[OS X Emacs] gnus confuses undo?

[David Reitter]

On 27 Jan 2009, at 06:44, Art Werschulz wrote:
>
> After running gnus, C-x u (bound to advertised-undo) quits working.   
> I get the following error msg in the *Backtrace* buffer:
>
> Debugger entered--Lisp error: (error "Nothing further to undo")

Maybe buffer-undo-list is bound to t, or recording undo is otherwise  
disabled.

> I also get the same msg in the *Backtrace* buffer when I enter a  
> command of the form C-_ x, where the "x" can be any normal character  
> appearing as part of a help command keystroke.  Note that I have
> 	(define-key global-map "\^_" 'help-command)

C-_ is bound to undo.  It i not a prefix key.

>


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