[h-e-w] ishl.el does not work in version 22.1

[Frosch, Johan W (Hans)]

I have been using emacs (version 21.3 and earlier) as my favorite editor
for many years (on Windows and Solaris/Unix/Linux).

Recently, when I saw that the long awaited version 22.1 was released, I
decided to upgrade.
And so far I am quite pleased with its enhancements.

There is however one peeve that I like to report and hopefully get a
solution for.

Over the years I have been using Bob Glickstein's ishl.el (1997 ---extra
isearch highlighting), and have gotten quite used (and attached) to it. 

It seems to be doing nothing at all however in version 22.1
Also, it does not seem to make any difference if I comment out the lines
in my .emacs or not. (Byte-compiling with v22.1 also did not make any
difference.)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; `ishl-mode' is a mode that does additional highlighting during
incremental searches.
(require 'ishl)
(ishl-mode 1)
(setq-default ishl-cleanup nil)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

I 'googled' for a newer version of ishl.el but there does not seem to be
a newer than I have.