add: else hostmask = hostmask.replace(/[^.]+$/, "*"); 
context: function usr_banmask(){    var hostmask = this.host;    if (!/^\d+\.\d+\.\d+\.\d+$/.test(hostmask))        hostmask = hostmask.replace(/^[^.]+/, "*");    return "*!" + this.name + "@" + hostmask;}
meta: 1622	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1622/6d5cc6237b00b6a152a927bbe87d06a93a84f508/irc.js/clean/js/lib/irc.js