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Subject: bug#2520: 23.0.91; Dies on SIGHUP
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To reproduce:
1) emacs -Q. Emacs process starts.
2) pkill -s 1 emacs. Emacs process dies.
The more appropriate behavior would be to reload the configuration
without restarting (i.e. reread X resource values). This behavior
would be especially useful for the daemon mode. I'm pretty sure
previous snapshot versions used to work that way.
I'm ready to provide any additional info,
Andrey
In GNU Emacs 23.0.91.1 (i486-pc-linux-gnu, GTK+ Version 2.12.12)
of 2009-02-28 on elegiac, modified by Debian
(emacs-snapshot package, version 1:20090228-1)
Windowing system distributor `The X.Org Foundation', version 11.0.10402000
configured using `configure '--build' 'i486-linux-gnu' '--host' 'i486-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' '--localstatedir=/var' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes' '--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/23.0.91/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.0.91/site-lisp:/usr/share/emacs/site-lisp' '--with-x=yes' '--with-x-toolkit=gtk' 'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' 'LDFLAGS=-g -Wl,--as-needed' 'CPPFLAGS=''
Important settings:
value of $LC_ALL: nil
value of $LC_COLLATE: nil
value of $LC_CTYPE: nil
value of $LC_MESSAGES: nil
value of $LC_MONETARY: nil
value of $LC_NUMERIC: nil
value of $LC_TIME: nil
value of $LANG: ru_RU.UTF-8
value of $XMODIFIERS: nil
locale-coding-system: utf-8-unix
default-enable-multibyte-characters: t
Major mode: Lisp Interaction
Minor modes in effect:
delete-selection-mode: t
show-paren-mode: t
pc-selection-mode: t
pretty-control-l-mode: t
shell-dirtrack-mode: t
tooltip-mode: t
mouse-wheel-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
global-auto-composition-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
column-number-mode: t
line-number-mode: t
global-visual-line-mode: t
visual-line-mode: t
transient-mark-mode: t
Recent messages:
Loading /etc/emacs/site-start.d/50w3m-el.el (source)...done
Loading /etc/emacs/site-start.d/50w3m-el-snapshot.el (source)...done
Loading /etc/emacs/site-start.d/51debian-el.el (source)...done
Loading /etc/emacs/site-start.d/99pp-c-l.el (source)...done
Loading gnus...done
Loading pc-select...done
Loading paren...done
Starting Emacs daemon.
When done with this frame, type C-x 5 0
Making completion list... [3 times]
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.420 (Entity 5.420) Content-Type: text/plain; charset=utf-8 X-Loop: owner@HIDDEN From: help-debbugs@HIDDEN (Emacs bug Tracking System) To: cmr.Pent@HIDDEN Subject: bug#2520: Acknowledgement (23.0.91; Dies on SIGHUP) Message-ID: <handler.2520.B.123589848019177.ack@HIDDEN> References: <E1LdheD-00046c-No@HIDDEN> X-Emacs-PR-Message: ack 2520 X-Emacs-PR-Package: emacs Reply-To: 2520 <at> debbugs.gnu.org Date: Sun, 01 Mar 2009 09:15:03 +0000 Thank you for filing a new bug report with Emacs. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): Emacs Bugs <bug-gnu-emacs@HIDDEN> If you wish to submit further information on this problem, please send it to 2520 <at> debbugs.gnu.org, as before. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 2520: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D2520 Emacs Bug Tracking System Contact help-debbugs@HIDDEN with problems
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X-Loop: owner@HIDDEN
Subject: bug#2520: 23.0.91; Dies on SIGHUP
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From: Stefan Monnier <monnier@HIDDEN>
To: cmr.Pent@HIDDEN
Cc: 2520 <at> debbugs.gnu.org, rfrancoise@HIDDEN
Message-ID: <jwv8wnoq2tm.fsf-monnier+emacsbugreports@HIDDEN>
References: <E1LdheD-00046c-No@HIDDEN>
Date: Sun, 01 Mar 2009 17:50:05 -0500
In-Reply-To: <E1LdheD-00046c-No@HIDDEN> (pent@HIDDEN's
message of "Sun, 01 Mar 2009 12:07:45 +0300")
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severity 2520 wishlist
thanks
> 1) emacs -Q. Emacs process starts.
> 2) pkill -s 1 emacs. Emacs process dies.
> The more appropriate behavior would be to reload the configuration
> without restarting (i.e. reread X resource values). This behavior
> would be especially useful for the daemon mode.
It could make sense, indeed. It can be pretty problematic as well,
since most config files read by Emacs (i.e. site-start.el, default.el,
.emacs) are normally only read a single time per session, and in
a particular order, at a particular time, so rereading them later on can
very easily give you unexpected results.
It is a good practice to keep your .emacs file "idempotent", but I think
such files are the exceptions rather than the rule. So, yes, it could
be handy, but it would have to come with big warnings "may not do what
you expect".
> I'm pretty sure previous snapshot versions used to work that way.
Maybe in some other world.
Stefan
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.420 (Entity 5.420) Content-Type: text/plain; charset=utf-8 X-Loop: owner@HIDDEN From: help-debbugs@HIDDEN (Emacs bug Tracking System) To: Stefan Monnier <monnier@HIDDEN> Subject: bug#2520: Info received (bug#2520: 23.0.91; Dies on SIGHUP) Message-ID: <handler.2520.B2520.12359478162226.ackinfo@HIDDEN> References: <jwv8wnoq2tm.fsf-monnier+emacsbugreports@HIDDEN> X-Emacs-PR-Message: ack-info 2520 X-Emacs-PR-Package: emacs Reply-To: 2520 <at> debbugs.gnu.org Date: Sun, 01 Mar 2009 23:00:03 +0000 Thank you for the additional information you have supplied regarding this bug report. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): Emacs Bugs <bug-gnu-emacs@HIDDEN> If you wish to submit further information on this problem, please send it to 2520 <at> debbugs.gnu.org, as before. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 2520: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D2520 Emacs Bug Tracking System Contact help-debbugs@HIDDEN with problems
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From: Stefan Monnier <monnier@HIDDEN>
To: cmr.Pent@HIDDEN
Cc: 2520 <at> debbugs.gnu.org, rfrancoise@HIDDEN
Subject: Re: bug#2520: 23.0.91; Dies on SIGHUP
Message-ID: <jwv8wnoq2tm.fsf-monnier+emacsbugreports@HIDDEN>
References: <E1LdheD-00046c-No@HIDDEN>
Date: Sun, 01 Mar 2009 17:50:05 -0500
In-Reply-To: <E1LdheD-00046c-No@HIDDEN> (pent@HIDDEN's
message of "Sun, 01 Mar 2009 12:07:45 +0300")
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severity 2520 wishlist
thanks
> 1) emacs -Q. Emacs process starts.
> 2) pkill -s 1 emacs. Emacs process dies.
> The more appropriate behavior would be to reload the configuration
> without restarting (i.e. reread X resource values). This behavior
> would be especially useful for the daemon mode.
It could make sense, indeed. It can be pretty problematic as well,
since most config files read by Emacs (i.e. site-start.el, default.el,
.emacs) are normally only read a single time per session, and in
a particular order, at a particular time, so rereading them later on can
very easily give you unexpected results.
It is a good practice to keep your .emacs file "idempotent", but I think
such files are the exceptions rather than the rule. So, yes, it could
be handy, but it would have to come with big warnings "may not do what
you expect".
> I'm pretty sure previous snapshot versions used to work that way.
Maybe in some other world.
Stefan
X-Loop: help-debbugs@HIDDEN
Subject: bug#2520: 23.0.91; Dies on SIGHUP
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Content preview: Stefan Monnier <monnier@HIDDEN> writes: >> 1) emacs
-Q. Emacs process starts. >> 2) pkill -s 1 emacs. Emacs process dies. > >>
The more appropriate behavior would be to reload the configuration >> without
restarting (i.e. reread X resource [...]
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Stefan Monnier <monnier@HIDDEN> writes:
>> 1) emacs -Q. Emacs process starts.
>> 2) pkill -s 1 emacs. Emacs process dies.
>
>> The more appropriate behavior would be to reload the configuration
>> without restarting (i.e. reread X resource values). This behavior
>> would be especially useful for the daemon mode.
>
> It could make sense, indeed. It can be pretty problematic as well,
> since most config files read by Emacs (i.e. site-start.el, default.el,
> .emacs) are normally only read a single time per session, and in
> a particular order, at a particular time, so rereading them later on can
> very easily give you unexpected results.
>
> It is a good practice to keep your .emacs file "idempotent", but I think
> such files are the exceptions rather than the rule. So, yes, it could
> be handy, but it would have to come with big warnings "may not do what
> you expect".
So the suggestion here is to make Emacs re-read ~/.emacs on SIGHUP. I
think that sounds like a useful feature -- it would allow you to, for
instance, ssh in to a machine, put (server-start) in ~/.emacs, and then
SIGHUP the Emacs process you want to talk to.
It's definitely something I could have used a number of times... and
re-reading init files on SIGHUP isn't an unusual thing to do.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
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Subject: bug#2520: 23.0.91; Dies on SIGHUP
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Date: Sun, 29 Sep 2019 16:19:10 +0200
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On Sep 29 2019, Lars Ingebrigtsen <larsi@HIDDEN> wrote:
> It's definitely something I could have used a number of times... and
> re-reading init files on SIGHUP isn't an unusual thing to do.
But only for demons. Normally a process receives SIGHUP if its
controlling terminal goes away.
Andreas.
--
Andreas Schwab, schwab@HIDDEN
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"And now for something completely different."
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Subject: bug#2520: 23.0.91; Dies on SIGHUP
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Content preview: Andreas Schwab <schwab@HIDDEN> writes: > On Sep 29
2019, Lars Ingebrigtsen <larsi@HIDDEN> wrote: > >> It's definitely something
I could have used a number of times... and >> re-reading init files on SIGHUP
isn't an unusual thing to do. > [...]
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Andreas Schwab <schwab@HIDDEN> writes:
> On Sep 29 2019, Lars Ingebrigtsen <larsi@HIDDEN> wrote:
>
>> It's definitely something I could have used a number of times... and
>> re-reading init files on SIGHUP isn't an unusual thing to do.
>
> But only for demons. Normally a process receives SIGHUP if its
> controlling terminal goes away.
Yeah, that's true.
I guess SIGUSR1 and 2 are also taken...
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
X-Loop: help-debbugs@HIDDEN
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Lars Ingebrigtsen <larsi@HIDDEN> writes:
> Andreas Schwab <schwab@HIDDEN> writes:
>
>> On Sep 29 2019, Lars Ingebrigtsen <larsi@HIDDEN> wrote:
>>
>>> It's definitely something I could have used a number of times... and
>>> re-reading init files on SIGHUP isn't an unusual thing to do.
>>
>> But only for demons. Normally a process receives SIGHUP if its
>> controlling terminal goes away.
>
> Yeah, that's true.
>
> I guess SIGUSR1 and 2 are also taken...
So do we actually want to do anything here? Simply re-reading the
configuration comes with its own set of complications for us.
X-Loop: help-debbugs@HIDDEN
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Stefan Kangas [2021-10-22 02:19:21] wrote:
> Lars Ingebrigtsen <larsi@HIDDEN> writes:
>> Andreas Schwab <schwab@HIDDEN> writes:
>>> On Sep 29 2019, Lars Ingebrigtsen <larsi@HIDDEN> wrote:
>>>> It's definitely something I could have used a number of times... and
>>>> re-reading init files on SIGHUP isn't an unusual thing to do.
>>> But only for demons. Normally a process receives SIGHUP if its
>>> controlling terminal goes away.
>> Yeah, that's true.
>> I guess SIGUSR1 and 2 are also taken...
Not really: they're turned into input events and one of them can be used
for `debug-on-event` but the other is free.
> So do we actually want to do anything here? Simply re-reading the
> configuration comes with its own set of complications for us.
BTW, if someone wants to re-read their init file upon SIGUSR1, they can
do so via something like:
(define-key special-event-map [sigusr1] <...>)
-- Stefan
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From: Lars Ingebrigtsen <larsi@HIDDEN>
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X-Now-Playing: Nothing But Software's _Neo-Boulder is Wherever you Take Me_:
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Date: Fri, 22 Oct 2021 16:05:44 +0200
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Content preview: Stefan Monnier <monnier@HIDDEN> writes: >>> I guess
SIGUSR1 and 2 are also taken... > > Not really: they're turned into input
events and one of them can be used > for `debug-on-event` but the other is
free. > >> So do we actually want to do [...]
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Stefan Monnier <monnier@HIDDEN> writes:
>>> I guess SIGUSR1 and 2 are also taken...
>
> Not really: they're turned into input events and one of them can be used
> for `debug-on-event` but the other is free.
>
>> So do we actually want to do anything here? Simply re-reading the
>> configuration comes with its own set of complications for us.
>
> BTW, if someone wants to re-read their init file upon SIGUSR1, they can
> do so via something like:
>
> (define-key special-event-map [sigusr1] <...>)
But should Emacs offer something along these lines by default? I think
it makes some sense to do so, because people only think about adding
this after the first time they need it. (Well, after the third time,
because we're too lazy to do it the first couple times around, and just
swear a lot instead.)
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
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Subject: bug#2520: 23.0.91; Dies on SIGHUP
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Date: Fri, 22 Oct 2021 10:59:30 -0400
In-Reply-To: <878rylf93b.fsf@HIDDEN> (Lars Ingebrigtsen's message of "Fri,
22 Oct 2021 16:05:44 +0200")
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Lars Ingebrigtsen [2021-10-22 16:05:44] wrote:
> Stefan Monnier <monnier@HIDDEN> writes:
>>>> I guess SIGUSR1 and 2 are also taken...
>>
>> Not really: they're turned into input events and one of them can be used
>> for `debug-on-event` but the other is free.
>>
>>> So do we actually want to do anything here? Simply re-reading the
>>> configuration comes with its own set of complications for us.
>>
>> BTW, if someone wants to re-read their init file upon SIGUSR1, they can
>> do so via something like:
>>
>> (define-key special-event-map [sigusr1] <...>)
>
> But should Emacs offer something along these lines by default? I think
> it makes some sense to do so, because people only think about adding
> this after the first time they need it. (Well, after the third time,
> because we're too lazy to do it the first couple times around, and just
> swear a lot instead.)
Do we have a `M-x <something>` to re-read the init file?
If not, why would it more important to offer a way to do it via SIGUSR?
Stefan
X-Loop: help-debbugs@HIDDEN
Subject: bug#2520: 23.0.91; Dies on SIGHUP
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Content preview: Stefan Monnier <monnier@HIDDEN> writes: > Do we
have a `M-x <something>` to re-read the init file? > If not, why would it
more important to offer a way to do it via SIGUSR? The use case is that you're
ssh-ing in to an Emacs running on a machine, and you want to communicate
with that Emacs (because it has all the information you absolutely need right
now in *scratch*), bu [...]
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Stefan Monnier <monnier@HIDDEN> writes:
> Do we have a `M-x <something>` to re-read the init file?
> If not, why would it more important to offer a way to do it via SIGUSR?
The use case is that you're ssh-ing in to an Emacs running on a machine,
and you want to communicate with that Emacs (because it has all the
information you absolutely need right now in *scratch*), but you haven't
set up emacs-server on it yet. (Any similarity to something that's
happened to me a dozen times is purely coincidental.)
So if you could put (server-start) in ~/.emacs and send it SIGUSR,
that'd be nice.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
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Subject: bug#2520: 23.0.91; Dies on SIGHUP
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Date: Fri, 22 Oct 2021 18:31:05 -0400
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Lars Ingebrigtsen [2021-10-22 17:06:09] wrote:
> Stefan Monnier <monnier@HIDDEN> writes:
>> Do we have a `M-x <something>` to re-read the init file?
>> If not, why would it more important to offer a way to do it via SIGUSR?
> The use case is that you're ssh-ing in to an Emacs running on a machine,
> and you want to communicate with that Emacs (because it has all the
> information you absolutely need right now in *scratch*), but you haven't
> set up emacs-server on it yet. (Any similarity to something that's
> happened to me a dozen times is purely coincidental.)
> So if you could put (server-start) in ~/.emacs and send it SIGUSR,
> that'd be nice.
So maybe rather than load the init file, we wan to use SIGUSR1 cause
Emacs to read ~/.emacs.d/sigusr1.el ?
Stefan
PS: FWIW, when this happens, I use gdb to attach to the process
and "call (intern ("server-mode"));" from there.
[ This said, it doesn't happen often, because I do enable `server-mode`
in my init file. ]
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Date: Sun, 24 Oct 2021 14:20:06 +0200
In-Reply-To: <jwv4k988zlo.fsf-monnier+emacs@HIDDEN> (Stefan Monnier's message
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Content preview: Stefan Monnier <monnier@HIDDEN> writes: > So maybe
rather than load the init file, we wan to use SIGUSR1 cause > Emacs to read
~/.emacs.d/sigusr1.el ? Sure, that would also make sense. "Re-reading the
startup file" sounds like a less hacky interface, though.
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Stefan Monnier <monnier@HIDDEN> writes:
> So maybe rather than load the init file, we wan to use SIGUSR1 cause
> Emacs to read ~/.emacs.d/sigusr1.el ?
Sure, that would also make sense. "Re-reading the startup file" sounds
like a less hacky interface, though.
> PS: FWIW, when this happens, I use gdb to attach to the process
> and "call (intern ("server-mode"));" from there.
Heh. Hadn't thought about that.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
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retitle 2520 Read configuration file on SIGUSR1
tags 2520 confirmed
thanks
Lars Ingebrigtsen <larsi@HIDDEN> writes:
> Stefan Monnier <monnier@HIDDEN> writes:
>
>> So maybe rather than load the init file, we wan to use SIGUSR1 cause
>> Emacs to read ~/.emacs.d/sigusr1.el ?
>
> Sure, that would also make sense. "Re-reading the startup file" sounds
> like a less hacky interface, though.
>
>> PS: FWIW, when this happens, I use gdb to attach to the process
>> and "call (intern ("server-mode"));" from there.
>
> Heh. Hadn't thought about that.
Retitling and adding the confirmed tag so this is easier to find.
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retitle 2520 Read configuration file on SIGUSR1
tags 2520 confirmed
thanks
Lars Ingebrigtsen <larsi@HIDDEN> writes:
> Stefan Monnier <monnier@HIDDEN> writes:
>
>> So maybe rather than load the init file, we wan to use SIGUSR1 cause
>> Emacs to read ~/.emacs.d/sigusr1.el ?
>
> Sure, that would also make sense. "Re-reading the startup file" sounds
> like a less hacky interface, though.
>
>> PS: FWIW, when this happens, I use gdb to attach to the process
>> and "call (intern ("server-mode"));" from there.
>
> Heh. Hadn't thought about that.
Retitling and adding the confirmed tag so this is easier to find.
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Subject: Re: bug#2520: 23.0.91; Dies on SIGHUP
To: Lars Ingebrigtsen <larsi@HIDDEN>,
Stefan Monnier <monnier@HIDDEN>
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retitle 2520 Read configuration file on SIGUSR1
tags 2520 confirmed
thanks
Lars Ingebrigtsen <larsi@HIDDEN> writes:
> Stefan Monnier <monnier@HIDDEN> writes:
>
>> So maybe rather than load the init file, we wan to use SIGUSR1 cause
>> Emacs to read ~/.emacs.d/sigusr1.el ?
>
> Sure, that would also make sense. "Re-reading the startup file" sounds
> like a less hacky interface, though.
>
>> PS: FWIW, when this happens, I use gdb to attach to the process
>> and "call (intern ("server-mode"));" from there.
>
> Heh. Hadn't thought about that.
Retitling and adding the confirmed tag so this is easier to find.
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