--- Begin Message ---
Subject: |
24.3; Emacs exits with exit code 0 if EOF of stdin has been reached |
Date: |
Wed, 18 Feb 2015 21:58:42 +0100 |
This has been discussed in
https://lists.gnu.org/archive/html/help-gnu-emacs/2015-02/msg00381.html.
To reproduce:
$ emacs -Q -batch -eval '(error "foo")' < /dev/null ; echo $?
foo
255
$ emacs -Q -batch -eval '(kill-emacs 37)' < /dev/null ; echo $?
37
$ emacs -Q -batch -eval '(progn (ignore-errors (read)) (kill-emacs 37))' <<<
nil ; echo $?
Lisp expression: 37
$ emacs -Q -batch -eval '(read)' < /dev/null ; echo $?
Lisp expression: Error reading from stdin
0
$ emacs -Q -batch -eval '(progn (ignore-errors (read)) (kill-emacs 37))' <
/dev/null ; echo $?
Lisp expression: 0
The examples with nonzero exit code are as expected. The examples with
zero exit code are unexpected. They are caused by the code
if (feof (stdin))
arg = Qt;
in Fkill_emacs. This behavior confuses e.g. unit tests runners that
rely on a precise exit code.
It is not documented in the documentation for kill-emacs.
In GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.7)
of 2014-03-07 on lamiak, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11501000
System Description: Ubuntu 14.04 LTS
Configured using:
`configure '--build' 'x86_64-linux-gnu' '--build' 'x86_64-linux-gnu'
'--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
'--localstatedir=/var/lib' '--infodir=/usr/share/info'
'--mandir=/usr/share/man' '--with-pop=yes'
'--enable-locallisppath=/etc/emacs24:/etc/emacs:/usr/local/share/emacs/24.3/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.3/site-lisp:/usr/share/emacs/site-lisp'
'--with-crt-dir=/usr/lib/x86_64-linux-gnu' '--with-x=yes'
'--with-x-toolkit=gtk3' '--with-toolkit-scroll-bars'
'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -fstack-protector
--param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wall'
'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro'
'CPPFLAGS=-D_FORTIFY_SOURCE=2''
Important settings:
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
default enable-multibyte-characters: t
Major mode: Lisp Interaction
Minor modes in effect:
tooltip-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
Recent input:
<help-echo> M-x r e p o r t - e m <tab> <return>
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Load-path shadows:
None found.
Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util mail-prsvr mail-utils time-date tooltip ediff-hook vc-hooks
lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt
fringe tabulated-list newcomment lisp-mode register page menu-bar
rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax
facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak
czech european ethiopic indian cyrillic chinese case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer loaddefs button faces
cus-face macroexp files text-properties overlay sha1 md5 base64 format
env code-pages mule custom widget hashtable-print-readable backquote
make-network-process dbusbind dynamic-setting system-font-setting
font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)
--- End Message ---
--- Begin Message ---
Subject: |
Re: bug#19897: 24.3; Emacs exits with exit code 0 if EOF of stdin has been reached |
Date: |
Wed, 18 Feb 2015 23:16:40 +0200 |
> From: Philipp Stephani <address@hidden>
> Date: Wed, 18 Feb 2015 21:58:42 +0100
>
> This has been discussed in
> https://lists.gnu.org/archive/html/help-gnu-emacs/2015-02/msg00381.html.
>
> To reproduce:
>
> $ emacs -Q -batch -eval '(error "foo")' < /dev/null ; echo $?
> foo
> 255
>
> $ emacs -Q -batch -eval '(kill-emacs 37)' < /dev/null ; echo $?
> 37
>
> $ emacs -Q -batch -eval '(progn (ignore-errors (read)) (kill-emacs 37))' <<<
> nil ; echo $?
> Lisp expression: 37
>
> $ emacs -Q -batch -eval '(read)' < /dev/null ; echo $?
> Lisp expression: Error reading from stdin
> 0
>
> $ emacs -Q -batch -eval '(progn (ignore-errors (read)) (kill-emacs 37))' <
> /dev/null ; echo $?
> Lisp expression: 0
>
> The examples with nonzero exit code are as expected. The examples with
> zero exit code are unexpected. They are caused by the code
>
> if (feof (stdin))
> arg = Qt;
>
> in Fkill_emacs. This behavior confuses e.g. unit tests runners that
> rely on a precise exit code.
> It is not documented in the documentation for kill-emacs.
Fixed in commit 7932d06 on master branch.
--- End Message ---