Debian Bug report logs - #622383
bash-completion: completion only works from left to right: error : bash: $index: substring expression < 0

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Alban Browaeys <prahal@yahoo.com>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: bash-completion: completion only works from left to right: error : bash: $index: substring expression < 0

Date: Tue, 12 Apr 2011 18:56:58 +0200

Package: bash-completion
Version: 1:1.3-2
Severity: wishlist

Typing :
$ ls a
then moving the cursor between 'ls' and 'a' and pressing <Tab> leads to:
bash: $index: substring expression < 0

Thus completion only works right to the last character in a command. Is a fix
at reach ? Or is it by design ?
I could spend some time on this issue though I have not looked into it since bash 3.0 so
I bet most of what I know is obsolete. A clue would be welcomed.

Best regards,
Alban

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.38-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages bash-completion depends on:
ii  bash                          4.1-3      The GNU Bourne Again SHell

bash-completion recommends no packages.

bash-completion suggests no packages.

-- no debconf information

Message #10 received at 622383@bugs.debian.org (full text, mbox, reply):

From: David Paleino <dapal@debian.org>

To: Alban Browaeys <prahal@yahoo.com>

Cc: 622383@bugs.debian.org

Subject: Re: [Bash-completion-devel] Bug#622383: bash-completion: completion only works from left to right: error : bash: $index: substring expression < 0

Date: Tue, 12 Apr 2011 19:16:41 +0200

[Message part 1 (text/plain, inline)]

tags 622383 unreproducible moreinfo
thanks

Hello,

On Tue, 12 Apr 2011 18:56:58 +0200, Alban Browaeys wrote:

> Typing :
> $ ls a
> then moving the cursor between 'ls' and 'a' and pressing <Tab> leads to:
> bash: $index: substring expression < 0
> 
> Thus completion only works right to the last character in a command. Is a fix
> at reach ? Or is it by design ?

I can't reproduce this (| is where I place the cursor, and hit TAB):

$ ls a|
acpi-path-to-use-sysfs.mdwn  am-assigned.mdwn
[..]
$ ls |a
Display all 110 possibilities? (y or n)
^C
$

Can you please "set -x", and paste/attach the output to the bugreport?

Thank you,
David

-- 
 . ''`.   Debian developer | http://wiki.debian.org/DavidPaleino
 : :'  : Linuxer #334216 --|-- http://www.hanskalabs.net/
 `. `'`  GPG: 1392B174 ----|---- http://deb.li/dapal
   `-   2BAB C625 4E66 E7B8 450A C3E1 E6AA 9017 1392 B174

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Message #17 received at 622383@bugs.debian.org (full text, mbox, reply):

From: Alban Browaeys <prahal@yahoo.com>

To: 622383@bugs.debian.org

Subject: Re: [Bash-completion-devel] Bug#622383: bash-completion: completion only works from left to right: error : bash: $index: substring expression < 0

Date: Tue, 12 Apr 2011 19:43:02 +0200

Le mardi 12 avril 2011 à 19:16 +0200, David Paleino a écrit :
> tags 622383 unreproducible moreinfo
> thanks
> 
> Hello,
> 
> On Tue, 12 Apr 2011 18:56:58 +0200, Alban Browaeys wrote:
> 
> > Typing :
> > $ ls a
> > then moving the cursor between 'ls' and 'a' and pressing <Tab> leads to:
> > bash: $index: substring expression < 0
> > 
> > Thus completion only works right to the last character in a command. Is a fix
> > at reach ? Or is it by design ?
> 
> I can't reproduce this (| is where I place the cursor, and hit TAB):
> 
> $ ls a|
> acpi-path-to-use-sysfs.mdwn  am-assigned.mdwn
> [..]
> $ ls |a
> Display all 110 possibilities? (y or n)
> ^C
> $
> 

Sorry I forgot to tell there need to be a space before and after the
location where the cursor is:
$ ls <cursor>  a


> Can you please "set -x", and paste/attach the output to the bugreport?
> 
> Thank you,
> David
> 

$ ls + local cur prev split=false
+ _get_comp_words_by_ref -n = cur prev
+ local exclude flag i OPTIND=1
+ words=()
+ local cur cword words
+ upargs=()
+ upvars=()
+ local upargs upvars vcur vcword vprev vwords
+ getopts c:i:n:p:w: flag -n = cur prev
+ case $flag in
+ exclude==
+ getopts c:i:n:p:w: flag -n = cur prev
+ [[ 4 -ge 3 ]]
+ case ${!OPTIND} in
+ vcur=cur
+ let 'OPTIND += 1'
+ [[ 4 -ge 4 ]]
+ case ${!OPTIND} in
+ vprev=prev
+ let 'OPTIND += 1'
+ [[ 4 -ge 5 ]]
+ __get_cword_at_cursor_by_ref = words cword cur
+ words=()
+ local cword words
+ __reassemble_comp_words_by_ref = words cword
+ local exclude i j ref
+ [[ -n = ]]
+ exclude==
+ eval cword=1
++ cword=1
+ [[ -n = ]]
+ (( i=0, j=0 ))
+ (( i < 2 ))
+ [[ 0 -gt 0 ]]
+ ref='words[0]'
+ eval 'words[0]=${!ref}${COMP_WORDS[i]}'
++ words[0]=ls
+ [[ 0 == 1 ]]
+ (( i++, j++ ))
+ (( i < 2 ))
+ [[ 1 -gt 0 ]]
+ [[ -n a ]]
+ [[ '' == a ]]
+ ref='words[1]'
+ eval 'words[1]=${!ref}${COMP_WORDS[i]}'
++ words[1]=a
+ [[ 1 == 1 ]]
+ eval cword=1
++ cword=1
+ (( i++, j++ ))
+ (( i < 2 ))
+ local i cur2
+ local 'cur=ls  a'
+ local index=3
+ (( i = 0 ))
+ (( i <= cword ))
+ [[ 5 -ge 2 ]]
+ [[ ls != \l\s ]]
+ [[ 0 -lt 1 ]]
+ local old_size=5
+ cur='  a'
+ local new_size=3
+ index=1
+ (( ++i  ))
+ (( i <= cword ))
+ [[ 3 -ge 1 ]]
+ [[   != \a ]]
+ cur=' a'
+ (( index-- ))
+ [[ 2 -ge 1 ]]
+ [[   != \a ]]
+ cur=a
+ (( index-- ))
+ [[ 1 -ge 1 ]]
+ [[ a != \a ]]
+ [[ 1 -lt 1 ]]
+ (( ++i  ))
+ (( i <= cword ))
+ [[ a != \a ]]
bash: $index: substring expression < 0

Best regards,
Alban

Message #22 received at 622383@bugs.debian.org (full text, mbox, reply):

From: David Paleino <dapal@debian.org>

To: Alban Browaeys <prahal@yahoo.com>

Cc: 622383@bugs.debian.org

Subject: Re: Bug#622383: bash-completion: completion only works from left to right: error : bash: $index: substring expression < 0

Date: Tue, 12 Apr 2011 20:33:41 +0200

[Message part 1 (text/plain, inline)]

tags 622383 = confirmed upstream
thanks

On Tue, 12 Apr 2011 19:43:02 +0200, Alban Browaeys wrote:

> Le mardi 12 avril 2011 à 19:16 +0200, David Paleino a écrit :
> > I can't reproduce this (| is where I place the cursor, and hit TAB):
> > 
> > $ ls a|
> > acpi-path-to-use-sysfs.mdwn  am-assigned.mdwn
> > [..]
> > $ ls |a
> > Display all 110 possibilities? (y or n)
> > ^C
> > $
> 
> Sorry I forgot to tell there need to be a space before and after the
> location where the cursor is:
> $ ls <cursor>  a

Ok, confirming it now, it also happens with the latest git revision.

> $ ls + local cur prev split=false
> + _get_comp_words_by_ref -n = cur prev
> + local exclude flag i OPTIND=1
> + words=()
> + local cur cword words
> + upargs=()
> + upvars=()
> + local upargs upvars vcur vcword vprev vwords
> + getopts c:i:n:p:w: flag -n = cur prev
> + case $flag in
> + exclude==
> + getopts c:i:n:p:w: flag -n = cur prev
> + [[ 4 -ge 3 ]]
> + case ${!OPTIND} in
> + vcur=cur
> + let 'OPTIND += 1'
> + [[ 4 -ge 4 ]]
> + case ${!OPTIND} in
> + vprev=prev
> + let 'OPTIND += 1'
> + [[ 4 -ge 5 ]]
> + __get_cword_at_cursor_by_ref = words cword cur
> + words=()
> + local cword words
> + __reassemble_comp_words_by_ref = words cword
> + local exclude i j ref
> + [[ -n = ]]
> + exclude==
> + eval cword=1
> ++ cword=1
> + [[ -n = ]]
> + (( i=0, j=0 ))
> + (( i < 2 ))
> + [[ 0 -gt 0 ]]
> + ref='words[0]'
> + eval 'words[0]=${!ref}${COMP_WORDS[i]}'
> ++ words[0]=ls
> + [[ 0 == 1 ]]
> + (( i++, j++ ))
> + (( i < 2 ))
> + [[ 1 -gt 0 ]]
> + [[ -n a ]]
> + [[ '' == a ]]
> + ref='words[1]'
> + eval 'words[1]=${!ref}${COMP_WORDS[i]}'
> ++ words[1]=a
> + [[ 1 == 1 ]]
> + eval cword=1
> ++ cword=1
> + (( i++, j++ ))
> + (( i < 2 ))
> + local i cur2
> + local 'cur=ls  a'
> + local index=3
> + (( i = 0 ))
> + (( i <= cword ))
> + [[ 5 -ge 2 ]]
> + [[ ls != \l\s ]]
> + [[ 0 -lt 1 ]]
> + local old_size=5
> + cur='  a'
> + local new_size=3
> + index=1
> + (( ++i  ))
> + (( i <= cword ))
> + [[ 3 -ge 1 ]]
> + [[   != \a ]]
> + cur=' a'
> + (( index-- ))
> + [[ 2 -ge 1 ]]
> + [[   != \a ]]
> + cur=a
> + (( index-- ))
> + [[ 1 -ge 1 ]]
> + [[ a != \a ]]
> + [[ 1 -lt 1 ]]
> + (( ++i  ))
> + (( i <= cword ))
> + [[ a != \a ]]
> bash: $index: substring expression < 0

I'll investigate this, thanks.

Kindly,
David

-- 
 . ''`.   Debian developer | http://wiki.debian.org/DavidPaleino
 : :'  : Linuxer #334216 --|-- http://www.hanskalabs.net/
 `. `'`  GPG: 1392B174 ----|---- http://deb.li/dapal
   `-   2BAB C625 4E66 E7B8 450A C3E1 E6AA 9017 1392 B174

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Message #29 received at 622383@bugs.debian.org (full text, mbox, reply):

From: David Paleino <dapal@debian.org>

To: Alban Browaeys <prahal@yahoo.com>

Cc: 622383@bugs.debian.org

Subject: Re: Bug#622383: bash-completion: completion only works from left to right: error : bash: $index: substring expression < 0

Date: Tue, 12 Apr 2011 22:15:01 +0200

[Message part 1 (text/plain, inline)]

tags 622383 fixed-upstream
thanks

Hello Alban,

On Tue, 12 Apr 2011 19:43:02 +0200, Alban Browaeys wrote:

> [..]
> bash: $index: substring expression < 0

I think I fixed it.

  http://git.debian.org/?p=bash-completion/bash-completion.git;a=commitdiff;h=4ad538ba1a0ccb483899b4eaa70cc604d2b7bf78

Please wait for the next Debian package, or apply the patch yourself :)

Kindly,
David

-- 
 . ''`.   Debian developer | http://wiki.debian.org/DavidPaleino
 : :'  : Linuxer #334216 --|-- http://www.hanskalabs.net/
 `. `'`  GPG: 1392B174 ----|---- http://deb.li/dapal
   `-   2BAB C625 4E66 E7B8 450A C3E1 E6AA 9017 1392 B174

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Message #36 received at 622383@bugs.debian.org (full text, mbox, reply):

From: Alban Browaeys <prahal@yahoo.com>

To: dapal@debian.org

Cc: 622383@bugs.debian.org

Subject: Re: Bug#622383: bash-completion: completion only works from left to right: error : bash: $index: substring expression < 0

Date: Tue, 12 Apr 2011 23:16:31 +0200

Le mardi 12 avril 2011 à 22:15 +0200, David Paleino a écrit :
> tags 622383 fixed-upstream
> thanks
> 
> Hello Alban,
> 
> On Tue, 12 Apr 2011 19:43:02 +0200, Alban Browaeys wrote:
> 
> > [..]
> > bash: $index: substring expression < 0
> 
> I think I fixed it.
> 
>   http://git.debian.org/?p=bash-completion/bash-completion.git;a=commitdiff;h=4ad538ba1a0ccb483899b4eaa70cc604d2b7bf78
> 

Indeed it is gone ! (I am using the full bash-completion set from git)
No more in need to clean the command  line to complete a forgotten token
in the middle.

Congratulations
Alban

Message #41 received at 622383@bugs.debian.org (full text, mbox, reply):

From: David Paleino <dapal@debian.org>

To: Frank Harwald <franki777@xmail.net>

Cc: 624703@bugs.debian.org, 622383@bugs.debian.org

Subject: Re: [Bash-completion-devel] Bug#624703: bash-completion makes bash report an error and doesn't complete

Date: Sat, 30 Apr 2011 21:30:33 +0200

[Message part 1 (text/plain, inline)]

forcemerge 622383 624703
thanks

Hello,

On Sat, 30 Apr 2011 11:50:26 -0700, Frank Harwald wrote:

> Package: bash-completion
> Version: 1.2-3
> 
> There is a bug in bash-completion that makes it print out an error message
> when trying to complete any command by hitting <TAB> when bash_completion is
> loaded and the current command doesn't get any completion at all. It only
> works under special circumstances, e.g. the command line must have a special
> kind of format and the cursor must be at a specific position.
> 
> It prints out the following error message:
> 	any_command bash: $index: substring expression < 0
> [..]

Seems like a duplicate of #622383. Would you please test the patch linked there?

Kindly,
David

-- 
 . ''`.   Debian developer | http://wiki.debian.org/DavidPaleino
 : :'  : Linuxer #334216 --|-- http://www.hanskalabs.net/
 `. `'`  GPG: 1392B174 ----|---- http://deb.li/dapal
   `-   2BAB C625 4E66 E7B8 450A C3E1 E6AA 9017 1392 B174

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Message #50 received at 622383-close@bugs.debian.org (full text, mbox, reply):

From: David Paleino <dapal@debian.org>

To: 622383-close@bugs.debian.org

Subject: Bug#622383: fixed in bash-completion 1:1.90-1

Date: Thu, 03 Nov 2011 12:17:12 +0000

Source: bash-completion
Source-Version: 1:1.90-1

We believe that the bug you reported is fixed in the latest version of
bash-completion, which is due to be installed in the Debian FTP archive:

bash-completion_1.90-1.debian.tar.gz
  to main/b/bash-completion/bash-completion_1.90-1.debian.tar.gz
bash-completion_1.90-1.dsc
  to main/b/bash-completion/bash-completion_1.90-1.dsc
bash-completion_1.90-1_all.deb
  to main/b/bash-completion/bash-completion_1.90-1_all.deb
bash-completion_1.90.orig.tar.bz2
  to main/b/bash-completion/bash-completion_1.90.orig.tar.bz2



A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 622383@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
David Paleino <dapal@debian.org> (supplier of updated bash-completion package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Format: 1.8
Date: Thu, 03 Nov 2011 13:03:51 +0100
Source: bash-completion
Binary: bash-completion
Architecture: source all
Version: 1:1.90-1
Distribution: experimental
Urgency: low
Maintainer: Bash Completion Maintainers <bash-completion-devel@lists.alioth.debian.org>
Changed-By: David Paleino <dapal@debian.org>
Description: 
 bash-completion - programmable completion for the bash shell
Closes: 577933 593835 604393 615134 618734 619014 622383 623680 625234 642526
Changes: 
 bash-completion (1:1.90-1) experimental; urgency=low
 .
   * bash-completion 2 preview: dynamic loading of completions
     - optionally fallback to generic file completion if _filedir
       returns nothing (Closes: #619014, LP: #533985)
     - various fixes (Closes: #622383)
     - apt: add 'download' to subcommands (Closes: #625234, LP: #720541)
     - aptitude: add 'versions' command (Closes: #604393)
     - dpkg-query: use the 'dpkg' completion (Closes: #642526)
     - lintian: remove --unpack-level (Closes: #623680)
     - rrdtool: complete filenames after commands (Closes: #577933)
     - provide profile.d hook for per user disabling of bash_completion
       (Closes: #593835)
     - mutt: support tildes when recursively sourcing muttrc files
       (Closes: #615134)
     - tar: improve tar *[cr]*f completions (Closes: #618734)
   * More checks in update-bash-completion: avoid unnecessary
     sourcing of completion if symlink already exists
   * Add message for users before they report a bug (debian/bug-presubj),
     I'm kind of fed-up with bugs caused by acroread.sh :/
   * Removed patches merged upstream
   * Drop trigger-based completion loading
   * Standards-Version bump to 3.9.2, no changes needed
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 64a6a900971b2bc4d6d8706345f3037c81b85762 179058 bash-completion_1.90-1_all.deb
Checksums-Sha256: 
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