From a4f6f2beaec7c14ff08dc099b34ef81efead1dc7 Mon Sep 17 00:00:00 2001
From: Sergey Biryukov <sergeybiryukov.ru@gmail.com>
Date: Tue, 14 Apr 2020 11:32:06 +0000
Subject: [PATCH] Mail: Make the check for empty post title in `wp-mail.php`
 more resilient.

This addresses a regression in [47054], which caused posts sent via email to published with an empty title.

Props whyisjake, Otto42, MarkRH, MattyRob, mukesh27, afragen, pikamander2.
Fixes #49853.
Built from https://develop.svn.wordpress.org/trunk@47580


git-svn-id: http://core.svn.wordpress.org/trunk@47355 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/version.php | 2 +-
 wp-mail.php             | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/wp-includes/version.php b/wp-includes/version.php
index 307253501c..0a1ad8d6de 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47578';
+$wp_version = '5.5-alpha-47580';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
diff --git a/wp-mail.php b/wp-mail.php
index 02635157c5..1d5fbedf03 100644
--- a/wp-mail.php
+++ b/wp-mail.php
@@ -213,7 +213,7 @@ for ( $i = 1; $i <= $count; $i++ ) {
 
 	$post_title = xmlrpc_getposttitle( $content );
 
-	if ( '' === $post_title ) {
+	if ( '' === trim( $post_title ) ) {
 		$post_title = $subject;
 	}