* emacs.c (standard_args): Add --daemon.

(main): Disconnect from the terminal when --daemon is passed.
(is_daemon): New variable.
(Fdaemonp): New function.
(syms_of_emacs): Defsubr it.

* startup.el (command-line): Start the server when in daemon mode.

* cmdargs.texi (Initial Options): Document --daemon.

1 files changed, 5 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 13685fdcb7a..e8bfb7d1754 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -130,6 +130,11 @@ Now, the default behavior is to open a new Emacs frame by default.
 Use the -c option to get the old behavior of opening files in the
 currently selected Emacs frame.
 
+*** Emacs can now start in background, as a daemon when using the
+--daemon command line argument.  It disconnects from the terminal and
+starts the server.  Clients can connect and create graphical or
+terminal frames using emacsclient.
+
 *** The new command close-display-connection closes a connection to a
 remote display.