bbp_is_single_user_replies()

function bbp_is_single_user_replies() {
	global $wp_query;

	// Assume false
	$retval = false;

	// Check query
	if ( !empty( $wp_query->bbp_is_single_user_replies ) && ( true === $wp_query->bbp_is_single_user_replies ) )
		$retval = true;

	return (bool) apply_filters( 'bbp_is_single_user_replies', $retval );
}