[h-e-w] Desktop lock problems - was: Alt-tab does not switch tasks

[Raynor, Bill]

Ok, I'll work on that today. The process id in the lock file matches
that returned by pslist for emacs (pslist |grep emacs). I'm am leaving
on a trip later so my communications will be irregular. 

Thanks

Bill Raynor
Innovation Design & Testing
(920) 721-5973
Email: address@hidden


> -----Original Message-----
> From: Eli Zaretskii [mailto:address@hidden
> Sent: Friday, August 01, 2008 5:38 AM
> To: Raynor, Bill
> Cc: address@hidden
> Subject: Re: [h-e-w] Alt-tab does not switch tasks
> 
> > Date: Thu, 31 Jul 2008 14:48:25 -0500
> > From: "Raynor, Bill" <address@hidden>
> > cc: address@hidden
> >
> > Yes.
> >
> > Commenting out various pieces of my .emacs file narrows the problem
to
> > the (desktop-save-mode 1) line. If that is commented out the PID
problem
> > goes away. If I leave it in, the problem occurs.
> 
> Yes, but removing that line means you cannot preserve and restore your
> session, so this is not a solution.
> 
> I cannot reproduce your problem using today's CVS Emacs on my Windows
> XP machine.  So I describe below how does this feature works, and I'm
> asking you to look which parts of the description below don't work on
> your system.
> 
> When the Desktop package is loaded, and Emacs visits the
> `.emacs.desktop' file at startup, it places in the directory of
> `.emacs.desktop' a file called `.emacs.desktop.lock'.  In that file,
> you should see a single number: the PID of the running Emacs which is
> using the `.emacs.desktop' file.
> 
> When Emacs exits, it removes the `.emacs.desktop.lock' file as part of
> its shutdown process.  This works because desktop.el has this line:
> 
>   (add-hook 'kill-emacs-hook 'desktop-kill)
> 
> and `desktop-kill' does this as its last line:
> 
>   (when (eq (emacs-pid) (desktop-owner)) (desktop-release-lock))
> 
> Here's the function `desktop-release-lock':
> 
>   (defun desktop-release-lock (&optional dirname)
>     "Remove the lock file for the desktop in DIRNAME.
>   DIRNAME omitted or nil means use `desktop-dirname'."
>     (let ((file (desktop-full-lock-name dirname)))
>       (when (file-exists-p file) (delete-file file))))
> 
> As you see, it should delete the `.emacs.desktop.lock' file.
> 
> Can you see which parts of this machinery don't work on your system,
> and why?  For starters, is the PID recorded in `.emacs.desktop.lock'
> match the PID of Emacs that is running?
> 



 
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