bheadrick on "[Plugin: WooCommerce - excelling eCommerce] [Plugin: WooCommerce] Editing Breadcrumbs for Single Product Pages"

same code is used for both.

sincle-product.php shows

/**
		 * woocommerce_before_main_content hook
		 *
		 * @hooked woocommerce_output_content_wrapper - 10 (outputs opening divs for the content)
		 * @hooked woocommerce_breadcrumb - 20
		 */

in woocommerce-hooks.php

add_action( 'woocommerce_before_main_content', 'woocommerce_breadcrumb', 20, 0 );

in woocommerce-template.php

function woocommerce_breadcrumb( $args = array() ) {

		$defaults = array(
			'delimiter'  => ' › ',
			'wrap_before'  => '<div id="breadcrumb" itemprop="breadcrumb">',
			'wrap_after' => '</div>',
			'before'   => '',
			'after'   => '',
			'home'    => null
		);

		$args = wp_parse_args( $args, $defaults  );

		woocommerce_get_template( 'shop/breadcrumb.php', $args );
	}