GNU bug report logs - #22381
24.5; emacs hangs in shell-script-mode + show-paren-mode

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 22381 in the body.
You can then email your comments to 22381 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: emacs <at> bobspin.de
To: bug-gnu-emacs <at> gnu.org
Subject: 24.5; emacs hangs in shell-script-mode + show-paren-mode
Date: Sat, 16 Jan 2016 02:24:37 +0100

Hi,

when I'm in shell-script-mode with show-paren-mode enabled my Emacs
might hang if I'm writing a while-loop. In order for this to happen the
last line in the buffer has to start with "while" and must not be
terminated with a newline. The following actions trigger this symptom
for me when I start emacs using "emacs -Q":

1) Enable show-paren-mode by typing "(show-paren-mode 1)" and evaluating
it with "C-x C-e".
2) Enable shell-script-mode by typing "(shell-script-mode)" and
evaluting it with "C-x C-e".
3) Clear the *scratch*-buffer by first doing "C-x h" followed by "C-w".
4) Type the word "while". Other words might follow but the line might
not be terminated with a newline.
5) Go to the begining of the line using "C-a". Afterwards emacs hangs. I
can't move the cursor anymore.

To quit this state I type "C-g C-g C-g". If afterwards I do "C-h l" I
get:

<help-echo> <help-echo> ( s h o w - p a r e n - m o
d e SPC 1 ) C-x C-e <return> ( s h e l l - s c r i
p t - m o d e ) C-x C-e <return> C-x h C-w w h i l
e C-a C-h l

If show-paren-mode is not enabled or the "while"-line is terminated with
a newline, then the problem does not occur. Further I have the same
problem with "if", "case", "for", "until". 
It is not necessary that the line begins with these keywords, e.g.
"ls -1 | while read line". If I move the cursor to the beginning of this
"while" I have the same problem (as long as the line is not terminated
with a newline). 

Cheers,
Robert



In GNU Emacs 24.5.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.16.6)
 of 2015-09-10 on foutrelis
Windowing system distributor `The X.Org Foundation', version 11.0.11800000
Configured using:
 `configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
 --localstatedir=/var --with-x-toolkit=gtk3 --with-xft
 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong
 --param=ssp-buffer-size=4' CPPFLAGS=-D_FORTIFY_SOURCE=2
 LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro'

Important settings:
  value of $LC_NUMERIC: C
  value of $LANG: de_DE.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Shell-script

Minor modes in effect:
  sh-electric-here-document-mode: t
  show-paren-mode: t
  tooltip-mode: t
  electric-indent-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 messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
t
Setting up indent for shell type bash
Indentation variables are now local.
Indentation setup for shell type bash
nil
Mark set [2 times]
Quit
Type C-x 1 to delete the help window.

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util
help-fns mail-prsvr mail-utils help-mode easymenu sh-script smie
executable paren time-date tooltip electric uniquify 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 prog-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 nadvice
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
gfilenotify dynamic-setting system-font-setting font-render-setting
move-toolbar gtk x-toolkit x multi-tty emacs)

Memory information:
((conses 16 78588 7843)
 (symbols 48 18083 0)
 (miscs 40 59 149)
 (strings 32 11666 4609)
 (string-bytes 1 303227)
 (vectors 16 9767)
 (vector-slots 8 401840 14424)
 (floats 8 67 350)
 (intervals 56 195 3)
 (buffers 960 12)
 (heap 1024 35245 944))

Message #12 received at 22381-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: emacs <at> bobspin.de
Cc: 22381-done <at> debbugs.gnu.org
Subject: Re: bug#22381: 24.5;
 emacs hangs in shell-script-mode + show-paren-mode
Date: Sat, 16 Jan 2016 10:08:04 +0200

> From: emacs <at> bobspin.de
> Date: Sat, 16 Jan 2016 02:24:37 +0100
> 
> when I'm in shell-script-mode with show-paren-mode enabled my Emacs
> might hang if I'm writing a while-loop. In order for this to happen the
> last line in the buffer has to start with "while" and must not be
> terminated with a newline. The following actions trigger this symptom
> for me when I start emacs using "emacs -Q":
> 
> 1) Enable show-paren-mode by typing "(show-paren-mode 1)" and evaluating
> it with "C-x C-e".
> 2) Enable shell-script-mode by typing "(shell-script-mode)" and
> evaluting it with "C-x C-e".
> 3) Clear the *scratch*-buffer by first doing "C-x h" followed by "C-w".
> 4) Type the word "while". Other words might follow but the line might
> not be terminated with a newline.
> 5) Go to the begining of the line using "C-a". Afterwards emacs hangs. I
> can't move the cursor anymore.

Thank you for your report.

I can reproduce this bug in Emacs 24.5, but not in the current
development sources on the emacs-25 branch.  So this bug appears to be
already fixed.

I'm therefore closing this bug.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.