Re: 23.0.60; Emacs should survive a lost X connection

[Dan Nicolaescu]

Stefan Monnier <address@hidden> writes:

  > >> No, the crashes are gone.  But the server does not seem to know that the
  > >> clients have gone, it gives a warning when trying to exit because it
  > >> thinks that clients are still connected.
  > >> 
  > >> I do not understand.  When you say "server" do you mean "X server"?
  > 
  > > No, I mean the emacs server, i.e. the one started by M-x server-start.
  > 
  > >> Do you mean that it doesn't notice that it has been disconnected
  > >> from Emacs?
  > 
  > > No, the emacs server keeps track of the number of emacsclients that are
  > > still connected, when that number is > 0 and you are doing C-x C-c it
  > > will warn that emacsclients are still connected 
  > > (see server-kill-emacs-query-function)
  > 
  > > In the case described here, there are no emacsclients that are still
  > > connected (they have died when X has died, or have been killed with
  > > xkill), but the server thinks otherwise.
  > 
  > Actually, server.el does not keep track of a count of client, it keeps
  > track of actual clients directly, so we should be able to check
  > the client's liveness and discard the dead ones.
  > 
  > I lost the beginning of this thread, could you give a recipe and
  > description for this problem?

Sure:

emacs -Q -nw -f server-start

emacsclient -c -d $DISPLAY&

xkill 
the emacsclient X11 frame

then C-x C-c in the emacs -nw frame will warn about clients still being
connected.

Same thing when instead of using xkill, kill X11.