Ticket #18713: 18713.diff

wp-includes/post.php

@@ -2435 +2435 @@
                 $previous_status = 'new';
         }
 
-        if ( ('' == $post_content) && ('' == $post_title) && ('' == $post_excerpt) && ('attachment' != $post_type) ) {
+        $empty_content = '' == $post_content && '' == $post_title && '' == $post_excerpt && 'attachment' != $post_type;
+        if ( apply_filters( 'wp_insert_post_empty_content', $empty_content, $postarr ) ) {
                 if ( $wp_error )
                         return new WP_Error('empty_content', __('Content, title, and excerpt are empty.'));
                 else