Re: [Emacs-diffs] trunk r116304: * lisp/desktop.el (desktop-read): Claim the lock when the owner is not the current process.

[Juri Linkov <juri@jurta.org>]

>> Maybe we need a separate question in addition to the existing question
>>
>> 1. "Warning: desktop file appears to be in use by PID %s.
>>     Using it may cause conflicts.  Use it anyway? "
>>
>> something like
>>
>> 2. "Claim the lock from PID %s to take the ownership of the desktop file? "
>
> Something like that, but it needs to be possible to configure it to
> not ask/not claim, if that's what the user wants.

Then instead of asking a question we could add two new values
to `desktop-load-locked-desktop'

   ask-and-lock  -- ask the user and lock the desktop.
   load-and-lock -- load and lock anyway.

with the default to `ask-and-lock'.  Whereas the existing

   t    -- load anyway.
   ask  -- ask the user.

will load without locking.

> As an example, in my .emacs, I set desktop-load-locked-desktop to nil,
> and then I add code to desktop-not-loaded-hook that only steals the
> lock if the PID of the old lock does not match a running Emacs
> instance; if the old Emacs is still running I only throw a warning.

I guess your code to detect a running Emacs instance is not too reliable
to include to desktop.el?