woocommerce_is_email_editor_page │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_is_email_editor_page', 'wp_kama_woocommerce_is_email_editor_page_filter' );

/**
 * Function for `woocommerce_is_email_editor_page` filter-hook.
 * 
 * @param  $false 
 *
 * @return 
 */
function wp_kama_woocommerce_is_email_editor_page_filter( $false ){

	// filter...
	return $false;
}

$false

-

Where the hook is called

$is_editor_page = apply_filters( 'woocommerce_is_email_editor_page', false );

Where the hook is used in WooCommerce

add_filter( 'woocommerce_is_email_editor_page', array( $this, 'is_editor_page' ), 10, 1 );