[rt-users] SpamAssassin filter for RT 3.0.10

[Robert Spier]

> There was another tricky bug:  apparently SpamAssassin munges the $_
> global variable when a message rings the spam bell, such that its value
> in the Gateway function's loop around @RT::MailPlugins gets unset.  This
> clears the plugin entry so it breaks on the next incoming email.  I know
> the functions/operators that set $_ are supposed have local effects but
> apparently something doesn't.  Switching to an explicit loop variable
> fixed the symptom, so that patch is included.

Here's an example to share a legit use of local:

    $_=3;
    {
     local $_;
     something_that_modifies_dollar_underbar();
    }
    # $_ == 3