From e61bebdbfc6b4f2af877b4da3e331b8e7bab5ad7 Mon Sep 17 00:00:00 2001
From: Gary Pendergast <gary@pento.net>
Date: Fri, 14 Nov 2014 21:34:22 +0000
Subject: [PATCH] If a saving a post fails, remove any invalid characters (such
 as emoji) from the primary text fields, then try to save it again.

See #21212.


Built from https://develop.svn.wordpress.org/trunk@30346


git-svn-id: http://core.svn.wordpress.org/trunk@30345 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-admin/includes/post.php | 15 ++++++++++++++-
 wp-includes/version.php    |  2 +-
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/wp-admin/includes/post.php b/wp-admin/includes/post.php
index 142752dbc8..ec96749f46 100644
--- a/wp-admin/includes/post.php
+++ b/wp-admin/includes/post.php
@@ -177,6 +177,7 @@ function _wp_translate_postdata( $update = false, $post_data = null ) {
  * @return int Post ID.
  */
 function edit_post( $post_data = null ) {
+	global $wpdb;
 
 	if ( empty($post_data) )
 		$post_data = &$_POST;
@@ -317,7 +318,19 @@ function edit_post( $post_data = null ) {
 
 	update_post_meta( $post_ID, '_edit_last', get_current_user_id() );
 
-	wp_update_post( $post_data );
+	$success = wp_update_post( $post_data );
+	// If the save failed, see if we can sanity check the main fields and try again
+	if ( ! $success && is_callable( array( $wpdb, 'strip_invalid_text_for_column' ) ) ) {
+		$fields = array( 'post_title', 'post_content', 'post_excerpt' );
+
+		foreach( $fields as $field ) {
+			if ( isset( $post_data[ $field ] ) ) {
+				$post_data[ $field ] = $wpdb->strip_invalid_text_for_column( $wpdb->posts, $field, $post_data[ $field ] );
+			}
+		}
+
+		wp_update_post( $post_data );
+	}
 
 	// Now that we have an ID we can fix any attachment anchor hrefs
 	_fix_attachment_links( $post_ID );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index d90898c479..3280838ad4 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-alpha-30345';
+$wp_version = '4.1-alpha-30346';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.