bug#51360: 29.0.50; variable `server-name' initialized too late for use in init file

bug#51360: 29.0.50; variable `server-name' initialized too late for use in init file

[Gregor Zattler]

Dear emacs developers, if emacs is started as a named daemon
like this: `emacs --damon=foo' or like this:
`emacsclient -a "" -s foo [...]' the variable `server-name'
is initialized with the name "foo" but too late to be used
in init.el:



Warning (initialization): An error occurred while loading ´/home/grfz/.config/emacs/init.el´:

Symbol's value as variable is void: server-name



It would be helpful if `server-name' would be initialized
early enough to be used in init.el in order to enable
conditional configuration of the server, depending on it's
name.



Thanks for your attention, Gregor

bug#51360: 29.0.50; variable `server-name' initialized too late for use in init file

[Stefan Kangas]

Gregor Zattler <grfz@gmx.de> writes:

> Warning (initialization): An error occurred while loading ´/home/grfz/.config/emacs/init.el´:
>
> Symbol's value as variable is void: server-name
>
> It would be helpful if `server-name' would be initialized
> early enough to be used in init.el in order to enable
> conditional configuration of the server, depending on it's
> name.

Doesn't this just depend on when you call `server-start'?

Do you have a recipe for reproducing this?

bug#51360: 29.0.50; variable `server-name' initialized too late for use in init file

[Gregor Zattler]

Hi Stefan, emacs devs,
* Stefan Kangas <stefan@marxist.se> [2021-10-24; 05:46]:
> Gregor Zattler <grfz@gmx.de> writes:
>
>> Warning (initialization): An error occurred while loading ´/home/grfz/.config/emacs/init.el´:
>>
>> Symbol's value as variable is void: server-name
>>
>> It would be helpful if `server-name' would be initialized
>> early enough to be used in init.el in order to enable
>> conditional configuration of the server, depending on it's
>> name.
>
> Doesn't this just depend on when you call `server-start'?

When emacs is started with emacs --daemon=foo (or
emacsclinet -a "" -s foo [...]) one does not use
`server-start'.

> Do you have a recipe for reproducing this?

Have

(when (equal server-name "foo") (message "My name is foo!"))

in .emacs and start emacs with   emacs --daemon=foo



Ciao,
-- 
Gregor

bug#51360: 29.0.50; variable `server-name' initialized too late for use in init file

[Gregory Heytings]

[-- Attachment #1: Type: text/plain, Size: 283 bytes --]


>
> Warning (initialization): An error occurred while loading 
> ´/home/grfz/.config/emacs/init.el´:
>
> Symbol's value as variable is void: server-name
>

You should (require 'server) before referring to server-name.  None of the 
defcustoms in server.el are autoloaded.

bug#51360: 29.0.50; variable `server-name' initialized too late for use in init file

[Eli Zaretskii]

> From: Gregor Zattler <grfz@gmx.de>
> Date: Sun, 24 Oct 2021 17:34:19 +0200
> Cc: 51360@debbugs.gnu.org
> 
> When emacs is started with emacs --daemon=foo (or
> emacsclinet -a "" -s foo [...]) one does not use
> `server-start'.
> 
> > Do you have a recipe for reproducing this?
> 
> Have
> 
> (when (equal server-name "foo") (message "My name is foo!"))
> 
> in .emacs and start emacs with   emacs --daemon=foo

Whatever you do that you need server-name for, can't you do that in
emacs-startup-hook?  AFAIR, that gets called after the daemon already
finished its initialization and provided its name to Emacs, so
server-name should be already populated.

bug#51360: 29.0.50; variable `server-name' initialized too late for use in init file

[Gregor Zattler]

Hi Gregory, emacs devs,
* Gregory Heytings <gregory@heytings.org> [2021-10-24; 15:45]:
>> Warning (initialization): An error occurred while loading 
>> ´/home/grfz/.config/emacs/init.el´:
>>
>> Symbol's value as variable is void: server-name
>
> You should (require 'server) before referring to server-name.  None of the 
> defcustoms in server.el are autoloaded.

thanks.  Requiring server prevents this error, but `server-name'
is not set to the command line value, though:

~$ cat ~/.emacs
(require 'server)
(when (equal server-name "foo") (setq greeting "My name is foo!"))
~$ emacsclient -a "" -s foo --eval '(message greeting)'
emacsclient: Should XDG_RUNTIME_DIR='/run/user/1000' be in the environment?
emacsclient: (Be careful: XDG_RUNTIME_DIR is security-related.)
emacsclient: can't find socket; have you started the server?
emacsclient: To start the server in Emacs, type "M-x server-start".
Starting Emacs daemon.
Emacs daemon should have started, trying to connect again
*ERROR*: Symbol's value as variable is void: greeting

Ciao,
-- 
Gregor

bug#51360: 29.0.50; variable `server-name' initialized too late for use in init file

[Gregor Zattler]

Hi Eli, emacs devs,
* Eli Zaretskii <eliz@gnu.org> [2021-10-24; 18:59]:
>> From: Gregor Zattler <grfz@gmx.de>
>> Date: Sun, 24 Oct 2021 17:34:19 +0200
>> Cc: 51360@debbugs.gnu.org
>>
>> When emacs is started with emacs --daemon=foo (or
>> emacsclinet -a "" -s foo [...]) one does not use
>> `server-start'.
>>
>> > Do you have a recipe for reproducing this?
>>
>> Have
>>
>> (when (equal server-name "foo") (message "My name is foo!"))
>>
>> in .emacs and start emacs with   emacs --daemon=foo
>
> Whatever you do that you need server-name for, can't you do that in
> emacs-startup-hook?  AFAIR, that gets called after the daemon already
> finished its initialization and provided its name to Emacs, so
> server-name should be already populated.

the idea is to initialise the emacs daemon depending on it's
server-name.  Therefore doing it via emacs-startup-hook is
somewhat counter-intuitive


But you are right that works.  Thanks.


Ciao,
--
Gregor

bug#51360: 29.0.50; variable `server-name' initialized too late for use in init file

[Eli Zaretskii]

> From: Gregor Zattler <grfz@gmx.de>
> Date: Sun, 24 Oct 2021 22:00:21 +0200
> 
> > Whatever you do that you need server-name for, can't you do that in
> > emacs-startup-hook?  AFAIR, that gets called after the daemon already
> > finished its initialization and provided its name to Emacs, so
> > server-name should be already populated.
> 
> the idea is to initialise the emacs daemon depending on it's
> server-name.  Therefore doing it via emacs-startup-hook is
> somewhat counter-intuitive

Sorry, I don't think I follow: what has intuition got to do with this?
And what do you mean by "initialise the emacs daemon"? -- that happens
out of your control, in the internal Emacs code.

> But you are right that works.  Thanks.

So does this mean your problem is solved?

bug#51360: 29.0.50; variable `server-name' initialized too late for use in init file

[Gregor Zattler]

[sorry for second post, first did not include bug address]
Hi Eli, emacs devs,
* Eli Zaretskii <eliz@gnu.org> [2021-10-25; 05:27]:
>> From: Gregor Zattler <grfz@gmx.de>
>> Date: Sun, 24 Oct 2021 22:00:21 +0200
>>
>> > Whatever you do that you need server-name for, can't you do that in
>> > emacs-startup-hook?  AFAIR, that gets called after the daemon already
>> > finished its initialization and provided its name to Emacs, so
>> > server-name should be already populated.
>>
>> the idea is to initialise the emacs daemon depending on it's
>> server-name.  Therefore doing it via emacs-startup-hook is
>> somewhat counter-intuitive
>
> Sorry, I don't think I follow: what has intuition got to do with this?
> And what do you mean by "initialise the emacs daemon"? -- that happens
> out of your control, in the internal Emacs code.
>
>> But you are right that works.  Thanks.
>
> So does this mean your problem is solved?

Yes, thanks.  Please close the bug report.

Ciao,
--
Gregor

bug#51360: 29.0.50; variable `server-name' initialized too late for use in init file

[Eli Zaretskii]

> From: Gregor Zattler <grfz@gmx.de>
> Date: Mon, 25 Oct 2021 10:02:16 +0200
> 
> > So does this mean your problem is solved?
> 
> Yes, thanks.  Please close the bug report.

Thanks, closing.