Ticket #6668: 6668.01.patch

src/bp-activity/bp-activity-functions.php

@@ -256 +256 @@
                 }
         }
 
-        return $mentionname;
+        /**
+         * Filters the user "mentionname" used for activity @-mentions.
+         *
+         * @since 2.4.0
+         */
+        return apply_filters( 'bp_activity_get_user_mentionname', $mentionname );
 }
 
 /**