"Essential lisp utilities": where are they?

Hello,

I recall seeing a library of "essential lisp utilities", but I just
spent a better part of an hour going through cliki, my bookmarks,
installed libraries, and the web, and other than suspects such as
trivial-features, and cannot find it.

The reason is that I just wrote a little macro with-dir
(defmacro with-dir ((new-dir) &body body)
`(let ((old-dir (ext:cd)))
;; (format t "will move to ~a~%" ,new-dir)
(ext:cd ,new-dir)
;; (format t "current dir ~a~%" (ext:cd))
,@body
(ext:cd old-dir)))

that I use on clisp(on cygwin+windows) but I suspect a more robust and
universal one exists somewhere, perhaps in the "essential lisp
utilities".

So, where is that beast?

Thanks,

Mirko
.

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