Re: The function prin1 prints "..." at the end of a long list.

[John Paul Wallington]

> The  function  prin1  sometimes  truncates  the end  of  a  long  list
> (auto-mode-alist is a good example of such list):
[...]
> Now,  more fun  :  I launch  another  Emacs session,  and  in the  new
> session, everything works as expected : C-h v auto-mode-alist shows me
> the full value,  and so on. The problem seems  to happen randomly, but
> when it happens  once, then, it will continue to  happen until the end
> of the session.
> 
> I have the same problem on a Solaris box and a Linux (Debian 3.0) box,
> both with Emacs 21.2. 

What is the value of `print-length' in the misbehaving session?  Maybe
some code set rather than bound it to a non-nil value.