GNU bug report logs -
#33114
25.2; Emacs hangs on closing a parenthesis in a regexp in cperl mode
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Reported by: Vincent Lefevre <vincent <at> vinc17.net>
Date: Mon, 22 Oct 2018 00:43:01 UTC
Severity: normal
Found in version 25.2
Fixed in version 26.2
Done: Eli Zaretskii <eliz <at> gnu.org>
Bug is archived. No further changes may be made.
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bug-gnu-emacs <at> gnu.org
:
bug#33114
; Package
emacs
.
(Mon, 22 Oct 2018 00:43:01 GMT)
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Vincent Lefevre <vincent <at> vinc17.net>
:
New bug report received and forwarded. Copy sent to
bug-gnu-emacs <at> gnu.org
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(Mon, 22 Oct 2018 00:43:01 GMT)
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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
Consider the following file:
# -*- mode: cperl -*-
s/./(/e;
1. Open it with "emacs -Q".
2. Put the cursor just after the opening parenthesis.
3. Type ')' (closing parenthesis).
This makes Emacs hang. A C-g alone has no effect. Several C-g in a row
may give the control back to the user.
Tested under Debian/unstable.
In GNU Emacs 25.2.2 (x86_64-pc-linux-gnu, GTK+ Version 3.22.30)
of 2018-07-11, modified by Debian built on x86-ubc-01
Windowing system distributor 'The X.Org Foundation', version 11.0.12001000
System Description: Debian GNU/Linux stable-updates (sid)
Configured using:
'configure --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/emacs25:/etc/emacs:/usr/local/share/emacs/25.2/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/25.2/site-lisp:/usr/share/emacs/site-lisp
--with-sound=alsa --without-gconf --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/emacs25:/etc/emacs:/usr/local/share/emacs/25.2/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/25.2/site-lisp:/usr/share/emacs/site-lisp
--with-sound=alsa --without-gconf --with-x=yes --with-x-toolkit=gtk3
--with-toolkit-scroll-bars 'CFLAGS=-g -O2
-fdebug-prefix-map=/build/emacs25-cfFROJ/emacs25-25.2+1=.
-fstack-protector-strong -Wformat -Werror=format-security -Wall'
'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2' LDFLAGS=-Wl,-z,relro'
Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS NOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11
Important settings:
value of $LC_COLLATE: POSIX
value of $LC_CTYPE: en_US.UTF-8
value of $LC_TIME: en_DK
value of $LANG: POSIX
locale-coding-system: utf-8-unix
Major mode: Lisp Interaction
Minor modes in effect:
display-time-mode: t
show-paren-mode: t
tooltip-mode: t
global-eldoc-mode: t
electric-indent-mode: t
mouse-wheel-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
column-number-mode: t
line-number-mode: t
transient-mark-mode: t
Recent messages:
Loading cjk-enc...done
Loading /etc/emacs/site-start.d/50latex-cjk-common.el (source)...done
Loading /etc/emacs/site-start.d/50latex-cjk-thai.el (source)...done
Loading /etc/emacs/site-start.d/50psvn.el (source)...done
Loading /etc/emacs/site-start.d/50python-docutils.el (source)...done
Loading /etc/emacs/site-start.d/50texlive-lang-english.el (source)...done
Loading /etc/emacs/site-start.d/50why3.el (source)...done
Loading /home/vinc17/share/emacs/site-lisp/mutteditor.el (source)...done
Loading time...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Load-path shadows:
/usr/share/emacs/25.2/site-lisp/why3 hides /usr/share/emacs/site-lisp/why3
/usr/share/emacs/25.2/site-lisp/debian-startup hides /usr/share/emacs/site-lisp/debian-startup
/usr/share/emacs25/site-lisp/cmake-data/cmake-mode hides /usr/share/emacs/site-lisp/cmake-mode
/usr/share/emacs/site-lisp/rst hides /usr/share/emacs/25.2/lisp/textmodes/rst
/usr/share/emacs25/site-lisp/latex-cjk-thai/thai-word hides /usr/share/emacs/25.2/lisp/language/thai-word
Features:
(shadow sort mail-extr warnings emacsbug message dired format-spec
rfc822 mml mml-sec password-cache epg epg-config gnus-util mm-decode
mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
sendmail rfc2047 rfc2045 ietf-drums mm-util help-fns help-mode easymenu
mail-prsvr mail-utils time cus-start cus-load paren cc-styles cc-align
cc-engine cc-vars cc-defs edmacro kmacro cl-loaddefs pcase cl-lib
time-date mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel x-win term/common-win x-dnd tool-bar dnd fontset
image regexp-opt fringe tabulated-list newcomment elisp-mode lisp-mode
prog-mode register page menu-bar rfn-eshadow timer select scroll-bar
mouse jit-lock font-lock syntax facemenu font-core frame cl-generic cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese charscript case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer cl-preloaded 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 dbusbind inotify dynamic-setting
system-font-setting font-render-setting move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)
Memory information:
((conses 16 107238 7863)
(symbols 48 22452 0)
(miscs 40 54 113)
(strings 32 20694 3424)
(string-bytes 1 601857)
(vectors 16 12880)
(vector-slots 8 443130 2641)
(floats 8 171 162)
(intervals 56 266 0)
(buffers 976 18))
Changed bug title to '25.2; Emacs hangs on closing a parenthesis in a regexp in cperl mode' from '25.2; Emacs hangs on closing a perenthesis in a regexp in cperl mode'
Request was from
Vincent Lefevre <vincent <at> vinc17.net>
to
control <at> debbugs.gnu.org
.
(Mon, 22 Oct 2018 01:05:02 GMT)
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Information forwarded
to
bug-gnu-emacs <at> gnu.org
:
bug#33114
; Package
emacs
.
(Tue, 23 Oct 2018 14:47:01 GMT)
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Message #10 received at 33114 <at> debbugs.gnu.org (full text, mbox):
In article <mailman.2564.1540168987.1284.bug-gnu-emacs <at> gnu.org> you wrote:
> Consider the following file:
> # -*- mode: cperl -*-
> s/./(/e;
> 1. Open it with "emacs -Q".
> 2. Put the cursor just after the opening parenthesis.
> 3. Type ')' (closing parenthesis).
> This makes Emacs hang. A C-g alone has no effect. Several C-g in a row
> may give the control back to the user.
I tried this in Emacs 25.2 -Q under Gentoo. I haven't yet been able to
reproduce the error. Instead, on typing the ), I get the error message:
End of `s/ ... // ... /' string/RE not found: (scan-error Unbalanced parentheses 29 32)
. Maybe something in your Emacs build configuration is clashing with
something in cperl mode.
> Tested under Debian/unstable.
> In GNU Emacs 25.2.2 (x86_64-pc-linux-gnu, GTK+ Version 3.22.30)
> of 2018-07-11, modified by Debian built on x86-ubc-01
> Windowing system distributor 'The X.Org Foundation', version 11.0.12001000
> System Description: Debian GNU/Linux stable-updates (sid)
--
Alan Mackenzie (Nuremberg, Germany).
Information forwarded
to
bug-gnu-emacs <at> gnu.org
:
bug#33114
; Package
emacs
.
(Tue, 23 Oct 2018 15:21:02 GMT)
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Message #13 received at 33114 <at> debbugs.gnu.org (full text, mbox):
> From: Vincent Lefevre <vincent <at> vinc17.net>
> Date: Mon, 22 Oct 2018 02:37:49 +0200
>
>
> Consider the following file:
>
> # -*- mode: cperl -*-
> s/./(/e;
>
> 1. Open it with "emacs -Q".
> 2. Put the cursor just after the opening parenthesis.
> 3. Type ')' (closing parenthesis).
>
> This makes Emacs hang. A C-g alone has no effect. Several C-g in a row
> may give the control back to the user.
Does the patch below produce good results? (I don't use CPerl mode,
so I don't know if the highlighting after the change is correct.)
Thanks.
--- lisp/progmodes/cperl-mode.el~0 2018-06-11 06:32:21.000000000 +0300
+++ lisp/progmodes/cperl-mode.el 2018-10-23 18:02:06.924582600 +0300
@@ -8786,7 +8786,7 @@
(goto-char new-beg)))
(setq beg (point))
(goto-char end)
- (while (and end
+ (while (and end (< end (point-max))
(progn
(or (bolp) (condition-case nil
(forward-line 1)
Information forwarded
to
bug-gnu-emacs <at> gnu.org
:
bug#33114
; Package
emacs
.
(Thu, 25 Oct 2018 11:22:01 GMT)
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Message #16 received at 33114 <at> debbugs.gnu.org (full text, mbox):
On 2018-10-23 18:19:59 +0300, Eli Zaretskii wrote:
> > # -*- mode: cperl -*-
> > s/./(/e;
> >
> > 1. Open it with "emacs -Q".
> > 2. Put the cursor just after the opening parenthesis.
> > 3. Type ')' (closing parenthesis).
> >
> > This makes Emacs hang. A C-g alone has no effect. Several C-g in a row
> > may give the control back to the user.
>
> Does the patch below produce good results? (I don't use CPerl mode,
> so I don't know if the highlighting after the change is correct.)
Thanks, this solves the hang problem, and the highlighting still
seems to be correct.
Note that there is still a bug: I get an error
End of ‘s/ ... // ... /’ string/RE not found: (scan-error Unbalanced parentheses 26 29)
but I already got this error without the patch under conditions
with which Emacs did not hang, e.g. with:
s/./(/;
(i.e. without the 'e').
--
Vincent Lefèvre <vincent <at> vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
Reply sent
to
Eli Zaretskii <eliz <at> gnu.org>
:
You have taken responsibility.
(Thu, 25 Oct 2018 15:00:02 GMT)
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Notification sent
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Vincent Lefevre <vincent <at> vinc17.net>
:
bug acknowledged by developer.
(Thu, 25 Oct 2018 15:00:02 GMT)
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Message #21 received at 33114-done <at> debbugs.gnu.org (full text, mbox):
> Date: Thu, 25 Oct 2018 13:21:17 +0200
> From: Vincent Lefevre <vincent <at> vinc17.net>
> Cc: 33114 <at> debbugs.gnu.org
>
> > > 1. Open it with "emacs -Q".
> > > 2. Put the cursor just after the opening parenthesis.
> > > 3. Type ')' (closing parenthesis).
> > >
> > > This makes Emacs hang. A C-g alone has no effect. Several C-g in a row
> > > may give the control back to the user.
> >
> > Does the patch below produce good results? (I don't use CPerl mode,
> > so I don't know if the highlighting after the change is correct.)
>
> Thanks, this solves the hang problem, and the highlighting still
> seems to be correct.
Thanks, pushed to the emacs-26 branch.
> Note that there is still a bug: I get an error
>
> End of ‘s/ ... // ... /’ string/RE not found: (scan-error Unbalanced parentheses 26 29)
>
> but I already got this error without the patch under conditions
Yes, I think this is a separate issue.
bug archived.
Request was from
Debbugs Internal Request <help-debbugs <at> gnu.org>
to
internal_control <at> debbugs.gnu.org
.
(Fri, 23 Nov 2018 12:24:04 GMT)
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bug unarchived.
Request was from
Glenn Morris <rgm <at> gnu.org>
to
control <at> debbugs.gnu.org
.
(Thu, 03 Jan 2019 22:12:01 GMT)
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bug Marked as fixed in versions 26.2.
Request was from
Glenn Morris <rgm <at> gnu.org>
to
control <at> debbugs.gnu.org
.
(Thu, 03 Jan 2019 22:12:01 GMT)
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bug archived.
Request was from
Debbugs Internal Request <help-debbugs <at> gnu.org>
to
internal_control <at> debbugs.gnu.org
.
(Fri, 01 Feb 2019 12:24:05 GMT)
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This bug report was last modified 5 years and 78 days ago.
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