[PATCH] Include a bug from Nix we dropped on the floor

[Nix]

On 24 Nov 2006, Aidan Kehoe stated:
> Was looking through Gmane, and came across this. Sorry about the delay, Nix. 
> See the discussion here: http://thread.gmane.org/gmane.lisp.emacs-cl/128 for
> more info.

Wow. I'd quite forgotten about that. Well-spotted :)

-- 
`The main high-level difference between Emacs and (say) UNIX, Windows,
 or BeOS... is that Emacs boots quicker.' --- PdS