gistfile1.txt

	var fun = String(fnc);

		//Capture function args and body into capture groups
		var argsBody = fun.match(
			/^function[^(]*\(([^)]*)\)\s*{([\s\S]*)}$/
		);

		//Get argument names
		var argNames = argsBody[1].split(/\s*,\s*/g);

		//Function body
		var body = argsBody[2];

		//Replace arguments with provided values
		var argumentValues = Array.prototype.slice.call(arguments, 1);
		for(var i = 0; i < argumentValues.length; i++) {
			body = body.replace(new RegExp(argNames[i], 'g'), argumentValues[i]);
		}

		var remainingArguments = argNames.slice(i);
		return new Function(remainingArguments.join(','), body);