I fixed the bug found in PFC 1.1 through 1.3 where the tab key no longer auto-completes the nickname. The bug is reported here: http://www.phpfreechat.net/forum/viewtopic.php?id=3085
In file data/public/js/pfcclient.js find this text:
var n_list = this.getChanMeta(tabid, 'users')['nick'];
Replace with this:
var n_list = this.getChanMeta(tabid, 'users').get('nick');
I hope you add this to SVN, kerphi