I'd prefer something like transaction $dbh, {

I would prefer that too! But Perl 5's prototypes don't allow that syntax. It requires the "sub" keyword then. I'm not sure if I want that.

Also, an additional idea would be to catch die's in the handler and make them execute rollback.

Already does that, and has always done that :)

Juerd # { site => 'juerd.nl', plp_site => 'plp.juerd.nl', do_not_use => 'spamtrap' }