Remove underscore from username

Hello,

I was wondering if it's possible to alter the default username generating function

PHP:

generateLogin()

without altering the core User.php file.

Basically, I'm trying to match how usernames were generated in our v3 setup,where a user's first name and last name were combined automatically, without an underscore.

Is there anyway to override

PHP:

$try[] = $fn.'_'.$ln;

in User.php without editing it directly?

Thanks,
Scott

Not likely... so you might have to make that one change in the core file.

I figured as much, but there people here who know a lot more than I do, so I thought I'd check. Thanks.