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Subject: bug#5007: 23.1; comint history doesn't handle multi-character delimiters
Reply-To: Mark Diekhans <markd@HIDDEN>, 5007 <at> debbugs.gnu.org
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Message-ID: <19208.8707.951078.487362@HIDDEN>
Date: Sat, 21 Nov 2009 09:23:15 -0800
From: Mark Diekhans <markd@HIDDEN>
To: bug-gnu-emacs@HIDDEN
X-detected-operating-system: by monty-python.gnu.org: FreeBSD 6.x (1)
Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.
Your bug report will be posted to the bug-gnu-emacs@HIDDEN mailing list,
and to the gnu.emacs.bug news group.
Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:
Both bash and csh use multi-character delimiters, yet comint and
shell mode only recognize single character delimiters. This
results in comint-dynamic-complete corrupting the command. For instance,
in bash:
date >& /dev/null
!!<tab>
date > & /dev/null
cat $(ls /dev/null)
!!<tab>
cat $ ( ls /dev/null )
cat <(date)
!!<tab>
cat < ( date )
This is extremely frustrating, requiring editing of commands being redone
before executing them.
If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
`bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/opt/share/emacs/23.1/etc/DEBUG for instructions.
In GNU Emacs 23.1.1 (x86_64-unknown-freebsd7.1, GTK+ Version 2.16.6)
of 2009-10-11 on osprey.kermodei.com
configured using `configure '--prefix=/opt''
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: C
value of $XMODIFIERS: nil
locale-coding-system: nil
default-enable-multibyte-characters: nil
Major mode: Shell
Minor modes in effect:
display-time-mode: t
shell-dirtrack-mode: t
tooltip-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
global-auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
abbrev-mode: t
Recent input:
C-g m v SPC s h TAB n o t e s . t x t RET RET RET C-x
C-f n TAB RET M-> M-< ESC O B ESC O B ESC O B ESC O
B ESC O B ESC O B ESC O A RET RET RET C-x C-s C-x o
d a t e C-a C-k c a t SPC $ ( d a t e ) RET M-p M-b
M-d l s SPC / d e v / n u l l C-e RET ! ! TAB RET ESC
O A ESC O A ESC O A C-a C-@ ESC O B C-e M-w C-x o ESC
O A ESC O A C-y C-a M-d C-d ESC O A ESC O A ESC O A
ESC O A C-@ C-e M-w ESC O B ESC O B ESC O B ESC O B
ESC O A C-e RET C-y C-a C-x C-s C-x o C-x h C-w RET
c a t SPC < ( d a t e ) C-e TAB C-x o C-x b RET C-x
o RET ! ! TAB RET ESC O A ESC O A ESC O A ESC O A C-@
ESC O B ESC O B C-e M-w C-x o ESC O B ESC O B RET C-y
C-a M-d C-d ESC O A C-k ESC O A ESC O A ESC O A ESC
O A C-@ C-e M-w ESC O B ESC O B ESC O B ESC O B C-y
ESC O B ESC O B RET RET C-x C-s C-x C-s C-x o M-x C-g
M-x b u g TAB C-a C-e TAB C-g M-x e m TAB a c TAB -
b TAB C-g M-x r e p TAB o TAB r TAB RET
Recent messages:
Mark set [4 times]
Saving file /a/markd/work/emacs/comint-bug/notes.txt...
Wrote /a/markd/work/emacs/comint-bug/notes.txt
(No changes need to be saved)
Quit
Making completion list...
Quit
Making completion list...
Quit
Making completion list... [2 times]
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From: Noam Postavsky <npostavs@HIDDEN>
To: Enric =?utf-8?Q?Rodr=C3=ADguez?= Carbonell <erodri@HIDDEN>
Subject: Re: bug#36103: 24.5;
Blank spaces around parentheses in history expansion in shell mode
References: <5fb3dec3-3c48-9a49-cc50-8f68981978af@HIDDEN>
Date: Wed, 05 Jun 2019 21:02:33 -0400
In-Reply-To: <5fb3dec3-3c48-9a49-cc50-8f68981978af@HIDDEN> ("Enric
=?utf-8?Q?Rodr=C3=ADguez?= Carbonell"'s message of "Wed, 5 Jun 2019
13:03:49 +0200")
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merge 36103 8027
quit
Enric Rodr=C3=ADguez Carbonell <erodri@HIDDEN> writes:
> $ for file in $(ls); do echo $file; done
> $ !for
> M-x comint-replace-by-expanded-history
> $ for file in $ ( ls ) ; do echo $file ; done
>
> The blank spaces around the parentheses should not be there.
> Because of these blank spaces, this command cannot be executed,
> as "$ (" should be "$(".
Yes, the problem is in comint-arguments which attempts to parse a shell
line into separate arguments, using just a bunch of regexps. This is
doomed to failure I think. But the alternative would be a full blown
shell parser, so I don't know how feasible it will be to fix this bug.
It's been with us a long time.
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