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: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/b8511d02e8bcb51d475c1c9a02b7a6f680ba5830/irc.js/clean/extensions/irc/js/lib/irc.js