Automattic / jetpack

		}

		if ( $bad ) {

			$bad = array_keys( $bad );

			if ( count( $bad ) > 1 ) {

				$bad[ count( $bad ) - 1 ] = 'or ' . $bad[ count( $bad ) - 1 ];

			}

			throw new \RuntimeException( 'Filename may not contain ' . implode( count( $bad ) > 2 ? ', ' : ' ', $bad ) . '.' );

		}

					},

					array_keys( $types )

				);

				if ( count( $list ) > 1 ) {

					$list[ count( $list ) - 1 ] = 'or ' . $list[ count( $list ) - 1 ];

				}

				$messages[] = array( 'error', 'Type must be must be ' . implode( count( $list ) > 2 ? ', ' : ' ', $list ) . '.', $diagnostics['lines']['Type'] );

			}

		}