pre_get_product_search_form │ action-hook │ WC 1.0

Usage

add_action( 'pre_get_product_search_form', 'wp_kama_pre_get_product_search_form_action' );

/**
 * Function for `pre_get_product_search_form` action-hook.
 * 
 * @return void
 */
function wp_kama_pre_get_product_search_form_action(){

	// action...
}

Where the hook is called

do_action( 'pre_get_product_search_form' );

Where the hook is used in WooCommerce