bug#68799: 30.0.50; emacs --fg-daemon fails silently if server-start fails

[Eli Zaretskii]

> From: Spencer Baugh <sbaugh@janestreet.com>
> Cc: 68799@debbugs.gnu.org,  monnier@iro.umontreal.ca,  jasonr@gnu.org
> Date: Tue, 13 Feb 2024 15:20:21 -0500
> 
> To be clear, the patch I posted which checks DAEMON_RUNNING *does* solve
> that.
> 
> $ ./src/emacs -Q --fg-daemon=/tmp/foo
> Starting Emacs daemon.
> ‘/tmp’ is not a safe directory because it is not owned by you (owner = root 
> (0))
> $ 
> 
> (which previously would have hung)
> 
> The issue now is solely that the printed error message is maybe not
> informative enough.
> 
> So how about the following diff, which changes the output to:
> 
> $ ./src/emacs -Q --fg-daemon=/tmp/foo
> Starting Emacs daemon.
> Unable to start daemon: ‘/tmp’ is not a safe directory because it is not 
> owned by you (owner = root (0))

That's an improvement, but maybe it will be even better if you append
"; exiting" at the end of the message?