coreutils 8.21 is in trusty and I can confirm the problem is not as described. I close the ticket as fixed with a request for a backport to raring and saucy. But I would say not to hold your breath for that.
** Changed in: coreutils (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1161073 Title: coreutils: seq puts the separator on wrong spot! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/coreutils/+bug/1161073/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs