You might find the :make feature of vim very useful: You can set makeprg to "perl\ -cw\ %" and use afterwards :make to check the program. This aproach offers you some nice features:

• It's easier to type
• You get the error-messages in a special buffer and can step through it. Read about this feature in :help quickfix

Another real good feature, btw :)
--
use signature; signature(" So long\nAlfie");