In my original code, the regular expressions replace not only the function name, but parts of the literal in the function's code too.
Namely, in each of these functions...
function Y(W){return' Y'+(W?('='+String.fromCharCode(34)+W+String.fromCharCode(34)):'')};
function X(W){return'<X'+(W?W:'')+'>'};
function Z(W){return'<Z'+(W?W:'')+'>'+this+'</'+'Z>'};
function G(W){return'<G'+(W?W:'')+'>'+this.join('<G'+(W?W:'')+'>')};
function R(W){return'<R'+(W?W:'')+'>'+this.join('</'+'R><R'+(W?W:'')+'>')+'</'+'R>'};
... it is important to replace not only the function name in the header, but also in the string literal returned by the function. By using the .toString() method of the "template" function, the word "function" is returned too. This is critical for writing a viable function definition onto the appropriate object (be it window, String.prototype or Array.prototype).
Incidentally, you also dropped the code that writes my copyright message into the status line!
