emacs 21.2 and lisp interaction mode

[Mordechai T. Abzug]

I recently upgraded from emacs 20.7 to emacs 21.2.  When I start 21.2
using "emacs -nw", I get the error "Lisp nesting exceeds
max-lisp-eval-depth".  More worrisome, if I start it with a file
(ie. "emacs -nw file"), the error occurs before the file is loaded,
and the file doesn't load.

After some debugging, it looks like commenting out the following entry
in my .emacs makes the problem go away:

(add-hook 'emacs-lisp-mode-hook 'lisp-interaction-mode)

Again, this wasn't a problem under 20.7.  Apparently, someone broke
backwards compatibility.

- Morty