It would really be cool if PHPed autocompleted and/or showed a file match list when you are typing a local url. Like if I started typing <img src="/images/sp it could show a list of images that most closely matches what i've typed so far (like spacer.gif and spaghetti.jpg) etc..

You could also have that feature in other lang options like PHP (my example was HTML) .. the feature would kick in when you are typing a require, include or a function that required a filename ..