To allow use with username Hebrew add this filter in functions.php file
add_filter( 'sanitize_user', 'sanitize_user_with_hebrew', 10, 3 );
function sanitize_user_with_hebrew( $username, $raw_username, $strict ) {
$username = $raw_username;
$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 );
/**
* Filter a sanitized username string.
*
* @since 2.0.1
*
* @param string $username Sanitized username.
* @param string $raw_username The username prior to sanitization.
* @param bool $strict Whether to limit the sanitization to specific characters. Default false.
*/
return $username;
}
