Debian Bug report logs - #648264
rlwrap: tab completion skips words that are prefixes of other words

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

From: Mike Miller <mtmiller@ieee.org>

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

Subject: rlwrap: tab completion skips words that are prefixes of other words

Date: Wed, 09 Nov 2011 21:48:33 -0500

Package: rlwrap
Version: 0.37-1
Severity: normal
Tags: upstream

When the word completion list contains two valid words, one of which is a
prefix of another, typing <tab> completes the longer word, skipping over the
shorter.

Discovered while following the instructions at [0] for configuring rlwrap with
clojure.  The completion list contains "vec", "vector", and "vector?" for
example.  Entering "ve<tab><tab><tab>" yields "vector?" as the only completion,
consuming the other valid word completions.

A simpler artificial example:
$ cat words.txt
i
id
ide
idea
ideas
$ rlwrap -f words.txt cat

Repeatedly pressing <tab> will add one letter at a time until "ideas" is
produced, same for the next word, and so on.

Desired behavior with user input of "id<tab><tab><tab><tab>..." is to display
"id ide idea ideas" all as possible completions.

[0] http://en.wikibooks.org/wiki/Clojure_Programming/Getting_Started



-- System Information:
Debian Release: 6.0.3
  APT prefers proposed-updates
  APT policy: (500, 'proposed-updates'), (500, 'stable'), (101, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages rlwrap depends on:
ii  libc6                     2.11.2-10      Embedded GNU C Library: Shared lib
ii  libncurses5               5.7+20100313-5 shared libraries for terminal hand
ii  libreadline6              6.1-3          GNU readline and history libraries

rlwrap recommends no packages.

rlwrap suggests no packages.

-- no debconf information

Message #8 received at 648264-forwarded@bugs.debian.org (full text, mbox, reply):

From: Francois Marier <francois@debian.org>

To: hanslub42@gmail.com

Cc: 648264-forwarded@bugs.debian.org

Subject: rlwrap: tab completion skips words that are prefixes of other words

Date: Thu, 10 Nov 2011 17:05:35 +1300

Hi Hans,

For your information, Mike Miller has filed the bug below on the Debian
tracker:

  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=648264

Cheers,
Francois

----- Forwarded message from Mike Miller <mtmiller@ieee.org> -----

When the word completion list contains two valid words, one of which is a
prefix of another, typing <tab> completes the longer word, skipping over the
shorter.

Discovered while following the instructions at [0] for configuring rlwrap with
clojure.  The completion list contains "vec", "vector", and "vector?" for
example.  Entering "ve<tab><tab><tab>" yields "vector?" as the only completion,
consuming the other valid word completions.

A simpler artificial example:
$ cat words.txt
i
id
ide
idea
ideas
$ rlwrap -f words.txt cat

Repeatedly pressing <tab> will add one letter at a time until "ideas" is
produced, same for the next word, and so on.

Desired behavior with user input of "id<tab><tab><tab><tab>..." is to display
"id ide idea ideas" all as possible completions.

[0] http://en.wikibooks.org/wiki/Clojure_Programming/Getting_Started

----- End forwarded message -----

Message #13 received at 648264@bugs.debian.org (full text, mbox, reply):

From: Hans Lub <hanslub42@gmail.com>

To: Francois Marier <francois@debian.org>

Cc: mtmiller@ieee.org

Subject: Re: rlwrap: tab completion skips words that are prefixes of other words

Date: Thu, 10 Nov 2011 09:50:56 +0100

Hello François
[cc Mike]

> Desired behavior with user input of "id<tab><tab><tab><tab>..." is to display
> "id ide idea ideas" all as possible completions.

That is certainly not the desired or expected behaviour with readline!
Using your words.txt (the one with 'ideas' and all of its prefixes):

[hlub@karpaten] ~ > rlwrap -f words.txt cat
i<TAB>
id     ide    idea   ideas
id<TAB>
ide    idea   ideas
ide<TAB>
idea   ideas
ideas (pressing TAB now will only add a space, as there are no more completions)

in the example above, i<TAB><TAB><TAB> is entered by me, the rest is
displayed by readine. For clarity, I have 'set show-all-if-ambiguous
On' in my .inputrc, but this doesn't change readline's completion
behaviour.

If I want "i", I press "i". rlwrap prints "i" and I accept it with <ENTER>"
If I want "id", I press "i<TAB>". rlwrap prints "id" and I accept it
with "<ENTER"
If I want "ide", I press "i<TAB><TAB>". rlwrap prints "ide" etc.

So, indeed, "i<TAB><TAB><TAB>" yields "ideas" as the only possible
completion - as it should!

regards

Hans






2011/11/10 Francois Marier <francois@debian.org>
>
> Hi Hans,
>
> For your information, Mike Miller has filed the bug below on the Debian
> tracker:
>
>  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=648264
>
> Cheers,
> Francois
>
> ----- Forwarded message from Mike Miller <mtmiller@ieee.org> -----
>
> When the word completion list contains two valid words, one of which is a
> prefix of another, typing <tab> completes the longer word, skipping over the
> shorter.
>
> Discovered while following the instructions at [0] for configuring rlwrap with
> clojure.  The completion list contains "vec", "vector", and "vector?" for
> example.  Entering "ve<tab><tab><tab>" yields "vector?" as the only completion,
> consuming the other valid word completions.
>
> A simpler artificial example:
> $ cat words.txt
> i
> id
> ide
> idea
> ideas
> $ rlwrap -f words.txt cat
>
> Repeatedly pressing <tab> will add one letter at a time until "ideas" is
> produced, same for the next word, and so on.
>

>
> [0] http://en.wikibooks.org/wiki/Clojure_Programming/Getting_Started
>
> ----- End forwarded message -----



--
Hans Lub                                   tel/fax +31 (0)30 2899249
Dolomieten 74 3524 VH Utrecht (Nederland)            hanslub42@gmail.com

Message #18 received at 648264@bugs.debian.org (full text, mbox, reply):

From: Mike Miller <mtmiller@ieee.org>

To: Hans Lub <hanslub42@gmail.com>

Cc: 648264@bugs.debian.org

Subject: Re: rlwrap: tab completion skips words that are prefixes of other words

Date: Fri, 11 Nov 2011 08:20:18 -0500

On Fri, Nov 11, 2011 at 4:12 AM, Hans Lub <hanslub42@gmail.com> wrote:
> Yes, I see your point. Thanks for pointing it out!
>
> bash, python, ... say: press Enter to accept, press <TAB> for all completions
> rlwrap says: press Enter to accept, press <TAB> for all *remaining* completions
>
> I find rlwrap more helpful, but expectations and muscle memory are to
> be reckoned with, so I will change its behaviour.
>
> A new rlwrap release (with lots of changes) is pending, and I don't
> think this bug warrants an interim bug-fix release, (though some of
> the other bugs do) This will probably have to wait until the 0.38
> version, sorry!

Hi Hans, thanks again for hearing me out, and for clarifying the
difference.  Let's call it a feature request instead of a bug.  Maybe
add an option to preserve the current, what I would call "aggressive
completion", behavior?

CCing to debian bts for the record, downgrading to wishlist, bug will
be fixed in next upstream release.

-- 
mike :: mtmiller at ieee dot org

Message #27 received at 648264-close@bugs.debian.org (full text, mbox, reply):

From: Mike Miller <mtmiller@debian.org>

To: 648264-close@bugs.debian.org

Subject: Bug#648264: fixed in rlwrap 0.41-1

Date: Fri, 12 Sep 2014 06:03:40 +0000

Source: rlwrap
Source-Version: 0.41-1

We believe that the bug you reported is fixed in the latest version of
rlwrap, which is due to be installed in the Debian FTP archive.

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 648264@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Mike Miller <mtmiller@debian.org> (supplier of updated rlwrap 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@ftp-master.debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Format: 1.8
Date: Fri, 12 Sep 2014 01:13:54 -0400
Source: rlwrap
Binary: rlwrap
Architecture: source
Version: 0.41-1
Distribution: unstable
Urgency: medium
Maintainer: Mike Miller <mtmiller@debian.org>
Changed-By: Mike Miller <mtmiller@debian.org>
Description:
 rlwrap     - readline feature command line wrapper
Closes: 648264
Changes:
 rlwrap (0.41-1) unstable; urgency=medium
 .
   * New upstream version.
   * pselect-timeout-optimized-away.patch: Drop, applied upstream.
   * tab-completion-prefix.patch: Allow input text to be its own valid
     completion. (Closes: #648264)
   * Use dh-autoreconf to regenerate the build system, drop autotools-dev.
   * Add Depends on ${perl:Depends} substvar.
   * Run wrap-and-sort on debian/control.
Checksums-Sha1:
 e7be1386a35dc1ef42ecadd838408a76dd647738 1866 rlwrap_0.41-1.dsc
 9fbc6d977255a6081360230917a293b6fd9c5fbe 259472 rlwrap_0.41.orig.tar.gz
 8007b8dcd223f1ae0d02407bfd3a06b7dfdfb544 5016 rlwrap_0.41-1.debian.tar.xz
Checksums-Sha256:
 4b16c9a5e532767455b019db97b136c5a6a3d301a7cbace734c6cceea8c0318a 1866 rlwrap_0.41-1.dsc
 34497647b68df4ee031acf4ef80c09c79fe02b9027e8988a64e13f9ebc17c20a 259472 rlwrap_0.41.orig.tar.gz
 e3d0a5586aca8f0828fb4b3c116d71d305369a9cbb1047edd3080bf6d1706884 5016 rlwrap_0.41-1.debian.tar.xz
Files:
 3c107ecea11f39dde00f73f43d36d20c 1866 utils optional rlwrap_0.41-1.dsc
 8d1f3f8e634d55725645e6750c54e5f2 259472 utils optional rlwrap_0.41.orig.tar.gz
 e0013e1f423620c0d3cae69ea79a7fec 5016 utils optional rlwrap_0.41-1.debian.tar.xz

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