username invalid

Hi, I running WP 2.0.2

I want to use username includes ‘-‘, but this username is invalid.

sanitize_user in wp-include/functions-formatting.php return invalid.

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

‘.-@’ in pattern means form ‘.’ to ‘@’, not includes ‘-‘.

And WP 2.0 code is

function sanitize_user( $username ) {
return preg_replace(‘|a-z0-9 _.-|i’, ”, $username);
}

WP 2.0.2 code like WP 2.0 code add ‘@’.
‘-‘ doesn’t mean character range, means ‘\-‘ ?

Bad English, Sorry.