Re: describe-key fails

[Richard Stallman]

    I have been quite precise.  I run "emacs -Q" to start Emacs without
    customisation, then type C-h k x and see the error I've indicated.

    I am running the CVS trunk.

It doesn't fail for me.

I had one uninstalled change in help-fns.el.  I don't see why it would
affect this case, but perhaps it does.  I installed that change.  You
can see if it makes the bug go away.  But if it doesn't, all I can
suggest is to try debugging it (since you can see it fail).