Automattic / jetpack

	$height = intval( $attr['height'] );

	// Support w and h argument as fallback.

	if ( empty( $width ) && isset( $args['w'] ) ) {

		$width = intval( $args['w'] );

		if ( empty( $height ) && ! isset( $args['h'] ) ) {

			// The case where w=300 is specified without h=200, otherwise $height

			// will always equal the default of 300, no matter what w was set to.

			$height = round( ( $width / 640 ) * 360 );

		}

	}

	if ( empty( $height ) && isset( $args['h'] ) ) {

		$height = (int) $args['h'];

		}

	}

	if ( empty( $height ) && isset( $args['h'] ) ) {

		$height = (int) $args['h'];

		if ( ! isset( $args['w'] ) ) {

			$width = round( ( $height / 360 ) * 640 );

		}

	}

	if ( ! $width && ! empty( $content_width ) ) {

		$width = absint( $content_width );