WordPress at a glance
filter is not described

woocommerce_get_username_from_email filter-hook . WC 1.0

If no user found, check if it login is email and lookup user based on email.

Usage

add_filter( 'woocommerce_get_username_from_email', 'filter_function_name_1739' );
function filter_function_name_1739( $true ){
	// filter...

	return $true;
}
$true
-

Where the hook is called

WC_Shortcode_My_Account::retrieve_password()
woocommerce_get_username_from_email
woocommerce/includes/shortcodes/class-wc-shortcode-my-account.php 290
if ( ! $user_data && is_email( $login ) && apply_filters( 'woocommerce_get_username_from_email', true ) ) {

Where in WP core the hook is used WooCommerce

Usage not found.