add: var existingUser = parent.users[nick]; 
context: function CIRCUser (parent, nick, name, host){    var properNick = nick;    nick = nick.toLowerCase();        var existingUser = parent.users[nick];    if (typeof existingUser == "object")    {        if (name) existingUser.name = name;        if (host) existingUser.host = host;        return existingUser;    }    this.parent = parent;    this.nick = nick;    this.properNick = properNick;    this.name = name;    this.host = host;    parent.users[nick] = this;    return this;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/0d1a83beabf85d1bbf715013aa931f56c2bfb948/irc.js/buggy/extensions/irc/js/lib/irc.js