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Bug#987851: linux-version sort: argv and stdin behaviors differ

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  Bug#987851: linux-version sort: argv and stdin behaviors differ dann frazier <dannf@dannf.org> - 2021-04-30 22:50 +0200
    Bug#987851: marked as done (linux-version sort: argv and stdin  behaviors differ) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2022-05-19 04:40 +0200

#70999 — Bug#987851: linux-version sort: argv and stdin behaviors differ

Package: linux-base
Version: 4.6
Severity: normal
Tags: patch

Using argv:
$ linux-version sort 5.8.0-50-generic 5.8.0-50-generic-64k
5.8.0-50-generic
5.8.0-50-generic-64k

Using stdin:
$ cat versions.txt
5.8.0-50-generic
5.8.0-50-generic-64k
$ cat versions.txt | linux-version sort
5.8.0-50-generic-64k
5.8.0-50-generic

It seems the trailing "\n" is unexpectedly being used in the comparison.
Now, perl and I have never really gotten along, but this patch seems to work:

--- /usr/bin/linux-version.orig	2020-06-25 17:23:24.000000000 +0000
+++ /usr/bin/linux-version	2021-04-30 20:39:13.708560573 +0000
@@ -70,7 +70,7 @@
 	@versions = map({[$_, "\n"]} @_);
     } else {
 	while (<STDIN>) {
-	    /^([^ ]*)(.*\n?)$/ or die;
+	    /^([^ \n]*)(.*\n?)$/ or die;
 	    push @versions, [$1, $2];
 	}
     }


-- System Information:
Debian Release: 11.0
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (1, 'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.10.0-5-amd64 (SMP w/4 CPU threads)
Kernel taint flags: TAINT_FIRMWARE_WORKAROUND
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages linux-base depends on:
ii  debconf [debconf-2.0]  1.5.76

linux-base recommends no packages.

linux-base suggests no packages.

-- debconf information:
* linux-base/removing-running-kernel: true
  linux-base/removing-title:

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#75274 — Bug#987851: marked as done (linux-version sort: argv and stdin behaviors differ)

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Your message dated Thu, 19 May 2022 02:33:55 +0000
with message-id <E1nrVz9-0002kv-3X@fasolo.debian.org>
and subject line Bug#987851: fixed in linux-base 4.9
has caused the Debian Bug report #987851,
regarding linux-version sort: argv and stdin behaviors differ
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
987851: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987851
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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