class="site-content" role="main">

			<!-- Hello?! -->
			<?php
				$args = array(
					'search' => __('Search'),
					'fields' => array(
						's' => array(
							'label' => 'Enter a keyword',
						),
						'doc-type' => array(
							'label' => 'Type of document',
							'all' => 'All types',
						),
						'part' => array(
							'label' => 'Part',
							'all' => 'All parts',
						),
						'doc-language' => array(
							'label' => 'Language',
							'all' => 'Both languages',
						),
						'm',
					),
				);
				do_action( 'facetious', $args );
			?>

			<?php if ( have_posts() ) : ?>

			<header class="page-header">
				<h1 class="page-title"><?php printf( __( 'Search Results for: %s', 'twentyfourteen' ), get_search_query() ); ?></h1>
			</header><!-- .page-header -->

				<?php
					// Start the Loop.
					while ( have_posts() ) : the_post();

						/*
						 * Include the post format-specific template for the content. If you want to
						 * use this in a child theme, then include a file called called content-___.php
						 * (where ___ is the post format) and that will be used instead.
						 */
						get_template_part( 'content', 'attachment' );

					endwhile;
					// Previous/next post navigation.
					twentyfourteen_paging_nav();

				else :
					// If no content, include the "No posts found" template.
					get_template_part( 'content', 'none' );

				endif;
			?>

		</div><!-- #content -->
	</section><!-- #primary -->

<?php
get_sidebar( 'content' );
get_sidebar();
get_footer();

theme-style.css

/*
Theme Name: Facetious Bug Test Theme
Author: Code For The People
Description: Just testin'
Template: twentyfourteen
*/

@import url('../twentyfourteen/style.css');