Regression: seq -s broken

[Stephan Diestelhorst]

The 'seq' command is broken 8.13 -> 8.20.

VERSION="13.04, Raring Ringtail"
$> apt-cache policy coreutils
coreutils:
  Installed: 8.20-3ubuntu5
  Candidate: 8.20-3ubuntu5
  Version table:
 *** 8.20-3ubuntu5 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/main amd64 Packages
        100 /var/lib/dpkg/status
$> seq -s ' ' 0 7
0

VERSION="12.04.2 LTS, Precise Pangolin"
>$ apt-cache policy coreutils
coreutils:
  Installed: 8.13-3ubuntu3.2
  Candidate: 8.13-3ubuntu3.2
  Version table:
 *** 8.13-3ubuntu3.2 0
        500 http://de.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     8.13-3ubuntu3 0
        500 http://de.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
$> seq -s' ' 0 7
0 1 2 3 4 5 6 7

[Stephan Diestelhorst (syon)]

Just looking at this some more. The expected behaviour is (with marked new lines):

$> seq -s " " 0 7
"0 1 2 3 4 5 6 7\n"

Broken behaviour:
$> seq -s " " 0 7
"0\n1 2 3 4 5 6 7"

Going to bisect upstream. Seems a silly bug to me.

[Stephan Diestelhorst (syon)]

This has been fixed upstream with coreutils 8.21, and is acknowledged as a regression introduced with 8.20. I would suggest to update the package, what is the process to request an update?

http://lists.gnu.org/archive/html/coreutils-announce/2013-02/msg00000.html

[Stephan Diestelhorst (syon)]

Upstream commit:
http://git.savannah.gnu.org/gitweb/?p=coreutils.git;a=commit;h=76f606a9544bd67629bd4766ff6efe8bf42b20d9