--- Glib.pm	23 May 2008 09:49:02 +1000	1.121
+++ Glib.pm	20 Jun 2008 17:54:15 +1000	
@@ -73,13 +73,16 @@
 
 use overload
    'bool' => \&bool,
-   '+'    => \&union,     '|'    => \&union,
-   '-'    => \&sub,
+   '+'    => \&union,     '+='   => \&union,
+   '|'    => \&union,     '|='   => \&union,
+   '-'    => \&sub,       '-='   => \&sub,
+   '*'    => \&intersect, '*='   => \&intersect,
+   '&'    => \&intersect, '&='   => \&intersect,
+   '/'    => \&xor,       '/='   => \&xor,
+   '^'    => \&xor,       '^='   => \&xor,
    '>='   => \&ge,
    '=='   => \&eq,        'eq'   => \&eq,
    '!='   => \&ne,        'ne'   => \&ne,
-   '*'    => \&intersect, '&'    => \&intersect,
-   '/'    => \&xor,       '^'    => \&xor,
    '@{}'  => \&as_arrayref,
    '""'   => sub { "[ @{$_[0]} ]" },
    fallback => 1;