Ticket #21093: wp_unique_term_slug.patch

wordpress/wp-includes/taxonomy.php

@@ -2241 +2241 @@
 function wp_unique_term_slug($slug, $term) {
         global $wpdb;
 
-        if ( ! term_exists( $slug ) )
-                return $slug;
+        if ( ! term_exists( $slug ) && ! apply_filters( 'wp_unique_is_bad_term_slug', false, $slug, $term ) )
+                return apply_filters( 'wp_unique_term_slug', $slug, $term );
 
         // If the taxonomy supports hierarchy and the term has a parent, make the slug unique
         // by incorporating parent slugs.
-        if ( is_taxonomy_hierarchical($term->taxonomy) && !empty($term->parent) ) {
+        if ( is_taxonomy_hierarchical($term->taxonomy) && !empty($term->parent) || apply_filters( 'wp_unique_is_bad_term_slug', false, $slug, $term ) ) {
                 $the_parent = $term->parent;
                 while ( ! empty($the_parent) ) {
                         $parent_term = get_term($the_parent, $term->taxonomy);
@@ -2254 +2254 @@
                                 break;
                         $slug .= '-' . $parent_term->slug;
                         if ( ! term_exists( $slug ) )
-                                return $slug;
+                                return apply_filters( 'wp_unique_term_slug', $slug, $term );
 
                         if ( empty($parent_term->parent) )
                                 break;
@@ -2268 +2268 @@
         else
                 $query = $wpdb->prepare( "SELECT slug FROM $wpdb->terms WHERE slug = %s", $slug );
 
-        if ( $wpdb->get_var( $query ) ) {
+        if ( $wpdb->get_var( $query ) || apply_filters( 'wp_unique_is_bad_term_slug', false, $slug, $term ) ) {
                 $num = 2;
                 do {
                         $alt_slug = $slug . "-$num";
@@ -2278 +2278 @@
                 $slug = $alt_slug;
         }
 
-        return $slug;
+        return apply_filters( 'wp_unique_term_slug', $slug, $term );
 }
 
 /**