<jarnos> I suggest Bug #1621226 should be SRUed.
<rbasak> jarnos: that's reasonable, but it's also a change in behaviour
that users may be relying on, as grep tends to be used quite a bit in
scripts.
<rbasak> So I'm not sure.
<rbasak> I added a task in the bug for you. Can discuss in there.
** Also affects: grep (Ubuntu Trusty)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1621226
Title:
grep does not output null when -o -z is used
Status in grep package in Ubuntu:
Fix Released
Status in grep source package in Trusty:
New
Bug description:
Impact
Grepping null terminated records with -o option does not work. There
may be a newline in a matched string, so the string may be ambiguous
in output as the matched parts are separated by newline.
Test Case
$ printf 'a\0b\0b1' | grep --null-data b | hexdump -C
00000000 62 00 62 31 00 |b.b1.|
00000005
but
$ printf 'a\0b\0b1' | grep -o --null-data b | hexdump -C
00000000 62 0a 62 0a |b.b.|
00000004
Expected result:
00000000 62 00 62 00 |b.b.|
00000004
Regression Potential
Not remarkable. Scripts using -o -z are broken anyway with the broken
grep.
This is fixed in Xenial, but IMO should be fixed in Trusty, too.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: grep 2.16-1
ProcVersionSignature: Ubuntu 4.4.0-37.56~14.04.1-generic 4.4.19
Uname: Linux 4.4.0-37-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed Sep 7 22:48:42 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-09-21 (717 days ago)
InstallationMedia: Ubuntu-Studio 14.04.1 LTS "Trusty Tahr" - Release amd64
(20140722.1)
SourcePackage: grep
UpgradeStatus: No upgrade log present (probably fresh install)
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