diff -r 3d4e9c994f10 -r a86126ab1dd4 wp/wp-admin/link-manager.php
--- a/wp/wp-admin/link-manager.php	Tue Oct 22 16:11:46 2019 +0200
+++ b/wp/wp-admin/link-manager.php	Tue Dec 15 13:49:49 2020 +0100
@@ -7,14 +7,14 @@
  */
 
 /** Load WordPress Administration Bootstrap */
-require_once( dirname( __FILE__ ) . '/admin.php' );
+require_once __DIR__ . '/admin.php';
 if ( ! current_user_can( 'manage_links' ) ) {
 	wp_die( __( 'Sorry, you are not allowed to edit the links for this site.' ) );
 }
 
 $wp_list_table = _get_list_table( 'WP_Links_List_Table' );
 
-// Handle bulk deletes
+// Handle bulk deletes.
 $doaction = $wp_list_table->current_action();
 
 if ( $doaction && isset( $_REQUEST['linkcheck'] ) ) {
@@ -23,7 +23,7 @@
 	$redirect_to = admin_url( 'link-manager.php' );
 	$bulklinks   = (array) $_REQUEST['linkcheck'];
 
-	if ( 'delete' == $doaction ) {
+	if ( 'delete' === $doaction ) {
 		foreach ( $bulklinks as $link_id ) {
 			$link_id = (int) $link_id;
 
@@ -32,8 +32,10 @@
 
 		$redirect_to = add_query_arg( 'deleted', count( $bulklinks ), $redirect_to );
 	} else {
-		/** This action is documented in wp-admin/edit-comments.php */
-		$redirect_to = apply_filters( 'handle_bulk_actions-' . get_current_screen()->id, $redirect_to, $doaction, $bulklinks );
+		$screen = get_current_screen()->id;
+
+		/** This action is documented in wp-admin/edit.php */
+		$redirect_to = apply_filters( "handle_bulk_actions-{$screen}", $redirect_to, $doaction, $bulklinks ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
 	}
 	wp_redirect( $redirect_to );
 	exit;
@@ -44,17 +46,22 @@
 
 $wp_list_table->prepare_items();
 
-$title     = __( 'Links' );
-$this_file = $parent_file = 'link-manager.php';
+$title       = __( 'Links' );
+$this_file   = 'link-manager.php';
+$parent_file = $this_file;
 
 get_current_screen()->add_help_tab(
 	array(
 		'id'      => 'overview',
 		'title'   => __( 'Overview' ),
 		'content' =>
-			 '<p>' . sprintf( __( 'You can add links here to be displayed on your site, usually using <a href="%s">Widgets</a>. By default, links to several sites in the WordPress community are included as examples.' ), 'widgets.php' ) . '</p>' .
-			 '<p>' . __( 'Links may be separated into Link Categories; these are different than the categories used on your posts.' ) . '</p>' .
-			 '<p>' . __( 'You can customize the display of this screen using the Screen Options tab and/or the dropdown filters above the links table.' ) . '</p>',
+			'<p>' . sprintf(
+				/* translators: %s: URL to Widgets screen. */
+				__( 'You can add links here to be displayed on your site, usually using <a href="%s">Widgets</a>. By default, links to several sites in the WordPress community are included as examples.' ),
+				'widgets.php'
+			) . '</p>' .
+			'<p>' . __( 'Links may be separated into Link Categories; these are different than the categories used on your posts.' ) . '</p>' .
+			'<p>' . __( 'You can customize the display of this screen using the Screen Options tab and/or the dropdown filters above the links table.' ) . '</p>',
 	)
 );
 get_current_screen()->add_help_tab(
@@ -62,7 +69,7 @@
 		'id'      => 'deleting-links',
 		'title'   => __( 'Deleting Links' ),
 		'content' =>
-			 '<p>' . __( 'If you delete a link, it will be removed permanently, as Links do not have a Trash function yet.' ) . '</p>',
+			'<p>' . __( 'If you delete a link, it will be removed permanently, as Links do not have a Trash function yet.' ) . '</p>',
 	)
 );
 
@@ -78,7 +85,7 @@
 	)
 );
 
-include_once( ABSPATH . 'wp-admin/admin-header.php' );
+require_once ABSPATH . 'wp-admin/admin-header.php';
 
 if ( ! current_user_can( 'manage_links' ) ) {
 	wp_die( __( 'Sorry, you are not allowed to edit the links for this site.' ) );
@@ -97,7 +104,7 @@
 
 <?php
 if ( isset( $_REQUEST['s'] ) && strlen( $_REQUEST['s'] ) ) {
-	/* translators: %s: search keywords */
+	/* translators: %s: Search query. */
 	printf( '<span class="subtitle">' . __( 'Search results for &#8220;%s&#8221;' ) . '</span>', esc_html( wp_unslash( $_REQUEST['s'] ) ) );
 }
 ?>
@@ -108,7 +115,8 @@
 if ( isset( $_REQUEST['deleted'] ) ) {
 	echo '<div id="message" class="updated notice is-dismissible"><p>';
 	$deleted = (int) $_REQUEST['deleted'];
-	printf( _n( '%s link deleted.', '%s links deleted', $deleted ), $deleted );
+	/* translators: %s: Number of links. */
+	printf( _n( '%s link deleted.', '%s links deleted.', $deleted ), $deleted );
 	echo '</p></div>';
 	$_SERVER['REQUEST_URI'] = remove_query_arg( array( 'deleted' ), $_SERVER['REQUEST_URI'] );
 }
@@ -126,4 +134,4 @@
 </div>
 
 <?php
-include( ABSPATH . 'wp-admin/admin-footer.php' );
+require_once ABSPATH . 'wp-admin/admin-footer.php';