Bug#246961: marked as done (Surprising version comparison result)
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and subject line Bug#246961: Surprising version comparison result
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From: Thomas Hood <jdthood@yahoo.co.uk>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: Surprising version comparison result
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Date: Sun, 02 May 2004 16:52:45 +0200
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Package: dpkg
Version: 1.10.21
Severity: normal
$ dpkg --compare-versions 1.1 lt 11 && echo yes
yes
$ dpkg --compare-versions 1.a lt 1a && echo yes
$ dpkg --compare-versions 1a lt 1.a && echo yes
yes
Why is version 1a less than 1.a?
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (800, 'testing'), (700, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.4.25
Locale: LANG=en_IE@euro, LC_CTYPE=en_IE@euro
Versions of packages dpkg depends on:
ii dselect 1.10.20 a user tool to manage Debian packa
ii libc6 2.3.2.ds1-12 GNU C Library: Shared libraries an
-- no debconf information
---------------------------------------
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Date: Tue, 4 May 2004 13:52:37 +0100
From: Andrew Suffield <asuffield@debian.org>
To: 246961-done@bugs.debian.org
Subject: Re: Bug#246961: Surprising version comparison result
Message-ID: <20040504125237.GA5642@suffields.me.uk>
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On Sun, May 02, 2004 at 04:52:45PM +0200, Thomas Hood wrote:
> Package: dpkg
> Version: 1.10.21
> Severity: normal
>=20
> $ dpkg --compare-versions 1.1 lt 11 && echo yes
> yes
1 < 11, stop
> $ dpkg --compare-versions 1.a lt 1a && echo yes
1 =3D=3D 1, continue
chr('.') -> 46=20
!isalpha('.') -> 46 + 256 -> 302
chr('a') -> 97
302 > 97, stop
> Why is version 1a less than 1.a?
Consider yourself de-surprised.
--=20
.''`. ** Debian GNU/Linux ** | Andrew Suffield
: :' : http://www.debian.org/ |
`. `' |
`- -><- |
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