From 23c82a270bf7b99bd86ce8127d5cfa88fed0a0cc Mon Sep 17 00:00:00 2001
From: Scott Taylor <wonderboymusic@git.wordpress.org>
Date: Tue, 22 Sep 2015 19:09:28 +0000
Subject: [PATCH] PINGBACKS: After [34442], switch to `is_singular()` to check
 attachments and pages as well.

See #20226.


git-svn-id: https://develop.svn.wordpress.org/trunk@34443 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-includes/class-wp.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/wp-includes/class-wp.php b/src/wp-includes/class-wp.php
index 44482dee0d..625dd8bdd2 100644
--- a/src/wp-includes/class-wp.php
+++ b/src/wp-includes/class-wp.php
@@ -597,7 +597,7 @@ class WP {
 		if ( is_admin() || is_robots() || $wp_query->posts ) {
 
 			// Only set X-Pingback for single posts.
-			if ( is_single() ) {
+			if ( is_singular() ) {
 				$p = get_queried_object();
 				if ( $p && pings_open( $p ) ) {
 					@header( 'X-Pingback: ' . get_bloginfo( 'pingback_url' ) );