Ticket #30261: 30261.12.diff

wp-includes/taxonomy.php

@@ -4262 +4262 @@
                 return $term_id;
         }
 
+        // Check if the term has not already been split by a plugin hooked to 'split_shared_term'
+        $check_term_id = $wpdb->get_var( $wpdb->prepare( "SELECT term_id FROM $wpdb->term_taxonomy WHERE term_taxonomy_id = %d", $term_taxonomy_id ) );
+        if ( $check_term_id != $term_id ) {
+                return $check_term_id;
+        }
+
         // Pull up data about the currently shared slug, which we'll use to populate the new one.
         if ( empty( $shared_term ) ) {
                 $shared_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.* FROM $wpdb->terms t WHERE t.term_id = %d", $term_id ) );