bug#21723: 24.5; Bug in `server-kill-emacs-query-function'

[Eli Zaretskii]

> From: Eli Barzilay <eli@barzilay.org>
> Date: Wed, 21 Oct 2015 04:52:01 -0400
> 
> The code in `server-kill-emacs-query-function' (in server.el) has this
> in an `or':
> 
>     (let (live-client)
>       (dolist (proc server-clients)
>         (when (memq t (mapcar 'buffer-live-p (process-get
>                                               proc 'buffers)))
>           (setq live-client t)))
>       live-client)
> 
> IIUC, this looks for a live client, and if there is one, the t result
> means that the yes-or-no-p question in the end will *not* get asked.
> I verified this by:
> 
>   * Starting emacs -Q and in it start the server
> 
>   * Run emacsclient on a random file
> 
>   * Now, C-x C-c exits without asking any questions.
> 
> It seems to me like that condition is reversed, an the last line
> should instead be: (not live-client)

Ouch!  This bug was there for almost 10 years, since the simple loop
was rewritten as dolist, and the negation of the result was dropped in
the process.

Should be fixed now, thanks.