Re: How to disable warnings/questions when using desktop-save-mode?

[Kevin Rodgers]

On 5/23/12 4:21 AM, Marius Hofert wrote:
> 1) I have enabled desktop-save mode (with (desktop-save-mode 1)) since I find 
> this
> quite useful. I recently started to use different instances of Emacs (Emacs 24
> GTK Snapshot version on Xubuntu 12.04). Every time I open another instance of
> Emacs, I receive "...Warning: desktop file appears to be in
> use by PID ... Use it anyway? (y or n)". How can I tell Emacs to not ask me but
> always choose y (= yes) here automatically? [I tried (setq desktop-save t) but
> I still obtained the warning.]

(setq desktop-load-locked-desktop t)

> 2) A similar problem appears when a new instance is closed and thus writes to 
> the
> desktop file. When closing an older instance afterwards one then obtains
> "... Desktop file is more recent than the one loaded. Save anyway?". How can I
> tell Emacs to not ask me but choose y (= yes) automatically?
>
> Maybe 2) is solved by choosing "no" in 1) [which I guess is also fine in most 
> cases].

I think you need to make sure each instance has its own value of desktop
base-file-name and/or desktop-base-lock-name, effectively defeating the
locking mechanism altogether.  You could do that by appending the PID
returned by (emacs-pid) to those variables in your ~/.emacs:

(setq desktop-base-lock-name
      (convert-standard-filename (format ".emacs.desktop.lock-%d" (emacs-pid))))

or:

(eval-after-load 'desktop
  '(setq desktop-base-lock-name
         (format "%s-%d" desktop-base-lock-name (emacs-pid))))

and probably the same for desktop-base-lock-name.

--
Kevin Rodgers
Denver, Colorado, USA