Backtraces on server?

Backtraces on server?

[Clément Pit--Claudel]

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Hi emacs-dev,

Is is by design that the server doesn't print backtraces, or am I doing something silly?

    $ emacs -Q --eval '(setq server-name "test")' --daemon

    $ emacsclient -s test --eval "(progn (setq debug-on-error t) (/ 1 0))"
    *ERROR*: Arithmetic error

    $ emacsclient -s test --eval "(progn (setq noninteractive t) (setq debug-on-error t) (/ 1 0))"
    *ERROR*: Arithmetic error

Clément.


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Re: Backtraces on server?

[Stefan Monnier]

> Is is by design that the server doesn't print backtraces, or am
> I doing something silly?
>
>     $ emacs -Q --eval '(setq server-name "test")' --daemon
>
>     $ emacsclient -s test --eval "(progn (setq debug-on-error t) (/ 1 0))"
>     *ERROR*: Arithmetic error
>
>     $ emacsclient -s test --eval "(progn (setq noninteractive t) (setq debug-on-error t) (/ 1 0))"
>     *ERROR*: Arithmetic error

IIRC server.el runs the expression within a condition-case so as to send
the error back to the client, and debug-on-error only kicks in for
errors that aren't caught by any condition-case.

We could use the condition-case-unless-debug construct there, but you
still wouldn't see the backtrace in the client.


        Stefan

Re: Backtraces on server?

[Eli Zaretskii]

> From: Clément Pit--Claudel <clement.pit@gmail.com>
> Date: Wed, 3 Aug 2016 13:05:47 -0400
> 
> Is is by design that the server doesn't print backtraces, or am I doing something silly?

It's a bug.

Re: Backtraces on server?

[Clément Pit--Claudel]

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On 2016-08-05 02:08, Eli Zaretskii wrote:
>> From: Clément Pit--Claudel <clement.pit@gmail.com>
>> Date: Wed, 3 Aug 2016 13:05:47 -0400
>>
>> Is is by design that the server doesn't print backtraces, or am I doing something silly?
> 
> It's a bug.

Thanks for confirming :)


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Re: Backtraces on server?

[Philipp Stephani]

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Eli Zaretskii <eliz@gnu.org> schrieb am Fr., 5. Aug. 2016 um 08:09 Uhr:

> > From: Clément Pit--Claudel <clement.pit@gmail.com>
> > Date: Wed, 3 Aug 2016 13:05:47 -0400
> >
> > Is is by design that the server doesn't print backtraces, or am I doing
> something silly?
>
> It's a bug.
>
>
Is there already a bug number? Didn't find anything using
https://debbugs.gnu.org/cgi/pkgreport.cgi?include=subject%3Aemacsclient+backtrace;package=emacs
.

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