From: Remigiusz Leon Suwalski <remigiusz.suwalski@protonmail.ch>
To: Karel Zak <kzak@redhat.com>
Cc: "util-linux@vger.kernel.org" <util-linux@vger.kernel.org>
Subject: Re: Piped `column -t` inserts extra newlines since Oct 2023
Date: Tue, 05 Dec 2023 11:22:33 +0000 [thread overview]
Message-ID: <jkAf-CA-4rUJ4xpufgGpkm9pHPUneOPwOpKWAyQ7hyFyv7oyn3mAPB0tqc4hkH5n2Q2oavBo8jFvjdbmA-VjJllFsPAoXDC2M0H2V5pzoJQ=@protonmail.ch> (raw)
In-Reply-To: <20231205102603.csxm6luqnayetva5@ws.net.home>
Hi,
today I also can't reproduce the problem on HEAD of master but found another file that is not terminated with a newline character for which related issue occurs. (On my machine problem occurs starting from commit 94feb5a2 mentioned earlier but not on its parent). Since input data is larger than previously (7kB), I have uploaded it to a pastebin service [1].
$ curl -O https://pastebin.com/raw/gm65ephM
$ column -t < gm65ephM | sort
__ _.__% _____-_ ..__________-______.___ ____=_-___-_________________
__ _.__% _____-_ ..__________-______.___ ____=_-___-_________________
__ _.__% _____-_ ..__________-______.___ ____=_-___-_________________
(... 51 lines follow ...)
$ column -t < gm65ephM
__ __.__% _____-_ ..__________-______.___ ____=_-___-_________________ _____________________________________________________________________________
__ __.__% _____-_ ..__________-______.___ ____=_-___-_________________ _____________________________________________________________________________
__ __.__% _____-_ ..__________-______.___ ____=_-___-_________________ _____________________________________________________________________________
$ diff <(tr -s ' ' < gm65ephM | wc) <(column -t < gm65ephM | tr -s ' ' | wc) 1 ✘
1c1
< 53 324 7236
---
> 54 270 3834
The problem here is that last column is truncated and the output is significantly smaller. Could you please try reproducing this one? If it can't be done then perhaps something is wrong with my PC and the bug report can be closed.
[1] https://pastebin.com/raw/gm65ephM
Regards,
Leon Suwalski
On Tuesday, December 5th, 2023 at 11:26 AM, Karel Zak <kzak@redhat.com> wrote:
> On Mon, Dec 04, 2023 at 05:26:05PM +0000, Remigiusz Leon Suwalski wrote:
>
> > Hi,
> > I have discovered that `column` utility behaves oddly when piped to another command, as shown on examples below. I am not sure whether this is a bug or intended behaviour.
> >
> > First `column` built from sources (commit https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/?id=94feb5a20d23904cc15cd857c4e00f35f495116c):
> > $ echo '_ __ ___ ________ __________ _______' | ./column -t | nl # strange
> > 1 __
> > 2 ___
> > 3 ___
> > 4 _________
> > 5 __________
> > 6 _______
> > $ echo ' __ ___ ________ __________ _______' | ./column -t > file.txt # the same issue as above
> > $ echo ' __ ___ ________ __________ ________' | ./column -t # expected
> > _ __ ___ ________ __________ ________
>
>
> I cannot reproduce this on the current devel tree and stable/v2.39
> tree, I see:
>
> $ echo '_ __ ___ ________ __________ _______' | ./column -t | nl
> 1 _ __ ___ ________ __________ ________
>
>
> $ echo ' __ ___ ________ __________ ________' | ./column -t > a
>
> $ cat a
> _ __ ___ ________ __________ ________
>
>
> Karel
>
> --
> Karel Zak kzak@redhat.com
>
> http://karelzak.blogspot.com
prev parent reply other threads:[~2023-12-05 11:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-04 17:26 Piped `column -t` inserts extra newlines since Oct 2023 Remigiusz Leon Suwalski
2023-12-05 10:26 ` Karel Zak
2023-12-05 11:22 ` Remigiusz Leon Suwalski [this message]
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