bug#3926: 23.1.50; Follow-mode makes Emacs server unavailable

[Teemu Likonen]

When follow-mode is activated Emacs server is no longer available for
clients. The server has to be restarted. To reproduce:

 1. Start Emacs:
    
        emacs -Q -f server-start -f follow-mode

    You probably need to close other Emacs servers first.

 2. Try to start a client session:

        emacsclient -c -n

The emacsclient command just waits and waits but nothing happens. The
server must be restarted (M-x server-start) before it starts accepting
clients again.


In GNU Emacs 23.1.50.2 (i686-pc-linux-gnu, GTK+ Version 2.12.12)
 of 2009-07-25 on mithlond
Windowing system distributor `The X.Org Foundation', version 11.0.10402000
configured using `configure  '--prefix=/home/dtw/local''