Ticket #5305: wp-includes_post.php.diff

wp-includes/post.php

@@ -3672 +3672 @@
         global $wpdb, $wp_rewrite;
 
         $original_slug = $slug;
+        
+        // if the name is numeric, then prefix it so that the post name will work with all permalink structures
+        // https://core.trac.wordpress.org/ticket/5305
+        if ( is_numeric( $slug ) ) {
+                $slug_prefix = apply_filters( 'wp_unique_post_slug_numeric_slug_prefix', 'number-', $slug, $post_ID, $post_status, $post_type, $post_parent );
+                $slug = $slug_prefix . $slug;
+        }
 
         $feeds = $wp_rewrite->feeds;
         if ( ! is_array( $feeds ) )