Username with quote can't login

Hi ?? Could I ask you an advice please?

I need to permit users to login with their stardard username, but that it could include a single quote. Currently I’ve added a custom filter that permits them to register with this special character in the username, but currently they aren’t able to login with their username if it includes a single quote..

function custom_sanitize_user( $username, $strict = false ) {
	$username = wp_strip_all_tags( $username );
	//$username = remove_accents( $username );
	// Kill octets
	$username = preg_replace( '|%([a-fA-F0-9][a-fA-F0-9])|', '', $username );
	$username = preg_replace( '/&.+?;/', '', $username ); // Kill entities

	// If strict, reduce to ASCII for max portability.
	//if ( $strict )
	//    $username = preg_replace( '|[^a-z0-9 _.\-@]|i', '', $username );

	$username = trim( $username );
	// Consolidate contiguous whitespace
	$username = preg_replace( '|\s+|', ' ', $username );

	return $username;
}
add_filter('sanitize_user', 'custom_sanitize_user', 999, 2);

Do you have any idea how can I do it please?

Best regards
– Chris