---- On Mon, 20 Feb 2023 06:24:52 -0500  Ihor Radchenko  wrote --- 

 > Why not simply doing the `should' test when the
 > `test-ob-shell/uuid-regex' match fails? Instead of returning `t'. Then,
 > we will not need to use advise.

Great point. I had originally used advice to avoid a loop.  However, when it became apparent that the loop was necessary, I overlooked that the advice was no longer needed.

I've rewritten the test and updated the patch.